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1 October 2012 Potential Efficacy of Olyset Mosquito Netting Against Calliphora nigribarbis (Diptera: Calliphoridae) Invasion Into Livestock Barns
Osamu Komagata, Shinji Kasai, Mutsuo Kobayashi, Takashi Tomita
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Abstract

Calliphora nigribarbis Vollenhoven is a possible mechanical transmitter of highly pathogenic avian influenza. Based on laboratory tests, we evaluated the efficacy of a long-lasting permethrin-treated mosquito netting, known as the Olyset net, for the prevention of this species entering livestock barns. Flies were trapped in Olyset net cages, and two statistics for knockdown and lethal efficacies were obtained. Median knockdown time in the cage (KT50) was estimated to be 341 s for females, and median lethal time after exposure to the mesh (LT50) was estimated to be 30 s and <15 s for females and males, respectively. These LT50s were faster than those measured for anesthetized stationary flies brought in contact with the Olyset net (>120 s for both sexes), indicating that a fly's spontaneous contact with the Olyset net accelerates insecticide adhesion. The rate of permethrin adhesion to C. nigribarbis after its spontaneous contact with the Olyset net was estimated to be 3.7 ng/s for females, in reference to the 50% lethal dose (LD50) value (112 ng/female), which was obtained from the topical application bioassay of permethrin. The lethality exhibited after brief spontaneous contact with the Olyset net suggests its potential utility in poultry farms against C. nigribarbis invasion.

© 2012 Entomological Society of America
Osamu Komagata, Shinji Kasai, Mutsuo Kobayashi, and Takashi Tomita "Potential Efficacy of Olyset Mosquito Netting Against Calliphora nigribarbis (Diptera: Calliphoridae) Invasion Into Livestock Barns," Journal of Economic Entomology 105(5), 1796-1800, (1 October 2012). https://doi.org/10.1603/EC12036
Received: 25 January 2012; Accepted: 1 July 2012; Published: 1 October 2012
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KEYWORDS
blow fly
Calliphora nigribarbis
highly pathogenic avian influenza
insecticide-treated netting screen
permethrin
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