Effect of some plant extracts on the first and second larval instar of Culex pipines pipines L
DOI:
https://doi.org/10.25130/tjps.v23i9.804Keywords:
Culex pipiens pipiens L, Plant extracts, mortalityAbstract
The present study aimed to study some alternatives chemical
pesticides and observation their effect on the life of the first and second
larva instar of Culex pipiens pipiens L. for this reason, this species of
mosquitoes was raised in the breeding cage, which was locally produced.
The plant extracts of the seeds of the Nigella sativa, Azadirachta indica,
Sesbania sesban and Lagenaria vulgaris, the larvae of the first and
second instar of mosquitoes were treated with plant extracts by
concentrations of 100, 500, 1000, 5000, ppm. The study showed different
results according to the concentration and duration of treatment. The
treatment with plant extracts showed that the Nigella sativa seed extract
is higher than the rest of the plant extracts. The mortality percentage was
93.3% in the concentration of 5000 ppm after 24 hours of treatment.The
mortality percentage for the same extract was 100% at the concentration
of 5000 ppm within 48 hours of treatment for the first larval instar, while
the mortality percentage for the extract were 100% at 5000ppm
concentration during 24 and 48 hours of treatment for the second larval
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