Back to Search
Start Over
Why is Asari (=Manila) clam Ruditapes philippinarum fitness poor in Arcachon Bay: A meta-analysis to answer?
- Source :
- 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
- Publication Year :
- 2016
-
Abstract
- 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.
- Subjects :
- 0106 biological sciences
Condition index
Population
Ruditapes
Aquatic Science
Biology
Oceanography
01 natural sciences
Perkinsus
Aquaculture
E2
Ruditapes philippinarum
Ecosystem
14. Life underwater
education
Trophic level
education.field_of_study
business.industry
Ecology
010604 marine biology & hydrobiology
ACL
04 agricultural and veterinary sciences
Arcachon Bay
biology.organism_classification
Marine Biology & Hydrobiology
Fishery
Immune system
Element contamination
Brown Muscle Disease
040102 fisheries
0401 agriculture, forestry, and fisheries
[SDE.BE]Environmental Sciences/Biodiversity and Ecology
business
Bay
Subjects
Details
- ISSN :
- 02727714 and 10960015
- Database :
- OpenAIRE
- Journal :
- 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
- Accession number :
- edsair.doi.dedup.....6c909bfcaae855d6419e56f1e9e11dad