Why is Asari (=Manila) clam Ruditapes philippinarum fitness poor in Arcachon Bay: A meta-analysis to answer?

Autor: C. Binias, Ika Paul-Pont, Guillaume Meisterhans, Patrice Gonzalez, Florence Sanchez, Hélène Hégaret, N. Raymond, Florence Jude-Lemeilleur, Malwenn Lassudrie, Magalie Baudrimont, X. de Montaudouin, Van Tu Do, Magali Lucia, N. Le Goïc, Nathalie Mesmer-Dudons, Guillemine Daffe, Alexia Legeay, Martin Plus, Nathalie Caill-Milly, W. Mehdioub, Patrick Lassus, Line Bourasseau, Philippe Soudant, Christophe Lambert, Frédéric Garabetian
Přispěvatelé: Environnements et Paléoenvironnements OCéaniques (EPOC), Observatoire aquitain des sciences de l'univers (OASU), Université Sciences et Technologies - Bordeaux 1-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-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), Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR), Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM), Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Institut Français de Recherche pour l'Exploitation de la Mer - Atlantique (IFREMER Atlantique), Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER), Laboratoire Laboratoire Environnement Ressources Morbihan Pays de Loire (LER/MPL)
Rok vydání: 2016
Předmět:
Zdroj: Estuarine, Coastal and Shelf Science
Estuarine, Coastal and Shelf Science, Elsevier, 2016, 179, pp.226-235. ⟨10.1016/j.ecss.2015.09.009⟩
Estuarine Coastal And Shelf Science (0272-7714) (Academic Press Ltd-Elsevier Science Ltd), 2016-09, Vol. 179, P. 226-235
ISSN: 0272-7714
1096-0015
DOI: 10.1016/j.ecss.2015.09.009⟩
Popis: 00000; International audience; Asari (= Manila) clam, Ruditapes philippinarum, is the second bivalve mollusc in terms of production in the world and, in many coastal areas, can beget important socio-economic issues. In Europe, this species was introduced after 1973. In Arcachon Bay, after a decade of aquaculture attempt, Asari clam rapidly constituted neo-naturalized population which is now fished. However, recent studies emphasized the decline of population and individual performances. In the framework of a national project (REPAMEP), some elements of fitness, stressors and responses in Arcachon bay were measured and compared to international data (41 publications, 9 countries). The condition index (CI=flesh weight/shell weight) was the lowest among all compared sites. Variation in average Chla concentration explained 30% of variation of CI among different areas. Among potential diseases, perkinsosis was particularly prevalent in Arcachon Bay, with high abundance, and Asari clams underwent Brown Muscle Disease, a pathology strictly restricted to this lagoon. Overall element contamination was relatively low, although arsenic, cobalt, nickel and chromium displayed higher values than in other ecosystems where Asari clam is exploited. Finally, total hemocyte count (THC) of Asari clam in Arcachon Bay, related to the immune system activity, exhibited values that were also under what is generally observed elsewhere. In conclusion, this study, with all reserves due to heterogeneity of available data, suggest that the particularly low fitness of Asari clam in Arcachon Bay is due to poor trophic condition, high prevalence and intensity of a disease (perkinsosis), moderate inorganic contamination, and poor efficiency of the immune system.
Databáze: OpenAIRE
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