How life history contributes to stress response in the Manila clam Ruditapes philippinarum.

Environmental Science and Pollution Research International
Ika Paul-PontMagalie Baudrimont

Abstract

Within the last decade, numerous studies have investigated the role of environmental history on tolerance to stress of many organisms. This study aims to assess if Manila clams Ruditapes philippinarum may react differently to cadmium exposure and trematode parasite infection (Himasthla elongata) depending on their origin and environmental history in Arcachon Bay (France). Clams were exposed to Cd (15 microg L(-1)) and parasites (25 cercariae per clam), alone or in combination, at 15 degrees C under controlled laboratory conditions for 7 days. Metal accumulation and success of parasite infestation were examined, also physiological parameters such as metallothionein response and hemocyte counts and activities (phagocytosis, oxidative burst, viability, and adhesion). Sensitivity of Manila clams to both stressors differed from one site to another, suggesting local adaptation of populations. Clams from the more parasitized site presented better resistance to trematodes than the others in terms of first line defense, i.e., avoidance of infection. On the other hand, clams that adapted to chronic Cd contamination showed better detoxification mechanisms, both in a faster transfer of metal from gills to visceral mass and in a higher meta...Continue Reading

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Citations

Apr 29, 2014·Biological Trace Element Research·Liqiang ZhaoXiwu Yan
Aug 3, 2012·Ecotoxicology and Environmental Safety·Etelvina FigueiraRosa Freitas
May 9, 2012·Comparative Biochemistry and Physiology. Toxicology & Pharmacology : CBP·Etelvina FigueiraRosa Freitas
Oct 29, 2015·Environmental Science and Pollution Research International·Nadia CasattaLuigi Viganò
Aug 3, 2017·Environmental Science and Pollution Research International·Laura LeiteArtur Alves
Oct 7, 2018·Environmental Pollution·Luísa MagalhãesRosa Freitas

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