5种有机磷农药对鮸状黄姑鱼胚胎和仔鱼毒性的研究

STUDIES ON THE TOXICITIES OF FIVE TYPES OF ORGANOPHOSPHATES TO THE EMBRYONIC AND LARVAL DEVELOPMENT OF Nibea miichthioldes

研究了敌百虫、敌敌畏、甲胺磷、呋喃丹和乐果等5种有机磷农药对状黄姑鱼（Nibeamiichthioides）胚胎和前期仔鱼的毒性。结果表明，在实验设置的浓度条件下，甲胺磷对胚胎的毒性最大；乐果对胚胎的毒性最小；敌百虫和敌敌畏对仔鱼的毒性大于其他3种有机磷农药；敌百虫、敌敌畏、甲胺磷和呋喃丹对仔鱼的毒性大于对胚胎的毒性，而乐果对两者的毒性基本相似。

The toxocities of five types of organophosphates, thrichlorfon, dichlovos, methamidophos, carbofuran and dimet hoate, to the embryonic and larval development of Nibea miichthioides were investigated. Among these organophosp hates, the methami dophos was the most toxic to the embryonic development, while the thrichlorfon and dichlovos were more toxic to the larval de velopment than the others. The thricnlorfon, dichlovos, methamidophos and carbofuran were more toxic to the larva than to the embryo. However, the toxocity of the dimethoate to the larva was the same as to the embryo.