Crustaceans can store excess copper in the hepatopancreas, an organ playing a role in digestive activity as well as in neurosecretory control. Here, we studied the effect of copper exposure on the level of histamine, an indicator of food spoilage in edible crustaceans. Histamine is also a neuromodulator in the intestinal nervous system of crustaceans, and a human allergen. Marbled crayfish (Procambarusfallax forma virginalis) were exposed to average measured values of 0.031 mg Cu/l and 0.38 mg Cu/l, respectively, for 14 days and then transferred to copper-free water for another 14 days. Concentrations of copper and histamine in the hepatopancreas and muscle were evaluated at different time points. Histamine levels were significantly higher in hepatopancreas and muscle tissues at the highest exposure level, but only after transfer of the animals to copper-free water. The increased histamine concentration following copper exposure may be explained by a (delayed) stress response, and by up-regulated histidine synthesis induced by copper, followed by decarboxylation to histamine.
Metal accumulation in crayfish, Procambarus clarkii, exposed to a petroleum-contaminated Bayou in Louisiana.
Ecotoxicol. Environ. Saf.,
Effect of long-term exposure to silver or copper on growth, bioaccumulation and histopathology in blue mussel Mytilus edulis.
Mar. Environ. Res.,
Heavy metal contamination and physiology variability in the Brazilian mangrove crabs Ucides cordatus and Callinectes danae (Crustacea: Decapoda).
Impact of waterborne copper on the structure of gills and hepatopancreas and its impact on the content of metallothionein in juvenile giant freshwater prawn Macrobrachium rosenbergii (Crustacea: Decapoda).
Arch. Environ. Contam. Toxicol.,
MartinsC.M.G.BarcarolliI.F.de MenezesE.J.GiacominM.M.WoodC.M.BianchiniA. (2011)
Acute toxicity, accumulation and tissue distribution of copper in the blue crab Callinectes sapidus acclimated to different salinities: in vivo and in vitro studies.
Bioaccumulation of copper in post-larvae and juveniles of freshwater prawn Macrobachium rosenbergii (de Man) exposed to sub-lethal levels of copper sulfate.
VeltmanK.HuijbregtsM.A.J.van KolckM.WangW.X.HendriksA.J. (2008)
Metal bioaccumulation in aquatic species: quantification of uptake and elimination rate constants using physicochemical characteristics of metals and physiological characteristics of species.
Environ. Sci. Technol.,