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VOL. 9, ISSUE 7 (2024)
Chemical profiling and assessment of egg hatchability with different solvent extracts of selected invasive weeds
Authors
Gharpure Pallavi, Bansod Vaishali, Ghayal Nivedita
Abstract
A revolutionary change is utmost important to
overcome the problems created due to overuse of chemical pesticides.
Phyto-pesticides will be economically available at an affordable price,
environmentally safe and reduce the cost of synthetic chemicals. Plant families
such as Asteraceae, Lamiaceae, Meliaceae, Rutaceae and Solanaceae are widely
known to possess various types of larvicidal, adulticidal, repellent,
oviposition deterrent and ovicidal/egg hatchability activities against
different species of mosquitoes studied till today. Weeds are nowadays
preferable plants for research because of their easy availability and
undesirability. Botanical pesticides can be in the form of essential oils,
plant extracts or secondary metabolites like alkaloids, polyphenols, steroids,
terpenes or fatty acids. Alkaloids along with tannins, steroids, glycosides,
triterpenoids and saponins present in plants possess insecticidal properties.
β-sitosterol in plants, animals, microbes are well known to possess
insecticidal/ toxic larvicidal property. These compounds also possess
adulticide, repellent and oviposition-deterrent property. Studies conducted
have revealed that these compounds affect the autonomous nervous system,
constrict the blood vessels at very low concentrations and are reported to be
toxic to larvae of Aedes aegypti, Culex and Anopheles mosquito
species. Ovicidal effects of phytochemicals have not been studied to greater
extent hence undertaken for study. The present investigations were carried out
to assess the ovicidal/ egg hatchability efficiency of three weeds Euphorbia
heterophylla L (Euphorbiaceae), Cosmos sulphureus Cav (Asteraceae)
and Alternanthera tenella Colla (Amaranthaceae) against Aedes
aegypti L (Diptera: Culicidae). In present study petroleum ether,
chloroform, ethyl acetate and methanolic extracts of all 3 weeds exhibited
variable ovicidal effects. Zero hatchability was observed at 1000 ppm with
ethyl acetate extracts of Cosmos and Euphorbia. Chloroform
and ethyl acetate extracts of Alternanthera showed similar results at
1000 ppm concentration whereas petroleum ether extracts showed significant
results at lower concentration (400 ppm).
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Pages:1-8
How to cite this article:
Gharpure Pallavi, Bansod Vaishali, Ghayal Nivedita "Chemical profiling and assessment of egg hatchability with different solvent extracts of selected invasive weeds". International Journal of Entomology Research, Vol 9, Issue 7, 2024, Pages 1-8
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