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3. Contemporary genetic structure and postglacial demographic history of the black scorpionfish, Scorpaena porcus, in the Mediterranean and the Black Seas.

Author

Boissin, E., Micu, D., Janczyszyn‐Le Goff, M., Neglia, V., Bat, L., Todorova, V., Panayotova, M., Kruschel, C., Macic, V., Milchakova, N., Keskin, Ç., Anastasopoulou, A., Nasto, I., Zane, L., and Planes, S.

Subjects
SCORPIONFISHES, SCORPAENA, BAYESIAN analysis, GENETIC code, ECOSYSTEM management
Abstract

Understanding the distribution of genetic diversity in the light of past demographic events linked with climatic shifts will help to forecast evolutionary trajectories of ecosystems within the current context of climate change. In this study, mitochondrial sequences and microsatellite loci were analysed using traditional population genetic approaches together with Bayesian dating and the more recent approximate Bayesian computation scenario testing. The genetic structure and demographic history of a commercial fish, the black scorpionfish, Scorpaena porcus, was investigated throughout the Mediterranean and Black Seas. The results suggest that the species recently underwent population expansions, in both seas, likely concomitant with the warming period following the Last Glacial Maximum, 20 000 years ago. A weak contemporaneous genetic differentiation was identified between the Black Sea and the Mediterranean Sea. However, the genetic diversity was similar for populations of the two seas, suggesting a high number of colonizers entered the Black Sea during the interglacial period and/or the presence of a refugial population in the Black Sea during the glacial period. Finally, within seas, an east/west genetic differentiation in the Adriatic seems to prevail, whereas the Black Sea does not show any structured spatial genetic pattern of its population. Overall, these results suggest that the Black Sea is not that isolated from the Mediterranean, and both seas revealed similar evolutionary patterns related to climate change and changes in sea level. [ABSTRACT FROM AUTHOR]

Published
2016
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5. Highly restricted dispersal in habitat-forming seaweed may impede natural recovery of disturbed populations

Author

Florentine Riquet, Christiane-Arnilda De Kuyper, Cécile Fauvelot, Laura Airoldi, Serge Planes, Simonetta Fraschetti, Vesna Mačić, Nataliya Milchakova, Luisa Mangialajo, Lorraine Bottin, Laboratoire d'océanographie de Villefranche (LOV), Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut de la Mer de Villefranche (IMEV), Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Ecologie marine tropicale des océans Pacifique et Indien (ENTROPIE [Nouvelle-Calédonie]), Ifremer - Nouvelle-Calédonie, Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut de Recherche pour le Développement (IRD [Nouvelle-Calédonie])-Université de la Nouvelle-Calédonie (UNC), Centre de recherches insulaires et observatoire de l'environnement (CRIOBE), Université de Perpignan Via Domitia (UPVD)-École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Ecology and Conservation Science for Sustainable Seas (ECOSEAS), Centre National de la Recherche Scientifique (CNRS)-Université Côte d'Azur (UCA), Riquet, F., De Kuyper, C. -A., Fauvelot, C., Airoldi, L., Planes, S., Fraschetti, S., Macic, V., Milchakova, N., Mangialajo, L., Bottin, L., Institut de Recherche pour le Développement (IRD [Nouvelle-Calédonie])-Ifremer - Nouvelle-Calédonie, Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de la Nouvelle-Calédonie (UNC), and Université de Perpignan Via Domitia (UPVD)-École Pratique des Hautes Études (EPHE)

Subjects
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean, Atmosphere, Conservation of Natural Resources, Ecology, Evolution, Population genetics, Conservation biology, Science, Genetic Drift, Genetic Variation, Biodiversity, Phaeophyta, Seaweed, Article, Evolutionary genetics, Genetics, Population, Black Sea, Medicine, Microsatellite Repeat, Humans, Conservation of Natural Resource, Ecosystem, Human, Microsatellite Repeats
Abstract

International audience; Abstract Cystoseira sensu lato (Class Phaeophyceae, Order Fucales, Family Sargassaceae) forests play a central role in marine Mediterranean ecosystems. Over the last decades, Cystoseira s.l. suffered from a severe loss as a result of multiple anthropogenic stressors. In particular, Gongolaria barbata has faced multiple human-induced threats, and, despite its ecological importance in structuring rocky communities and hosting a large number of species, the natural recovery of G. barbata depleted populations is uncertain. Here, we used nine microsatellite loci specifically developed for G. barbata to assess the genetic diversity of this species and its genetic connectivity among fifteen sites located in the Ionian, the Adriatic and the Black Seas. In line with strong and significant heterozygosity deficiencies across loci, likely explained by Wahlund effect, high genetic structure was observed among the three seas (ENA corrected F ST = 0.355, IC = [0.283, 0.440]), with an estimated dispersal distance per generation smaller than 600 m, both in the Adriatic and Black Sea. This strong genetic structure likely results from restricted gene flow driven by geographic distances and limited dispersal abilities, along with genetic drift within isolated populations. The presence of genetically disconnected populations at small spatial scales (

Published
2021

6. Coralligenous and maërl habitats: predictive modelling to identify their spatial distributions across the Mediterranean Sea

Author

E. Punzo, F. De Leo, Michele Gristina, Vasilis D. Valavanis, Gérard Pergent, Patrick J. Schembri, L Knitweiss, K. Terribile, Giorgio Bavestrello, Corinne S. Martin, Vesna Mačić, Marianna Giannoulaki, Vasilis Gerakaris, M. Krzelj, J. Ben Souissi, Giuseppe Guarnieri, Maria Salomidi, Marie Louise Pace, A. Belluscio, Michele Scardi, Enric Ballesteros, Germana Garofalo, Christine Pergent-Martini, Lucia Rizzo, Marina Bonacorsi, Emma Cebrian, Simonetta Fraschetti, C. S., Martin, M., Giannoulaki, F., De Leo, M., Scardi, M., Salomidi, L., Knitwei, M. L., Pace, G., Garofalo, M., Gristina, E., Ballestero, G., Bavestrello, A., Belluscio, E., Cebrian, V., Gerakari, G., Pergent, C., Pergent Martini, P. J., Schembri, K., Terribile, L., Rizzo, J., Ben Souissi, M., Bonacorsi, Guarnieri, Giuseppe, M., Krzelj, V., Macic, E., Punzo, V., Valavani, Fraschetti, Simonetta, Martin, C. S., Giannoulaki, M., De Leo, F., Scardi, M., Salomidi, M., Knitweiss, L., Pace, M. L., Garofalo, G., Gristina, M., Ballesteros, E., Bavestrello, G., Belluscio, A., Cebrian, E., Gerakaris, V., Pergent, G., Pergent-Martini, C., Schembri, P. J., Terribile, K., Rizzo, L., Ben Souissi, J., Bonacorsi, M., Guarnieri, G., Krzelj, M., Macic, V., Punzo, E., Valavanis, V., Fraschetti, S., HCMR, Hellenic Centre for Marine Research (HCMR), UNEP World Conservation Monitoring Centre, Department of Life Sciences, Università di Messina, University of Rome (UNIVERSITY OF ROME), Università degli Studi di Roma Tor Vergata [Roma], Faculty of Science, Department of Biology (UNIVERSITY OF MALTA), University of Malta [Malta], Istituto per l'Ambiente Marino Costiero, C.N.R., Centre d'Estudis Avançats de Blanes (CEAB), Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), University of Genoa (UNIGE), INAT Laboratoire Recherche-Développement Sciences et Technologie de l'Eau (INAT-LRSTE), Université de Carthage - University of Carthage-INAT, Fédération de recherche Environnement et Société (FRES 3041), Université Pascal Paoli (UPP), Department of Biology, University of Split, University of Split, University of Montenegro (UCG), Istituto di Scienze Marine [Ancona], and Consiglio Nazionale delle Ricerche (CNR)

Subjects
Mediterranean climate, Sensitive habitats, Settore BIO/07, Structural basin, Mediterranean sea, bioconstructions, Algae -- Mediterranean Sea, Biodiversity -- Mediterranean Sea, 14. Life underwater, Maerl, Multidisciplinary, Ecology -- Mediterranean Sea, Ecology, maerl habitats, Effective management, 15. Life on land, Ecological Modelling, Oceanography, Geography, Habitat, 13. Climate action, Seascapes, BIODIVERSITY, Coral, [SDE.BE]Environmental Sciences/Biodiversity and Ecology, predictive modelling, Predictive modelling
Abstract

Bioconstructions such as coralligenous outcrops and maërl beds are typical Mediterranean underwater seascapes. Fine-scale knowledge on the distribution of these sensitive habitats is crucial for their effective management and conservation. In the present study, a thorough review of existing spatial datasets showing the distribution of coralligenous and maërl habitats across the Mediterranean Sea was undertaken, highlighting current gaps in knowledge. Predictive modelling was then carried out, based on environmental predictors, to produce the first continuous maps of these two habitats across the entire basin. These predicted occurrence maps for coralligenous outcrops and maërl beds provide critical information about where the two habitats are most likely to occur. The collated occurrence data and derived distribution model outputs can help addressing the challenge of developing basin-wide spatial plans and to guide cost-effective future surveys and monitoring efforts towards areas that are presently poorly-sampled., peer-reviewed

Published
2014

7. Population genomics meet Lagrangian simulations: Oceanographic patterns and long larval duration ensure connectivity among Paracentrotus lividus populations in the Adriatic and Ionian seas.

Author

Paterno M, Schiavina M, Aglieri G, Ben Souissi J, Boscari E, Casagrandi R, Chassanite A, Chiantore M, Congiu L, Guarnieri G, Kruschel C, Macic V, Marino IAM, Papetti C, Patarnello T, Zane L, and Melià P

Abstract

Connectivity between populations influences both their dynamics and the genetic structuring of species. In this study, we explored connectivity patterns of a marine species with long-distance dispersal, the edible common sea urchin Paracentrotus lividus , focusing mainly on the Adriatic-Ionian basins (Central Mediterranean). We applied a multidisciplinary approach integrating population genomics, based on 1,122 single nucleotide polymorphisms (SNPs) obtained from 2b-RAD in 275 samples, with Lagrangian simulations performed with a biophysical model of larval dispersal. We detected genetic homogeneity among eight population samples collected in the focal Adriatic-Ionian area, whereas weak but significant differentiation was found with respect to two samples from the Western Mediterranean (France and Tunisia). This result was not affected by the few putative outlier loci identified in our dataset. Lagrangian simulations found a significant potential for larval exchange among the eight Adriatic-Ionian locations, supporting the hypothesis of connectivity of P. lividus populations in this area. A peculiar pattern emerged from the comparison of our results with those obtained from published P. lividus cytochrome b (cytb) sequences, the latter revealing genetic differentiation in the same geographic area despite a smaller sample size and a lower power to detect differences. The comparison with studies conducted using nuclear markers on other species with similar pelagic larval durations in the same Adriatic-Ionian locations indicates species-specific differences in genetic connectivity patterns and warns against generalizing single-species results to the entire community of rocky shore habitats.

Published
2017
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