Ovarian damage to Channa punctatus after chronic exposure to low concentrations of Elsan, mercury, and ammonia.

@article{Dey1989OvarianDT,
  title={Ovarian damage to Channa punctatus after chronic exposure to low concentrations of Elsan, mercury, and ammonia.},
  author={Syamal K Dey and Samir Bhattacharya},
  journal={Ecotoxicology and environmental safety},
  year={1989},
  volume={17 2},
  pages={247-57}
}
Histopathological changes were induced in the ovary by chronic nonlethal levels of Elsan (211 ppb), mercury (16.7 ppb), and ammonia (15.64 ppm). In the breeding season, treated Channa punctatus revealed a significant decrease in ovarian weight throughout the duration of the experiment. Acute changes were noted in the diameter and percentage occurrence of the different stages of oocytes. In all cases, stage I oocytes revealed no difference in diameter with respect to control although they… CONTINUE READING