Mechanism of abrupt increase in toxicity of organophosphorothionates to tiger shrimp larvae with progress of stages

K. Kobayashi, R. M. Rompas, N. Imada, Y. Oshima

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

2 被引用数 (Scopus)

抄録

To elucidate the cause of an abrupt increase in the toxicity of organophosphorus pesticides to tiger shrimp Penaeus japonicus with the progress of larval stages, the toxicity of the pesticides to the shrimp larvae and the inhibition of larval acetylcholinesterase (AChE) by the pesticides, and the metabolism of fenitrothion (FS) in the larvae were studied at different stages, respectively. The toxicity of thiono-forms to the larvae increased abruptly with the progress of stages, whereas that of oxo-forms was unchanged from nauplius to postlarva. The susceptibility of larval AChE to each pesticide was almost unchanged in these stages. FS metabolic activity of zoea was very low, but the activity increased abruptly with their growth and resulted in the increase of fenitrooxon which displays extremely high toxicity as compared with FS, i.e., the increase in the toxicity of thiono-forms to shrimp larvae with the progress of the stages must be due to the increase in the oxidative desulfuration activity.

本文言語英語
ホスト出版物のタイトルWater Science and Technology
ページ487-496
ページ数10
23
1-3
DOI
出版ステータス出版済み - 1991
イベントProceedings of the 15th Biennial Conference of the International Association on Water Pollution Research and Control - Kyoto, Jpn
継続期間: 7 29 19908 3 1990

その他

その他Proceedings of the 15th Biennial Conference of the International Association on Water Pollution Research and Control
CityKyoto, Jpn
Period7/29/908/3/90

All Science Journal Classification (ASJC) codes

  • Environmental Engineering
  • Water Science and Technology

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