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Laboratory Evaluation of the Lethal Efficacy of an Insect Growth Regulator, Pyriproxyfen against Anopheles sinensis (Diptera, Culicidae) Larvae
Author(s) -
LEE WonJa,
LEE DongKyu
Publication year - 2005
Publication title -
entomological research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.421
H-Index - 20
eISSN - 1748-5967
pISSN - 1738-2297
DOI - 10.1111/j.1748-5967.2005.tb00135.x
Subject(s) - pyriproxyfen , biology , insect growth regulator , anopheles sinensis , larva , insect , anopheles , forensic entomology , zoology , toxicology , ecology , malaria , immunology
The granular formulation of 0.5% pyriproxyfen is a mosquito insect growth regulator larvicide. It was evaluated for residual activity for killing and/or emergence inhibition against 3rd stage larvae of Anopheles sinensis in the laboratory. Mortality rates ranged from 60.9% to 79.7% at 0.01, 0.05 and 0.1 mg/L of water during the first seven days. Except for the lowest concentration (0.01 mg/L) mortality rates were greater than 80% from day 8 through 28. Mortality rates for 0.01 mg/L concentrations were 70.4% from days 8‐14, and thereafter exceeded 80% through day 28. The residual activity gradually increased post‐treatment since the granular formulation of pyriproxyfen has a gradual solubility and increases concentration of active ingredient over time. The mortality rates of An. sinensis larvae and pupae eventually reached 100% for the three (0.01, 0.05, 0.1 mg/L) concentrations.