The harpacticoid copepod Tisbe holothuriae is resistant to the insidious effects of polyunsaturated aldehyde-producing diatoms

摘要: Abstract Numerous species of diatoms liberate oxylipins including polyunsaturated aldehydes (PUAs) in response to cellular damage such as may occur during grazing. PUAs are cyto- and genotoxic negatively disrupt reproductive processes copepods, their principal grazers, although experimental evidence would suggest that the grazer be specific. The reproduction benthic harpacticoid copepod Tisbe holothuriae was compared over two generations. Copepods were reared using four diet treatments: PUA-producing diatom strains Skeletonema marinoi (Adriatic Sea Isolate FE6) Melosira nummuloides (CCAP 1048/6); non-PUA-producing Phaeodactylum tricornutum 1052/A) S. (Seasalter (Walney) Ltd). Life tables generated for each treatment measured parameters net rate ( R 0 ) calculated. No significant differences observed between individual T. fed those diets P . resulted some decreases second generation. There no values tested diets. These observations indicate exhibits a tolerance known has not been similarly demonstrated pelagic calanoid copepods. Harpacticoid copepods have greater capacity detoxify than planktonic counterparts.