Laboratory Studies on Two Organophosphorus Insecticides, DDVP and Phosphamidon, as Selective Toxicants
- 1 July 1969
- journal article
- Published by Oxford University Press (OUP) in Transactions of the American Fisheries Society
- Vol. 98 (3) , 430-437
- https://doi.org/10.1577/1548-8659(1969)98[430:lsotoi]2.0.co;2
Abstract
The cultivable carp, Labeo rohita, showed greater tolerance of both DDVP and phosphamidon than nearly all of twelve undesirable fish species and all of nine predaceous aquatic insect species tested, so that both of these toxicants proved conveniently selective in action. Variations of pH between 5.8 and 8.8 and of turbidity between 125 and 1000 ppm had only little or no influence on the toxicity of DDVP. The toxicity of phosphamidon was reduced slightly in acidic water and more markedly in turbid waters. Phytoplankton organisms are more resistant than zooplankton organisms to DDVP and phosphamidon. The more important food organisms as well as the predaceous insects are much more susceptible to these insecticides than the tested fishes. The toxicity of water treated with phosphamidon appears to be more persistent than that of water treated with DDVP.This publication has 0 references indexed in Scilit: