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1 July 2015 Response of Lucilia sericata (Diptera: Calliphoridae) to Screwworm Oviposition Attractant
M. F. Chaudhury, J. J. Zhu, S. R. Skoda
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The sheep blowfly, Lucilia sericata Meigen (Diptera: Calliphoridae), causes sheep myiasis in various parts of the world. Female flies are attracted to sheep following various olfactory cues emanating from the sheep's body, and oviposit on suitable substrates on sheep ultimately causing myiasis. Earlier workers attempted to reduce fly population in the field, with some success, using traps baited with various attractants. This research was conducted to determine if L. sericata would respond to a recently developed synthetic attractant that has attracted gravid screwworms, Cochliomyia hominivorax Coquerel, and stimulated them to oviposit. Results of the laboratory bioassays demonstrated that gravid females L. sericata were attracted to substrates treated with the synthetic screwworm attractant composed of five compounds—dimethyl disulfide, dimethyl trisulfide, phenol, p-cresol, and indole. Tests with various combinations of these compounds suggest that the sulfur compounds and indole are the most important compounds to elicit attraction and stimulate oviposition, while phenol and p-cresol may have minor roles. Semiochemical baits based on these compounds may be useful in the field to trap gravid L. sericata.

Published by Oxford University Press on behalf of Entomological Society of America 2015. This work is written by US Government employees and is in the public domain in the US.
M. F. Chaudhury, J. J. Zhu, and S. R. Skoda "Response of Lucilia sericata (Diptera: Calliphoridae) to Screwworm Oviposition Attractant," Journal of Medical Entomology 52(4), 527-531, (1 July 2015).
Received: 12 September 2014; Accepted: 24 April 2015; Published: 1 July 2015

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dimethyl disulfide
dimethyl trisulfide
insect trap
sheep blowfly
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