Interactions of Insecticide Thiodan (Endosulfan) and Heavy Metal Chromium and Impact On Fish and Aquatic Ecosystem
Titel:
Interactions of Insecticide Thiodan (Endosulfan) and Heavy Metal Chromium and Impact On Fish and Aquatic Ecosystem
Auteur:
Sarkar, U. K. Konar, S. K.
Verschenen in:
Chemistry & ecology
Paginering:
Jaargang 13 (1997) nr. 4 pagina's 271-278
Jaar:
1997-07-01
Inhoud:
Acute 96-hour bioassay tests of a mixture of an organochlorine insecticide thiodan (endosulfan) and heavy metal chromium on fish, Oreochromis mossambicus, worm, Branchiura sowerbyi, and plankton, Cyclops uiridis, showed different modes of interaction. the LC5 to LC95 combined values of thiodan and chromium range from 622.55-756.25mg 1-1 for fish, <12.5-373.8mg 1-1 for worms, and <1.0-36.2mg 1-1 for plankton. the fish sublethal dose (<622.55mg 1-1) of the mixture significantly hampered feeding rate, yield (kg/ha) and reproduction of fish. Free carbon dioxide level of exposed water was significantly increased with sublethal concentrations of mixture and plankton population was significantly decreased.
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