| Abstract: | Mortality to fish Channa punctatus caused by the latices of four species of terrestrial plants belonging to family Euphorbiaceae and Apocynaceae have been reported. It was found that extremely dilute aqueous solutions of the latex were effective in killing the fishes. The ranking of toxicity of four plants was Nerium indicum > Euphorbia royleana > Thevetia peruviana > Jatropha gossypifolia. It has been suggested that these plant products cannot be used directly in freshwater ecosystem unless their detailed toxicity has been studied on the beneficial freshwater animals. |
