排序方式： 共有2条查询结果，搜索用时 0 毫秒
1
1.
The toxic effects of Zn2+ on Silver Carp (Hypophthalmichthyps molitrix C. et V.), Big Head Carp (Aristrichthys nobilis Richardson). Grass Carp (Ctenopharyngodon ilellus C. et V.), and Blunt Snout Bream (Megalobrama aimbly-cephala Yih) are studied. The test results are: (1) There are linear correlations between 24h LC50 and 48h LC50 of Zn + for Silver Carp fingerling and tempera -ture . 24h LC50, 48h LC50 and 96h LC50 of Zn2+ for fry of the four species are also determined; (2) There are logarithmic correlations between the growth rates of the fry and the concentrations of Zn2+ and between expansion of fish egg membranes after absorbing water and concentrations of Zn2 + ; (3) The tolerance of fry of the four species to Zn + is in the following order: Grass Carp>Silver Carp > Blunt Snout Bream>Big Head Carp; (4) The safe concentrations of Zn2+ are: Big Head Carp : 0.008 mg/ L, Grass Carp : 0.046 mg/ L , Blunt Snout Bream: 0,010 mg/ L , Silver Carp : 0.012 mg/ L , Silver Carp fingerling: 0.09 mg/ L . 相似文献
2.
This study deals with the toxic effects of Zn2+, Cu2+, Cd2+ and NH3 on Chinese prawn (Penaeus orientalis). The median lethal concentrations of the toxic matters on Chinese prawn were determined. Cd2+>Cu2+>Zn2+>NH3-Nm is the toxic order of these chemicals to Chinese prawn. The toxic order of concentrated Zn2+ and Cd2+ in tissues and organs of Chinese prawn is in the order gill > shell + appendage>viscera > muscle.. 相似文献
1