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Aberle N, Volpe C, Østensen MA, Majaneva S. Long-term dynamics, population structure and connectivity of the helmet jellyfish Periphylla periphylla in a Norwegian fjord and adjacent waters. JOURNAL OF PLANKTON RESEARCH 2024; 46:59-71. [PMID: 38283690 PMCID: PMC10810686 DOI: 10.1093/plankt/fbad050] [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: 03/17/2023] [Accepted: 10/11/2023] [Indexed: 01/30/2024]
Abstract
Mass occurrences of Periphylla periphylla in Norwegian fjords cause major concerns related to potential regime shifts that could affect ecosystem stability. 15 years of trawl data (2006-2015), complemented with comprehensive sampling in different areas and seasons (2018-2021) allowed new insights on the dynamics, structure and connectivity of P. periphylla populations within and beyond Trondheimsfjorden. Despite assumed population bursts, no clear trend on P. periphylla population size in Trondheimsfjorden were identified. Sampling frequency and population size suggest a local reproduction of P. periphylla, especially in the inner part of the fjord where young-of-the-year (YOY) individuals occur. Size variations occurred in relation to sampling month, thus pointing at seasonal patterns in growth and reproduction. No distinct population structure of P. periphylla populations within Trondheimsfjorden and over larger spatial scales (> 100 km) along the Norwegian coast was observed. Such poor geographic population structure provides evidence for a strong dispersal of P. periphylla, potentially triggered by frequent deep-water renewals of the fjords' basins that enable a high gene flow. Data on P. periphylla long-term dynamics, population structure and connectivity provide valuable information for ecosystem state assessments and enable the advancement of ecosystem management approaches, thus accounting for both stakeholder and ecosystem demands.
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Affiliation(s)
- Nicole Aberle
- Trondhjem Biological Station, Department of Biology Norwegian University of Science and Technology (NTNU), Trondheim 7012, Norway
- Institute of Marine Ecosystem and Fishery Science (IMF), Hamburg University, Hamburg 20148, Germany
| | - Charlotte Volpe
- Trondhjem Biological Station, Department of Biology Norwegian University of Science and Technology (NTNU), Trondheim 7012, Norway
- Fisheries and New Biomarine Industry, SINTEF Ocean, Trondheim 7465, Norway
| | - Mari-Ann Østensen
- Trondhjem Biological Station, Department of Biology Norwegian University of Science and Technology (NTNU), Trondheim 7012, Norway
| | - Sanna Majaneva
- Trondhjem Biological Station, Department of Biology Norwegian University of Science and Technology (NTNU), Trondheim 7012, Norway
- Ecosystems, Akvaplan Niva, Trondheim 7010, Norway
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Laso-Jadart R, O'Malley M, Sykulski AM, Ambroise C, Madoui MA. Holistic view of the seascape dynamics and environment impact on macro-scale genetic connectivity of marine plankton populations. BMC Ecol Evol 2023; 23:46. [PMID: 37658324 PMCID: PMC10472650 DOI: 10.1186/s12862-023-02160-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Accepted: 08/23/2023] [Indexed: 09/03/2023] Open
Abstract
BACKGROUND Plankton seascape genomics studies have revealed different trends from large-scale weak differentiation to microscale structures. Previous studies have underlined the influence of the environment and seascape on species differentiation and adaptation. However, these studies have generally focused on a few single species, sparse molecular markers, or local scales. Here, we investigated the genomic differentiation of plankton at the macro-scale in a holistic approach using Tara Oceans metagenomic data together with a reference-free computational method. RESULTS We reconstructed the FST-based genomic differentiation of 113 marine planktonic taxa occurring in the North and South Atlantic Oceans, Southern Ocean, and Mediterranean Sea. These taxa belong to various taxonomic clades spanning Metazoa, Chromista, Chlorophyta, Bacteria, and viruses. Globally, population genetic connectivity was significantly higher within oceanic basins and lower in bacteria and unicellular eukaryotes than in zooplankton. Using mixed linear models, we tested six abiotic factors influencing connectivity, including Lagrangian travel time, as proxies of oceanic current effects. We found that oceanic currents were the main population genetic connectivity drivers, together with temperature and salinity. Finally, we classified the 113 taxa into parameter-driven groups and showed that plankton taxa belonging to the same taxonomic rank such as phylum, class or order presented genomic differentiation driven by different environmental factors. CONCLUSION Our results validate the isolation-by-current hypothesis for a non-negligible proportion of taxa and highlight the role of other physicochemical parameters in large-scale plankton genetic connectivity. The reference-free approach used in this study offers a new systematic framework to analyse the population genomics of non-model and undocumented marine organisms from a large-scale and holistic point of view.
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Affiliation(s)
- Romuald Laso-Jadart
- Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRS, Univ Evry, Université Paris-Saclay, Evry, France
- Research Federation for the Study of Global Ocean Systems Ecology and Evolution, FR2022/Tara Oceans GO-SEE, 3 rue Michel-Ange, Paris, France
| | - Michael O'Malley
- STOR-i Centre for Doctoral Training/Department of Mathematics and Statistics, Lancaster University, Lancaster, UK
| | - Adam M Sykulski
- STOR-i Centre for Doctoral Training/Department of Mathematics and Statistics, Lancaster University, Lancaster, UK
| | | | - Mohammed-Amin Madoui
- Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRS, Univ Evry, Université Paris-Saclay, Evry, France.
- Research Federation for the Study of Global Ocean Systems Ecology and Evolution, FR2022/Tara Oceans GO-SEE, 3 rue Michel-Ange, Paris, France.
- Service d'Etude des Prions et des Infections Atypiques (SEPIA), Institut François Jacob, Commissariat à l'Energie Atomique et aux Energies Alternatives (CEA), Université Paris Saclay, Fontenay-Aux-Roses, France.
- Équipe Écologie Évolutive, UMR CNRS 6282 BioGéoSciences, Université de Bourgogne Franche-Comté, 21000, Dijon, France.
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Chau VQ, Kolb AW, Miller DL, Yannuzzi NA, Brandt CR. Phylogenetic and Genomic Characterization of Whole Genome Sequences of Ocular Herpes Simplex Virus Type 1 Isolates Identifies Possible Virulence Determinants in Humans. Invest Ophthalmol Vis Sci 2023; 64:16. [PMID: 37450309 DOI: 10.1167/iovs.64.10.16] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/18/2023] Open
Abstract
Purpose There are limited data on the prevalence and genetic diversity of herpes simplex virus type 1 (HSV-1) virulence genes in ocular isolates. Here, we sequenced 36 HSV-1 ocular isolates, collected by the Bascom Palmer Eye Institute, a university-based eye hospital, from three different ocular anatomical sites (conjunctiva, cornea, and eyelid) and carried out a genomic and phylogenetic analyses. Methods The PacBio Sequel II long read platform was used for genome sequencing. Phylogenetic analysis and genomic analysis were performed to help better understand genetic variability among common virulence genes in ocular herpetic disease. Results A phylogenetic network generated using the genome sequences of the 36 Bascom Palmer ocular isolates, plus 174 additional strains showed that ocular isolates do not group together phylogenetically. Analysis of the thymidine kinase and DNA polymerase protein sequences from the Bascom Palmer isolates showed multiple novel single nucleotide polymorphisms, but only one, BP-K14 encoded a known thymidine kinase acyclovir resistance mutation. An analysis of the multiple sequence alignment comprising the 51 total ocular isolates versus 159 nonocular strains detected several possible single nucleotide polymorphisms in HSV-1 genes that were found significantly more often in the ocular isolates. These genes included UL6, gM, VP19c, VHS, gC, VP11/12, and gG. Conclusions There does not seem to be a specific genetic feature of viruses causing ocular infection. The identification of novel and common recurrent polymorphisms may help to understand the drivers of herpetic pathogenicity and specific factors that may influence the virulence of ocular disease.
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Affiliation(s)
- Viet Q Chau
- Bascom Palmer Eye Institute, University of Miami, Miami, Florida, United States
| | - Aaron W Kolb
- Department of Ophthalmology and Visual Sciences, School of Medicine and Public Health, University of Wisconsin-Madison, Wisconsin, United States
| | - Darlene L Miller
- Bascom Palmer Eye Institute, University of Miami, Miami, Florida, United States
| | - Nicolas A Yannuzzi
- Bascom Palmer Eye Institute, University of Miami, Miami, Florida, United States
| | - Curtis R Brandt
- Department of Ophthalmology and Visual Sciences, School of Medicine and Public Health, University of Wisconsin-Madison, Wisconsin, United States
- McPherson Eye Research Institute, University of Wisconsin-Madison, Wisconsin, United States
- Department of Medical Microbiology and Immunology, School of Medicine and Public Health, University of Wisconsin-Madison, Wisconsin, United States
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Ramirez-Romero E, Amores A, Diaz D, Muñoz A, Catalan IA, Molinero JC, Ospina-Alvarez A. Atmospheric-ocean coupling drives prevailing and synchronic dispersal patterns of marine species with long pelagic durations. Sci Rep 2023; 13:2366. [PMID: 36759543 PMCID: PMC9911598 DOI: 10.1038/s41598-023-29543-7] [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: 09/30/2022] [Accepted: 02/06/2023] [Indexed: 02/11/2023] Open
Abstract
Dispersal shapes population connectivity and plays a critical role in marine metacommunities. Prominent species for coastal socioecological systems, such as jellyfish and spiny lobsters, feature long pelagic dispersal phases (LPDPs), which have long been overlooked. Here, we use a cross-scale approach combining field surveys of these species with a high-resolution hydrodynamic model to decipher the underlying mechanisms of LPDP patterns in northwestern Mediterranean shores. We identified basin-scale prevailing dispersal routes and synchronic year-to-year patterns tightly linked to prominent circulation features typical of marginal seas and semienclosed basins, with an outstanding role of a retentive source area replenishing shores and potentially acting as a pelagic nursery area. We show how the atmospheric forcing of the ocean, a marked hydrological driver of the Mediterranean Sea, modulates dispersal routes and sources of LPDP at interannual scales. These findings represent a crucial advance in our understanding of the functioning of metapopulations of species with LPDP in marginal seas and may contribute to the effective management of coastal ecosystem services in the face of climate change.
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Affiliation(s)
- Eduardo Ramirez-Romero
- Instituto de Ciencias Marinas de Andalucía, ICMAN, CSIC, República Saharaui, 4, Puerto Real, 11519, Cádiz, Spain
| | - Angel Amores
- Department of Physics, University of the Balearic Islands, Crta. Valldemossa, km 7.5, 07122, Palma, Illes Balears, Spain
| | - David Diaz
- Instituto Español de Oceanografía, IEO, CSIC, Centre Oceanogràfic de les Balears, Moll de Ponent sn, 07015, Palma, Illes Balears, Spain
| | - Anabel Muñoz
- Instituto Español de Oceanografía, IEO, CSIC, Centre Oceanogràfic de les Balears, Moll de Ponent sn, 07015, Palma, Illes Balears, Spain
| | - Ignacio A Catalan
- Mediterranean Institute for Advanced Studies, IMEDEA, CSIC-UIB, Miquel Marquès, 21, 07190, Esporles, Illes Balears, Spain
| | - Juan Carlos Molinero
- Marine Biodiversity Exploitation and Conservation, MARBEC, IRD, CNRS, Ifremer, Université de Montpellier, 610101, Sète, France
| | - Andres Ospina-Alvarez
- Mediterranean Institute for Advanced Studies, IMEDEA, CSIC-UIB, Miquel Marquès, 21, 07190, Esporles, Illes Balears, Spain.
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Assessment of Genetic Diversity of the Salangid, Neosalanx taihuensis, Based on the Mitochondrial COI Gene in Different Chinese River Basins. BIOLOGY 2022; 11:biology11070968. [PMID: 36101349 PMCID: PMC9311889 DOI: 10.3390/biology11070968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 06/22/2022] [Accepted: 06/24/2022] [Indexed: 12/08/2022]
Abstract
Simple Summary In the current study, we estimate the genetic diversity of the salangid Neosalanxtaihuensis sampled from 11 populations in the six typical river basins of China. Using the COI gene sequencing technology, the N. taihuensis population’s genetic difference within and between river basins was investigated. Significant levels of genetic subdivision were detected among populations within basins rather than between basins. Population history dynamics showed that N. taihuensis populations experienced a population expansion during the glacial period in the late Pleistocene. These results suggest that different populations should be considered as different management units to achieve effective conservation and management purposes. Abstract The salangid Neosalanx taihuensis (Salangidae) is a commercially important economical fish endemic to China and restricted to large freshwater systems with a wide-ranging distribution. This fish species has continuous distribution ranges and a long-introduced aquaculture history in Chinese basins. However, the research on its population genetic differentiation within and between basins is very limited. In this regard, 197 individuals were sampled from 11 populations in the Nenjiang River Basin (A1–A4), Songhua River Basin (B1), Yellow River Basin (C1–C2), Yangtze River Basin (D1), Lanchang River Basin (E1–E2) and Huaihe River Basin (F1). Based on the COI sequence, the N.taihuensis population’s genetic difference within and between river basins was investigated. The haplotypes and their frequency distributions were strongly skewed, with most haplotypes (n = 13) represented only in single samples each and thus restricted to a single population. The most common haplotype (H4, 67/197) was found in all individuals. The analysis of molecular variance (AMOVA) revealed a random pattern in the distribution of genetic diversity, which is inconsistent with contemporary hydrological structure. The mismatch between the distribution and neutrality tests supported the evidence of a population expansion, which occurred during the late Pleistocene (0.041–0.051 million years ago). Significant levels of genetic subdivision were detected among populations within basins rather than between the six basins. Population history dynamics showed that N. taihuensis experienced an expansion during the glacial period in the late Pleistocene. Therefore, different populations should be considered as different management units to achieve effective conservation and management purposes. These results have great significance for the evaluation and exploitation of the germplasm resources of N. taihuensis.
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Population Genetic Structures of the Jellyfish Aurelia coerulea Polyps along Korean Coasts and Implications as Revealed by Mitochondrial COI. Zool Stud 2022; 60:e63. [PMID: 35665083 DOI: 10.6620/zs.2021.60-63] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 07/20/2021] [Indexed: 11/18/2022]
Abstract
The moon jellyfish, Aurelia coerulea, is is globally distributed, and its blooms have been responsible for severe environmental impacts. Benthic polyp populations are important for forming and maintaining medusa populations; however, their genetic structures are mostly unknown. Here, we analysed the genetic structure and phylogeographic pattern of A. coerulea polyps using the mitochondrial COI of 229 specimens collected from four different coastal regions of Korea. Molecular discrimination by COI assigned all polyps to A. coruelea. Population genetics revealed 53 haplotypes with high diversity and significant genetic structure, distinguishing two haplogroups (A and B) that coexist in all regions. Haplogroup A exhibited a star-like haplotype network pattern, while haplogroup B demonstrated a branched haplotype network pattern. Our results suggest that, the two haplogroups detected have existed in sympatry along Korean coasts. However, haplogroup A may have been established by a recent population expansion, while haplogroup B may have been established a long time ago. The strong genetic structure found within the polyp population of A. coerulea may have an effect on the moon jellyfish blooms on Korean coasts.
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Gamero-Mora E, Collins AG, Boco SR, Geson SM, Morandini AC. Revealing hidden diversity among upside-down jellyfishes (Cnidaria: Scyphozoa: Rhizostomeae:. INVERTEBR SYST 2022. [DOI: 10.1071/is21002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Morphological variability within Cassiopea is well documented and has led to inaccuracies in the establishment of species boundaries in this taxon. Cassiopea medusae specimens from the Western Pacific (Japan and the Philippines) were analysed using multiple lines of complementary evidence, including types of cnidae, macro-morphology and molecular data. These observations lead to the recognition of two distinct species: Cassiopea mayeri, sp. nov. and a previously synonymised variety now raised to species level (Cassiopea culionensis, stat. nov.). These species can be distinguished from each other using morphological features. Herein, sexually dimorphic traits are included for the first time in the descriptions of Cassiopea species. Nematocyst types not previously observed in the genus are also reported. Molecular analyses, based on individual and combined markers (16S + cytochrome c oxidase I, COI), also support two distinct species; they are not sister taxa, and both are nested together within a clade of other Cassiopea members from the Australian and Indo-Pacific regions. Species richness is underestimated in the Western Pacific region, and integrative approaches are helpful to reveal and describe species. The systematics of Cassiopea is far from completely understood, but the present study represents an important further step. http://www.zoobank.org/References/B1A66787-009D-4465-954A-412C6878FCB4.
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Gwak WS, Roy A. Genetic Diversity and Variation in Mitochondrial COI Gene in Wild and Hatchery Populations of Saxidomus purpuratus. Biochem Genet 2021; 60:969-986. [PMID: 34611791 DOI: 10.1007/s10528-021-10137-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Accepted: 09/23/2021] [Indexed: 11/25/2022]
Abstract
To investigate the genetic diversity and genetic variations of four wild (Geoje, Jinhae, Yeosu, and Boryeong) and two hatchery (Goheung and Geoje) populations of purplish Washington clam (Saxidomus purpuratus), 421 bp sequences of the mitochondrial cytochrome c oxidase subunit I (COI) gene were analyzed. A total of 149 haplotypes were identified from 358 individuals from the four wild and two hatchery populations with 109 substitutions. The genetic diversity of the wild populations and Geoje hatchery population were high, whereas the total number of haplotypes, population-specific haplotypes, and haplotype diversity were comparatively low in the Goheung hatchery population. The fixation index (FST) indicated that there was no significant genetic difference between the four wild populations. However, the Goheung hatchery population was significantly different from that of the Geoje hatchery, exhibiting the most pronounced difference, and two wild populations (Jinhae and Yeosu). The low genetic diversity indices exhibited by the Goheung hatchery population might have resulted from farm propagation using a limited parental stock. Therefore, to maintain genetic diversity, a proper breeding management program using more progenitors is required in hatcheries, in addition to regular monitoring of both hatchery and wild populations.
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Affiliation(s)
- Woo-Seok Gwak
- Marine Bio-Education and Research Center, Gyeongsang National University, Tongyeong, 53064, Korea.
- Marine Bio-Education and Research Center, Gyeongsang National University, Tongyeong, 53064, Korea.
| | - Animesh Roy
- Marine Bio-Education and Research Center, Gyeongsang National University, Tongyeong, 53064, Korea
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Mizrahi GA, Shemesh E, Mizrachi A, Tchernov D. Comparative genetics of scyphozoan species reveals the geological history and contemporary processes of the Mediterranean Sea. Ecol Evol 2021; 11:10303-10319. [PMID: 34367576 PMCID: PMC8328420 DOI: 10.1002/ece3.7834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 06/05/2021] [Accepted: 06/07/2021] [Indexed: 11/08/2022] Open
Abstract
Jellyfish are useful genetic indicators for aquatic ecosystems as they have limited mobility and are highly exposed to the water column. By using comparative genomics and the molecular clock (timetree) of Rhizostoma pulmo, we revealed a divergence point between the East and West Mediterranean Sea (MS) populations that occurred 4.59 million years ago (mya). It is suggested that the two distinct ecological environments we know today were formed at this time. We propose that before this divergence, the highly mixed Atlantic and Mediterranean waters led to the wide dispersal of different species including R. pulmo. At 4.59 mya, the Western and Eastern MS were formed, indicating the possibility of a dramatic environmental event. For the first time, we find that for the jellyfish we examined, the division of the MS in east and west is not at the Straits of Sicily as generally thought, but significantly to the east. Using genomics of the Aurelia species, we examined contemporary anthropogenic impacts with a focus on migration of scyphozoa across the Suez Canal (Lessepsian migration). Aurelia sp. is among the few scyphozoa we find in both the MS and the Red Sea, but our DNA analysis revealed that the Red Sea Aurelia sp. did not migrate or mix with MS species. Phyllorhiza punctata results showed that this species was only recently introduced to the MS as a result of anthropogenic transportation activity, such as ballast water discharge, and revealed a migration vector from Australia to the MS. Our findings demonstrate that jellyfish genomes can be used as a phylogeographic molecular tool to trace past events across large temporal scales and reveal invasive species introduction due to human activity.
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Affiliation(s)
- Gur A. Mizrahi
- Department of Marine BiologyThe Leon H. Charney School of Marine SciencesUniversity of HaifaHaifaIsrael
- Morris Kahn Marine Research StationEnvironmental Geochemistry Lab.Leon H. Charney School of Marine SciencesHaifa UniversityHaifaIsrael
| | - Eli Shemesh
- Department of Marine BiologyThe Leon H. Charney School of Marine SciencesUniversity of HaifaHaifaIsrael
- Morris Kahn Marine Research StationEnvironmental Geochemistry Lab.Leon H. Charney School of Marine SciencesHaifa UniversityHaifaIsrael
| | - Avia Mizrachi
- Plant and Environmental Sciences DepartmentWeizmann Institute of ScienceRehovotIsrael
| | - Dan Tchernov
- Department of Marine BiologyThe Leon H. Charney School of Marine SciencesUniversity of HaifaHaifaIsrael
- Morris Kahn Marine Research StationEnvironmental Geochemistry Lab.Leon H. Charney School of Marine SciencesHaifa UniversityHaifaIsrael
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Scyphomedusae and Ctenophora of the Eastern Adriatic: Historical Overview and New Data. DIVERSITY 2021. [DOI: 10.3390/d13050186] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
One of the obstacles to detecting regional trends in jellyfish populations is the lack of a defined baseline. In the Adriatic Sea, the jellyfish fauna (Scyphozoa and Ctenophora) is poorly studied compared to other taxa. Therefore, our goal was to collect and systematize all available data and provide a baseline for future studies. Here we present phenological data and relative abundances of jellyfish based on 2010–2019 scientific surveys and a “citizen science” sighting program along the eastern Adriatic. Inter-annual variability, seasonality and spatial distribution patterns of Scyphomedusae and Ctenophore species were described and compared with existing historical literature. Mass occurrences with a clear seasonal pattern and related to the geographical location were observed for meroplanktonic Scyphomedusae Aurelia solida, Rhizostoma pulmo, and to a lesser extent Chrysaora hysoscella, Cotylorhiza tuberculata and Discomedusa lobata. Holoplanktonic Pelagia noctiluca also formed large aggregations, which were seasonally less predictable and restricted to the central and southern Adriatic. Four species of Ctenophora produced blooms limited to a few areas: Bolinopsis vitrea, Leucothea multicornis, Cestum veneris and the non-native Mnemiopsis leidyi. However, differences between Adriatic subregions have become less pronounced since 2014. Our results suggest that gelatinous organisms are assuming an increasingly important role in the Adriatic ecosystem, which may alter the balance of the food web and lead to harmful and undesirable effects.
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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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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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Chuard PJC, Johnson MD, Guichard F. Ocean acidification causes mortality in the medusa stage of the cubozoan Carybdea xaymacana. Sci Rep 2019; 9:5622. [PMID: 30948764 PMCID: PMC6449339 DOI: 10.1038/s41598-019-42121-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Accepted: 03/25/2019] [Indexed: 11/28/2022] Open
Abstract
Ocean pH is decreasing due to anthropogenic activities, and the consequences of this acidification on marine fauna and ecosystems are the subject of an increasing number of studies. Yet, the impact of ocean acidification (OA) on several abundant and ecologically important taxa, such as medusozoans, is poorly documented. To date there have been no studies on the effect of post-2050 OA projections on the medusa stage of jellyfish. As medusae represent the reproductive stage of cnidarians, negative impacts on adult jellyfish could severely impact the long-term survival of this group. Using a laboratory experiment, we investigated the effect of 2300 OA projections (i.e. pH of 7.5) on the mortality rate of the medusa-stage of the cubozoan species Carybdea xaymacana, compared to ambient seawater pH conditions (i.e. pH of 8.1). After a 12-h exposure to OA, C. xaymacana medusae suffered higher mortality rates compared to ambient conditions. This study represents the first evidence of the potential lethal effects of post-2050 OA projections on jellyfish. The higher metabolic rates of cubozoans compared to other cnidarians might make box jellyfish more vulnerable to OA. A decrease in the density of cnidarians could lead to harmful ecological events, such as algal blooms.
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Affiliation(s)
- Pierre J C Chuard
- Department of Biological Sciences, Bishop's University, Sherbrooke, QC, J1M 1Z7, Canada.
| | | | - Frédéric Guichard
- Department of Biology, McGill University, Montreal, QC, H3A 1B1, Canada
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Kordbacheh A, Wallace RL, Walsh EJ. Evidence supporting cryptic species within two sessile microinvertebrates, Limnias melicerta and L. ceratophylli (Rotifera, Gnesiotrocha). PLoS One 2018; 13:e0205203. [PMID: 30379825 PMCID: PMC6209156 DOI: 10.1371/journal.pone.0205203] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Accepted: 09/20/2018] [Indexed: 11/25/2022] Open
Abstract
Microorganisms, including rotifers, are thought to be capable of long distance dispersal. Therefore, they should show little population genetic structure due to high gene flow. Nevertheless, substantial genetic structure has been reported among populations of many taxa. In rotifers, genetic studies have focused on planktonic taxa leaving sessile groups largely unexplored. Here, we used COI gene and ITS region sequences to study genetic structure and delimit cryptic species in two sessile species (Limnias melicerta [32 populations]; L. ceratophylli [21 populations]). Among populations, ITS region sequences were less variable as compared to those of the COI gene (ITS; L. melicerta: 0-3.1% and L. ceratophylli: 0-4.4%; COI; L. melicerta: 0-22.7% and L. ceratophylli: 0-21.7%). Moreover, L. melicerta and L. ceratophylli were not resolved in phylogenetic analyses based on ITS sequences. Thus, we used COI sequences for species delimitation. Bayesian Species Delimitation detected nine putative cryptic species within L. melicerta and four putative cryptic species for L. ceratophylli. The genetic distance in the COI gene was 0-15.4% within cryptic species of L. melicerta and 0.5-0.6% within cryptic species of L. ceratophylli. Among cryptic species, COI genetic distance ranged 8.1-21.9% for L. melicerta and 15.1-21.2% for L. ceratophylli. The correlation between geographic and genetic distance was weak or lacking; thus geographic isolation cannot be considered a strong driver of genetic variation. In addition, geometric morphometric analyses of trophi did not show significant variation among cryptic species. In this study we used a conservative approach for species delimitation, yet we were able to show that species diversity in these sessile rotifers is underestimated.
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Affiliation(s)
- Azar Kordbacheh
- Department of Biological Sciences, University of Texas at El Paso, El Paso, Texas, United States of America
| | - Robert L. Wallace
- Department of Biology, Ripon College, Ripon, Wisconsin, United States of America
| | - Elizabeth J. Walsh
- Department of Biological Sciences, University of Texas at El Paso, El Paso, Texas, United States of America
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16
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Mitochondrial DNA variation and population genetic structure in the small yellow croaker at the coast of Yellow Sea and East China Sea. BIOCHEM SYST ECOL 2017. [DOI: 10.1016/j.bse.2017.03.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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17
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Frazão B, Campos A, Osório H, Thomas B, Leandro S, Teixeira A, Vasconcelos V, Antunes A. Analysis of Pelagia noctiluca proteome Reveals a Red Fluorescent Protein, a Zinc Metalloproteinase and a Peroxiredoxin. Protein J 2017; 36:77-97. [PMID: 28258523 DOI: 10.1007/s10930-017-9695-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Pelagia noctiluca is the most venomous jellyfish in the Mediterranean Sea where it forms dense blooms. Although there is several published research on this species, until now none of the works has been focused on a complete protein profile of the all body constituents of this organism. Here, we have performed a detailed proteomics characterization of the major protein components expressed by P. noctiluca. With that aim, we have considered the study of jellyfish proteins involved in defense, body constituents and metabolism, and furthered explore the significance and potential application of such bioactive molecules. P. noctiluca body proteins were separated by1D SDS-PAGE and 2DE followed by characterization by nanoLC-MS/MS and MALDI-TOF/TOF techniques. Altogether, both methods revealed 68 different proteins, including a Zinc Metalloproteinase, a Red Fluorescent Protein (RFP) and a Peroxiredoxin. These three proteins were identified for the first time in P. noctiluca. Zinc Metalloproteinase was previously reported in the venom of other jellyfish species. Besides the proteins described above, the other 65 proteins found in P. noctiluca body content were identified and associated with its clinical significance. Among all the proteins identified in this work we highlight: Zinc metalloproteinase, which has a ShK toxin domain and therefore should be implicated in the sting toxicity of P. noctiluca.; the RFP which are a very important family of proteins due to its possible application as molecular markers; and last but not least the discovery of a Peroxiredoxin in this organism makes it a new natural resource of antioxidant and anti-UV radiation agents.
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Affiliation(s)
- Bárbara Frazão
- CIIMAR/CIMAR, Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos, s/n, 4450-208, Porto, Portugal
- Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre, 4169-007, Porto, Portugal
| | - Alexandre Campos
- CIIMAR/CIMAR, Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos, s/n, 4450-208, Porto, Portugal
| | - Hugo Osório
- IPATIMUP, Institute of Molecular Pathology and Immunology of the University of Porto, Porto, Portugal
- Faculty of Medicine of the University of Porto, Porto, Portugal
| | - Benjamin Thomas
- Proteomics Facility, Sir William Dunn School of Pathology, University of Oxford, Oxford, UK
| | - Sérgio Leandro
- MARE - Marine and Environmental Sciences Centre, ESTM, Polytechnic Institute of Leiria, 2520-641, Peniche, Portugal
| | - Alexandre Teixeira
- Department of Human Genetics, National Health Institute Dr. Ricardo Jorge, 1649-016, Lisbon, Portugal
- Department of Genetics, Faculty of Medical Sciences, Human Molecular Genetics Research Center (CIGMH), Universidade Nova de Lisboa, 1349-008, Lisbon, Portugal
| | - Vitor Vasconcelos
- CIIMAR/CIMAR, Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos, s/n, 4450-208, Porto, Portugal
- Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre, 4169-007, Porto, Portugal
| | - Agostinho Antunes
- CIIMAR/CIMAR, Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos, s/n, 4450-208, Porto, Portugal.
- Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre, 4169-007, Porto, Portugal.
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Lah L, Trense D, Benke H, Berggren P, Gunnlaugsson Þ, Lockyer C, Öztürk A, Öztürk B, Pawliczka I, Roos A, Siebert U, Skóra K, Víkingsson G, Tiedemann R. Spatially Explicit Analysis of Genome-Wide SNPs Detects Subtle Population Structure in a Mobile Marine Mammal, the Harbor Porpoise. PLoS One 2016; 11:e0162792. [PMID: 27783621 PMCID: PMC5082642 DOI: 10.1371/journal.pone.0162792] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Accepted: 08/29/2016] [Indexed: 02/07/2023] Open
Abstract
The population structure of the highly mobile marine mammal, the harbor porpoise (Phocoena phocoena), in the Atlantic shelf waters follows a pattern of significant isolation-by-distance. The population structure of harbor porpoises from the Baltic Sea, which is connected with the North Sea through a series of basins separated by shallow underwater ridges, however, is more complex. Here, we investigated the population differentiation of harbor porpoises in European Seas with a special focus on the Baltic Sea and adjacent waters, using a population genomics approach. We used 2872 single nucleotide polymorphisms (SNPs), derived from double digest restriction-site associated DNA sequencing (ddRAD-seq), as well as 13 microsatellite loci and mitochondrial haplotypes for the same set of individuals. Spatial principal components analysis (sPCA), and Bayesian clustering on a subset of SNPs suggest three main groupings at the level of all studied regions: the Black Sea, the North Atlantic, and the Baltic Sea. Furthermore, we observed a distinct separation of the North Sea harbor porpoises from the Baltic Sea populations, and identified splits between porpoise populations within the Baltic Sea. We observed a notable distinction between the Belt Sea and the Inner Baltic Sea sub-regions. Improved delineation of harbor porpoise population assignments for the Baltic based on genomic evidence is important for conservation management of this endangered cetacean in threatened habitats, particularly in the Baltic Sea proper. In addition, we show that SNPs outperform microsatellite markers and demonstrate the utility of RAD-tags from a relatively small, opportunistically sampled cetacean sample set for population diversity and divergence analysis.
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Affiliation(s)
- Ljerka Lah
- Unit of Evolutionary Biology/Systematic Zoology, Institute of Biochemistry and Biology, University of Potsdam, Potsdam, Germany
| | - Daronja Trense
- Unit of Evolutionary Biology/Systematic Zoology, Institute of Biochemistry and Biology, University of Potsdam, Potsdam, Germany
| | | | - Per Berggren
- Dove Marine Laboratory, School of Marine Science and Technology, Newcastle University, Cullercoats, North Shields, United Kingdom
| | | | | | - Ayaka Öztürk
- Marine Biology Department, Faculty of Fisheries, Istanbul University, Istanbul, Turkey
| | - Bayram Öztürk
- Marine Biology Department, Faculty of Fisheries, Istanbul University, Istanbul, Turkey
| | | | - Anna Roos
- Swedish Museum of Natural History, Stockholm, Sweden
| | - Ursula Siebert
- Institute for Terrestrial and Aquatic Wildlife Research (ITAW), University of Veterinary Medicine Hannover Foundation, Büsum, Germany
| | | | | | - Ralph Tiedemann
- Unit of Evolutionary Biology/Systematic Zoology, Institute of Biochemistry and Biology, University of Potsdam, Potsdam, Germany
- * E-mail:
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van Walraven L, Driessen F, van Bleijswijk J, Bol A, Luttikhuizen PC, Coolen JWP, Bos OG, Gittenberger A, Schrieken N, Langenberg VT, van der Veer HW. Where are the polyps? Molecular identification, distribution and population differentiation of Aurelia aurita jellyfish polyps in the southern North Sea area. MARINE BIOLOGY 2016; 163:172. [PMID: 27478251 PMCID: PMC4949292 DOI: 10.1007/s00227-016-2945-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Accepted: 06/26/2016] [Indexed: 06/06/2023]
Abstract
For many species of metagenic jellyfish the location of the benthic polyps is unknown. To gain insight in the distribution, species composition and population structure of scyphozoan jellyfish polyps in the southern North Sea area, polyp samples were collected from natural and artificial substrates (settling plates, marina floats and wrecks) at ten inshore locations in the Netherlands, seven offshore locations in the North Sea and in the Gullmar Fjord in Sweden. Polyps were identified to species level by sequencing both a fragment of 18S rDNA and a fragment of mitochondrial COI, and comparing these sequences to reference sequences available in GenBank and to newly obtained sequences from medusae collected in the area. All polyps sequenced did belong to Aurelia aurita. For this species, molecular diversity in mitochondrial COI was high, with 50 haplotypes among 183 polyps. Population differentiation was detected between the Dogger Bank and other-more coastal-locations, indicating extremely low connectivity. No significant differences were found between coastal samples. The location of polyps of Cyanea capillata, Cyanea lamarckii, Chrysaora hysoscella and Rhizostoma octopus in the study area remains unresolved.
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Affiliation(s)
- Lodewijk van Walraven
- Department of Coastal Systems and Utrecht University, NIOZ Royal Netherlands Institute for Sea Research, PO Box 59, 1790 AB Den Burg, Texel, The Netherlands
| | - Floor Driessen
- Department of Coastal Systems and Utrecht University, NIOZ Royal Netherlands Institute for Sea Research, PO Box 59, 1790 AB Den Burg, Texel, The Netherlands
| | - Judith van Bleijswijk
- Department of Marine Microbiology, NIOZ Royal Netherlands Institute for Sea Research, PO Box 59, 1790 AB Den Burg, Texel, The Netherlands
| | - Anneke Bol
- Department of Coastal Systems and Utrecht University, NIOZ Royal Netherlands Institute for Sea Research, PO Box 59, 1790 AB Den Burg, Texel, The Netherlands
| | - Pieternella C. Luttikhuizen
- Department of Coastal Systems and Utrecht University, NIOZ Royal Netherlands Institute for Sea Research, PO Box 59, 1790 AB Den Burg, Texel, The Netherlands
| | - Joop W. P. Coolen
- Department of Ecosystems, IMARES Wageningen UR – Institute for Marine Resource and Ecosystem Studies, PO Box 167, 1790 AD Den Burg, The Netherlands
- Chair group Aquatic Ecology and Water Quality Management, Wageningen UR, Droevendaalsesteeg 3a, 6708 PD Wageningen, The Netherlands
| | - Oscar G. Bos
- Department of Ecosystems, IMARES Wageningen UR – Institute for Marine Resource and Ecosystem Studies, PO Box 167, 1790 AD Den Burg, The Netherlands
| | - Adriaan Gittenberger
- GiMaRIS, J.H. Oortweg 21, 2333 CH Leiden, The Netherlands
- Institute of Biology Leiden (IBL), Leiden University, P.O. Box 9516, 2300 RA Leiden, The Netherlands
- Department of Marine Zoology, Naturalis Biodiversity Center, P.O. Box 9517, 2300 RA Leiden, The Netherlands
| | - Niels Schrieken
- BiOrganized, Grenadiersweg 8, 3902 JC Veenendaal, The Netherlands
- ANEMOON Foundation, P.O. Box 29, 2120 AA Bennebroek, The Netherlands
| | | | - Henk W. van der Veer
- Department of Coastal Systems and Utrecht University, NIOZ Royal Netherlands Institute for Sea Research, PO Box 59, 1790 AB Den Burg, Texel, The Netherlands
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Chiaverano LM, Bayha KW, Graham WM. Local versus Generalized Phenotypes in Two Sympatric Aurelia Species: Understanding Jellyfish Ecology Using Genetics and Morphometrics. PLoS One 2016; 11:e0156588. [PMID: 27332545 PMCID: PMC4917110 DOI: 10.1371/journal.pone.0156588] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Accepted: 05/17/2016] [Indexed: 01/22/2023] Open
Abstract
For individuals living in environmentally heterogeneous environments, a key component for adaptation and persistence is the extent of phenotypic differentiation in response to local environmental conditions. In order to determine the extent of environmentally induced morphological variation in a natural population distributed along environmental gradients, it is necessary to account for potential genetic differences contributing to morphological differentiation. In this study, we set out to quantify geographic morphological variation in the moon jellyfish Aurelia exposed at the extremes of a latitudinal environmental gradient in the Gulf of Mexico (GoM). We used morphological data based on 28 characters, and genetic data taken from mitochondrial cytochrome oxidase I (COI) and nuclear internal transcribed spacer 1 (ITS-1). Molecular analyses revealed the presence of two genetically distinct species of Aurelia co-occurring in the GoM: Aurelia sp. 9 and Aurelia c.f. sp. 2, named for its divergence from (for COI) and similarity to (for ITS-1) Aurelia sp. 2 (Brazil). Neither species exhibited significant population genetic structure between the Northern and the Southeastern Gulf of Mexico; however, they differed greatly in the degree of geographic morphological variation. The morphology of Aurelia sp. 9 exhibited ecophenotypic plasticity and varied significantly between locations, while morphology of Aurelia c.f. sp. 2 was geographically invariant (i.e., canalized). The plastic, generalist medusae of Aurelia sp. 9 are likely able to produce environmentally-induced, “optimal” phenotypes that confer high relative fitness in different environments. In contrast, the non-plastic generalist individuals of Aurelia c.f. sp. 2 likely produce environmentally-independent phenotypes that provide the highest fitness across environments. These findings suggest the two Aurelia lineages co-occurring in the GoM were likely exposed to different past environmental conditions (i.e., different selective pressures) and evolved different strategies to cope with environmental variation. This study highlights the importance of using genetics and morphometric data to understand jellyfish ecology, evolution and systematics.
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Affiliation(s)
- Luciano M. Chiaverano
- Department of Marine Science, University of Southern Mississippi, Stennis Space Center, Mississippi, United States of America
- * E-mail:
| | - Keith W. Bayha
- American Association for the Advancement of Science, Washington, DC, United States of America
| | - William M. Graham
- Department of Marine Science, University of Southern Mississippi, Stennis Space Center, Mississippi, United States of America
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Avian M, Ramšak A, Tirelli V, D'Ambra I, Malej A. Redescription of Pelagia benovici into a new jellyfish genus, Mawia, gen. nov., and its phylogenetic position within Pelagiidae (Cnidaria : Scyphozoa : Semaeostomeae). INVERTEBR SYST 2016. [DOI: 10.1071/is16010] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
This study provides new and additional data on morphology and a phylogenetic analysis of the recently described species Pelagia benovici Piraino, Aglieri, Scorrano & Boero, 2014 from the Northern Adriatic (Mediterranean Sea). Comprehensive morphological analyses of diagnostic characters, of which the most significant are marginal tentacles anatomy, basal pillars, gonad pattern, subgenital ostia and exumbrellar sensory pits, revealed significant differences from the currently known genera Sanderia, Chrysaora and Pelagia in the family Pelagiidae. A phylogenetic analysis of mitochondrial genes (COI, 16S rRNA, 12S rRNA) and nuclear ribosomal genes (28S rRNA, ITS1/ITS2 regions), together with cladistic analysis of morphological characters, positioned Pelagia benovici as a sister taxon with Sanderia malayensis, and both share a common ancestor with Chrysaora hysoscella. Pelagia benovici does not share a direct common ancestor with the genus Pelagia, and thus we propose it should not belong to this genus. Therefore, a new genus Mawia, gen. nov. (Semaeostomeae : Pelagiidae) is described, and Pelagia benovici is renamed as Mawia benovici, comb, nov.
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Glynn F, Houghton JDR, Bastian T, Doyle TK, Fuentes V, Lilley MKS, Provan J. High-resolution genetic analysis reveals extensive gene flow within the jellyfishPelagia noctiluca(Scyphozoa) in the North Atlantic and Mediterranean Sea. Biol J Linn Soc Lond 2015. [DOI: 10.1111/bij.12654] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- Fergal Glynn
- School of Biological Sciences; Queen's University Belfast; 97 Lisburn Road Belfast BT9 7BL UK
- Institute for Global Food Security; Queen's University Belfast; Belfast UK
| | - Jonathan D. R. Houghton
- School of Biological Sciences; Queen's University Belfast; 97 Lisburn Road Belfast BT9 7BL UK
- Institute for Global Food Security; Queen's University Belfast; Belfast UK
- Queen's Marine Laboratory; 12-13 The Strand Portaferry BT22 1PF UK
| | - Thomas Bastian
- Université du Littoral Côte d'Opale; L.O.G. UMR-8187 M.R.E.N. 32 av. du Maréchal Foch F-62930 Wimereux France
| | - Thomas K. Doyle
- Zoology; School of Natural Sciences; Ryan Institute; National University of Ireland Galway; Galway Ireland
| | - Verónica Fuentes
- Marine Science Institute; Spanish National Research Council; Barcelona Spain
| | - Martin K. S. Lilley
- School of Biological and Chemical Sciences; Queen Mary University of London; Mile End E1 4NS UK
| | - Jim Provan
- School of Biological Sciences; Queen's University Belfast; 97 Lisburn Road Belfast BT9 7BL UK
- Institute for Global Food Security; Queen's University Belfast; Belfast UK
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Glynn F, Houghton JDR, Provan J. Population genetic analyses reveal distinct geographical blooms of the jellyfishRhizostoma octopus(Scyphozoa). Biol J Linn Soc Lond 2015. [DOI: 10.1111/bij.12614] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Fergal Glynn
- School of Biological Sciences; Queen's University Belfast; 97 Lisburn Road BT9 7BL Belfast UK
- Institute for Global Food Security; Queen's University Belfast; Belfast UK
| | - Jonathan D. R. Houghton
- School of Biological Sciences; Queen's University Belfast; 97 Lisburn Road BT9 7BL Belfast UK
- Institute for Global Food Security; Queen's University Belfast; Belfast UK
- Queen's Marine Laboratory; 12-13 The Strand BT22 1PF Portaferry UK
| | - Jim Provan
- School of Biological Sciences; Queen's University Belfast; 97 Lisburn Road BT9 7BL Belfast UK
- Institute for Global Food Security; Queen's University Belfast; Belfast UK
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Genetic characterization of the scyphozoan jellyfish Aurelia spp. in Chinese coastal waters using mitochondrial markers. BIOCHEM SYST ECOL 2015. [DOI: 10.1016/j.bse.2015.02.018] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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25
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Worldwide phylogeography of the invasive ctenophore Mnemiopsis leidyi (Ctenophora) based on nuclear and mitochondrial DNA data. Biol Invasions 2014. [DOI: 10.1007/s10530-014-0770-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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First evidence of inbreeding, relatedness and chaotic genetic patchiness in the holoplanktonic jellyfish Pelagia noctiluca (Scyphozoa, Cnidaria). PLoS One 2014; 9:e99647. [PMID: 24977703 PMCID: PMC4076186 DOI: 10.1371/journal.pone.0099647] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Accepted: 05/18/2014] [Indexed: 11/29/2022] Open
Abstract
Genetic drift and non-random mating seldom influence species with large breeding populations and high dispersal potential, characterized by unstructured gene pool and panmixia at a scale lower than the minimum dispersal range of individuals. In the present study, a set of nine microsatellite markers was developed and used to investigate the spatio-temporal genetic patterns of the holoplanktonic jellyfish Pelagia noctiluca (Scyphozoa) in the Southern Tyrrhenian Sea. Homozygote excess was detected at eight loci, and individuals exhibited intra-population relatedness higher than expected by chance in at least three samples. This result was supported by the presence of siblings in at least 5 out 8 samples, 4 of which contained full-sib in addition to half-sib dyads. Having tested and ruled out alternative explanations as null alleles, our results suggest the influence of reproductive and behavioural features in shaping the genetic structure of P. noctiluca, as outcomes of population genetics analyses pointed out. Indeed, the genetic differentiation among populations was globally small but highlighted: a) a spatial genetic patchiness uncorrelated with distance between sampling locations, and b) a significant genetic heterogeneity between samples collected in the same locations in different years. Therefore, despite its extreme dispersal potential, P. noctiluca does not maintain a single homogenous population, but rather these jellyfish appear to have intra-bloom localized recruitment and/or individual cohesiveness, whereby siblings more likely swarm together as a single group and remain close after spawning events. These findings provide the first evidence of family structures and consequent genetic patchiness in a species with highly dispersive potential throughout its whole life cycle, contributing to understanding the patterns of dispersal and connectivity in marine environments.
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Dawson MN, Cieciel K, Decker MB, Hays GC, Lucas CH, Pitt KA. Population-level perspectives on global change: genetic and demographic analyses indicate various scales, timing, and causes of scyphozoan jellyfish blooms. Biol Invasions 2014. [DOI: 10.1007/s10530-014-0732-z] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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28
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Wu ZZ, Li HM, Bin SY, Ma J, He HL, Li XF, Gong FL, Lin JT. Sequence analysis of mitochondrial ND1 gene can reveal the genetic structure and origin of Bactrocera dorsalis s.s. BMC Evol Biol 2014; 14:55. [PMID: 24655832 PMCID: PMC3998037 DOI: 10.1186/1471-2148-14-55] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2013] [Accepted: 03/14/2014] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The oriental fruit fly, Bactrocera dorsalis s.s., is one of the most important quarantine pests in many countries, including China. Although the oriental fruit fly has been investigated extensively, its origins and genetic structure remain disputed. In this study, the NADH dehydrogenase subunit 1 (ND1) gene was used as a genetic marker to examine the genetic diversity, population structure, and gene flow of B. dorsalis s.s. throughout its range in China and southeast Asia. RESULTS Haplotype networks and phylogenetic analysis indicated two distinguishable lineages of the fly population but provided no strong support for geographical subdivision in B. philippinensis. Demographic analysis revealed rapid expansion of B. dorsalis s.s. populations in China and Southeast Asia in the recent years. The greatest amount of genetic diversity was observed in Manila, Pattaya, and Bangkok, and asymmetric migration patterns were observed in different parts of China. The data collected here further show that B. dorsalis s.s. in Yunnan, Guangdong, and Fujian Provinces, and in Taiwan might have different origins within southeast Asia. CONCLUSIONS Using the mitochondrial ND1 gene, the results of the present study showed B. dorsalis s.s. from different parts of China to have different genetic structures and origins. B. dorsalis s.s. in China and southeast Asia was found to have experienced rapid expansion in recent years. Data further support the existence of two distinguishable lineages of B. dorsalis s.s. in China and indicate genetic diversity and gene flow from multiple origins.The sequences in this paper have been deposited in GenBank/NCBI under accession numbers KC413034-KC413367.
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Affiliation(s)
| | | | | | | | | | | | | | - Jin-Tian Lin
- Institute for Management of Invasive Alien Species, 314 Yingdong teaching building, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, PR China.
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Assessing the genetic diversity and population structure of Culter alburnus in China based on mitochondrial 16S rRNA and COI gene sequences. BIOCHEM SYST ECOL 2013. [DOI: 10.1016/j.bse.2013.04.010] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Peijnenburg KTCA, Goetze E. High evolutionary potential of marine zooplankton. Ecol Evol 2013; 3:2765-81. [PMID: 24567838 PMCID: PMC3930040 DOI: 10.1002/ece3.644] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2013] [Revised: 04/30/2013] [Accepted: 05/06/2013] [Indexed: 11/17/2022] Open
Abstract
Open ocean zooplankton often have been viewed as slowly evolving species that have limited capacity to respond adaptively to changing ocean conditions. Hence, attention has focused on the ecological responses of zooplankton to current global change, including range shifts and changing phenology. Here, we argue that zooplankton also are well poised for evolutionary responses to global change. We present theoretical arguments that suggest plankton species may respond rapidly to selection on mildly beneficial mutations due to exceptionally large population size, and consider the circumstantial evidence that supports our inference that selection may be particularly important for these species. We also review all primary population genetic studies of open ocean zooplankton and show that genetic isolation can be achieved at the scale of gyre systems in open ocean habitats (100s to 1000s of km). Furthermore, population genetic structure often varies across planktonic taxa, and appears to be linked to the particular ecological requirements of the organism. In combination, these characteristics should facilitate adaptive evolution to distinct oceanographic habitats in the plankton. We conclude that marine zooplankton may be capable of rapid evolutionary as well as ecological responses to changing ocean conditions, and discuss the implications of this view. We further suggest two priority areas for future research to test our hypothesis of high evolutionary potential in open ocean zooplankton, which will require (1) assessing how pervasive selection is in driving population divergence and (2) rigorously quantifying the spatial and temporal scales of population differentiation in the open ocean. Recent attention has focused on the ecological responses of open ocean zooplankton to current global change, including range shifts and changing phenology. Here, we argue that marine zooplankton also are well poised for evolutionary responses to global change.
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Affiliation(s)
- Katja T C A Peijnenburg
- Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam P.O. Box 94248, 1090 GE, Amsterdam, The Netherlands ; Department Marine Zoology, Naturalis Biodiversity Center P.O. Box 9517, 2300 RA, Leiden, The Netherlands
| | - Erica Goetze
- Department of Oceanography School of Ocean and Earth Science and Technology, University of Hawaii at Manoa Honolulu, Hawaii, 96822
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Berline L, Zakardjian B, Molcard A, Ourmières Y, Guihou K. Modeling jellyfish Pelagia noctiluca transport and stranding in the Ligurian Sea. MARINE POLLUTION BULLETIN 2013; 70:90-99. [PMID: 23490349 DOI: 10.1016/j.marpolbul.2013.02.016] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2012] [Revised: 01/25/2013] [Accepted: 02/11/2013] [Indexed: 06/01/2023]
Abstract
Jellyfish blooms are generally attributed to a biological response to the environment, neglecting the role of transport patterns in redistributing existing populations. Here, we use high-resolution (1.25km) ocean modeling to examine the role of transport in the onshore arrival and abundance of the pelagic stinging jellyfish Pelagia noctiluca on the Ligurian Sea coast. Jellyfish are modeled as Lagrangian particles with a 0-300-m diel vertical migration typical of P. noctiluca. Over the course of a year, onshore arrivals are not restricted to the summer. Arrivals are concentrated at capes, but abundance can reach maxima in bays and in the lee of capes. Two factors impact jellyfish arrivals at the coast: the position of the Northern Current and the wind. A comparison of summer 2006 and available onshore jellyfish observations suggests a correct capture of the main stranding events by the model. These results have implications for understanding long-term fluctuations.
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Affiliation(s)
- L Berline
- CNRS/INSU, IRD, Mediterranean Institute of Oceanography-MIO, Université du Sud Toulon-Var, Aix-Marseille Université, UM 110, 83957 La Garde Cedex, France.
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Lee PLM, Dawson MN, Neill SP, Robins PE, Houghton JDR, Doyle TK, Hays GC. Identification of genetically and oceanographically distinct blooms of jellyfish. J R Soc Interface 2013; 10:20120920. [PMID: 23287405 DOI: 10.1098/rsif.2012.0920] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Reports of nuisance jellyfish blooms have increased worldwide during the last half-century, but the possible causes remain unclear. A persistent difficulty lies in identifying whether blooms occur owing to local or regional processes. This issue can be resolved, in part, by establishing the geographical scales of connectivity among locations, which may be addressed using genetic analyses and oceanographic modelling. We used landscape genetics and Lagrangian modelling of oceanographic dispersal to explore patterns of connectivity in the scyphozoan jellyfish Rhizostoma octopus, which occurs en masse at locations in the Irish Sea and northeastern Atlantic. We found significant genetic structure distinguishing three populations, with both consistencies and inconsistencies with prevailing physical oceanographic patterns. Our analyses identify locations where blooms occur in apparently geographically isolated populations, locations where blooms may be the source or result of migrants, and a location where blooms do not occur consistently and jellyfish are mostly immigrant. Our interdisciplinary approach thus provides a means to ascertain the geographical origins of jellyfish in outbreaks, which may have wide utility as increased international efforts investigate jellyfish blooms.
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Affiliation(s)
- Patricia L M Lee
- Department of Biosciences, College of Science, Swansea University, Singleton Park, Swansea SA2 8PP, Wales, UK.
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Genetic diversity and population structure of Nibea albiflora in the China Sea revealed by mitochondrial COI sequences. BIOCHEM SYST ECOL 2012. [DOI: 10.1016/j.bse.2012.07.028] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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