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|Title: ||Predatory ability of Mesocyclops Aspericornis on the larvae of Culex Quinquefasciatus under monocrotophos polluted condition|
|Authors: ||V. Nathiya,|
P. Saravana Bhavan,
|Keywords: ||Culex quinquefasciatus|
|Issue Date: ||2018-10-22T08:06:30Z
|Publisher: ||INTERNATIONAL JOURNAL OF MODERN RESEARCH AND REVIEWS|
|Abstract: ||Abstract: In the present study, a biological approach with Mesocyclops aspericornis was adopted for determining its predatory ability
on the larvae of Culex quinquefasciatus under unpolluted, and polluted conditions with a synthetic organic insecticide,
monocrotophos. The 24 hr LC50 value of monocrotophos to different instar larvae of C. quinquefasciatus was ranged between
3.045 - 9.357 ppm (3.045, 4.227, 6.232 and 9.357 ppm for I, II, III and IV Instar respectively). In this study, monocrotophos
polluted condition (1 ppb of commercial grade as such) was created artificially in the laboratory. The predatory ability of M.
aspericornis against the larval instars of C. quinquefasciatus in normal (unpolluted) condition was ranged between 66 – 2.8
% at 5 days duration (66, 42.2, 9.6 and 2.8% for I, II, III and IV instar respectively). The predatory ability of M. aspericornis
against the larval instars of C. quinquefasciatus under monocrotophos polluted condition was ranged between 83.6 – 13.2%
at 5 days (83.6, 61, 22 and 13.2% for I, II, III and IV instar respectively). C. quinquefasciatus larval mortality rate against
monocrotophos was instar dependent and toxic dose dependent. I-instar was more susceptible to monocrotophos, followed by
other instars. Actually, the toxicity of monocrotophos to M. aspericornis showed some resistance. The predatory ability of M.
aspericornis against C. quinquefasciatus was instar dependent and toxic condition dependent. This ability was higher against
the I-instar larvae over other instars. The overall predatory ability of M. aspericornis against C. quinquefasciatus was higher
under monocrotophos polluted condition than that of the unpolluted environmental conditions. This suggests that the survival
of M. aspericornis was higher in polluted environment and under such an environment its predatory ability was also
enhanced as this species is pollution indicator.
|Relation: ||3(3) pp.630-634|
|Appears in Collections:||[生命科學暨生物科技學系] 期刊論文|
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