G. Amblard et al., Effects of carbofuran, a carbamate insecticide, on biological performancesof young pike (Esox lucius L., 1758): Preliminary results., B FR PECHE, (350-51), 1998, pp. 529-534
Citations number
21
Categorie Soggetti
Aquatic Sciences
Journal title
BULLETIN FRANCAIS DE LA PECHE ET DE LA PISCICULTURE
Pike free embryos were introduced into glass beakers and exposed under stat
ic conditions to solutions (0-250 mu g.L-1) of carbofuran, a carbamate inse
cticide inhibiting acetylcholinesterase (AchE) activity. From a carbofuran
concentration of 10 mu g.L-1,,the overall AchE activity in free embryos was
significantly inhibited. From 50 mu g.L-1, the mean level of attachment of
free embryos to the beakers walls decreased significantly. The number of z
ooplanktonic prey ingested by pike larvae was not significantly affected by
exposure to carbofuran; however, this parameter tended to decrease with in
creasing concentrations of carbofuran. In free embryos exposed to 250 mu g.
L-1 carbofuran, yolk sac resorption was very incomplete and the transformat
ion into larvae did not take place.
The present study demonstrates that sublethal exposures to carbofuran may a
ffect ontogenetic changes and biological performances in pike young stages.
Further developments of this work are planned in several directions.