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Ravaglioli C, Benedetti-Cecchi L, Bertocci I, Maggi E, Uyà M, Bulleri F. The role of environmental conditions in regulating long-term dynamics of an invasive seaweed. Biol Invasions 2022. [DOI: 10.1007/s10530-021-02680-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
AbstractThe mechanisms underpinning long-term dynamics and viability of invader populations in the receiving environment remain largely unknown. We tested the hypothesis that temporal variations in the abundance of a well-established invasive seaweed, Caulerpa cylindracea, in the NW Mediterranean, could be regulated by inter-annual fluctuations in environmental conditions. Abundance data of C. cylindracea, sampled repeatedly between 2005 and 2020 at the peak of its growing season (late summer/early fall), were related to interannual variations in seasonal seawater temperature, wind speed and rainfall recorded during different growth phases of the alga, in both subtidal and intertidal habitats. In both habitats, higher peak of C. cylindracea cover was associated with lower seawater temperature in spring and summer, when the seaweed exits the winter resting phase and starts a period of active growth. In addition, the peak abundance of subtidal C. cylindracea was positively associated with higher autumn wind speed intensity and spring daily total precipitation. Our study reveals the importance of seasonal and interannual variation of abiotic factors in shaping temporal patterns of abundance of C. cylindracea, in both subtidal and intertidal habitats. Identifying the factors underpinning invasive population temporal dynamics and viability is essential to predict the time and conditions under which an invader can thrive, and thus guide management strategies aimed to containing invasions under current and future climates.
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Morrissey KL, Iveša L, Delva S, D'Hondt S, Willems A, De Clerck O. Impacts of environmental stress on resistance and resilience of algal-associated bacterial communities. Ecol Evol 2021; 11:15004-15019. [PMID: 34765156 PMCID: PMC8571626 DOI: 10.1002/ece3.8184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 08/10/2021] [Accepted: 08/11/2021] [Indexed: 11/18/2022] Open
Abstract
Algal-associated bacteria are fundamental to the ecological success of marine green macroalgae such as Caulerpa. The resistance and resilience of algal-associated microbiota to environmental stress can promote algal health and genetic adaptation to changing environments. The composition of bacterial communities has been shown to be unique to algal morphological niches. Therefore, the level of response to various environmental perturbations may in fact be different for each niche-specific community. Factorial in situ experiments were set up to investigate the effect of nutrient enrichment and temperature stress on the bacterial communities associated with Caulerpa cylindracea. Bacteria were characterized using the 16S rRNA gene, and the community compositions were compared between different parts of the algal thallus (endo-, epi-, and rhizomicrobiome). Resistance and resilience were calculated to further understand the changes of microbial composition in response to perturbations. The results of this study provide evidence that nutrient enrichment has a significant influence on the taxonomic and functional structure of the epimicrobiota, with a low community resistance index observed for both. Temperature and nutrient stress had a significant effect on the rhizomicrobiota taxonomic composition, exhibiting the lowest overall resistance to change. The functional performance of the rhizomicrobiota had low resilience to the combination of stressors, indicating potential additive effects. Interestingly, the endomicrobiota had the highest overall resistance, yet the lowest overall resilience to environmental stress. This further contributes to our understanding of algal microbiome dynamics in response to environmental changes.
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Affiliation(s)
| | - Ljiljana Iveša
- Center for Marine ResearchRuđer Bošković InstituteRovinjCroatia
| | - Soria Delva
- Phycology Research GroupDepartment of BiologyGhent UniversityGhentBelgium
| | - Sofie D'Hondt
- Phycology Research GroupDepartment of BiologyGhent UniversityGhentBelgium
| | - Anne Willems
- Laboratory of MicrobiologyDepartment of Biochemistry and MicrobiologyGhent UniversityGhentBelgium
| | - Olivier De Clerck
- Phycology Research GroupDepartment of BiologyGhent UniversityGhentBelgium
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3
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The joint influence of environmental and anthropogenic factors on the invasion of two alien caulerpae in northwestern Mediterranean. Biol Invasions 2021. [DOI: 10.1007/s10530-021-02654-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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4
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Pavičić M, Žužul I, Matić-Skoko S, Triantafyllidis A, Grati F, Durieux EDH, Celić I, Šegvić-Bubić T. Population Genetic Structure and Connectivity of the European Lobster Homarus gammarus in the Adriatic and Mediterranean Seas. Front Genet 2020; 11:576023. [PMID: 33365046 PMCID: PMC7750201 DOI: 10.3389/fgene.2020.576023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2020] [Accepted: 11/11/2020] [Indexed: 11/13/2022] Open
Abstract
Highly selective fishing has the potential to permanently change the characteristics within a population and could drive the decline of genetic diversity. European lobster is an intensively fished crustacean species in the Adriatic Sea which reaches high market value. Since knowledge of population structure and dynamics is important for effective fisheries management, in this study, we used 14 neutral microsatellites loci and partial mitochondrial COI region sequencing to explore population connectivity and genetic structure by comparing samples from the Adriatic Sea and the adjacent basins of the Mediterranean Sea. The obtained results suggest that neutral genetic diversity has not been significantly affected by decrease in population size due to overfishing, habitat degradation and other anthropogenic activities. Global genetic differentiation across all populations was low (F ST = 0.0062). Populations from the Adriatic Sea were panmictic, while genetic differentiation was found among populations from different Mediterranean basins. Observed gene flow for European lobster suggest that populations in the north eastern Adriatic act as a source for surrounding areas, emphasizing the need to protect these populations by establishing interconnected MPAs that will be beneficial for both fisheries and conservation management.
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Affiliation(s)
- Mišo Pavičić
- Institute of Oceanography and Fisheries, Split, Croatia
| | - Iva Žužul
- Institute of Oceanography and Fisheries, Split, Croatia
| | | | | | - Fabio Grati
- Institute for Biological Resources and Marine Biotechnologies (IRBIM), National Research Council (CNR), Ancona, Italy
| | - Eric D. H. Durieux
- UMR CNRS 6134 Sciences Pour l’Environnement, Università di Corsica Pasquale Paoli, Corte, France
- UMS CNRS 3514 STELLA MARE, Università di Corsica Pasquale Paoli, Biguglia, France
| | - Igor Celić
- National Institute of Oceanography and Applied Geophysics – OGS, Trieste, Italy
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Petrocelli A, Antolić B, Bolognini L, Cecere E, Cvitković I, Despalatović M, Falace A, Finotto S, Iveša L, Mačić V, Marini M, Orlando-Bonaca M, Rubino F, Trabucco B, Žuljević A. Port Baseline Biological Surveys and seaweed bioinvasions in port areas: What's the matter in the Adriatic Sea? MARINE POLLUTION BULLETIN 2019; 147:98-116. [PMID: 29653836 DOI: 10.1016/j.marpolbul.2018.04.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Revised: 03/10/2018] [Accepted: 04/03/2018] [Indexed: 06/08/2023]
Abstract
One of the objectives of the BALMAS project was to conduct Port Baseline Biological Surveys of native and non-indigenous benthic flora in 12 Adriatic ports. Samples of macroalgae growing on vertical artificial substrates were collected in spring and autumn 2014 and/or 2015. A total number of 248 taxa, 152 Rhodophyta, 62 Chlorophyta, and 34 Ochrophyta, were identified. Of these, 13 were non-indigenous seaweeds, mainly filamentous macroalgae, that were probably introduced through hull fouling. Some of these taxa had already been described in the study areas, others were recorded for the first time, a few were no longer detected at sites where they had previously been recorded (e.g. Sargassum muticum). Some other NISS reported for the Adriatic Sea, were not collected at any sampling site (i.e. Caulerpa cylindracea, Codium fragile). Possible reasons for the absence of these species are discussed.
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Affiliation(s)
- Antonella Petrocelli
- Institute for the Marine Coastal Environment (IAMC) - CNR, via Roma 3, 74123 Taranto, Italy.
| | - Boris Antolić
- Institute of Oceanography and Fisheries, Šet. I. Meštrovića 63, 21000 Split, Croatia.
| | - Luca Bolognini
- Institute of Marine Sciences (ISMAR) - CNR, Largo Fiera della Pesca 2, 60125 Ancona, Italy.
| | - Ester Cecere
- Institute for the Marine Coastal Environment (IAMC) - CNR, via Roma 3, 74123 Taranto, Italy.
| | - Ivan Cvitković
- Institute of Oceanography and Fisheries, Šet. I. Meštrovića 63, 21000 Split, Croatia.
| | - Marija Despalatović
- Institute of Oceanography and Fisheries, Šet. I. Meštrovića 63, 21000 Split, Croatia.
| | - Annalisa Falace
- Department of Life Science, University of Trieste, via L. Giorgieri 10, 34127 Trieste, Italy.
| | - Stefania Finotto
- Institute of Marine Sciences (ISMAR) - CNR, Castello 2737/f, 30122 Venice, Italy.
| | - Ljiljana Iveša
- Ruđer Bošković Institute, Center for Marine Research, G. Paliaga 5, 52210 Rovinj, Croatia.
| | - Vesna Mačić
- Institute of Marine Biology, University of Montenegro, 85330 Kotor, Montenegro.
| | - Mauro Marini
- Institute of Marine Sciences (ISMAR) - CNR, Largo Fiera della Pesca 2, 60125 Ancona, Italy.
| | - Martina Orlando-Bonaca
- Marine Biology Station, National Institute of Biology, Fornače 41, SI-6330 Piran, Slovenia.
| | - Fernando Rubino
- Institute for the Marine Coastal Environment (IAMC) - CNR, via Roma 3, 74123 Taranto, Italy.
| | - Benedetta Trabucco
- Institute for Environmental Protection and Research, via Vitaliano Brancati 60, 00144 Roma, Italy.
| | - Ante Žuljević
- Institute of Oceanography and Fisheries, Šet. I. Meštrovića 63, 21000 Split, Croatia.
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A new record of the invasive seaweed Caulerpa cylindracea Sonder in the South Adriatic Sea. Heliyon 2019; 5:e02449. [PMID: 31687554 PMCID: PMC6819781 DOI: 10.1016/j.heliyon.2019.e02449] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Revised: 03/13/2019] [Accepted: 09/05/2019] [Indexed: 12/19/2022] Open
Abstract
The green alga Caulerpa cylindracea Sonder is one of the most infamous and threatening invasive species in the Mediterranean Sea. Since 1985, it started rapidly spreading to all Mediterranean regions causing many ecological changes on natural communities. In the present study, we present an example of this proliferation with the first record in the Marine Protected Area of Tremiti Island (MPATI) in the South Adriatic Sea. Fifteen sites along the coast and 5 different depths have been investigated. Our results provide eveidence of a wide invasion of this pest in three islands, San Domino, San Nicola and Capraia. This study fills a particular data gap in the ongoing biomonitoring of invasive seaweeds in the Mediterranean Sea representing a base line of this invasive species for the MPATI.
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Orlando-Bonaca M, Lipej L, Bonanno G. Non-indigenous macrophytes in Adriatic ports and transitional waters: Trends, taxonomy, introduction vectors, pathways and management. MARINE POLLUTION BULLETIN 2019; 145:656-672. [PMID: 31590835 DOI: 10.1016/j.marpolbul.2019.06.065] [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: 05/24/2019] [Revised: 06/22/2019] [Accepted: 06/24/2019] [Indexed: 06/10/2023]
Abstract
The Adriatic Sea is considered as a hotspot of marine biodiversity but, due to intense human activities (e.g. maritime transport, mariculture), it is also a recipient area of non-indigenous species (NIS). This study analyzed the scientific literature on non-indigenous macrophytes (NIM) recorded in ports, marinas and transitional waters (TWs) of the Adriatic Sea, in the period 1987-2018. The results show that 51 out of 118 Mediterranean NIM are found in Adriatic ports and TWs. The Venice Lagoon is the main Adriatic recipient area of NIM. Mariculture is the main vector of introduction, whereas the principal pathways of NIM dispersal are shipping and shellfish transfer. The largest group of NIM is of temperate northern Pacific origin. This study corroborated the fact that ports and TWs act as dispersal hubs and invasion hotspots. The importance of early detection of NIM at such sites should be considered in any environmental management strategy.
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Affiliation(s)
| | - Lovrenc Lipej
- Marine Biology Station, National Institute of Biology, Fornace 41, 6330 Piran, Slovenia
| | - Giuseppe Bonanno
- Department of Biological, Geological and Environmental Sciences, University of Catania, Via Antonino Longo 19, 95125 Catania, Italy.
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Magliozzi L, Maselli V, Almada F, Di Cosmo A, Mollo E, Polese G. Effect of the algal alkaloid caulerpin on neuropeptide Y (NPY) expression in the central nervous system (CNS) of Diplodus sargus. J Comp Physiol A Neuroethol Sens Neural Behav Physiol 2019; 205:203-210. [DOI: 10.1007/s00359-019-01322-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Revised: 02/18/2019] [Accepted: 02/21/2019] [Indexed: 11/24/2022]
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9
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Bray L, Kassis D, Hall-Spencer JM. Assessing larval connectivity for marine spatial planning in the Adriatic. MARINE ENVIRONMENTAL RESEARCH 2017; 125:73-81. [PMID: 28187325 DOI: 10.1016/j.marenvres.2017.01.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Revised: 01/23/2017] [Accepted: 01/24/2017] [Indexed: 06/06/2023]
Abstract
There are plans to start building offshore marine renewable energy devices throughout the Mediterranean and the Adriatic has been identified as a key location for wind farm developments. The development of offshore wind farms in the area would provide hard substrata for the settlement of sessile benthos. Since the seafloor of the Adriatic is predominantly sedimentary this may alter the larval connectivity of benthic populations in the region. Here, we simulated the release of larvae from benthic populations along the coasts of the Adriatic Sea using coupled bio-physical models and investigated the effect of pelagic larval duration on dispersal. Our model simulations show that currents typically carry particles from east to west across the Adriatic, whereas particles released along western coasts tend to remain there with the Puglia coast of Italy acting as a sink for larvae from benthic populations. We identify areas of high connectivity, as well as areas that are much more isolated, and discuss how these results can be used to inform marine spatial planning and the licensing of offshore marine renewable energy developments.
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Affiliation(s)
- L Bray
- Hellenic Centre for Marine Research, Institute of Oceanography, Athens, Greece; Marine Biology and Ecology Research Centre, University of Plymouth, UK.
| | - D Kassis
- Hellenic Centre for Marine Research, Institute of Oceanography, Athens, Greece; Department of Naval Architecture and Marine Engineering, National Technical University of Athens, Athens, Greece
| | - J M Hall-Spencer
- Marine Biology and Ecology Research Centre, University of Plymouth, UK; Shimoda Marine Research Centre, Tsukuba University, Japan
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