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VOL. 8, ISSUE 6 (2023)
Effect of sub lethal exposure to dimethoate along with botanical extract on larval growth and development of Bombyx mori L
Authors
Barna Chakraborty
Abstract
Dimethoate, an extensively used systemic and contact organophosphorus
insecticide, is exploited in agriculture in order to control in sectpests and
acarids due to its rapid action and degradation. It is well-known from the
literature study that Organophosphate toxicity of Dimethoate exert its
influence by interfering the acetyl cholinesterase activity which splits the
neurotransmitter acetylcholine. The silkworm Bombyx mori L. is a domesticated
insect which was identified for the commercial production of mulberry silk.
Silkworms are influenced by acute toxicity or sublethal doses of insecticides
through leaf contamination often showed retardation of growth and development.
An experimental study was performed in order to assess the effect of insecticides
on the silkworm Bombyx mori L fed with the mulberry leaves treated with
organophosphorus insecticide like Dimethoate as well as botanical pesticide
such as Neem oil. Identical sublethal concentrations of Dimethoate 30% EC
(0.001%, 0.002%, 0.003%) and neem oil (0.01%,0.02&0.03 %) were prepared in
deionized water and silkworm larva for IIIrd, IVth& Vth instars were
subjected to get exposed for feeding to those pesticide sprayed leaves. The
larval weight and duration were influenced by insecticides treated leaves
depending on the varied concentrations of the pesticides. It has been observed
that Neem oil had been found to exhibit more effect on the silkworm larval
weight and duration in comparison with Dimethoate.
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Pages:19-22
How to cite this article:
Barna Chakraborty "Effect of sub lethal exposure to dimethoate along with botanical extract on larval growth and development of <i>Bombyx mori</i> L". International Journal of Entomology Research, Vol 8, Issue 6, 2023, Pages 19-22
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