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Lüskow F, Bezio N, Caputo L, Chi X, Dumont HJ, Karunarathne KD, López-González PJ, Mańko MK, Marchessaux G, Suzuki KS, Pakhomov EA. Hidden gems: Scattered knowledge hampered freshwater jellyfish research over the past one-and-a-half centuries. Ecol Evol 2024; 14:e70350. [PMID: 39355110 PMCID: PMC11439511 DOI: 10.1002/ece3.70350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 08/19/2024] [Accepted: 09/10/2024] [Indexed: 10/03/2024] Open
Abstract
Freshwater jellyfish (= limnic medusa-budding hydrozoans, FWJ) are a small group of cnidarians found on all continents except Antarctica in temperate to tropical latitudes. Members of this group belong primarily to three genera: Astrohydra, Craspedacusta, and Limnocnida. While Astrohydra and Limnocnida are typically restricted to the islands of Japan, Africa, and the Indian subcontinent, one species or potential species complex, Craspedacusta sowerbii, became globally invasive. Despite research going back about one-and-a-half centuries, little is known about their phylogeny and ecology compared to marine jellyfish. Recent species distribution modelling, however, showed that by 2050, C. sowerbii will potentially extend their distribution ranges due to global warming to high-latitude ecosystems and be present (medusa stage) for an extended time in the seasonal limnic production cycle. An increase in their relative ecological importance with temporal and spatial spreading is hypothesised. Only recently, it has been shown that the trophic roles of polyps and medusae and their prey overlap with other ecosystem members. In addition, medusa behaviour may cause trophic cascades and alter vertical nutrient distributions. However, polyps and other benthic life cycle stages are understudied. In globally, changing freshwater ecosystems that may become more accommodating for FWJ, an improved understanding of their population biology and ecosystem ecology is urgently needed. In this integrative review, we, therefore, explore reasons for the hampered historical research progress, contrast developments with those of marine cnidarians, compile and publish alongside an extensive and unprecedented literature database, and formulate avenues for future directions in FWJ research.
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Affiliation(s)
- Florian Lüskow
- Department of Earth, Ocean and Atmospheric Sciences University of British Columbia Vancouver British Columbia Canada
- Institute for the Oceans and Fisheries, University of British Columbia Vancouver British Columbia Canada
| | - Nicholas Bezio
- Department of Biology University of Maryland Baltimore Maryland USA
| | - Luciano Caputo
- Facultad de Ciencias, Instituto de Ciencias Marinas y Limnolóogicas Universidad Austral de Chile Valdivia Chile
- Centro Transdisciplinario de Estudios Ambientales y Desarrollo Humano Sostenible Universidad Austral de Chile Valdivia Chile
| | - Xupeng Chi
- CAS Key Laboratory of Marine Ecology and Environmental Sciences Institute of Oceanology, Chinese Academy of Sciences Qingdao China
- Laboratory of Marine Ecology and Environmental Sciences Qingdao National Laboratory for Marine Science and Technology Qingdao China
| | - Henri J Dumont
- Department of Biology Gent University Ghent Belgium
- Department of Ecology Jinan University Guangzhou China
| | - Krishan D Karunarathne
- Department of Aquaculture and Fisheries Wayamba University of Sri Lanka Makandura Sri Lanka
| | - Pablo J López-González
- Departamento de Zoología, Biodiversidad y Ecología Acuática Universidad de Sevilla Sevilla Spain
| | - Maciej K Mańko
- Laboratory of Plankton Biology, Department of Marine Biology and Biotechnology University of Gdańsk Gdynia Poland
| | - Guillaume Marchessaux
- Laboratory of Ecology, Department of Earth and Marine Science University of Palermo Palermo Italy
| | - Kentaro S Suzuki
- Sustainable System Research Laboratory Central Research Institute of Electric Power Industry Abiko Japan
| | - Evgeny A Pakhomov
- Department of Earth, Ocean and Atmospheric Sciences University of British Columbia Vancouver British Columbia Canada
- Institute for the Oceans and Fisheries, University of British Columbia Vancouver British Columbia Canada
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Dischereit A, Throm JK, Werner KM, Neuhaus S, Havermans C. A belly full of jelly? DNA metabarcoding shows evidence for gelatinous zooplankton predation by several fish species in Greenland waters. ROYAL SOCIETY OPEN SCIENCE 2024; 11:240797. [PMID: 39144497 PMCID: PMC11321860 DOI: 10.1098/rsos.240797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/14/2024] [Revised: 07/22/2024] [Accepted: 07/22/2024] [Indexed: 08/16/2024]
Abstract
The waters of Greenland harbour a high species richness and biomass of gelatinous zooplankton (GZP); however, their role in the diet of the many fish species, including commercially exploited species, has not yet been verified. Traditionally, GZP was considered to be a trophic dead end, i.e. with a limited contribution as prey for higher trophic levels. We applied DNA metabarcoding of two gene fragments (COI, 18S V1-V2) to the stomach contents of seven pelagic and demersal fish species in Greenland waters, to identify their prey composition as well as the occurrence of GZP predation. We detected GZP DNA reads in the stomachs of all investigated fish species, with frequency of occurrences ranging from 12.5% (for Melanogrammus aeglefinus) to 50% (for Argentina silus). GZP predation had not yet been reported for several of these species. GZP were found to majorly contribute to the diet of A. silus and Anarhichas denticulatus, particularly, the siphonophore Nanomia cara and the scyphozoan Atolla were of a high importance as prey, respectively. The use of multiple genetic markers enabled us to detect a total of 59 GZP taxa in the fish stomachs with several GZP species being detected only by one of the markers.
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Affiliation(s)
- Annkathrin Dischereit
- HYIG ARJEL, Benthic Ecology, Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany
- Marine Zoology, BreMarE—Bremen Marine Ecology, Fachbereich 2, Universität Bremen, Bremen28334, Germany
| | - Julia Katharina Throm
- HYIG ARJEL, Benthic Ecology, Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany
| | | | - Stefan Neuhaus
- Data Division, Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany
| | - Charlotte Havermans
- HYIG ARJEL, Benthic Ecology, Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany
- Marine Zoology, BreMarE—Bremen Marine Ecology, Fachbereich 2, Universität Bremen, Bremen28334, Germany
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Osathanunkul M. Species-specific eDNA assay development for enhanced box jellyfish risk management in coastal environments. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 931:172900. [PMID: 38697547 DOI: 10.1016/j.scitotenv.2024.172900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Revised: 04/28/2024] [Accepted: 04/28/2024] [Indexed: 05/05/2024]
Abstract
Human interaction with marine creatures holds both positive and negative dimensions. Coastal communities benefit from marine environments, relying on them for sustenance and livelihoods. Fishing activities support economies, and marine biodiversity contributes to overall ecosystem health. However, challenges like overfishing, habitat destruction, and pollution pose threats to both marine life and human communities. Recently, there has been widespread concern regarding the potential increase in jellyfish populations across global marine ecosystems, attributed mainly to environmental factors such as climate drivers and anthropogenic forces, or their complex interactions. Encounters with hazardous marine species, such as box jellyfish, exemplify the dangers associated with coastal activities. Unintended interactions may lead to stings, injuries, and even fatalities, necessitating proactive measures and advanced technologies. This study addresses the inadequacies of existing measures in preventing box jellyfish incidents by introducing environmental DNA (eDNA) assays for detecting the deadly Chiropsoides buitendijki and focuses on developing qPCR and dPCR-based eDNA assays. Emphasising prevention over treatment, the study establishes a proactive system to assess C. buitendijki distribution across 63 tourist beaches in the Gulf of Thailand. Comparative analysis highlights the superior performance of dPCR over qPCR and traditional surveys. The dPCR experiment yielded positive results for all eDNA samples collected at sites where C. buitendijki had previously been identified. Remarkably, the eDNA testing also detected positive results in 16 additional sample locations where no physical specimens were collected, despite reported jellyfish stings at some of these sites. These findings underscore the precision and efficacy of the proposed eDNA detection technology in the early detection and assessment of box jellyfish distribution. This advancement therefore not only aids ecological research but also serves as a valuable tool for safeguarding public health, providing an early warning system for potential jellyfish encounters. Balancing positive human-marine interactions with effective risk mitigation strategies is crucial for sustainable coexistence, the preservation of marine ecosystems, and human well-being.
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Affiliation(s)
- Maslin Osathanunkul
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand.
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4
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Sun T, Peng S, Tu F, Xu P, Ye L, Zhao J, Dong Z. Physiological and transcriptomic responses of Aurelia coerulea polyps to acidified seawater conditions. MARINE ENVIRONMENTAL RESEARCH 2024; 196:106441. [PMID: 38484650 DOI: 10.1016/j.marenvres.2024.106441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 03/02/2024] [Accepted: 03/07/2024] [Indexed: 03/23/2024]
Abstract
Scyphozoan jellyfish, known for their evolutionary position and ecological significance, are thought to exhibit relatively notable resilience to ocean acidification. However, knowledge regarding the molecular mechanisms underlying the scyphozoan jellyfish response to acidified seawater conditions is currently lacking. In this study, two independent experiments were conducted to determine the physiological and molecular responses of moon jellyfish (Aurelia coerulea) polyps to within- and trans-generational exposure to two reduced pH treatments (pH 7.8 and pH 7.6). The results revealed that the asexual reproduction of A. coerulea polyps significantly declined under acute exposure to pH 7.6 compared with that of polyps at ambient pH conditions. Transcriptomics revealed a notable upregulation of genes involved in immunity and cytoskeleton components. In contrast, genes associated with metabolism were downregulated in response to reduced pH treatments after 6 weeks of within-generational acidified conditions. However, reduced pH treatments had no significant influence on the asexual reproduction of A. coerulea polyps after exposure to acidified conditions over a total of five generations, suggesting that A. coerulea polyps may acclimate to low pH levels. Transcriptomics revealed distinct gene expression profiles between within- and trans-generational exposure groups to two reduced pH treatments. The offspring polyps of A. coerulea subjected to trans-generational acidified conditions exhibited both upregulated and downregulated expression of genes associated with metabolism. These physiological and transcriptomic characteristics of A. coerulea polyps in response to elevated CO2 levels suggest that polyps produced asexually under acidified conditions may be resilient to such conditions in the future.
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Affiliation(s)
- Tingting Sun
- Muping Coastal Environment Research Station, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong, 264003, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Saijun Peng
- Muping Coastal Environment Research Station, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong, 264003, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Fangzheng Tu
- Marine Science and Technology College, Harbin Institute of Technology, Weihai, Shandong, 264209, China
| | - Pengzhen Xu
- Muping Coastal Environment Research Station, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong, 264003, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Lijing Ye
- Muping Coastal Environment Research Station, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong, 264003, China
| | - Jianmin Zhao
- Muping Coastal Environment Research Station, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong, 264003, China
| | - Zhijun Dong
- Muping Coastal Environment Research Station, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong, 264003, China.
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Toullec G, Rädecker N, Pogoreutz C, Banc-Prandi G, Escrig S, Genoud C, Olmos CM, Spangenberg J, Meibom A. Host starvation and in hospite degradation of algal symbionts shape the heat stress response of the Cassiopea-Symbiodiniaceae symbiosis. MICROBIOME 2024; 12:42. [PMID: 38424629 PMCID: PMC10902967 DOI: 10.1186/s40168-023-01738-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Accepted: 12/11/2023] [Indexed: 03/02/2024]
Abstract
BACKGROUND Global warming is causing large-scale disruption of cnidarian-Symbiodiniaceae symbioses fundamental to major marine ecosystems, such as coral reefs. However, the mechanisms by which heat stress perturbs these symbiotic partnerships remain poorly understood. In this context, the upside-down jellyfish Cassiopea has emerged as a powerful experimental model system. RESULTS We combined a controlled heat stress experiment with isotope labeling and correlative SEM-NanoSIMS imaging to show that host starvation is a central component in the chain of events that ultimately leads to the collapse of the Cassiopea holobiont. Heat stress caused an increase in catabolic activity and a depletion of carbon reserves in the unfed host, concurrent with a reduction in the supply of photosynthates from its algal symbionts. This state of host starvation was accompanied by pronounced in hospite degradation of algal symbionts, which may be a distinct feature of the heat stress response of Cassiopea. Interestingly, this loss of symbionts by degradation was concealed by body shrinkage of the starving animals, resulting in what could be referred to as "invisible" bleaching. CONCLUSIONS Overall, our study highlights the importance of the nutritional status in the heat stress response of the Cassiopea holobiont. Compared with other symbiotic cnidarians, the large mesoglea of Cassiopea, with its structural sugar and protein content, may constitute an energy reservoir capable of delaying starvation. It seems plausible that this anatomical feature at least partly contributes to the relatively high stress tolerance of these animals in rapidly warming oceans. Video Abstract.
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Affiliation(s)
- Gaëlle Toullec
- Laboratory for Biological Geochemistry, School of Architecture, Civil and Environmental Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, 1015, Switzerland.
| | - Nils Rädecker
- Laboratory for Biological Geochemistry, School of Architecture, Civil and Environmental Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, 1015, Switzerland
| | - Claudia Pogoreutz
- Laboratory for Biological Geochemistry, School of Architecture, Civil and Environmental Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, 1015, Switzerland
- PSL Université Paris: EPHE-UPVD-CNRS, UAR 3278 CRIOBE, Université de Perpignan, 52 Avenue Paul Alduy, Perpignan Cedex, 66860, France
| | - Guilhem Banc-Prandi
- Laboratory for Biological Geochemistry, School of Architecture, Civil and Environmental Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, 1015, Switzerland
| | - Stéphane Escrig
- Laboratory for Biological Geochemistry, School of Architecture, Civil and Environmental Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, 1015, Switzerland
| | - Christel Genoud
- Electron Microscopy Facility, University of Lausanne, Lausanne, 1015, Switzerland
| | - Cristina Martin Olmos
- Laboratory for Biological Geochemistry, School of Architecture, Civil and Environmental Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, 1015, Switzerland
- Center for Advanced Surface Analysis, Institute of Earth Science, University of Lausanne, Lausanne, 1015, Switzerland
| | - Jorge Spangenberg
- Institute of Earth Surface Dynamics, University of Lausanne, Lausanne, 1015, Switzerland
| | - Anders Meibom
- Laboratory for Biological Geochemistry, School of Architecture, Civil and Environmental Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, 1015, Switzerland.
- Center for Advanced Surface Analysis, Institute of Earth Science, University of Lausanne, Lausanne, 1015, Switzerland.
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Anuszczyk SR, Dabiri JO. Electromechanical enhancement of live jellyfish for ocean exploration. BIOINSPIRATION & BIOMIMETICS 2024; 19:026018. [PMID: 38330441 DOI: 10.1088/1748-3190/ad277f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Accepted: 02/08/2024] [Indexed: 02/10/2024]
Abstract
The vast majority of the ocean's volume remains unexplored, in part because of limitations on the vertical range and measurement duration of existing robotic platforms. In light of the accelerating rate of climate change impacts on the physics and biogeochemistry of the ocean, the need for new tools that can measure more of the ocean on faster timescales is becoming pressing. Robotic platforms inspired or enabled by aquatic organisms have the potential to augment conventional technologies for ocean exploration. Recent work demonstrated the feasibility of directly stimulating the muscle tissue of live jellyfish via implanted microelectronics. We present a biohybrid robotic jellyfish that leverages this external electrical swimming control, while also using a 3D printed passive mechanical attachment to streamline the jellyfish shape, increase swimming performance, and significantly enhance payload capacity. A six-meter-tall, 13 600 l saltwater facility was constructed to enable testing of the vertical swimming capabilities of the biohybrid robotic jellyfish over distances exceeding 35 body diameters. We found that the combination of external swimming control and the addition of the mechanical forebody resulted in an increase in swimming speeds to 4.5 times natural jellyfish locomotion. Moreover, the biohybrid jellyfish were capable of carrying a payload volume up to 105% of the jellyfish body volume. The added payload decreased the intracycle acceleration of the biohybrid robots relative to natural jellyfish, which could also facilitate more precise measurements by onboard sensors that depend on consistent platform motion. While many robotic exploration tools are limited by cost, energy expenditure, and varying oceanic environmental conditions, this platform is inexpensive, highly efficient, and benefits from the widespread natural habitats of jellyfish. The demonstrated performance of these biohybrid robots suggests an opportunity to expand the set of robotic tools for comprehensive monitoring of the changing ocean.
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Affiliation(s)
- Simon R Anuszczyk
- Graduate Aerospace Laboratories, California Institute of Technology, Pasadena, CA, United States of America
| | - John O Dabiri
- Graduate Aerospace Laboratories, California Institute of Technology, Pasadena, CA, United States of America
- Mechanical and Civil Engineering, California Institute of Technology, Pasadena, CA, United States of America
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Fadeev E, Hennenfeind JH, Amano C, Zhao Z, Klun K, Herndl GJ, Tinta T. Bacterial degradation of ctenophore Mnemiopsis leidyi organic matter. mSystems 2024; 9:e0126423. [PMID: 38259104 PMCID: PMC10878102 DOI: 10.1128/msystems.01264-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Accepted: 12/18/2023] [Indexed: 01/24/2024] Open
Abstract
Blooms of gelatinous zooplankton, an important source of protein-rich biomass in coastal waters, often collapse rapidly, releasing large amounts of labile detrital organic matter (OM) into the surrounding water. Although these blooms have the potential to cause major perturbations in the marine ecosystem, their effects on the microbial community and hence on the biogeochemical cycles have yet to be elucidated. We conducted microcosm experiments simulating the scenario experienced by coastal bacterial communities after the decay of a ctenophore (Mnemiopsis leidyi) bloom in the northern Adriatic Sea. Within 24 h, a rapid response of bacterial communities to the M. leidyi OM was observed, characterized by elevated bacterial biomass production and respiration rates. However, compared to our previous microcosm study of jellyfish (Aurelia aurita s.l.), M. leidyi OM degradation was characterized by significantly lower bacterial growth efficiency, meaning that the carbon stored in the OM was mostly respired. Combined metagenomic and metaproteomic analysis indicated that the degradation activity was mainly performed by Pseudoalteromonas, producing a large amount of proteolytic extracellular enzymes and exhibiting high metabolic activity. Interestingly, the reconstructed metagenome-assembled genome (MAG) of Pseudoalteromonas phenolica was almost identical (average nucleotide identity >99%) to the MAG previously reconstructed in our A. aurita microcosm study, despite the fundamental genetic and biochemical differences of the two gelatinous zooplankton species. Taken together, our data suggest that blooms of different gelatinous zooplankton are likely triggering a consistent response from natural bacterial communities, with specific bacterial lineages driving the remineralization of the gelatinous OM.IMPORTANCEJellyfish blooms are increasingly becoming a recurring seasonal event in marine ecosystems, characterized by a rapid build-up of gelatinous biomass that collapses rapidly. Although these blooms have the potential to cause major perturbations, their impact on marine microbial communities is largely unknown. We conducted an incubation experiment simulating a bloom of the ctenophore Mnemiopsis leidyi in the Northern Adriatic, where we investigated the bacterial response to the gelatinous biomass. We found that the bacterial communities actively degraded the gelatinous organic matter, and overall showed a striking similarity to the dynamics previously observed after a simulated bloom of the jellyfish Aurelia aurita s.l. In both cases, we found that a single bacterial species, Pseudoalteromonas phenolica, was responsible for most of the degradation activity. This suggests that blooms of different jellyfish are likely to trigger a consistent response from natural bacterial communities, with specific bacterial species driving the remineralization of gelatinous biomass.
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Affiliation(s)
- Eduard Fadeev
- Department of Functional and Evolutionary Ecology, Bio-Oceanography and Marine Biology Unit, University of Vienna, Vienna, Austria
| | - Jennifer H. Hennenfeind
- Department of Functional and Evolutionary Ecology, Bio-Oceanography and Marine Biology Unit, University of Vienna, Vienna, Austria
| | - Chie Amano
- Department of Functional and Evolutionary Ecology, Bio-Oceanography and Marine Biology Unit, University of Vienna, Vienna, Austria
| | - Zihao Zhao
- Department of Functional and Evolutionary Ecology, Bio-Oceanography and Marine Biology Unit, University of Vienna, Vienna, Austria
| | - Katja Klun
- Marine Biology Station Piran, National Institute of Biology, Piran, Slovenia
| | - Gerhard J. Herndl
- Department of Functional and Evolutionary Ecology, Bio-Oceanography and Marine Biology Unit, University of Vienna, Vienna, Austria
- Department of Marine Microbiology and Biogeochemistry, NIOZ, Royal Netherlands Institute for Sea Research, Den Burg, the Netherlands
- Vienna Metabolomics & Proteomics Center, University of Vienna, Vienna, Austria
| | - Tinkara Tinta
- Department of Functional and Evolutionary Ecology, Bio-Oceanography and Marine Biology Unit, University of Vienna, Vienna, Austria
- Marine Biology Station Piran, National Institute of Biology, Piran, Slovenia
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Toullec G, Lyndby NH, Banc-Prandi G, Pogoreutz C, Martin Olmos C, Meibom A, Rädecker N. Symbiotic nutrient exchange enhances the long-term survival of cassiosomes, the autonomous stinging-cell structures of Cassiopea. mSphere 2024; 9:e0032223. [PMID: 38088556 PMCID: PMC10826341 DOI: 10.1128/msphere.00322-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Accepted: 10/17/2023] [Indexed: 01/31/2024] Open
Abstract
Medusae of the widely distributed upside-down jellyfish Cassiopea release autonomous, mobile stinging structures. These so-called cassiosomes play a role in predator defense and prey capture, and are major contributors to "contactless" stinging incidents in (sub-)tropical shallow waters. While the presence of endosymbiotic dinoflagellates in cassiosomes has previously been observed, their potential contribution to the metabolism and long-term survival of cassiosomes is unknown. Combining stable isotope labeling and correlative scanning electron microscopy and nanoscale secondary ion mass spectrometry imaging with a long-term in vitro experiment, our study reveals a mutualistic symbiosis based on nutritional exchanges in dinoflagellate-bearing cassiosomes. We show that organic carbon input from the dinoflagellates fuels the metabolism of the host tissue and enables anabolic nitrogen assimilation. This symbiotic nutrient exchange enhances the life span of cassiosomes for at least one month in vitro. Overall, our study demonstrates that cassiosomes, in analogy with Cassiopea medusae, are photosymbiotic holobionts. Cassiosomes, which are easily accessible under aquarium conditions, promise to be a powerful new miniaturized model system for in-depth ultrastructural and molecular investigation of cnidarian photosymbioses.IMPORTANCEThe upside-down jellyfish Cassiopea releases autonomous tissue structures, which are a major cause of contactless stinging incidents in (sub-) tropical coastal waters. These so-called cassiosomes frequently harbor algal symbionts, yet their role in cassiosome functioning and survival is unknown. Our results show that cassiosomes are metabolically active and supported by algal symbionts. Algal photosynthesis enhances the cassiosomes long-term survival in the light. This functional understanding of cassiosomes thereby contributes to explaining the prevalence of contactless stinging incidents and the ecological success of some Cassiopea species. Finally, we show that cassiosomes are miniaturized symbiotic holobionts that can be used to study host-microbe interactions in a simplified system.
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Affiliation(s)
- Gaëlle Toullec
- Laboratory for Biological Geochemistry, School of Architecture, Civil and Environmental Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Niclas Heidelberg Lyndby
- Laboratory for Biological Geochemistry, School of Architecture, Civil and Environmental Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Guilhem Banc-Prandi
- Laboratory for Biological Geochemistry, School of Architecture, Civil and Environmental Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Claudia Pogoreutz
- Laboratory for Biological Geochemistry, School of Architecture, Civil and Environmental Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
- PSL Université Paris: EPHE-UPVD-CNRS, UAR 3278 CRIOBE, Université de Perpignan, Perpignan, France
| | - Cristina Martin Olmos
- Laboratory for Biological Geochemistry, School of Architecture, Civil and Environmental Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
- Center for Advanced Surface Analysis, Institute of Earth Science, University of Lausanne, Lausanne, Switzerland
| | - Anders Meibom
- Laboratory for Biological Geochemistry, School of Architecture, Civil and Environmental Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
- Center for Advanced Surface Analysis, Institute of Earth Science, University of Lausanne, Lausanne, Switzerland
| | - Nils Rädecker
- Laboratory for Biological Geochemistry, School of Architecture, Civil and Environmental Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
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Bi WH, Jin Y, Wang YT, Li JX, Zhang HD, Jin W, Fu GW, Sun S. Discovery and experimental verification of the spectral characteristics at different growth stages of Aurelia. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 304:123304. [PMID: 37683432 DOI: 10.1016/j.saa.2023.123304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 08/02/2023] [Accepted: 08/26/2023] [Indexed: 09/10/2023]
Abstract
Under the dual pressure of human activities and global changes, jellyfish outbreaks have occurred frequently in China's offshore waters in recent years, with serious impacts on marine fisheries, coastal tourism, marine ecology and cooling water systems for coastal industries. In order to accurately identify the origin of Aurelia and to be more proactive in the prevention and control of Aurelia outbreaks, this article proposed the use of ultraviolet (UV) and fluorescence spectroscopy to detect the polyps, ephyrae and larvae of Aurelia at different growth stages. The AvaSpec-2048 UV visible fibre spectrometer and the F-7000 fluorescence spectrophotometer were used to focus on studying the UV absorption spectrum and three-dimensional fluorescence spectrum of the polyps, ephyrae, and larvae of Aurelia cultured under laboratory conditions. The research results showed that the three-dimensional fluorescence spectrum of the three different growth stages of Aurelia, namely polyps, ephyrae and larvae of Aurelia, had relatively similar fluorescence distributions, and the fluorescence intensity was different from each other. However, the absorption peaks of the three UV absorption spectrum appeared in different UV light bands and there were absorption peaks of different intensities. The different spectral characteristics at different growth stages of Aurelia provide new ideas and methods for exploring the birthplace of Aurelia.
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Affiliation(s)
- Wei-Hong Bi
- School of Information Science and Engineering, Yanshan University, The Key Laboratory for Special Fiber and Fiber Sensor of Hebei Province, Qinhuangdao 066004, China.
| | - Yun Jin
- School of Information Science and Engineering, Yanshan University, The Key Laboratory for Special Fiber and Fiber Sensor of Hebei Province, Qinhuangdao 066004, China; Department of Mechanical and Electrical Engineering, Hebei Construction Material Vocational and Technical College, Qinhuangdao 066004, China
| | - Yan-Tao Wang
- Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
| | - Jia-Xin Li
- School of Information Science and Engineering, Yanshan University, The Key Laboratory for Special Fiber and Fiber Sensor of Hebei Province, Qinhuangdao 066004, China
| | - Hai-Dong Zhang
- School of Information Science and Engineering, Yanshan University, The Key Laboratory for Special Fiber and Fiber Sensor of Hebei Province, Qinhuangdao 066004, China
| | - Wa Jin
- School of Information Science and Engineering, Yanshan University, The Key Laboratory for Special Fiber and Fiber Sensor of Hebei Province, Qinhuangdao 066004, China
| | - Guang-Wei Fu
- School of Information Science and Engineering, Yanshan University, The Key Laboratory for Special Fiber and Fiber Sensor of Hebei Province, Qinhuangdao 066004, China
| | - Song Sun
- Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
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10
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Clerc C, Aumont O, Bopp L. Filter-feeding gelatinous macrozooplankton response to climate change and implications for benthic food supply and global carbon cycle. GLOBAL CHANGE BIOLOGY 2023; 29:6383-6398. [PMID: 37751177 DOI: 10.1111/gcb.16942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 07/21/2023] [Accepted: 08/28/2023] [Indexed: 09/27/2023]
Abstract
It is often suggested that gelatinous zooplankton may benefit from anthropogenic pressures of all kinds and in particular from climate change. Large pelagic tunicates, for example, are likely to be favored over other types of macrozooplankton due to their filter-feeding mode, which gives them access to small preys thought to be less affected by climate change than larger preys. In this study, we provide model-based estimate of potential community changes in macrozooplankton composition and estimate for the first time their effects on benthic food supply and on the ocean carbon cycle under two 21st-century climate-change scenarios. Forced with output from an Earth System Model climate projections, our ocean biogeochemical model simulates a large reduction in macrozooplankton biomass in response to anthropogenic climate change, but shows that gelatinous macrozooplankton are less affected than nongelatinous macrozooplankton, with global biomass declines estimated at -2.8% and -3.5%, respectively, for every 1°C of warming. The inclusion of gelatinous macrozooplankon in our ocean biogeochemical model has a limited effect on anthropogenic carbon uptake in the 21st century, but impacts the projected decline in particulate organic matter fluxes in the deep ocean. In subtropical oligotrophic gyres, where gelatinous zooplankton dominate macrozooplankton, the decline in the amount of organic matter reaching the seafloor is reduced by a factor of 2 when gelatinous macrozooplankton are considered (-17.5% vs. -29.7% when gelatinous macrozooplankton are not considered, all for 2100 under RCP8.5). The shift to gelatinous macrozooplankton in the future ocean therefore buffers the decline in deep carbon fluxes and should be taken into account when assessing potential changes in deep carbon storage and the risks that deep ecosystems may face when confronted with a decline in their food source.
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Affiliation(s)
- Corentin Clerc
- LMD/IPSL, Ecole Normale Supérieure/Université PSL, CNRS, Ecole Polytechnique, Sorbonne Université, Paris, France
| | - Olivier Aumont
- LOCEAN/IPSL, IRD, CNRS, MNHN, Sorbonne Université, Paris, France
| | - Laurent Bopp
- LMD/IPSL, Ecole Normale Supérieure/Université PSL, CNRS, Ecole Polytechnique, Sorbonne Université, Paris, France
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11
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Tosetto EG, Neumann-Leitão S, Araujo M, Minto Dimoune D, Bertrand A, Nogueira Júnior M. Amazon River plume habitats shape planktonic cnidarian assemblages in the Western Atlantic. PLoS One 2023; 18:e0290667. [PMID: 37624787 PMCID: PMC10456164 DOI: 10.1371/journal.pone.0290667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Accepted: 08/11/2023] [Indexed: 08/27/2023] Open
Abstract
The impact of the Amazon River freshwater plume on planktonic cnidarians over neritic and oceanic provinces is unknown. To provide further knowledge we took advantage of an oceanographic cruise performed in October 2012 in the Western Atlantic off the North Brazilian coast (8°N, 51°W-3.5°S, 37°W). A complex and dynamic system was observed, with strong currents and eddies dispersing the plume over a large area. Our results show that the Amazon River shapes marine habitats with a thin highly productive surface layer compressed by a deeper oxygen minimum zone both over the shelf and in the open ocean. We hypothesized that such habitat structure is particularly advantageous to planktonic cnidarians, which have low metabolic rates, being able to survive in hypoxic zones, resulting in high species richness and abundance. Over the shelf, distinctions were sharp and the area under the influence of the plume presented a diverse assemblage occurring in large abundance, while outside the plume, the hydromedusa Liriope tetraphylla was dominant and occurred almost alone. Divergences in the oceanic province were less pronounced, but still expressive being mostly related to the abundance of dominant species. We concluded that Amazon River plume is a paramount physical feature that profoundly affects the dynamics of the mesoscale habitat structure in the Western Equatorial Atlantic Ocean and that such habitat structure is responsible for shaping planktonic cnidarian assemblages both in neritic and oceanic provinces.
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Affiliation(s)
- Everton Giachini Tosetto
- Institut de Recherche pour le Développement, Sète, France
- MARBEC, Univ Montpellier, CNRS, IFREMER, IRD, Sète, France
- Departamento de Oceanografia, Universidade Federal de Pernambuco, Recife, Brazil
| | | | - Moacyr Araujo
- Departamento de Oceanografia, Universidade Federal de Pernambuco, Recife, Brazil
- Brazilian Research Network on Global Climate Change (Rede CLIMA), São José dos Campos, Brazil
| | | | - Arnaud Bertrand
- Institut de Recherche pour le Développement, Sète, France
- MARBEC, Univ Montpellier, CNRS, IFREMER, IRD, Sète, France
- Departamento de Oceanografia, Universidade Federal de Pernambuco, Recife, Brazil
- Departamento de Pesca e Aquicultura, Universidade Federal Rural de Pernambuco, Recife, Brazil
| | - Miodeli Nogueira Júnior
- Departamento de Sistemática e Ecologia, Universidade Federal da Paraíba, João Pessoa, Brazil
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12
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Zang W, Zhang F, Sun Y, Xu Z, Sun S. Benthic ecosystem determines jellyfish blooms by controlling the polyp colony development. MARINE POLLUTION BULLETIN 2023; 193:115232. [PMID: 37406400 DOI: 10.1016/j.marpolbul.2023.115232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 06/25/2023] [Accepted: 06/27/2023] [Indexed: 07/07/2023]
Abstract
The harmful irregular jellyfish blooms in recent years are difficult to be deciphered by macro hydrographic condition changes. To fundamentally explain the dynamic of jellyfish populations, we shifted the focus to the polyp stage of jellyfish life cycle and local benthic ecosystems. We monitored the population dynamics of Aurelia coerulea polyps in Jiaozhou Bay and other benthic biofouling species in situ to explore the adaptive mechanism of polyps and interspecific interactions in the benthic microhabitat. Our results showed that as temperature increased, the polyps multiplied on the bare substrate, however, other benthic fouling organisms simultaneously invaded the polyp colony according to their different colonisation methods and physiological characteristics. In addition, the polyps were extremely tolerant to food scarcity in the natural environment at low temperatures. Our study indicated that it is necessary to consider the local benthic ecosystem and implement ecosystem-based management strategies to predict and manage problematic jellyfish blooms.
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Affiliation(s)
- Wenxiao Zang
- CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Fang Zhang
- CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Yan Sun
- CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, PR China
| | - Zhiqiang Xu
- Jiaozhou Bay Marine Ecosystem Research Station, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, PR China
| | - Song Sun
- CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China; Jiaozhou Bay Marine Ecosystem Research Station, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, PR China.
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13
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Belzer A, Parker ER. Climate Change, Skin Health, and Dermatologic Disease: A Guide for the Dermatologist. Am J Clin Dermatol 2023:10.1007/s40257-023-00770-y. [PMID: 37336870 DOI: 10.1007/s40257-023-00770-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/12/2023] [Indexed: 06/21/2023]
Abstract
Climate change has a pervasive impact on health and is of clinical relevance to every organ system. Climate change-related factors impact the skin's capacity to maintain homeostasis, leading to a variety of cutaneous diseases. Stratospheric ozone depletion has led to increased risk of melanoma and keratinocyte carcinomas due to ultraviolet radiation exposure. Atopic dermatitis, psoriasis, pemphigus, acne vulgaris, melasma, and photoaging are all associated with rising levels of air pollution. Elevated temperatures due to global warming induce disruption of the skin microbiome, thereby impacting atopic dermatitis, acne vulgaris, and psoriasis, and high temperatures are associated with exacerbation of skin disease and increased risk of heat stroke. Extreme weather events due to climate change, including floods and wildfires, are of relevance to the dermatologist as these events are implicated in cutaneous injuries, skin infections, and acute worsening of inflammatory skin disorders. The health consequences as well as the economic and social burden of climate change fall most heavily on vulnerable and marginalized populations due to structural disparities. As dermatologists, understanding the interaction of climate change and skin health is essential to appropriately manage dermatologic disease and advocate for our patients.
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Affiliation(s)
- Annika Belzer
- Yale University School of Medicine, New Haven, CT, USA
| | - Eva Rawlings Parker
- Department of Dermatology, Center for Biomedical Ethics and Society, Vanderbilt University Medical Center, 719 Thompson Lane, Suite 26-300, Nashville, TN, 37204, USA.
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14
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Chen X, Wei Q, Jian H, Li D, Yu Z, Yao Q. Long-term variation in nutrients in the South Yellow Sea in response to anthropogenic inputs. MARINE POLLUTION BULLETIN 2023; 192:115039. [PMID: 37201349 DOI: 10.1016/j.marpolbul.2023.115039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 05/04/2023] [Accepted: 05/06/2023] [Indexed: 05/20/2023]
Abstract
Based on historical data from 1976 to 2019, the effects of anthropogenic activities on long-term changes in nutrients and their ecological effects in the South Yellow Sea were investigated. The dissolved inorganic nitrogen (DIN) concentrations increased continuously from 1990 until the mid-2000s, followed by a shift from an upward trend to a downward trend. The phosphate (PO4-P) and silicate (SiO3-Si) concentrations also showed obvious interannual variations throughout the study period. The concentrations of DIN, PO4-P and SiO3-Si have decreased significantly in recent decade and more. These changes mainly resulted from the reduction in terrestrial input, while the main reason for the decrease in DIN and PO4-P concentrations is the reduction in anthropogenic input. The long-term nutrient changes in the South Yellow Sea have potential ecological impacts on green tide features.
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Affiliation(s)
- Xiaona Chen
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China
| | - Qinsheng Wei
- First Institute of Oceanography, Ministry of Natural Resources, 6 Xianxialing Road, Qingdao 266061, China
| | - Huimin Jian
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China
| | - Dandan Li
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China
| | - Zhigang Yu
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China; Laboratory of Marine Ecology and Environmental Science, Qingdao Laoshan Laboratory, Qingdao 266071, China
| | - Qingzhen Yao
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China; Laboratory of Marine Ecology and Environmental Science, Qingdao Laoshan Laboratory, Qingdao 266071, China.
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15
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Motta G, Caffara M, Fioravanti ML, Bottaro M, Avian M, Terlizzi A, Tedesco P. Parasitic infection in the scyphozoan Rhizostoma pulmo (Macri, 1778). Sci Rep 2023; 13:5549. [PMID: 37019902 PMCID: PMC10076428 DOI: 10.1038/s41598-023-31693-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Accepted: 03/15/2023] [Indexed: 04/07/2023] Open
Abstract
Very little information is reported for parasites of cnidarians, therefore, the present work aimed to investigate parasitic infections in one of the most widespread jellyfish in the Mediterranean Sea, Rhizostoma pulmo. The goals were to determine prevalence and intensity of parasites in R. pulmo, identify the species involved through morphological and molecular analysis, test whether infection parameters differ in different body parts and in relation to jellyfish size. 58 individuals were collected, 100% of them infected with digenean metacercariae. Intensity varied between 18.7 ± 6.7 per individual in 0-2 cm diameter jellyfish up to 505 ± 50.6 in 14 cm ones. Morphological and molecular analyses suggest that the metacercariae belonged to the family Lepocreadiidae and could be possibly assigned to the genus Clavogalea. Prevalence values of 100% suggest that R. pulmo is an important intermediate host in the life cycle of lepocreadiids in the region. Our findings also support the hypothesis that R. pulmo is an important part in the diet of teleost fish, which are reported as definitive hosts of lepocreadiids, since trophic transmission is necessary for these parasites to complete their life cycles. Parasitological data may therefore be useful to investigate fish-jellyfish predation, integrating traditional methods such as gut contents analysis.
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Affiliation(s)
- Gregorio Motta
- Department of Life Science, University of Trieste, 34127, Trieste, Italy
- Department of Integrative Marine Ecology (EMI), Stazione Zoologica Anton Dohrn-Italian National Institute for Marine Biology, Ecology and Biotechnology, 80121, Napoli, Italy
| | - Monica Caffara
- Department of Veterinary Medical Sciences, Alma Mater Studiorum University of Bologna, Ozzano dell'Emilia, 40064, Bologna, Italy
| | - Maria Letizia Fioravanti
- Department of Veterinary Medical Sciences, Alma Mater Studiorum University of Bologna, Ozzano dell'Emilia, 40064, Bologna, Italy
| | - Massimiliano Bottaro
- Department of Integrative Marine Ecology (EMI), Genoa Marine Centre (GMC), Stazione Zoologica Anton Dohrn-Italian National Institute of Marine Biology, Ecology and Biotechnology, Villa del Principe, Piazza del Principe 4, 16126, Genoa, Italy
| | - Massimo Avian
- Department of Life Science, University of Trieste, 34127, Trieste, Italy
| | - Antonio Terlizzi
- Department of Life Science, University of Trieste, 34127, Trieste, Italy
- Department of Integrative Marine Ecology (EMI), Stazione Zoologica Anton Dohrn-Italian National Institute for Marine Biology, Ecology and Biotechnology, 80121, Napoli, Italy
| | - Perla Tedesco
- Department of Veterinary Medical Sciences, Alma Mater Studiorum University of Bologna, Ozzano dell'Emilia, 40064, Bologna, Italy.
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16
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Lee SH, Tseng LC, Ho Yoon Y, Ramirez-Romero E, Hwang JS, Carlos Molinero J. The global spread of jellyfish hazards mirrors the pace of human imprint in the marine environment. ENVIRONMENT INTERNATIONAL 2023; 171:107699. [PMID: 36529082 DOI: 10.1016/j.envint.2022.107699] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 11/11/2022] [Accepted: 12/13/2022] [Indexed: 06/17/2023]
Abstract
The rising demand of ecosystem services, due to the increasing human population in coastal areas, and the subsequent need to secure healthy and sustainable seas constitute a major challenge for marine ecosystems management. In addition, global anthropogenic changes have transformed the marine realm, thereby challenging ecosystem health and the services necessary for human welfare. These changes have opened ecological space for opportunistic organisms, such as jellyfish, resulting in ecosystem-wide and economic implications that threaten marine ecosystem services. Here, we used a comprehensive dataset of jellyfish hazards over the period 1960-2019 to track their dynamics and implications for human welfare. Our results revealed that their large-scale patterns have been mainly enhanced in human-perturbed Large Marine Ecosystems, although the contribution of jellyfish Class to hazard type changed across ocean regions. The long-term variability of these events suggests that their temporal patterns mirror the pace of ocean warming and ocean health degradation nurtured by global anthropogenic changes in recent decades. These results warn of the wide socioecological risks of jellyfish hazards, and their implications advocate for transboundary, regional cooperation to develop effective ecosystem-based management actions. Failure to integrate jellyfish into ocean surveys will compromise coastal ecosystem services governance. Classification: Social Sciences/Sustainability Science, Biological Sciences/Ecology.
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Affiliation(s)
- Sun-Hee Lee
- Institute of Marine Biology, National Taiwan Ocean University, Keelung 202301, Taiwan; MARBEC, IRD/CNRS/IFREMER/Université de Montpellier, Sète CEDEX 34203, France.
| | - Li-Chun Tseng
- Institute of Marine Biology, National Taiwan Ocean University, Keelung 202301, Taiwan
| | - Yang Ho Yoon
- Department of Marine Convergence Science, Chonnam National University, Yeosu 59626, Republic of Korea
| | - Eduardo Ramirez-Romero
- Instituto de Ciencias Marinas de Andalucía, ICMAN,CSIC, Republica Saharaui, 4, Puerto Real, Cadiz, 11519, Spain
| | - Jiang-Shiou Hwang
- Institute of Marine Biology, National Taiwan Ocean University, Keelung 202301, Taiwan; Center of Excellence for the Oceans, National Taiwan Ocean University, Keelung 202301, Taiwan; Center of Excellence for Ocean Engineering, National Taiwan Ocean University, Keelung 202301, Taiwan.
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17
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Lin J, Feng S, Wang L, Qiu Y. Complete mitochondrial genome sequence of Acromitus flagellatus and its phylogenetic relationship with related jellyfish species. Mitochondrial DNA B Resour 2022; 7:1823-1824. [PMID: 36313475 PMCID: PMC9602930 DOI: 10.1080/23802359.2022.2131367] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
This study describes the complete mitochondrial genome sequence of the scyphozoan Acromitus flagellatus (Maas, 1903), a blooming jellyfish found in the coastal areas of Hainan, China. Its mitochondrial DNA is 16,779 bp in length and has a linear structure, comprising 13 protein-coding genes (PCGs), two rRNAs (s-rRNA and l-rRNA), and two tRNAs (trna-W-TCA and trna-M-CAT). A + T content was 65.39% (A: 29.27%, C: 16.59%, G: 18.03%, and T: 36.12%). ATG was the start codon in 11 PCGs: COX1, COX2, ATP8, ATP6, COX3, NAD2, NAD6, NAD4l, NAD1, NAD4, and COB. NAD5 and NAD3 had GTG as the start codon. TAG was the stop codon for COX2, NAD6, and COB. The other 10 PCGs were terminated by TAA. The neighbor-joining phylogenetic tree of the 15 related jellyfish species showed that A. flagellatus is closely related to Nemopilema nomurai and Rhopilema esculentum.
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Affiliation(s)
- Jianing Lin
- Institute of Eco-Environmental Forensics, Shandong University, Qingdao, China,School of Environmental Science and Engineering, Shandong University, Qingdao, China
| | - Song Feng
- CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China,Laboratory for Marine Ecology and Environmental Science, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, China,Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, China,College of Marine Science, University of Chinese Academy of Sciences, Qingdao, China,CONTACT Song Feng CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
| | - Lijuan Wang
- CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China,Laboratory for Marine Ecology and Environmental Science, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, China,Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, China,College of Marine Science, University of Chinese Academy of Sciences, Qingdao, China
| | - Yanhao Qiu
- CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China,Laboratory for Marine Ecology and Environmental Science, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, China,Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, China,College of Marine Science, University of Chinese Academy of Sciences, Qingdao, China
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18
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Rowley OC, Courtney R, Northfield T, Seymour J. Environmental drivers of the occurrence and abundance of the Irukandji jellyfish (Carukia barnesi). PLoS One 2022; 17:e0272359. [PMID: 35925949 PMCID: PMC9352007 DOI: 10.1371/journal.pone.0272359] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Accepted: 07/19/2022] [Indexed: 11/19/2022] Open
Abstract
Understanding the links between species and their environment is critical for species management. This is particularly true for organisms of medical and/or economic significance. The ‘Irukandji’ jellyfish (Carukia barnesi) is well known for its small size, cryptic nature, and highly venomous sting. Being the namesake of the Irukandji syndrome, contact with this marine stinger often leads to hospitalization and can be fatal. Consequently, the annual occurrence of this organism is believed to cost the Australian government an estimated $AUD3 billion annually in medical costs and losses for tourism. Despite its economic importance the logistical difficulties related to surveying C.barnesi in situ has led to a paucity of knowledge regarding its ecology and significantly impeded management strategies to date. In this study, we use six years of direct C. barnesi capture data to explore patterns pertaining to the annual occurrence and abundance of this species in the nearshore waters of the Cairns coast. We provide novel insights into trends in medusae aggregations and size distribution and primarily focus on the potential role of environmental drivers for annual C. barnesi occurrence patterns. Using a two-part hurdle model, eight environmental parameters were investigated over four time periods for associations with records of medusa presence and abundance. Final models showed a small amount of variation in medusa presence and abundance patterns could be accounted for by long-term trends pertaining to rainfall and wind direction. However, the assessed environmental parameters could not explain high annual variation or site location effects. Ultimately best-fit models had very low statistical inference power explaining between 16 and 20% of the variance in the data, leaving approximately 80% of all variation in medusa presence and abundance unexplained.
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Affiliation(s)
- Olivia C. Rowley
- Australian Institute of Tropical Health and Medicine, James Cook University, Cairns, QLD, Australia
- * E-mail:
| | - Robert Courtney
- Australian Institute of Tropical Health and Medicine, James Cook University, Cairns, QLD, Australia
| | - Tobin Northfield
- Tree Fruit Research and Extension Center Washington State University, Wenatchee, Washington, United States of America
| | - Jamie Seymour
- Australian Institute of Tropical Health and Medicine, James Cook University, Cairns, QLD, Australia
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19
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Rahav E, Belkin N, Nnebuo O, Sisma-Ventura G, Guy-Haim T, Sharon-Gojman R, Geisler E, Bar-Zeev E. Jellyfish swarm impair the pretreatment efficiency and membrane performance of seawater reverse osmosis desalination. WATER RESEARCH 2022; 215:118231. [PMID: 35247603 DOI: 10.1016/j.watres.2022.118231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 02/16/2022] [Accepted: 02/24/2022] [Indexed: 06/14/2023]
Abstract
Circumstantial evidence has suggested that jellyfish swarms impair the operation of seawater reverse osmosis desalination facilities. However, only limited information is currently available on the pretreatment efficiency of jellyfish and their effects on reverse osmosis (RO) membrane performance. Here, we have comprehensively tested the pretreatment efficiency of a dual-media gravity filter and cartridge micro-filtration following the addition of jellyfish into the feedwater. Concurrently, the fouling propensity and performance of the RO membranes were examined. We show that jellyfish demise resulted in seawater eutrophication that triggered a significant increase in bacterial biomass (∼50-fold), activity (∼7-fold), and release of transparent exopolymer particles (∼5-fold), peaking three days after the addition of jellyfish into the feedwater. In parallel, a significant reduction in permeate water flux was recorded (∼10%) while trans-membrane pressure sharply increased (15%), reaching the operation pressure limit of our system (75 bar) after five days. At the conclusion of the experiments, the membrane surface was heavily covered by large chunks of organic-rich material and multilayered biofilms. Our results provide a holistic view on the operational challenges of seawater reverse osmosis (SWRO) desalination triggered by jellyfish swarms in coastal areas. Following the above, it can be inferred that freshwater production will likely be halted three days after drawing the jellyfish into the pretreatment system. Outcomes from these results may lead to the development of science-based operational protocols to cope with growing occurrence of jellyfish swarms around the intake of SWRO desalination facilities worldwide.
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Affiliation(s)
- Eyal Rahav
- Israel Oceanographic and Limnological Research, National Institute of Oceanography, Haifa 31080, Israel.
| | - Natalia Belkin
- Israel Oceanographic and Limnological Research, National Institute of Oceanography, Haifa 31080, Israel
| | - Oluebube Nnebuo
- Zuckerberg Institute for Water Research, Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede Boqer Campus 84990, Israel
| | - Guy Sisma-Ventura
- Israel Oceanographic and Limnological Research, National Institute of Oceanography, Haifa 31080, Israel
| | - Tamar Guy-Haim
- Israel Oceanographic and Limnological Research, National Institute of Oceanography, Haifa 31080, Israel
| | - Revital Sharon-Gojman
- Zuckerberg Institute for Water Research, Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede Boqer Campus 84990, Israel
| | - Eyal Geisler
- Israel Oceanographic and Limnological Research, National Institute of Oceanography, Haifa 31080, Israel; Zuckerberg Institute for Water Research, Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede Boqer Campus 84990, Israel
| | - Edo Bar-Zeev
- Zuckerberg Institute for Water Research, Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede Boqer Campus 84990, Israel.
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20
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Lin Y, Vidjak O, Ezgeta-Balić D, Bojanić Varezić D, Šegvić-Bubić T, Stagličić N, Zhan A, Briski E. Plankton diversity in Anthropocene: Shipping vs. aquaculture along the eastern Adriatic coast assessed through DNA metabarcoding. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 807:151043. [PMID: 34673064 DOI: 10.1016/j.scitotenv.2021.151043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 10/11/2021] [Accepted: 10/13/2021] [Indexed: 06/13/2023]
Abstract
Coastal ecosystems globally are exposed to the most pervasive anthropogenic activities, caused by a suite of human infrastructure and enterprises such as shipping ports, aquaculture facilities, fishing, and tourism. These anthropogenic activities may lead to changes in ecosystem biodiversity, followed by loss of ecosystem functioning and services. Shipping industry and aquaculture have also been recognized as the main vectors for introduction of marine non-indigenous species (NIS) worldwide. In this study, we used DNA metabarcoding-based methods to investigate plankton biodiversity under varying anthropogenic pressures (shipping and bivalve aquaculture) along the eastern Adriatic coast (the northernmost part of the Mediterranean Sea). Our comparative assessment revealed similar community structures among investigated coastal locations (Northern, Central and Southern Adriatic). When the whole plankton communities were considered, they did not differ significantly between port and aquaculture sites. However, the proportion of the unique zOTUs in the port samples was remarkably higher than that in aquaculture sites (40.5% vs 8.2%), indicating that port areas may receive higher abundance and species richness of NIS than aquaculture sites. Further important difference between the two types of anthropogenically impacted habitats was a high abundance of three notorious invaders - M. leidyi, M. gigas, and H. elegans in late summer at the aquaculture site in Northern Adriatic. Therefore, the plankton community of the area is under pressure not only from aquaculture activities, but also establishment of NIS. Port areas are probably under greater introduction pressure from NIS, but aquaculture sites may experience greater community changes due to their establishment.
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Affiliation(s)
- Yaping Lin
- Key Laboratory of Ecology and Environment in Minority Areas (Minzu University of China), National Ethnic Affairs Commission, Beijing 100081, China; College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China; GEOMAR Helmholtz-Zentrum für Ozeanforschung Kiel, Düsternbrooker Weg 20, 24105 Kiel, Germany; Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 18 Shuangqing Road, Haidian District, Beijing 100085, China.
| | - Olja Vidjak
- Institute of Oceanography and Fisheries, Šetalište Ivana Meštrovića 63, 21000 Split, Croatia
| | - Daria Ezgeta-Balić
- Institute of Oceanography and Fisheries, Šetalište Ivana Meštrovića 63, 21000 Split, Croatia
| | | | - Tanja Šegvić-Bubić
- Institute of Oceanography and Fisheries, Šetalište Ivana Meštrovića 63, 21000 Split, Croatia
| | - Nika Stagličić
- Institute of Oceanography and Fisheries, Šetalište Ivana Meštrovića 63, 21000 Split, Croatia
| | - Aibin Zhan
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 18 Shuangqing Road, Haidian District, Beijing 100085, China; University of Chinese Academy of Sciences, 19A Yuquan Road, Shijingshan District, Beijing 100049, China
| | - Elizabeta Briski
- GEOMAR Helmholtz-Zentrum für Ozeanforschung Kiel, Düsternbrooker Weg 20, 24105 Kiel, Germany
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21
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Sun X, Dong Z, Zhang W, Sun X, Hou C, Liu Y, Zhang C, Wang L, Wang Y, Zhao J, Chen L. Seasonal and spatial variations in nutrients under the influence of natural and anthropogenic factors in coastal waters of the northern Yellow Sea, China. MARINE POLLUTION BULLETIN 2022; 175:113171. [PMID: 34844749 DOI: 10.1016/j.marpolbul.2021.113171] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2021] [Revised: 11/13/2021] [Accepted: 11/15/2021] [Indexed: 06/13/2023]
Abstract
Analysis of the common and most influential natural and anthropogenic activities on the spatiotemporal variation in nutrients at a multiannual scale is important. Eleven cruises from 2015 to 2017 were carried out to better elucidate the seasonal and spatial variations in nutrients, as well as the impact factors on dissolved inorganic nitrogen (DIN), phosphorus (DIP) and silicate (DSi). Both nutrient concentrations and forms showed similar and significant seasonal variations over the 3 years, and were closely related to the biomass and species of phytoplankton. Terrestrial inputs had significant effects on the spatial distribution of nutrients throughout the year, especially in the surface water, which showed DIN > DIP>DSi. In summer, shellfish aquaculture and hypoxia jointly affected the spatial distribution of nutrients. The bottom water nutrient concentrations in the aquaculture area were 1.1-2.3 times higher than those outside of the aquaculture area. Seasonal hypoxia can increase the release of DSi and NH4+ from the sediment to the water. In summary, anthropogenic activities and physical conditions jointly influenced the nutrient distributions.
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Affiliation(s)
- Xiyan Sun
- Muping Coastal Environmental Research Station, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong 264003, P.R. China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, Shandong 266071, PR China; Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong 264003, PR China
| | - Zhijun Dong
- Muping Coastal Environmental Research Station, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong 264003, P.R. China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, Shandong 266071, PR China; Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong 264003, PR China
| | - Wenjing Zhang
- Muping Coastal Environmental Research Station, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong 264003, P.R. China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, Shandong 266071, PR China; Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong 264003, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Xiaohong Sun
- Shandong University at Weihai, Marine College, Wenhai, Shandong 264209, PR China
| | - Chaowei Hou
- Muping Coastal Environmental Research Station, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong 264003, P.R. China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, Shandong 266071, PR China; Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong 264003, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Yongliang Liu
- Muping Coastal Environmental Research Station, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong 264003, P.R. China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, Shandong 266071, PR China; Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong 264003, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Chen Zhang
- Muping Coastal Environmental Research Station, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong 264003, P.R. China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, Shandong 266071, PR China; Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong 264003, PR China
| | - Lei Wang
- Muping Coastal Environmental Research Station, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong 264003, P.R. China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, Shandong 266071, PR China; Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong 264003, PR China
| | - Yujue Wang
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, PR China
| | - Jianmin Zhao
- Muping Coastal Environmental Research Station, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong 264003, P.R. China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, Shandong 266071, PR China; Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong 264003, PR China
| | - Lingxin Chen
- Muping Coastal Environmental Research Station, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong 264003, P.R. China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, Shandong 266071, PR China; Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong 264003, PR China.
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22
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Feeding Behavior, Shrinking, and the Role of Mucus in the Cannonball Jellyfish Stomolophus sp. 2 in Captivity. DIVERSITY 2022. [DOI: 10.3390/d14020103] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The importance of mucus produced by jellyfish species remains as understudied as their feeding behavior. Here, we study medusae under captivity, ascertain the role of mucus, and describe its feeding behavior. Between February and March 2019, live adult cannonball jellyfish, Stomolophus sp. 2, were collected in Las Guásimas Bay (Gulf of California, Mexico) and were offered fish eggs, mollusk “D” larvae, or Artemia nauplii in 4-day trials. Descriptions of feeding structures were provided for S. sp. 2. Digitata adhere food and scapulets fragment them, which, driven by water flow, pass via transport channels to the esophagus and the gastrovascular chamber where food is digested. Due to stress by handling, medusae produced mucus and water, lost feeding structures, and decreased in size. Based on our observations and a thorough literature review, we conclude that the production of mucus in S. sp. 2 plays several roles, facilitating capture and packing of prey, acting as a defense mechanism, and facilitating sexual reproduction; the latter improves the likelihood of a population persisting in the long run, because fertilized oocytes in mucus transform to planulae, settle, and transform into asexually reproducing polyps. Polyps live longer than the other life stages and are more resistant to adverse environmental conditions than the medusoid sexual stage.
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23
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Bachiller E, Giménez J, Albo‐Puigserver M, Pennino MG, Marí‐Mena N, Esteban A, Lloret‐Lloret E, Bellido JM, Coll M. Trophic niche overlap between round sardinella ( Sardinella aurita) and sympatric pelagic fish species in the Western Mediterranean. Ecol Evol 2021; 11:16126-16142. [PMID: 34824816 PMCID: PMC8601905 DOI: 10.1002/ece3.8293] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 10/12/2021] [Accepted: 10/15/2021] [Indexed: 01/27/2023] Open
Abstract
The northward expansion of round sardinella (Sardinella aurita) in the Mediterranean Sea, together with declines and fluctuations in biomass and landings of European sardine (Sardina pilchardus) and anchovy (Engraulis encrasicolus) observed in recent decades, may suggest potential inter-specific competition in the pelagic domain. The coexistence of sympatric zooplanktivorous fish species might therefore be exposed in part to trophic niche overlap and competition for food. Combining visual diet characterization under the microscope with DNA metabarcoding from stomach contents of fish collected in spring results show that predation on relatively large krill is equally important for sardinella than for the other two niche overlapping species. Furthermore, an important overlap is found in their isotopic niche, especially with anchovy, using nitrogen (δ15N) and carbon (δ13C) stable isotopes in muscle tissue. In fact, the three fish species are able to feed effectively in the whole prey size spectrum available during the sampled season, from the smallest diatoms and copepods to the larger prey (i.e., decapods and euphausiids), including fish larvae. Moreover, effective predation upon other large prey like siphonophores, which is observed only when multi-proxy analyses in stomach contents are applied, might also be relevant in the diet of sardinella. The overlapping diet composition in spring, together with the effective use of food resource by sardinella, can be of special interest in potential future scenarios with warmer water temperature leading to lower zooplankton and/or higher jellyfish availability, where sardinella may take advantage over other species due to its feeding plasticity.
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Affiliation(s)
- Eneko Bachiller
- Marine Renewable Resources DepartmentInstitute of Marine Science (ICM‐CSIC)BarcelonaSpain
| | - Joan Giménez
- Marine Renewable Resources DepartmentInstitute of Marine Science (ICM‐CSIC)BarcelonaSpain
- MaREI CentreEnvironmental Research InstituteUniversity College CorkCorkIreland
- School of Biological, Earth, and Environmental SciencesUniversity College CorkCorkIreland
| | - Marta Albo‐Puigserver
- Marine Renewable Resources DepartmentInstitute of Marine Science (ICM‐CSIC)BarcelonaSpain
- Centro de Ciências do MarUniversidade do Algarve (CCMAR‐UAlg)FaroPortugal
| | | | | | - Antonio Esteban
- Centro Oceanográfico de MurciaInstituto Español de OceanografíaSan Pedro del PinatarSpain
| | - Elena Lloret‐Lloret
- Marine Renewable Resources DepartmentInstitute of Marine Science (ICM‐CSIC)BarcelonaSpain
| | - José María Bellido
- Centro Oceanográfico de MurciaInstituto Español de OceanografíaSan Pedro del PinatarSpain
| | - Marta Coll
- Marine Renewable Resources DepartmentInstitute of Marine Science (ICM‐CSIC)BarcelonaSpain
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24
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Maúre EDR, Terauchi G, Ishizaka J, Clinton N, DeWitt M. Globally consistent assessment of coastal eutrophication. Nat Commun 2021; 12:6142. [PMID: 34686688 PMCID: PMC8536747 DOI: 10.1038/s41467-021-26391-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Accepted: 09/28/2021] [Indexed: 11/25/2022] Open
Abstract
Eutrophication is an emerging global issue associated with increasing anthropogenic nutrient loading. The impacts and extent of eutrophication are often limited to regions with dedicated monitoring programmes. Here we introduce the first global and Google Earth Engine-based interactive assessment tool of coastal eutrophication potential (CEP). The tool evaluates trends in satellite-derived chlorophyll-a (CHL) to devise a global map of CEP. Our analyses suggest that, globally, coastal waters (depth ≤200 m) covering ∼1.15 million km2 are eutrophic potential. Also, waters associated with CHL increasing trends-eutrophication potential-are twofold higher than those showing signs of recovery. The tool effectively identified areas of known eutrophication with severe symptoms, like dead zones, as well as those with limited to no information of the eutrophication. Our tool introduces the prospect for a consistent global assessment of eutrophication trends with major implications for monitoring Sustainable Development Goals (SDGs) and the application of Earth Observations in support of SDGs.
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Affiliation(s)
- Elígio de Raús Maúre
- Department of Research and Study, Northwest Pacific Region Environmental Cooperation Center, Toyama, Japan
| | - Genki Terauchi
- Department of Research and Study, Northwest Pacific Region Environmental Cooperation Center, Toyama, Japan
| | - Joji Ishizaka
- grid.27476.300000 0001 0943 978XInstitute for Space-Earth Environmental Research, Nagoya University, Nagoya, Japan
| | - Nicholas Clinton
- grid.420451.6Google LLC, 1600 Amphitheater Parkway, Mountain View, CA USA
| | - Michael DeWitt
- grid.420451.6Google LLC, 1600 Amphitheater Parkway, Mountain View, CA USA
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25
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Wang Y, Wang Q, Lian S, Yue Y, Gao Q, Peng S. Dietary jellyfish affect digestive enzyme activities and gut microbiota of Pampus argenteus. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY D-GENOMICS & PROTEOMICS 2021; 40:100923. [PMID: 34634570 DOI: 10.1016/j.cbd.2021.100923] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 09/25/2021] [Accepted: 09/28/2021] [Indexed: 10/20/2022]
Abstract
For many years, jellyfish were described as 'dead ends' in marine food webs, due to their high-water content and low nutritional value. However, it has been confirmed that silver pomfret (Pampus argenteus) has a particular preference for preying on jellyfish. In this study, we determined the effect of consuming jellyfish on the intestinal microbes of silver pomfret. Analysis of bacterial 16S rRNA gene amplicons showed that jellyfish had a dramatic impact on the composition of the gut microbiota. The content of Proteobacteria was reduced from 99% to 51%, while Firmicutes, Bacteroidetes and Actinobacteria increased, accounting for 35%, 9% and 2% of the total flora, respectively. At the genus level, the content of Photobacterium decreased sharply to <1% of the total flora. By contrast, Lactobacillus, Burkholderia and Sphingomonas increased to 12%, 9% and 7% of the total flora, respectively. After feeding jellyfish, the functions of intestinal microbes and the activity of digestive enzymes also changed, resulting in better digestion and absorption of jellyfish. The results provide insights into the specific bacterial taxa within the silver pomfret intestinal microbiome that are impacted by jellyfish. Silver pomfret can better digest and absorb jellyfish by adjusting the intestinal microbial composition. The findings provide a theoretical basis for the digestive mechanism by which silver pomfret consume jellyfish.
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Affiliation(s)
- Yabing Wang
- Key Laboratory of Marine and Estuarine Fisheries, Ministry of Agriculture, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, People's Republic of China
| | - Qian Wang
- Key Laboratory of Marine and Estuarine Fisheries, Ministry of Agriculture, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, People's Republic of China
| | - Shiya Lian
- Key Laboratory of Marine and Estuarine Fisheries, Ministry of Agriculture, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, People's Republic of China
| | - Yanfeng Yue
- Key Laboratory of Marine and Estuarine Fisheries, Ministry of Agriculture, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, People's Republic of China
| | - Quanxin Gao
- College of Life Science, Huzhou University, Huzhou 313000, People's Republic of China
| | - Shiming Peng
- Key Laboratory of Marine and Estuarine Fisheries, Ministry of Agriculture, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, People's Republic of China; College of Life Science, Huzhou University, Huzhou 313000, People's Republic of China.
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26
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De Rinaldis G, Leone A, De Domenico S, Bosch-Belmar M, Slizyte R, Milisenda G, Santucci A, Albano C, Piraino S. Biochemical Characterization of Cassiopea andromeda (Forsskål, 1775), Another Red Sea Jellyfish in the Western Mediterranean Sea. Mar Drugs 2021; 19:md19090498. [PMID: 34564160 PMCID: PMC8472248 DOI: 10.3390/md19090498] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 08/27/2021] [Accepted: 08/28/2021] [Indexed: 11/16/2022] Open
Abstract
Increasing frequency of native jellyfish proliferations and massive appearance of non-indigenous jellyfish species recently concur to impact Mediterranean coastal ecosystems and human activities at sea. Nonetheless, jellyfish biomass may represent an exploitable novel resource to coastal communities, with reference to its potential use in the pharmaceutical, nutritional, and nutraceutical Blue Growth sectors. The zooxanthellate jellyfish Cassiopea andromeda, Forsskål, 1775 (Cnidaria, Rhizostomeae) entered the Levant Sea through the Suez Canal and spread towards the Western Mediterranean to reach Malta, Tunisia, and recently also the Italian coasts. Here we report on the biochemical characterization and antioxidant activity of C. andromeda specimens with a discussion on their relative biological activities. The biochemical characterization of the aqueous (PBS) and hydroalcoholic (80% ethanol) soluble components of C. andromeda were performed for whole jellyfish, as well as separately for umbrella and oral arms. The insoluble components were hydrolyzed by sequential enzymatic digestion with pepsin and collagenase. The composition and antioxidant activity of the insoluble and enzymatically digestible fractions were not affected by the pre-extraction types, resulting into collagen- and non-collagen-derived peptides with antioxidant activity. Both soluble compounds and hydrolyzed fractions were characterized for the content of proteins, phenolic compounds, and lipids. The presence of compounds coming from the endosymbiont zooxanthellae was also detected. The notable yield and the considerable antioxidant activity detected make this species worthy of further study for its potential biotechnological sustainable exploitation.
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Affiliation(s)
- Gianluca De Rinaldis
- Institute of Sciences of Food Production (CNR-ISPA, Unit of Lecce), National Research Council, Via Monteroni, 73100 Lecce, Italy; (G.D.R.); (S.D.D.); (C.A.)
- Department of Biotechnology Chemistry and Pharmacy (DBCF), Università Degli Studi Di Siena, Via A. Moro, 53100 Siena, Italy;
| | - Antonella Leone
- Institute of Sciences of Food Production (CNR-ISPA, Unit of Lecce), National Research Council, Via Monteroni, 73100 Lecce, Italy; (G.D.R.); (S.D.D.); (C.A.)
- Consorzio Nazionale Interuniversitario per le Scienze del Mare (CoNISMa, Local Unit of Lecce), Via Monteroni, 73100 Lecce, Italy;
- Correspondence: ; Tel.: +39-0832-422615
| | - Stefania De Domenico
- Institute of Sciences of Food Production (CNR-ISPA, Unit of Lecce), National Research Council, Via Monteroni, 73100 Lecce, Italy; (G.D.R.); (S.D.D.); (C.A.)
- Department of Biological and Environmental Sciences and Technologies (DiSTeBA), Campus Ecotekne, University of Salento, Via Lecce-Monteroni, 73100 Lecce, Italy
| | - Mar Bosch-Belmar
- Laboratory of Ecology, Department of Earth and Marine Sciences (DiSTeM), University of Palermo, 90128 Palermo, Italy;
| | - Rasa Slizyte
- Department of Fisheries and New Biomarine Industry, SINTEF Ocean, Brattørkaia 17C, 7010 Trondheim, Norway;
| | - Giacomo Milisenda
- Centro Interdipartimentale della Sicilia, Stazione Zoologica Anton Dohrn, Lungomare Cristoforo Colombo, 90142 Palermo, Italy;
| | - Annalisa Santucci
- Department of Biotechnology Chemistry and Pharmacy (DBCF), Università Degli Studi Di Siena, Via A. Moro, 53100 Siena, Italy;
| | - Clara Albano
- Institute of Sciences of Food Production (CNR-ISPA, Unit of Lecce), National Research Council, Via Monteroni, 73100 Lecce, Italy; (G.D.R.); (S.D.D.); (C.A.)
| | - Stefano Piraino
- Consorzio Nazionale Interuniversitario per le Scienze del Mare (CoNISMa, Local Unit of Lecce), Via Monteroni, 73100 Lecce, Italy;
- Department of Biological and Environmental Sciences and Technologies (DiSTeBA), Campus Ecotekne, University of Salento, Via Lecce-Monteroni, 73100 Lecce, Italy
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27
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Single-Use Plastic Bans: Exploring Stakeholder Perspectives on Best Practices for Reducing Plastic Pollution. ENVIRONMENTS 2021. [DOI: 10.3390/environments8080081] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
In this study, we conducted and documented workshops and interviews in Norway and Slovenia to identify stakeholder and future generation opinions and mitigation strategies for solving one of the most prominent environmental issues: plastic pollution. As part of the EU H2020 project GoJelly, stakeholders were brought together to explore their perceptions on considering jellyfish mucus as a new resource to contribute to reducing plastic pollution from entering the marine environment. The study was conducted in the spring of 2019, in a context directly after the European Union (EU) announced its Directive to ban the most commonly used single-use plastic (SUP) items. The study applied the snowball method as a methodological choice to identify relevant stakeholders. Systems thinking was utilized as a participatory modelling approach, which allowed for the creation of conceptual mind maps from the various workshops and interviews, to understand consumers’ consciousness, and to map out ideas on plastic pollution reduction. Plastic pollution takes place on a global scale and stakeholders discussed their individual perceptions of national and international solutions that could be put in place to solve it, including the opportunities around utilizing jellyfish mucus to filter and capture micro- and nanoplastic. We found that industry stakeholders in both case areas were generally more accepting of policy and increased innovation moving forward, but placed weight on the scientific community to conduct more research on the pollution issue and propose solutions. Future generation stakeholders (youth aged 14–18), however, put emphasis on consumer behavior and buying patterns of single-use products fueling the plastic crisis.
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28
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Impact of ocean warming and ocean acidification on asexual reproduction and statolith formation of the symbiotic jellyfish Cotylorhiza tuberculata. PLoS One 2021; 16:e0254983. [PMID: 34347820 PMCID: PMC8336884 DOI: 10.1371/journal.pone.0254983] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Accepted: 07/07/2021] [Indexed: 12/01/2022] Open
Abstract
Ocean acidification and warming are challenging marine organisms and ecosystems around the world. The synergetic effects of these two climate change stressors on jellyfish remain still understudied. Here, we examine the independent and combined effects of these two environmental variables on polyp population dynamics of the Mediterranean jellyfish Cotylorhiza tuberculata. An experiment was conducted to examine asexual reproduction by budding and strobilation considering current and ca. 2100 winter (Trial 1, 36 days) and summer (Trial 2, 36 days) conditions under the RCP8.5 (IPCC 2013). In Trial 1, a temperature of 18°C and two pH levels (current: 7.9 and, reduced: 7.7) were tested. Trial 2 considered two temperature levels 24°C and 30°C, under current and reduced acidification conditions (8.0 and 7.7, respectively). Ephyrae size and statolith formation of released ephyrae from polyps exposed to summer temperatures under both acidification treatment was also analyzed. Zooxanthellae density inside the polyps throughout the experiment was measured. C. tuberculata polyps could cope with the conditions mimicked in all experimental treatments and no significant effect of pH, temperature, or the combination of both variables on the abundance of polyps was observed. At 18°C, strobilation was reduced under high PCO2 conditions. Under summer treatments (24°C and 30°C), percentage strobilation was very low and several released ephyrae suffered malformations and reduced size, as a consequence of reduced pH and elevated temperatures, separately. The number of statoliths was not affected by pH or temperature, however, bigger statoliths were formed at elevated temperatures (30°C). Finally, zooxanthellae density was not affected by experimental conditions, even if, the duration of the experiment significantly affected symbiont concentration. Our results show that even though polyps of C. tuberculata would thrive the future worst scenario predicted for the Mediterranean Sea, their capacity to undergo a proper strobilation and to produce healthy ephyrae will be more vulnerable to climate induced environmental conditions, thereby affecting medusae recruitment and, therefore, population dynamics of the species.
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Karati KK, Ashadevi CR, Harikrishnachari NV, Valliyodan S, Kumaraswami M, Naidu SA, Ramanamurthy MV. Hydrodynamic variability and nutrient status structuring the mesozooplankton community of the estuaries along the west coast of India. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:42477-42495. [PMID: 33813712 DOI: 10.1007/s11356-021-13634-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 03/22/2021] [Indexed: 06/12/2023]
Abstract
The influence of distinct tidal characteristics and nutrient status on mesozooplankton community was studied in six major estuaries along the west coast of India during the late-monsoon (MS) and post-monsoon (PM) periods. The macro-tidal estuaries in the north (Amba and Thane) exhibited higher nutrient concentration compared to the micro- and meso-tidal estuaries located in the south (Cochin and Nethravati) and central (Zuari and Mandovi) west coast of India. The markedly higher nitrate and phosphate levels in the macro-tidal estuaries during PM indicated anthropogenic contributions from domestic and industrial effluents, which significantly impacted the mesozooplankton community structure. Nutrient enrichments favored higher phytoplankton standing stock leading to low DO levels. In the micro- and meso-tidal estuaries, meso- and euryhaline copepods dominated whereas in the macro-tidal estuaries, the copepod community was dominated by euryhaline and coastal species. Furthermore, the high-saline eutrophic environment of macro-tidal estuaries formed congenial for the increased jellyfish preponderance during PM. The predation pressure exerted by the jellyfish population on the crustacean zooplankton and ichthyoplankton exerted an adverse impact on the potential fishery stock in the macro-tidal estuaries. Thus, the study reveals that the nutrient enrichment favoring a shift in the mesozooplankton community structure from nutritionally superior crustacean plankton to less desirable jellyfishes, which in turn, may lead to a threat on the estuarine pelagic energy transfer and ecosystem deliverables.
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Unfolding Jellyfish Bloom Dynamics along the Mediterranean Basin by Transnational Citizen Science Initiatives. DIVERSITY 2021. [DOI: 10.3390/d13060274] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Science is addressing global societal challenges, and due to limitations in research financing, scientists are turning to the public at large to jointly tackle specific environmental issues. Citizens are therefore increasingly involved in monitoring programs, appointed as citizen scientists with potential to delivering key data at near to no cost to address environmental challenges, therein fostering scientific knowledge and advising policy- and decision-makers. One of the first and most successful examples of marine citizen science in the Mediterranean is represented by the integrative and collaborative implementation of several jellyfish-spotting campaigns in Italy, Spain, Malta, and Tunisia starting in 2009. Altogether, in terms of time coverage, geographic extent, and number of citizen records, these represent the most effective marine citizen science campaigns thus far implemented in the Mediterranean Sea. Here, we analyzed a collective database merging records over the above four countries, featuring more than 100,000 records containing almost 25,000 observations of jellyfish specimens collected over a period of 3 to 7 years (from 2009 to 2015) by citizen scientists participating in any of the national citizen science programs included in this analysis. Such a wide citizen science exercise demonstrates a valuable and cost-effective tool to understanding ecological drivers of jellyfish proliferation over the Western and Central Mediterranean basins, as well as a powerful contribution to developing tailored adaptation and management strategies; mitigating jellyfish impacts on human activities in coastal zones; and supporting implementation of marine spatial planning, Blue Growth, and conservation strategies.
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Loveridge A, Pitt KA, Lucas CH, Warnken J. Extreme changes in salinity drive population dynamics of Catostylus mosaicus medusae in a modified estuary. MARINE ENVIRONMENTAL RESEARCH 2021; 168:105306. [PMID: 33839400 DOI: 10.1016/j.marenvres.2021.105306] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 03/02/2021] [Accepted: 03/11/2021] [Indexed: 06/12/2023]
Abstract
Modifications to estuaries through the construction of barrages alter the natural dynamics of inhabitant species by controlling freshwater inputs into those systems. To understand the effects of modified freshwater flows on a native scyphozoan jellyfish, Catostylus mosaicus, and to identify the environmental drivers of medusa occurrence, we analysed a 20-year observational dataset composed of 11 environmental variables and medusa presence/absence from 15 sampling stations located below the Fitzroy Barrage, in the Fitzroy River, Queensland. Major decreases in salinity (minimum salinity 0) occurred approximately 16 times during the 20-year period and medusae disappeared from the estuary following every major freshwater flow event. Salinity was identified as the most influential variable contributing to variation in the number of upper estuary sites reporting jellyfish. We then ran two laboratory experiments to test the following hypotheses: (i) prolonged decreases in salinity impair survival, pulsation, and respiration rates of C. mosaicus medusae; and (ii) transient decreases temporarily impair pulsation and respiration but medusae recover when salinity returns to normal levels. Medusae were unable to survive extended periods at extreme low salinities, such that they would experience when a barrage opens fully, but had significantly higher survival and recovery rates following smaller, transient changes to salinity that might occur following a moderate rainfall event. This demonstrates for the first time that modification of freshwater flow by a barrage regulates the population dynamics of an estuarine jellyfish, and highlights the need for robust, long term datasets, and to firmly embed experimental approaches in realistic ecological contexts.
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Affiliation(s)
- Alexandra Loveridge
- Ocean and Earth Science, University of Southampton, Southampton, United Kingdom.
| | - Kylie A Pitt
- Australian Rivers Institute - Coasts and Estuaries, Griffith School of Environment and Science, Griffith University, Gold Coast, QLD, Australia
| | - Cathy H Lucas
- Ocean and Earth Science, University of Southampton, Southampton, United Kingdom
| | - Jan Warnken
- Australian Rivers Institute - Coasts and Estuaries, Griffith School of Environment and Science, Griffith University, Gold Coast, QLD, Australia
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Peng S, Hao W, Li Y, Wang L, Sun T, Zhao J, Dong Z. Bacterial Communities Associated With Four Blooming Scyphozoan Jellyfish: Potential Species-Specific Consequences for Marine Organisms and Humans Health. Front Microbiol 2021; 12:647089. [PMID: 34025606 PMCID: PMC8131558 DOI: 10.3389/fmicb.2021.647089] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Accepted: 04/14/2021] [Indexed: 12/17/2022] Open
Abstract
Cnidarians have large surface areas available for colonization by microbial organisms, which serve a multitude of functions in the environment. However, relatively few studies have been conducted on scyphozoan-associated microbial communities. Blooms of scyphozoan species are common worldwide and can have numerous deleterious consequences on the marine ecosystem. Four scyphozoan species, Aurelia coerulea, Cyanea nozakii, Nemopilema nomurai, and Rhopilema esculentum, form large blooms in Chinese seas. In this study, we analyzed the bacterial communities associated with these four jellyfish based on 16S rRNA gene sequencing. We found that the bacterial communities associated with each scyphozoan species were significantly different from each other and from those of the surrounding seawater. There were no significant differences between the bacterial communities associated with different body parts of the four scyphozoan jellyfish. Core bacteria in various compartments of the four scyphozoan taxa comprised 57 OTUs (Operational Taxonomic Units), dominated by genera Mycoplasma, Vibrio, Ralstonia, Tenacibaculum, Shingomonas and Phyllobacterium. FAPROTAX function prediction revealed that jellyfish could influence microbially mediated biogeochemical cycles, compound degradation and transmit pathogens in regions where they proliferate. Finally, Six genera of potentially pathogenic bacteria associated with the scyphozoans were detected: Vibrio, Mycoplasma, Ralstonia, Tenacibaculum, Nautella, and Acinetobacter. Our study suggests that blooms of these four common scyphozoans may cause jellyfish species-specific impacts on element cycling in marine ecosystems, and serve as vectors of pathogenic bacteria to threaten other marine organisms and human health.
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Affiliation(s)
- Saijun Peng
- Muping Coastal Environment Research Station, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Wenjin Hao
- School of Life Sciences, Nantong University, Nantong, China
| | - Yongxue Li
- Muping Coastal Environment Research Station, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Lei Wang
- Muping Coastal Environment Research Station, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China
| | - Tingting Sun
- Muping Coastal Environment Research Station, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Jianmin Zhao
- Muping Coastal Environment Research Station, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China.,Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China.,Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, China
| | - Zhijun Dong
- Muping Coastal Environment Research Station, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China.,Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China.,Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, China
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Spatial heterogeneity of Pelagia noctiluca ephyrae linked to water masses in the Western Mediterranean. PLoS One 2021; 16:e0249756. [PMID: 33826668 PMCID: PMC8026071 DOI: 10.1371/journal.pone.0249756] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Accepted: 03/24/2021] [Indexed: 11/19/2022] Open
Abstract
Pelagia noctiluca is the most common jellyfish in the Western Mediterranean Sea, living in oceanic waters with a holoplanktonic lifecycle. Frequent outbreaks have been well documented in coastal areas, yet little is known about their offshore distribution. In this study we address the relationship between oceanographic structures and the distribution of P. noctiluca ephyrae along the central continental slope of the Western Mediterranean, covering a wide latitudinal gradient, during July-August 2016. The region is characterized by a rich and complex mesoscale surface circulation driven by the inflow of Atlantic Water into the Western Mediterranean through the Strait of Gibraltar. The results revealed a high variability in the ephyrae spatial paterns related with different water masses and the resulting mesoscale hydrographic features. Their horizontal distribution showed a clear latitudinal gradient with high abundances in the south, associated with recent Atlantic Water, and low abundances or absence in the north, in coincidence with the old Atlantic Water transported by the Northern Current. Ephyrae showed diel vertical migrations of short-extent in the first 50 m, with a wide distribution above the thermocline and the Deep Chlorophyll Maximum during daytime, being more concentrated towards the surface at night. The results suggest the population connectivity of P. noctiluca between the Atlantic and the Mediterranean. In that case, the abundance variability of the species in the Mediterranean could be modulated by its entrance associated with the inflow of Atlantic Water through the Strait of Gibraltar.
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Alternations in the liver metabolome, skin and serum antioxidant function of silver pomfret ( Pampus Argenteus) is induced by jellyfish feeding. 3 Biotech 2021; 11:192. [PMID: 33927983 DOI: 10.1007/s13205-021-02702-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Accepted: 02/23/2021] [Indexed: 10/21/2022] Open
Abstract
Many fish species are known to feed on jellyfish. Herein, we observed the effects of jellyfish feeding on silver pomfret using gas chromatography tandem time-of-flight mass spectrometry (GC-TOF-MS) based on metabolomics. We studied the effects of feeding on jellyfish on skin and serum immune of silver pomfret. Healthy silver pomfret (initial weight, 13.40 ± 1.565 g) was divided into two groups: control and feeding. The pomfrets were fed jellyfish at 2, 6, 12, 24, and 72 h, and samples were obtained. Statistical analysis revealed that after jellyfish feeding, most serum immune indicators did not show a significant change; however, skin immune indicators indicated that silver pomfret elicit a stress response on encountering jellyfish, gradually adapting to their presence. We therefore conducted further experiments involving two groups: group A, which was not fed any extra jellyfish, and group B, which was fed extra jellyfish (approximately 10% weight of silver pomfret) every day for 60 days. Orthogonal partial least squares discriminant analysis led to the identification of stronger biomarkers, with the liver metabolome showing obvious variations between the groups (group B vs. A). After feeding jellyfish by silver pomfret, some amino acids, amines, and unsaturated fatty acids in the liver tissue showed a significant increase. Our results, thus, not only reveal changes in physiological indices of silver pomfret after feeding on jellyfish but also provide a new idea for further optimizing the feed formula for silver pomfret culture.
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Mammone M, Ferrier-Pagés C, Lavorano S, Rizzo L, Piraino S, Rossi S. High photosynthetic plasticity may reinforce invasiveness of upside-down zooxanthellate jellyfish in Mediterranean coastal waters. PLoS One 2021; 16:e0248814. [PMID: 33739995 PMCID: PMC7978352 DOI: 10.1371/journal.pone.0248814] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Accepted: 03/06/2021] [Indexed: 12/05/2022] Open
Abstract
Ecological profiling of non-native species is essential to predict their dispersal and invasiveness potential across different areas of the world. Cassiopea is a monophyletic taxonomic group of scyphozoan mixotrophic jellyfish including C. andromeda, a recent colonizer of sheltered, shallow-water habitats of the Mediterranean Sea, such as harbors and other light-limited, eutrophic coastal habitats. To assess the ecophysiological plasticity of Cassiopea jellyfish and their potential to spread across the Mare Nostrum by secondary introductions, we investigated rapid photosynthetic responses of jellyfish to irradiance transitions—from reduced to increased irradiance conditions (as paradigm of transition from harbors to coastal, meso/oligotrophic habitats). Laboratory incubation experiments were carried out to compare oxygen fluxes and photobiological variables in Cassiopea sp. immature specimens pre-acclimated to low irradiance (PAR = 200 μmol photons m−2 s−1) and specimens rapidly exposed to higher irradiance levels (PAR = 500 μmol photons m−2 s−1). Comparable photosynthetic potential and high photosynthetic rates were measured at both irradiance values, as also shown by the rapid light curves. No significant differences were observed in terms of symbiont abundance between control and treated specimens. However, jellyfish kept at the low irradiance showed a higher content in chlorophyll a and c (0.76±0.51SD vs 0.46±0.13SD mg g-1 AFDW) and a higher Ci (amount of chlorophyll per cell) compared to jellyfish exposed to higher irradiance levels. The ratio between gross photosynthesis and respiration (P:R) was >1, indicating a significant input from the autotrophic metabolism. Cassiopea sp. specimens showed high photosynthetic performances, at both low and high irradiance, demonstrating high potential to adapt to sudden changes in light exposure. Such photosynthetic plasticity, combined with Cassiopea eurythermal tolerance and mixotrophic behavior, jointly suggest the upside-down jellyfish as a potentially successful invader in the scenario of a warming Mediterranean Sea.
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Affiliation(s)
- Marta Mammone
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, University of Salento, Lecce, Italy
- * E-mail: (MM); (SP); (SR)
| | | | | | - Lucia Rizzo
- Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, Napoli, Italy
| | - Stefano Piraino
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, University of Salento, Lecce, Italy
- CoNISMa, Consorzio Nazionale Interuniversitario per le Scienze del Mare, Rome, Italy
- * E-mail: (MM); (SP); (SR)
| | - Sergio Rossi
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, University of Salento, Lecce, Italy
- CoNISMa, Consorzio Nazionale Interuniversitario per le Scienze del Mare, Rome, Italy
- Labomar, Universidade Federal do Ceará, Fortaleza, Brazil
- * E-mail: (MM); (SP); (SR)
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Teng G, Jin X, Fu C, Guan L, Jin Y, Chen Y, Yang T, Ding Q, Shan X. Is seafloor litter contributing to sea anemone blooms? THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 759:143479. [PMID: 33213926 DOI: 10.1016/j.scitotenv.2020.143479] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2020] [Revised: 10/16/2020] [Accepted: 10/25/2020] [Indexed: 06/11/2023]
Abstract
Increasing marine litter have become a global environmental disaster. The accumulation of seafloor litter (generally includes anthropogenic litter and natural debris) could change the habitat of benthic organisms and thereby affecting their population dynamics including spatial distribution. Metridium senile fimbriatum (i.e., M. senile), a fast-growing sea anemone, has become a dominant species of benthic community in the north Yellow Sea in recent years. In this study, we tested the hypothesis that the distribution of M. senile is positively correlated with that of seafloor litter, using data collected on seafloor litter and M. senile from three fisheries-independent bottom trawl surveys in the Yellow Sea in May, August and November 2019. Gradient Forest Model (GFM) was used to select appropriate response variables for characterizing the distribution of M. senile, and evaluate the influences of potential environmental factors on M. senile distribution. Surface area of anthropogenic litter (represented as 'Anthropogenic litter'), surface area of natural debris (represented as 'Natural debris') and latitude (Lat) were identified as the most significant variables influencing the distribution of M. senile. Furthermore, Generalized Additive Mixed Model (GAMM) was applied to model the abundance distribution of M. senile in terms of significant environmental variables, and evaluate its correlations with 'Anthropogenic litter' and 'Natural debris'. The best fitting GAMM showed that the abundance of M. senile has a significantly positive association with 'Anthropogenic litter' and 'Natural debris'. We therefore speculated that accumulation of seafloor litter might contribute to the bloom of M. senile, given that seafloor litter could serve as "vectors" for M. senile dispersal and provide with a preferable "natural habitat" for their settlement.
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Affiliation(s)
- Guangliang Teng
- College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China; Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture and Rural Affairs, Shandong Provincial Key Laboratory of Fishery Resources and Ecological Environment, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China
| | - Xianshi Jin
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture and Rural Affairs, Shandong Provincial Key Laboratory of Fishery Resources and Ecological Environment, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China; Function Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology, Qingdao, China
| | - Caihong Fu
- Fisheries and Oceans Canada, Pacific Biological Station, Nanaimo, Canada
| | - Lisha Guan
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture and Rural Affairs, Shandong Provincial Key Laboratory of Fishery Resources and Ecological Environment, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China
| | - Yue Jin
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture and Rural Affairs, Shandong Provincial Key Laboratory of Fishery Resources and Ecological Environment, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China
| | - Yunlong Chen
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture and Rural Affairs, Shandong Provincial Key Laboratory of Fishery Resources and Ecological Environment, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China
| | - Tao Yang
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture and Rural Affairs, Shandong Provincial Key Laboratory of Fishery Resources and Ecological Environment, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China
| | - Qi Ding
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture and Rural Affairs, Shandong Provincial Key Laboratory of Fishery Resources and Ecological Environment, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China
| | - Xiujuan Shan
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture and Rural Affairs, Shandong Provincial Key Laboratory of Fishery Resources and Ecological Environment, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China; Function Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology, Qingdao, China.
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Mitchell EG, Wallace MI, Smith VA, Wiesenthal AA, Brierley AS. Bayesian Network Analysis reveals resilience of the jellyfish Aurelia aurita to an Irish Sea regime shift. Sci Rep 2021; 11:3707. [PMID: 33580138 PMCID: PMC7881242 DOI: 10.1038/s41598-021-82825-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Accepted: 01/25/2021] [Indexed: 11/10/2022] Open
Abstract
Robust time-series of direct observations of jellyfish abundance are not available for many ecosystems, leaving it difficult to determine changes in jellyfish abundance, the possible causes (e.g. climate change) or the consequences (e.g. trophic cascades). We sought an indirect ecological route to reconstruct jellyfish abundance in the Irish Sea: since zooplankton are jellyfish prey, historic variability in zooplankton communities may provide proxies for jellyfish abundance. We determined the Bayesian ecological network of jellyfish-zooplankton dependencies using jellyfish- and zooplankton-abundance data obtained using nets during a 2-week cruise to the Irish Sea in 2008. This network revealed that Aurelia aurita abundance was dependent on zooplankton groups Warm Temperate and Temperate Oceanic as defined by previous zooplankton ecology work. We then determined historic zooplankton networks across the Irish Sea from abundance data from Continuous Plankton Recorder surveys conducted between 1970 and 2000. Transposing the 2008 spatial dependencies onto the historic networks revealed that Aurelia abundance was more strongly dependent over time on sea surface temperature than on the zooplankton community. The generalist predatory abilities of Aurelia may have insulated this jellyfish over the 1985 regime shift when zooplankton composition in the Irish Sea changed abruptly, and also help explain its globally widespread distribution.
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Affiliation(s)
- Emily G Mitchell
- Pelagic Ecology Research Group, Scottish Oceans Institute, Gatty Marine Laboratory, School of Biology, University of St. Andrews, St Andrews, KY16 8LB, Scotland, UK. .,Centre for Biological Diversity, Sir Harold Mitchell Building, School of Biology, University of St. Andrews, St Andrews, KY16 9TF, Scotland, UK. .,Department of Zoology, University of Cambridge, Cambridge, CB2 3EJ, UK.
| | - Margaret I Wallace
- Pelagic Ecology Research Group, Scottish Oceans Institute, Gatty Marine Laboratory, School of Biology, University of St. Andrews, St Andrews, KY16 8LB, Scotland, UK.,Scottish Qualifications Authority, Optima Building, 58 Robertson St, Glasgow, G2 8DQ, UK
| | - V Anne Smith
- Centre for Biological Diversity, Sir Harold Mitchell Building, School of Biology, University of St. Andrews, St Andrews, KY16 9TF, Scotland, UK
| | - Amanda A Wiesenthal
- Pelagic Ecology Research Group, Scottish Oceans Institute, Gatty Marine Laboratory, School of Biology, University of St. Andrews, St Andrews, KY16 8LB, Scotland, UK.,Pharmaceutical Biology, Saarland University, 66123, Saarbrücken, Germany
| | - Andrew S Brierley
- Pelagic Ecology Research Group, Scottish Oceans Institute, Gatty Marine Laboratory, School of Biology, University of St. Andrews, St Andrews, KY16 8LB, Scotland, UK
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Biomonitoring of Heavy Metals: The Unexplored Role of Marine Sessile Taxa. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11020580] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Coastal areas are known to receive significant anthropogenic inputs, mainly deriving from metropolitan areas, industries, and activities related to tourism. Among these inputs, some trace elements are listed as priority pollutants in the European Water Framework Directive, due to their ability to bioaccumulate in organisms. Many studies have been conducted on heavy metals (HMs) accumulation and on their possible effects on different edible marine species. While the most studied sessile organisms are bivalves, in the current review, we focus our attention on other sessile taxa (sponges, cnidarians, bryozoans, polychaetes, cirripeds, and tunicates), proposed as bioindicators in coastal shallow waters. Although their potential as bioindicator tools has been repeatedly highlighted in the literature, these organisms are still poorly investigated and considered for monitoring. In this context, we analyze the available literature about this topic, in order to summarize the current knowledge and identify possible applications of these organisms in a bioremediation scenario.
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Thé J, Barroso HDS, Mammone M, Viana M, Batista Melo CS, Mies M, Banha TNS, Morandini AC, Rossi S, Soares MDO. Aquaculture facilities promote populational stability throughout seasons and increase medusae size for the invasive jellyfish Cassiopea andromeda. MARINE ENVIRONMENTAL RESEARCH 2020; 162:105161. [PMID: 33065521 DOI: 10.1016/j.marenvres.2020.105161] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 09/21/2020] [Accepted: 09/22/2020] [Indexed: 06/11/2023]
Abstract
Cassiopea jellyfish have successfully invaded several marine ecosystems worldwide. We investigated if Cassiopea andromeda grows larger (umbrella size) and if their populations are more stable in shrimp farms than in mangroves in the Brazilian coast. Our results show that jellyfish abundance is higher in the shrimp farm during the rainy season and in the mangrove during dry season. The population is stable during both seasons in the shrimp farm, but unstable in the mangroves, as jellyfish are absent during rainy season. Shrimp farm-associated jellyfish are three times larger than those in the mangroves, regardless of season. We recorded the largest (49.2 cm of umbrella diameter) ever C. andromeda individual in the shrimp farm. Unlike the mangroves, the shrimp farm provides environmental intra-annual stability that promotes jellyfish growth and population persistence. Therefore, C. andromeda populations can be seasonally dynamic and artificial environments such as aquaculture facilities may facilitate the invasion process.
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Affiliation(s)
- Jorge Thé
- Instituto de Ciências Do Mar (LABOMAR), Universidade Federal Do Ceará (UFC), Fortaleza, Brazil.
| | | | - Marta Mammone
- DiSTeBA, Campus Ecotekne, University of Salento, 73100, Lecce, Italy
| | - Michael Viana
- Instituto de Ciências Do Mar (LABOMAR), Universidade Federal Do Ceará (UFC), Fortaleza, Brazil
| | | | - Miguel Mies
- Instituto Oceanográfico, Universidade de São Paulo, São Paulo, Brazil
| | - Thomás N S Banha
- Instituto Oceanográfico, Universidade de São Paulo, São Paulo, Brazil
| | - André C Morandini
- Departamento de Zoologia, Instituto de Biociências, Universidade de São Paulo (USP), São Paulo, Brazil; Centro de Biologia Marinha, Universidade de São Paulo, São Sebastião, Brazil
| | - Sergio Rossi
- Instituto de Ciências Do Mar (LABOMAR), Universidade Federal Do Ceará (UFC), Fortaleza, Brazil; DiSTeBA, Campus Ecotekne, University of Salento, 73100, Lecce, Italy; Institut de Ciència i Tecnologia Ambientals (ICTA), Universitat Autònoma de Barcelona (UAB), Barcelona, Spain
| | - Marcelo de Oliveira Soares
- Instituto de Ciências Do Mar (LABOMAR), Universidade Federal Do Ceará (UFC), Fortaleza, Brazil; DiSTeBA, Campus Ecotekne, University of Salento, 73100, Lecce, Italy; Institut de Ciència i Tecnologia Ambientals (ICTA), Universitat Autònoma de Barcelona (UAB), Barcelona, Spain
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40
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Tinta T, Zhao Z, Escobar A, Klun K, Bayer B, Amano C, Bamonti L, Herndl GJ. Microbial Processing of Jellyfish Detritus in the Ocean. Front Microbiol 2020; 11:590995. [PMID: 33193256 PMCID: PMC7662693 DOI: 10.3389/fmicb.2020.590995] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Accepted: 09/30/2020] [Indexed: 11/13/2022] Open
Abstract
When jellyfish blooms decay, sinking jellyfish detrital organic matter (jelly-OM), rich in proteins and characterized by a low C:N ratio, becomes a significant source of OM for marine microorganisms. Yet, the key players and the process of microbial jelly-OM degradation and the consequences for marine ecosystems remain unclear. We simulated the scenario potentially experienced by the coastal pelagic microbiome after the decay of a bloom of the cosmopolitan Aurelia aurita s.l. We show that about half of the jelly-OM is instantly available as dissolved organic matter and thus, exclusively and readily accessible to microbes. During a typical decay of an A. aurita bloom in the northern Adriatic Sea about 100 mg of jelly-OM L-1 becomes available, about 44 μmol L-1 as dissolved organic carbon (DOC), 13 μmol L-1 as total dissolved nitrogen, 11 μmol L-1 of total hydrolyzable dissolved amino acids (THDAA) and 0.6 μmol L-1 PO4 3-. The labile jelly-OM was degraded within 1.5 days (>98% of proteins, ∼70% of THDAA, 97% of dissolved free amino acids and the entire jelly-DOC pool) by a consortium of Pseudoalteromonas, Alteromonas, and Vibrio. These bacteria accounted for >90% of all metabolically active jelly-OM degraders, exhibiting high bacterial growth efficiencies. This implies that a major fraction of the detrital jelly-OM is rapidly incorporated into biomass by opportunistic bacteria. Microbial processing of jelly-OM resulted in the accumulation of tryptophan, dissolved combined amino acids and inorganic nutrients, with possible implications for biogeochemical cycles.
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Affiliation(s)
- Tinkara Tinta
- Department of Functional and Evolutionary Ecology, Bio-Oceanography Unit, Faculty of Life Sciences, University of Vienna, Vienna, Austria.,Marine Biology Station Piran, National Institute of Biology, Piran, Slovenia
| | - Zihao Zhao
- Department of Functional and Evolutionary Ecology, Bio-Oceanography Unit, Faculty of Life Sciences, University of Vienna, Vienna, Austria.,Vienna Metabolomics Center, University of Vienna, Vienna, Austria
| | - Alvaro Escobar
- Department of Functional and Evolutionary Ecology, Bio-Oceanography Unit, Faculty of Life Sciences, University of Vienna, Vienna, Austria
| | - Katja Klun
- Marine Biology Station Piran, National Institute of Biology, Piran, Slovenia
| | - Barbara Bayer
- Department of Functional and Evolutionary Ecology, Bio-Oceanography Unit, Faculty of Life Sciences, University of Vienna, Vienna, Austria
| | - Chie Amano
- Department of Functional and Evolutionary Ecology, Bio-Oceanography Unit, Faculty of Life Sciences, University of Vienna, Vienna, Austria
| | - Luca Bamonti
- Department of Functional and Evolutionary Ecology, Bio-Oceanography Unit, Faculty of Life Sciences, University of Vienna, Vienna, Austria
| | - Gerhard J Herndl
- Department of Functional and Evolutionary Ecology, Bio-Oceanography Unit, Faculty of Life Sciences, University of Vienna, Vienna, Austria.,Vienna Metabolomics Center, University of Vienna, Vienna, Austria.,Department of Marine Microbiology and Biogeochemistry, Royal Netherlands Institute for Sea Research (NIOZ), Utrecht University, Den Burg, Netherlands
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41
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Bachiller E, Albo-Puigserver M, Giménez J, Pennino MG, Marí-Mena N, Esteban A, Lloret-Lloret E, Jadaud A, Carro B, Bellido JM, Coll M. A trophic latitudinal gradient revealed in anchovy and sardine from the Western Mediterranean Sea using a multi-proxy approach. Sci Rep 2020; 10:17598. [PMID: 33077761 PMCID: PMC7572414 DOI: 10.1038/s41598-020-74602-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 10/05/2020] [Indexed: 12/21/2022] Open
Abstract
This work combines state-of-the-art methods (DNA metabarcoding) with classic approaches (visual stomach content characterization and stable isotope analyses of nitrogen (δ15N) and carbon (δ13C)) to investigate the trophic ecology of anchovy (Engraulis encrasicolus) and sardine (Sardina pilchardus) at high taxonomic and spatial resolution in the Western Mediterranean Sea. Gut contents observed are in accordance with the dietary plasticity generally described for anchovy and sardine, suggesting a diet related to the opportunistic ingestion of available prey in a certain area and/or time. Genetic tools also showed modest inter-specific differences regarding ingested species. However, inter-specific and intra-specific differences in ingested prey frequencies and prey biomass reflected a latitudinal signal that could indicate a more effective predation on large prey like krill by anchovy versus sardine, as well as a generalized higher large prey ingestion by both species southwards. In fact, both species presented lower δ15N in the northernmost area. This latitudinal gradient indicates changes in the trophic ecology of anchovy and sardine that coincide with previously described better biological conditions for fish in the southern part of the study area as well as higher landings of both species in recent years.
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Affiliation(s)
- Eneko Bachiller
- Institut de Ciències del Mar (ICM-CSIC), Passeig Marítim de la Barceloneta, 37-49, 08003, Barcelona, Spain. .,AZTI, Sustainable Fisheries Management (Data), Basque Research and Technology Alliance (BRTA), Txatxarramendi uhartea z/g, 48395, Sukarrieta, Bizkaia (Basque Country), Spain.
| | - Marta Albo-Puigserver
- Institut de Ciències del Mar (ICM-CSIC), Passeig Marítim de la Barceloneta, 37-49, 08003, Barcelona, Spain
| | - Joan Giménez
- Institut de Ciències del Mar (ICM-CSIC), Passeig Marítim de la Barceloneta, 37-49, 08003, Barcelona, Spain
| | - Maria Grazia Pennino
- Instituto Español de Oceanografía, Centro Oceanográfico de Vigo, Subida Radio Faro, 50, 36390, Vigo, Spain
| | - Neus Marí-Mena
- AllGenetics and Biology SL, Edificio CICA, Campus de Elviña, 15008, A Coruña, Spain
| | - Antonio Esteban
- Instituto Español de Oceanografía, Centro Oceanográfico de Murcia, Varadero 1 Apdo 22, 30740, San Pedro del Pinatar, Murcia, Spain
| | - Elena Lloret-Lloret
- Institut de Ciències del Mar (ICM-CSIC), Passeig Marítim de la Barceloneta, 37-49, 08003, Barcelona, Spain
| | - Angelique Jadaud
- Marine Biodiversity, Exploitation and Conservation (MARBEC), Ifremer, University Montpellier, CNRS, IRD, Sète, France
| | - Belén Carro
- AllGenetics and Biology SL, Edificio CICA, Campus de Elviña, 15008, A Coruña, Spain
| | - José María Bellido
- Instituto Español de Oceanografía, Centro Oceanográfico de Murcia, Varadero 1 Apdo 22, 30740, San Pedro del Pinatar, Murcia, Spain
| | - Marta Coll
- Institut de Ciències del Mar (ICM-CSIC), Passeig Marítim de la Barceloneta, 37-49, 08003, Barcelona, Spain
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42
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Swift HF, Dawson MN. Demographic, Environmental, and Phenotypic Change but Genetic Consistency in the Jellyfish Mastigias papua. THE BIOLOGICAL BULLETIN 2020; 239:80-94. [PMID: 33151754 DOI: 10.1086/710663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
AbstractSpatiotemporal environmental change can produce phenotypic differences within and between populations. For scyphozoans, the effect of environmental variation on phenotype has been unclear because of multiple challenges, including difficulties delimiting populations. Marine lakes, bodies of seawater entirely surrounded by land, provide an opportunity to study discrete populations and capture responses to perturbations. We use this opportunity to compare Mastigias papua (Lesson, 1830) medusae before and after a demographic and environmental perturbation. We reconstructed mitochondrial DNA haplotype networks, measured morphological variation, and assessed swimming behavior of pre- and post-perturbation samples to evaluate two hypotheses about the source of variation: recolonization from an alternate location or endemic phenotypic variation. We found significant differences between samples in morphology (F > 9.5, P < 0.001) and in two of three behaviors (F > 8.45, P < 0.005) but no substantial genetic differentiation (ΦST = 0.03, P = 0.09). We reject the hypothesis of recolonization because pre- and post-perturbation lake medusae were genetically similar to each other and also significantly different from any potential source locations (ΦST > 0.48, P > 0.001). We could not distinguish the source of endemic variation; this will require genomic or experimental analyses. Increasing climatic variability emphasizes the need for understanding population-level responses to environmental change and how responses may be modified by sources of intraspecific variation.
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43
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Stabili L, Rizzo L, Basso L, Marzano M, Fosso B, Pesole G, Piraino S. The Microbial Community Associated with Rhizostoma pulmo: Ecological Significance and Potential Consequences for Marine Organisms and Human Health. Mar Drugs 2020; 18:md18090437. [PMID: 32839397 PMCID: PMC7551628 DOI: 10.3390/md18090437] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 08/12/2020] [Accepted: 08/18/2020] [Indexed: 01/02/2023] Open
Abstract
Jellyfish blooms are frequent and widespread in coastal areas worldwide, often associated with significant ecological and socio-economic consequences. Recent studies have also suggested cnidarian jellyfish may act as vectors of bacterial pathogens. The scyphomedusa Rhizostoma pulmo is an outbreak-forming jellyfish widely occurring across the Mediterranean basin. Using combination of culture-based approaches and a high-throughput amplicon sequencing (HTS), and based on available knowledge on a warm-affinity jellyfish-associated microbiome, we compared the microbial community associated with R. pulmo adult jellyfish in the Gulf of Taranto (Ionian Sea) between summer (July 2016) and winter (February 2017) sampling periods. The jellyfish-associated microbiota was investigated in three distinct compartments, namely umbrella, oral arms, and the mucus secretion. Actinobacteria, Bacteroidetes, Chlamydiae, Cyanobacteria, Deinococcus-Thermus, Firmicutes, Fusobacteria, Planctomycetes, Proteobacteria, Rhodothermaeota, Spirochaetes, Tenericutes, and Thaumarchaeota were the phyla isolated from all the three R. pulmo compartments in the sampling times. In particular, the main genera Mycoplasma and Spiroplasma, belonging to the class Mollicutes (phylum Tenericutes), have been identified in all the three jellyfish compartments. The taxonomic microbial data were coupled with metabolic profiles resulting from the utilization of 31 different carbon sources by the BIOLOG Eco-Plate system. Microorganisms associated with mucus are characterized by great diversity. The counts of culturable heterotrophic bacteria and potential metabolic activities are also remarkable. Results are discussed in terms of R. pulmo ecology, the potential health hazard for marine and human life as well as the potential biotechnological applications related to the associated microbiome.
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Affiliation(s)
- Loredana Stabili
- Department of Biological and Environmental Sciences and Technologies, University of Salento, Via Prov.le Lecce Monteroni, 73100 Lecce, Italy; (L.B.); (S.P.)
- Institute of Water Research of the National Research Council, S.S. di Taranto, Via Roma 3, 74123 Taranto, Italy
- Correspondence: (L.S.); (L.R.); (M.M.)
| | - Lucia Rizzo
- Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, Villa Comunale, 80121 Napoli, Italy
- Correspondence: (L.S.); (L.R.); (M.M.)
| | - Lorena Basso
- Department of Biological and Environmental Sciences and Technologies, University of Salento, Via Prov.le Lecce Monteroni, 73100 Lecce, Italy; (L.B.); (S.P.)
| | - Marinella Marzano
- Istituto di Biomembrane, Bioenergetica e Biotecnologie Molecolari (IBIOM), CNR, 70126 Bari, Italy; (B.F.); (G.P.)
- Correspondence: (L.S.); (L.R.); (M.M.)
| | - Bruno Fosso
- Istituto di Biomembrane, Bioenergetica e Biotecnologie Molecolari (IBIOM), CNR, 70126 Bari, Italy; (B.F.); (G.P.)
| | - Graziano Pesole
- Istituto di Biomembrane, Bioenergetica e Biotecnologie Molecolari (IBIOM), CNR, 70126 Bari, Italy; (B.F.); (G.P.)
- Dipartimento di Bioscienze, Biotecnologie e Biofarmaceutica, Università degli Studi di Bari “Aldo Moro”, 70121 Bari, Italy
| | - Stefano Piraino
- Department of Biological and Environmental Sciences and Technologies, University of Salento, Via Prov.le Lecce Monteroni, 73100 Lecce, Italy; (L.B.); (S.P.)
- CoNISMa, Piazzale Flaminio 9, 00196 Rome, Italy
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44
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Cavallo C, Chiaradia A, Deagle BE, Hays GC, Jarman S, McInnes JC, Ropert‐Coudert Y, Sánchez S, Reina RD. Quantifying prey availability using the foraging plasticity of a marine predator, the little penguin. Funct Ecol 2020. [DOI: 10.1111/1365-2435.13605] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Catherine Cavallo
- School of Biological Sciences Monash University Clayton VIC Australia
| | - André Chiaradia
- School of Biological Sciences Monash University Clayton VIC Australia
- Conservation Department Phillip Island Nature Parks Cowes VIC Australia
| | - Bruce E. Deagle
- Australian Antarctic Division Kingston TAS Australia
- CSIRO National Research Collections‐Australian National Fish Collection Hobart TAS Australia
| | - Graeme C. Hays
- Centre for Integrative Ecology School of Life and Environmental Sciences Deakin University Geelong VIC Australia
| | - Simon Jarman
- School of Biological Sciences University of Western Australia Perth WA Australia
| | - Julie C. McInnes
- Australian Antarctic Division Kingston TAS Australia
- Institute for Marine and Antarctic Studies University of Tasmania Hobart TAS Australia
| | - Yan Ropert‐Coudert
- Centre d'Etudes Biologiques de Chizé UMR7372 CNRSLa Rochelle Université Villiers‐en‐Bois France
| | - Sonia Sánchez
- School of Biological Sciences Monash University Clayton VIC Australia
| | - Richard D. Reina
- School of Biological Sciences Monash University Clayton VIC Australia
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45
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Probabilistic modeling to estimate jellyfish ecophysiological properties and size distributions. Sci Rep 2020; 10:6074. [PMID: 32269239 PMCID: PMC7142072 DOI: 10.1038/s41598-020-62357-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Accepted: 03/09/2020] [Indexed: 11/15/2022] Open
Abstract
While Ocean modeling has made significant advances over the last decade, its complex biological component is still oversimplified. In particular, modeling organisms in the ocean system must integrate parameters to fit both physiological and ecological behaviors that are together very difficult to determine. Such difficulty occurs for modeling Pelagia noctiluca. This jellyfish has a high abundance in the Mediterranean Sea and could contribute to several biogeochemical processes. However, gelatinous zooplanktons remain poorly represented in biogeochemical models because uncertainties about their ecophysiology limit our understanding of their potential role and impact. To overcome this issue, we propose, for the first time, the use of the Statistical Model Checking Engine (SMCE), a probability-based computational framework that considers a set of parameters as a whole. Contrary to standard parameter inference techniques, SMCE identifies sets of parameters that fit both laboratory-culturing observations and in situ patterns while considering uncertainties. Doing so, we estimated the best parameter sets of the ecophysiological model that represents the jellyfish growth and degrowth in laboratory conditions as well as its size. Behind this application, SMCE remains a computational framework that supports the projection of a model with uncertainties in broader contexts such as biogeochemical processes to drive future studies.
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46
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Goldstein J, Steiner UK. Ecological drivers of jellyfish blooms - The complex life history of a 'well-known' medusa (Aurelia aurita). J Anim Ecol 2020; 89:910-920. [PMID: 31782797 DOI: 10.1111/1365-2656.13147] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Accepted: 10/02/2019] [Indexed: 11/26/2022]
Abstract
Jellyfish blooms are conspicuous demographic events with significant ecological and socio-economic impact. Despite worldwide concern about an increased frequency and intensity of such mass occurrences, predicting their booms and busts remains challenging. Forecasting how jellyfish populations may respond to environmental change requires considering their complex life histories. Metagenic life cycles, which include a benthic polyp stage, can boost jellyfish mass occurrences via asexual recruitment of pelagic medusae. Here we present stage-structured matrix population models with monthly, individual-based demographic rates of all life stages of the moon jellyfish Aurelia aurita L. (sensu stricto). We investigate the life-stage dynamics of these complex populations under low and high food conditions to illustrate how changes in medusa density depend on non-medusa stage dynamics. We show that increased food availability can be an important ecological driver of jellyfish mass occurrences, as it can temporarily shift the population structure from polyp- to medusa-dominated. Projecting populations for a winter warming scenario additionally enhanced the booms and busts of jellyfish blooms. We identify demographic key variables that control the intensity and frequency of jellyfish blooms in response to environmental drivers such as habitat eutrophication and climate change. By contributing to an improved understanding of mass occurrence phenomena, our findings provide perspective for future management of ecosystem health.
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Affiliation(s)
- Josephine Goldstein
- Marine Biological Research Centre, University of Southern Denmark, Kerteminde, Denmark.,Department of Biology, University of Southern Denmark, Odense, Denmark
| | - Ulrich K Steiner
- Department of Biology, University of Southern Denmark, Odense, Denmark.,Center for Research and Interdisciplinarity, University of Paris, Paris, France
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47
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Zooplankton Community Response to Seasonal Hypoxia: A Test of Three Hypotheses. DIVERSITY 2020. [DOI: 10.3390/d12010021] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Several hypotheses of how zooplankton communities respond to coastal hypoxia have been put forward in the literature over the past few decades. We explored three of those that are focused on how zooplankton composition or biomass is affected by seasonal hypoxia using data collected over two summers in Hood Canal, a seasonally-hypoxic sub-basin of Puget Sound, Washington. We conducted hydrographic profiles and zooplankton net tows at four stations, from a region in the south that annually experiences moderate hypoxia to a region in the north where oxygen remains above hypoxic levels. The specific hypotheses tested were that low oxygen leads to: (1) increased dominance of gelatinous relative to crustacean zooplankton, (2) increased dominance of cyclopoid copepods relative to calanoid copepods, and (3) overall decreased zooplankton abundance and biomass at hypoxic sites compared to where oxygen levels are high. Additionally, we examined whether the temporal stability of community structure was decreased by hypoxia. We found evidence of a shift toward more gelatinous zooplankton and lower total zooplankton abundance and biomass at hypoxic sites, but no clear increase in the dominance of cyclopoid relative to calanoid copepods. We also found the lowest variance in community structure at the most hypoxic site, in contrast to our prediction. Hypoxia can fundamentally alter marine ecosystems, but the impacts differ among systems.
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48
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Killi N, Tarkan AS, Kozic S, Copp GH, Davison PI, Vilizzi L. Risk screening of the potential invasiveness of non-native jellyfishes in the Mediterranean Sea. MARINE POLLUTION BULLETIN 2020; 150:110728. [PMID: 31780090 DOI: 10.1016/j.marpolbul.2019.110728] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 11/05/2019] [Accepted: 11/07/2019] [Indexed: 06/10/2023]
Abstract
The aim of the present study was to risk screen 45 jellyfish species (30 hydromedusae, 14 scyphomedusae, one cubomedusa) for their potential invasiveness in the Mediterranean Sea to aid managers in making informed decisions on targeting appropriate species for management. Using the Aquatic Species Invasiveness Screening Kit (AS-ISK), calibrated basic and climate-change threshold assessment scores of 6.5 and 12.5, respectively, were identified for distinguishing reliably between species that pose 'low-to-medium' and 'high' risk of becoming invasive in the risk assessment area. Using these thresholds, 16 species were classified as high risk, 23 as medium risk and six as low risk under current climate conditions. Whereas, under future climate conditions, 13, 30 and two species, respectively, were classified as high, medium and low risk, respectively. Upside-down jellyfish Cassiopea andromeda, Australian spotted jellyfish Phyllorhiza punctata, sea nettle Chrysaora quinquecirrha and Rhopilema nomadica were the highest-scoring species, with the maximum increase in risk score under predicted climate change conditions being achieved by C. andromeda.
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Affiliation(s)
- Nurçin Killi
- Muğla Sıtkı Koçman University, Faculty of Fisheries, Department of Basic Sciences, 48000, Muğla, Turkey
| | - Ali Serhan Tarkan
- Muğla Sıtkı Koçman University, Faculty of Fisheries, Department of Basic Sciences, 48000, Muğla, Turkey; Department of Ecology and Vertebrate Zoology, Faculty of Biology and Environmental Protection, University of Łódź, Łódź, Poland.
| | - Sebastian Kozic
- Department of Ecology and Vertebrate Zoology, Faculty of Biology and Environmental Protection, University of Łódź, Łódź, Poland
| | - Gordon H Copp
- Department of Ecology and Vertebrate Zoology, Faculty of Biology and Environmental Protection, University of Łódź, Łódź, Poland; Centre for Environment Fisheries and Aquaculture Science, Lowestoft, UK; Centre for Environment and Sustainability, Bournemouth University, Poole, UK
| | - Phil I Davison
- Centre for Environment Fisheries and Aquaculture Science, Lowestoft, UK; Centre for Environment and Sustainability, Bournemouth University, Poole, UK
| | - Lorenzo Vilizzi
- Department of Ecology and Vertebrate Zoology, Faculty of Biology and Environmental Protection, University of Łódź, Łódź, Poland
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49
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Xiao W, Zeng Y, Liu X, Huang X, Chiang KP, Mi T, Zhang F, Li C, Wei H, Yao Q, Huang B. The impact of giant jellyfish Nemopilema nomurai blooms on plankton communities in a temperate marginal sea. MARINE POLLUTION BULLETIN 2019; 149:110507. [PMID: 31421568 DOI: 10.1016/j.marpolbul.2019.110507] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2019] [Revised: 08/04/2019] [Accepted: 08/06/2019] [Indexed: 06/10/2023]
Abstract
This study focused on the bloom-developing process of the giant jellyfish, Nemopilema nomurai, on phytoplankton and microzooplankton communities. Two repeated field observations on the jellyfish bloom were conducted in June 2012 and 2014 in the southern Yellow Sea where blooms of N. nomurai were frequently observed. We demonstrated that the bloom was made up of two stages, namely the developing stage and the mature stage. Total chlorophyll a increased and the concentrations of inorganic nutrients decreased during the developing stage, while both concentrations maintained stable and at low levels during the mature stage. Our analysis revealed that phosphate excreted by growing N. nomurai promoted the growth of phytoplankton at the developing stage. At the mature stage, size compositions of microzooplankton were altered and tended to be smaller via a top-down process, while phytoplankton compositions, affected mainly through a bottom-up process, shifted to be less diatoms and cryptophytes but more dinoflagellates.
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Affiliation(s)
- Wupeng Xiao
- State Key Laboratory of Marine Environmental Science, Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, College of the Environment and Ecology, Xiamen University, Xiamen, Fujian
| | - Yang Zeng
- State Key Laboratory of Marine Environmental Science, Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, College of the Environment and Ecology, Xiamen University, Xiamen, Fujian
| | - Xin Liu
- State Key Laboratory of Marine Environmental Science, Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, College of the Environment and Ecology, Xiamen University, Xiamen, Fujian.
| | - Xuguang Huang
- State Key Laboratory of Marine Environmental Science, Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, College of the Environment and Ecology, Xiamen University, Xiamen, Fujian; College of Chemistry and Environment, Minnan Normal University, Zhangzhou, Fujian
| | - Kuo-Ping Chiang
- Institute of Marine Environment and Ecology, National Taiwan Ocean University, 202-24 Keelung, Taiwan
| | - Tiezhu Mi
- College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, Shangdong
| | - Fang Zhang
- Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, Shangdong
| | - Chaolun Li
- Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, Shangdong
| | - Hao Wei
- School of Marine Science and Technology, Tianjin University, Tianjin
| | - Qingzhen Yao
- College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, Shangdong
| | - Bangqin Huang
- State Key Laboratory of Marine Environmental Science, Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, College of the Environment and Ecology, Xiamen University, Xiamen, Fujian
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50
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Marques R, Darnaude AM, Crochemore S, Bouvier C, Bonnet D. Molecular approach indicates consumption of jellyfish by commercially important fish species in a coastal Mediterranean lagoon. MARINE ENVIRONMENTAL RESEARCH 2019; 152:104787. [PMID: 31522875 DOI: 10.1016/j.marenvres.2019.104787] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 09/05/2019] [Accepted: 09/07/2019] [Indexed: 06/10/2023]
Abstract
Until recently, jellyfish have been ignored as an important source of food, due to their low nutritional value. Here, quantitative PCR was used to detect and quantify the DNA of the jellyfish Aurelia coerulea in the gut contents of commercially important fish species from the Thau Lagoon. Individuals from five fish species were collected during two different periods: the bloom period, when the pelagic stages of A. coerulea are abundant, and the post-bloom period, when only the benthic stage - polyps - is present in the lagoon. The DNA of A. coerulea was detected in the guts of 41.9% of the fish analysed, belonging to four different species. The eel Anguilla anguilla and the seabream Sparus aurata were important jellyfish consumers during the bloom and post-bloom periods, respectively. These results provide new insights on the potential control of jellyfish populations and on jellyfish importance as a food source for exploited fishes.
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Affiliation(s)
- Raquel Marques
- MARBEC, Univ Montpellier, CNRS, Ifremer, IRD, Montpellier, France.
| | | | | | - Corinne Bouvier
- MARBEC, Univ Montpellier, CNRS, Ifremer, IRD, Montpellier, France
| | - Delphine Bonnet
- MARBEC, Univ Montpellier, CNRS, Ifremer, IRD, Montpellier, France
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