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Rodent Feed-Through Insecticides Used to Control Sand Flies-Registration and Field Work Challenge Richard Poche’, Genesis Labs Wellington, Colorado
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The Problem Cutaneous Leishmaniasis
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The Process Screen compounds that are efficacious against larval/adult sand flies Develop formulation(s) that are species specific Collect data for EPA Section 3 registration application –Product chemistry –Product performance –Environmental safety –Regulatory hurtles
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Rodent Species + Vector Fat sand rat Psammomys obesus Jird Meriones spp Sand fly species –Phlebotomus papatasi
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Leishmania major ecology Sand flySand ratSaltbush Promastigote Amastigote
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Bait Development Rodent food habits in the wild Laboratory screening of potential bait ingredients Attractants Bait type –Grain –Pellet –Gel ? Pilot field test Large-scale field test
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Colorado
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Lab Studies with Fleas on Rodents
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Mortality of P. papatasi 1st instar larvae due to imidacloprid
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Mortality of P. papatasi 1st instar larvae due to imidacloprid: effect of host sex
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Israel
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Tunisia
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Lab test using 0.025% imidacloprid bait presented to the jird Meriones shawii
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Efficacy of products on Phlebotomus argentipes larvae when fed Rattus rattus feces collected after feed-through
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Fipronil 0.015% as a feed-through for use against P. argentipes Percentage Days
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Outcome
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Field Rodent Flea Control Bait Targets ground squirrels- Spermophilus spp. Oropsylla idahoensis, Hoplosyllus anomalus – and other species Soon to add prairie dogs Cynomys spp. and O. hirsuta Borchert, J. et al. 2009. J. Medical Entomology. In press.
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Feed-through experiments with P. argentipes Ivermetcin Ivermectin + parziquantel Diflubenzuron Fipronil Flumethrin Fenbendazole Doramectin Moxidectin Beta-cyfluthrin Garlic Tetrachlorvinphos
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Plans for 2010-11 Continue screening candidate compounds Conduct field trials in Tunisia, Israel, and Egypt Develop data package for selected compounds for EPA approval Conduct finalized testing using Good Laboratory Practice Standards
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Acknowledgement This research was funded by the Deployed War-Fighter Protection (DWFP) Research Program, funded by the US Department of Defense through the Armed Forces Pest Management Board (AFPMB)
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Acknowledgements Many people who assisted with the study in some way: Ed Rowton, Gideon Wasserberg, David Miller, David Poche, Marcus O’Bryon, Elyes & Efm Zioua, Ruti Berger, Walter Reed Army Institute of Research, Ben-Gurion University of the Negev, Israel, Pasteur Institute, Tunisia
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