Laboratory and field evaluation of the efficacy of four insecticides for Aedes vigilax (Diptera: Culicidae) and toxicity to the nontarget shrimp Leander tenuicornis (Decapoda: Palaemonidae)

Brown, Michael D., Thomas, Darran, Mason, Paul, Greenwood, Jack G. and Kay, Brian H. (1999) Laboratory and field evaluation of the efficacy of four insecticides for Aedes vigilax (Diptera: Culicidae) and toxicity to the nontarget shrimp Leander tenuicornis (Decapoda: Palaemonidae). Journal of Economic Entomology, 92 5: 1045-1051.


Author Brown, Michael D.
Thomas, Darran
Mason, Paul
Greenwood, Jack G.
Kay, Brian H.
Title Laboratory and field evaluation of the efficacy of four insecticides for Aedes vigilax (Diptera: Culicidae) and toxicity to the nontarget shrimp Leander tenuicornis (Decapoda: Palaemonidae)
Formatted title
Laboratory and field evaluation of the efficacy of four insecticides for Aedes vigilax (Diptera: Culicidae) and toxicity to the nontarget shrimp Leander tenuicornis (Decapoda: Palaemonidae)
Journal name Journal of Economic Entomology   Check publisher's open access policy
ISSN 0022-0493
0022-0493
Publication date 1999-10
Sub-type Article (original research)
Volume 92
Issue 5
Start page 1045
End page 1051
Total pages 7
Place of publication Baltimore, MD, U.S.A.
Publisher Journal of Economic Entomology
Collection year 1999
Language eng
Subject C1
770404 Control of pests and exotic species
Formatted abstract
Laboratory and field evaluations were conducted in southeastern Queensland, Australia, to determine the toxicities of 2 organophosphate compounds (temephos and pirimiphos-methyl), an insect growth regulator (s-methoprene), and Bacillus thuringiensis variety israelensis de Barjac (Bti) to Aedes vigilax (Skuse), an Australian saltmarsh mosquito vector of Ross River virus. The toxicity of these compounds to Leander tenuicornis Say, a cohabiting nontarget shrimp species, was also assessed. s-Methoprene and Bti were found to be the most selective for Ae. vigilax, with selectivity ratios (LC95 nontarget/LC95 target) of 255,000 and 38,000, respectively. In contrast, selectivity ratios of 13 and 0.01 were calculated for temephos and pirimiphos-methyl, respectively. As predicted by the laboratory studies, the field applications of s-methoprene and Bti were highly effective against Ae. vigilax, while not affecting L. tenuicornis survival. In contrast, although temephos and pirimiphos-methyl were both effective against Ae. vigilax, these products also killed 100% of caged L. tenuicornis. s-Methoprene and Bti did not affect water quality, whereas temephos and pirimiphos-methyl significantly influenced pH and turbidity. Accordingly, based on the high selectivity ratios, excellent field efficacy, and lack of influence on abiotic water characteristics, s-methoprene and Bti were ideal for insecticide control of Ae. vigilax in Australian saltmarsh pools.
Q-Index Code C1
Additional Notes Published under "Ecotoxicology".

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Medicine Publications
 
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Created: Tue, 10 Jun 2008, 13:47:22 EST