title: Effect of some insecticides on the periodic activity of the fresh-water mussel (Anodonta cygnea L.).
abstract: The effect of the insecticides Hungaria L-7, Dimecron-50, Thimet-10 G and Satox 20 WSC containing lindane, phosphamidon, phorate and trichlorfon, respectively, as active ingredient was investigated on the survival and pumping behaviour of the fresh-water mussel Anodonta cygnea L. The shortening of active periods was used as indicator of the sublethal effects. Hungaria L-7, Thimet-10 G and Satox 20 WSC caused significant inhibition of the filtering activity, while Dimecron-50 was less effective. Fifty per cent shortening of active periods required 6 X 10-3 g/l Hungaria L-7, 8 X 10-3 g/l Thimet-10 G and 2 X 10-2 ml/l Satox 20 WSC. Thimet and Satox were lethal at 10-1 g/l and 1 m/l concentrations, respectively. Although the mechanism of the effect can be different with various substances, the results have shown, that monitoring of the activity of mussels can be a suitable test for the biological indications of water pollution.
mesh_terms: D000818:Animals; D049872:Bivalvia / Q000187:drug effects*; D004305:Dose-Response Relationship, Drug; D001556:Hexachlorocyclohexane / Q000494:pharmacology; D007306:Insecticides / Q000494:pharmacology*; D009043:Motor Activity / Q000187:drug effects; D010507:Periodicity / Q000187:drug effects; D010702:Phorate / Q000494:pharmacology; D010707:Phosphamidon / Q000494:pharmacology; D014236:Trichlorfon / Q000494:pharmacology
chemical_list: D007306:Insecticides; D010707:Phosphamidon; D010702:Phorate; D001556:Hexachlorocyclohexane; D014236:Trichlorfon