Bioefficacy, Auto-Dissemination And Venereal Transfer Of Mosuiron 0.12P In Aedes Albopictus (Skuse) ( Diptera: Culicidae ) Population
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Date
2017-01
Authors
Ng, Kin Hoong
Journal Title
Journal ISSN
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Publisher
Universiti Sains Malaysia
Abstract
Insect growth regulators (IGRs) offer alternatives to conventional chemical larvicides that pose problem of resistance and environmental safety. However, there is only a limited number of IGRs approved for use in mosquito control. In this current study, the effectiveness of Mosquiron® 0.12P (IGR) containing novaluron against Aedes albopictus larvae were studied in the laboratory. The IE50 (inhibition of emergence) for 24 hours, 48 hours, 72 hours and 96 hours were in the range of 3.11 x 104mg a.i./L to 3.05 x 102 mg a.i./L for the first-instar larvae. Whereas the IE95 for 24 hours, 48 hours, 72 hours and 96 hours were in the range of 2.52 x 108mg a.i. /L to 1.48 x 108 mg a.i. /L for the first-instar larvae. IE50 and IE95 increased as larval development progressed. Percentage of larval mortality against Mosquiron® 0.12P gradually increased as the concentration of Mosquiron® 0.12P increased. The bioefficacy of Mosquiron® 0.12P showed > 90% of emergence inhibition against Ae. albopictus larvae after being stored for 5 months. Autodissemination station design B was more effective in suppressing late third – instar/ early fourth – larvae compared to autodissemination station design A. Whereas autodissemination station using sucrose as a lure was more effective than that using rat in luring adult mosquitoes. Aedes albopictus treated with Mosquiron® 0.12P showed differences in fertility, pupation rate, adult emergence rate, longevity, male and female emergence rate but no difference in fecundity compared to control for the parental generation. Sublethal effect against Ae. albopictus that were treated with Mosquiron® 0.12P showed differences in adult emergence rate, longevity, male and female emergence rate but
no difference in fecundity, fertility and pupation rate compared to the control population. Venereal transfer of Mosquiron® 0.12P from contaminated virgin males to uncontaminated virgin females showed that the mean mortality of third-instar larvae were higher than the venereal transfer of Mosquiron® 0.12P from contaminated virgin females to uncontaminated virgin males during insecticide bioassay.
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Keywords
Bioefficacy, auto-dissemination and venereal transfer , of Mosuiron 0.12P in Aedes albopictus