Abstract
Cypermethrin is a synthetic pyrethoid mainly used against mango insect pests. Clams are good indicators of pesticide pollution and are known to be tolerant to pesticide accumulation. Acute toxicity experiment of Cypermethrin is carried out on estuarine clam, Marcia opima. The clam exhibited significant increase in protein content of gill in LC0 and LC50 group of clams while foot, male gonad and female gonad exhibited considerable decrease in protein content. Whereas, in LC0, mantle showed high protein content. In LC50 group, hepatopancreas exhibited high protein content.
Highlights
In recent years, human intervention has brought major changes in the aquatic ecosystem
Clams showed no mortality for concentrations of cypermethrin ranging up to 1.86 ppm
In LC0 (1.86ppm) group, protein content was presented in ascending order of 12.406 ± 0.063, 20.066 ± 0.052, 20.426 ± 0.063, 22.406 ± 0.063, 29.499 ±
Summary
Human intervention has brought major changes in the aquatic ecosystem. Indiscriminate use of different pesticides in agriculture to prevent crop damage from pests has increased over the years, especially in the developing countries [2]. These pesticides, even when applied in restricted areas are washed and carried away by rains and floods to large water bodies like ponds and rivers and alter the physicochemical properties of water [3]. Cypermethrin is a highly potent and broad spectrum synthetic pyrethroid which is used extensively for pest control It is not persistent in the environment, the excess use of this pesticide may result in its entry into natural waters through agricultural run-off and cause damage to non-target organisms such as fish [4]
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