Acute Toxicity of Metasystox to \Nedge Clam, Donax cuneatus from west coast
Acute Toxicity of Metasystox to \Nedge Clam, Donax cuneatus from west coast
Date
1987
Authors
MULEY, D. V
AKARTE, S. R
KULKARNI, D. A
RAO, K. R
Journal Title
Journal ISSN
Volume Title
Publisher
Society of Fisheries Technologists (India) Cochin
Abstract
96 h acute toxicity tests were performed using commerciaI grade metasystox on the
marine wedge clam, Donax cuneatus during summer 1985. The behaviour and mortality
rates were recorded periodically. Most of the dams responded in opening the shell
valves and extending the siphons quicker in low test concentrations (0.004-0.0052 p.p.m)
but this was slow and late in high concentrations (0.0056-0.008 p.p.m). Mortality began
to occur in 0.008 p.p.m. from 12 h, whereas, in 0.0052 p.p.m. from 60 h onwards. The
observed LC0 value was 0.004 p.p.m. and LC50 0.0064 p.p.m. The regression equation
established was Y = 79.0891 + 33.4523 X. The rate of oxygen concentration
increased at LC0 and LC50 values compared to control indicating the disturbed
physiological adjustment. The results are correlated with physico-chemical parameters
of seawater and discussed in the light of pesticide toxicity to the dam.
Description
Keywords
Acute Toxicity ,Metasystox , Wedge Clam, Donax cuneatus, west coast
Citation
Fishery Technology 24(1):27-30