Inhibition of Esterases of the Freshwater Snails Helisoma duryi and Lymnaea natalensis by Mixtures of Pesticides.
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Date
2012-02-02
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
World Academic Publishing.
Abstract
Pesticides indirectly reach aquatic reservoirs via aerial
drifts and as runoffs where they affect aquatic organisms.
Aquatic reservoirs receive different pesticides from the different
fields which usually surround them. However, studies
i investigating effects of pesticide mixtures on aquatic biota is
limited. The effects of six pesticides and their mixtures on
esterase activity of two freshwater snail species were investigated.
Groups of snails were exposed to individual as well as mixtures
of the pesticides for 96 hours before analysing for esterase
activity. All pesticides inhibited esterase activity in exposed snails.
Binary mixtures of pesticides caused additive or synergistic
inhibitions of esterase activities when compared to effects of
individual pesticides. The results indicated the importance of
chemical interactions on the overall effects of pesticides on
aquatic organisms
Description
An article with illustrations.
Keywords
Pesticides, Binary mixtures, Snails, Esterases,, Inhibition
Citation
Basopo N and Naik Y.S. (2012) Inhibition of Esterases of the Freshwater Snails Helisoma duryi and Lymnaea natalensis by Mixtures of Pesticides. World Academic Publishing