Individual and Combined Acute Lethal Toxicity of Monocrotophos and 2,4-D on the Juveniles of Etroplus suratensis (Bloch) (Pisces: Cichlidae)
Individual and Combined Acute Lethal Toxicity of Monocrotophos and 2,4-D on the Juveniles of Etroplus suratensis (Bloch) (Pisces: Cichlidae)
Date
2000
Authors
Nair, J.R. Rajasekharan
Mercy, T.V. Anna
George, Renu Maria
Journal Title
Journal ISSN
Volume Title
Publisher
Society of Fisheries Technologists (India)Cochin
Abstract
The 48 h individual and combined lethal toxicity of monocrotophos (insecticide) and
2,4-D (herbicide) on the juveniles of Etroplus suratensis were determined. The 48 h LC of
monocrotophos was 5.85 mg.l4 (5.02 to 6.69) and that of 2,4-D was 267.4 mg.l"1 (228.93 to
305.86). The median additive index and its range for the combined toxicity were worked
out. The calculated value was -0.185 (-0.541 to 0.083). A simple or strictly additive toxicity
is indicated for the mixture of monocrotophos and 2,4-D. This shows an enhanced potential
of the individual toxicant for pollution in the natural bodies when they are applied
sequentially and even simultaneously
Description
Keywords
Monocrotophos; 2,4-D; combined lethal toxicity; Etroplus suratensis
Citation
Fishery Tech 37(2):116-120