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2. Point-Source and Area-Wide Field Studies of Pyriproxyfen Autodissemination Against Urban Container-Inhabiting Mosquitoes

Author

NAVAL MEDICAL RESEARCH UNIT NO 2 MANILA (PHILIPPINES), Suman, Devi S, Farajollahi, Ary, Healy, Sean, Williams, Gregory M, Wang, Yi, Schoeler, George, Gaugler, Randy, NAVAL MEDICAL RESEARCH UNIT NO 2 MANILA (PHILIPPINES), Suman, Devi S, Farajollahi, Ary, Healy, Sean, Williams, Gregory M, Wang, Yi, Schoeler, George, and Gaugler, Randy

Abstract

Autodissemination of insecticides is a novel strategy for mosquito management. We tested if contaminated Aedes albopictus (Skuse) mosquitoes from a small area treated with commercial formulations(79 gm a.i. pyriproxyfen/ha) using conventional techniques, would disseminate pyriproxyfen over a wider area. Pyriproxyfen showed LC50 = 0.012 ppb for Ae. albopictus. Direct treatment and autodissemination efficacy was measured as a pupal mortality by conducting Ae. albopictus larval bioassay. A tire pile (n = 100 tires) treated by backpack sprayer as a point-source treatment showed higher pupal mortality in 2010 (60.8% for week 0-6) than in 2011 (38.3% for week 0-6). The sentinel containers placed for autodissemination in four compass directions out to 200-400 m from the tire pile showed 15.8% pupal mortality (week 1-6) in the first year, and 1.4% pupal mortality in the second year. No significant difference was detected among the distances and direction for pupal mortality. In area-wide treatments, vegetation was sprayed in checkerboard pattern (3.7% of 105 ha) using backpack sprayer in 2010 and in strips (24.8% of 94 ha) using truck-mounted ultra-low volume (ULV) sprayer in 2011. In both years, the area-wide direct treatment efficacy was lower (30.3% during 2010 and 5.3% in 2011) than point-source treatments. Autodissemination in area-wide plots was higher in 2010 (10.3%) than 2011 ((2.9%). However, area-wide treatments were ineffective on field populations of Ae. albopictus as monitored by using BGS traps. We found accumulation of pyriproxyfen in the week 6 autodissemination containers in both experiments. The differences in autodissemination in 2010 and 2011 can be attributed to higher rainfall in the second year that may have eroded the pyriproxyfen from treatment surfaces and sentinel containers., Published in Acta Tropica v135 p96-103, 2014.

Published
2014

10. Taming a Tiger in the City: Comparison of Motorized Backpack Applications and Source Reduction Against the Asian Tiger Mosquito,Aedes albopictus

Author

Sun, Debin, primary, Williges, Eric, additional, Unlu, Isik, additional, Healy, Sean, additional, Williams, Gregory M., additional, Obenauer, Peter, additional, Hughes, Tony, additional, Schoeler, George, additional, Gaugler, Randy, additional, Fonseca, Dina, additional, and Farajollahi, Ary, additional

Published
2014
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16. Larval Mosquito Habitat Utilization and Community Dynamics of Aedes albopictus and Aedes japonicus (Diptera: Culicidae)

Author

NAVY ENTOMOLOGY CENTER OF EXCELLENCE JACKSONVILLE FL, Bartlett-Healy, Kristen, Unlu, Isik, Obenauer, Peter, Hughes, Tony, Healy, Sean, Crepeau, Taryn, Farajollahi, Ary, Kesavaraju, Banu, Fonseca, Dina, Schoeler, George, NAVY ENTOMOLOGY CENTER OF EXCELLENCE JACKSONVILLE FL, Bartlett-Healy, Kristen, Unlu, Isik, Obenauer, Peter, Hughes, Tony, Healy, Sean, Crepeau, Taryn, Farajollahi, Ary, Kesavaraju, Banu, Fonseca, Dina, and Schoeler, George

Abstract

Aedes albopictus (Skuse) and Ae. japonicus (Theobald) are important container-inhabiting mosquitoes that transmit disease agents, outcompete native species, and continue to expand their range in the United States. Both species deposit eggs in natural and artificial containers and thrive in peridomestic environments. The goal of our study was to examine the types and characteristics of containers that are most productive for these species in the northeastern United States. In total, 306 containers were sampled in urban, suburban, and rural areas of New Jersey. Multiple biotic and abiotic factors were recorded in an attempt to identify variables associated with the productivity of each species. Based on pupal abundance and density of container types, results showed that tires, trash cans and planter dishes were the most important containers for Ae. albopictus, while planter dishes were the most important containers for Ae. japonicus. Container color (black and gray), material (rubber) and type (tires) were correlated with species presence for Ae. albopictus and Ae. japonicus. These factors may play a role in the selection of oviposition sites by female mosquitoes or in the survival of their progeny. Differences in species composition and abundance were detected between areas classified as urban, suburban, and rural. In urban and suburban areas, Ae. albopictus was more abundant in container habitats than Ae. japonicus; however, Ae. japonicus was more abundant in rural areas, and when water temperatures were below 14 C. Our results suggest many variables can influence the presence of Ae. albopictus and Ae. japonicus in container habitats in northeastern United States., Pub. in Journal of Medical Entomology, v49 n4, p813-824, 2012.

Published
2012

20. Area‐wide management of Aedes albopictus . Part 2: Gauging the efficacy of traditional integrated pest control measures against urban container mosquitoes

Author

Fonseca, Dina M, primary, Unlu, Isik, additional, Crepeau, Taryn, additional, Farajollahi, Ary, additional, Healy, Sean P, additional, Bartlett‐Healy, Kristen, additional, Strickman, Daniel, additional, Gaugler, Randy, additional, Hamilton, George, additional, Kline, Daniel, additional, and Clark, Gary G, additional

Published
2013
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30. Larval Mosquito Habitat Utilization and Community Dynamics ofAedes albopictusandAedes japonicus(Diptera: Culicidae)

Author

Bartlett-Healy, Kristen, primary, Unlu, Isik, additional, Obenauer, Peter, additional, Hughes, Tony, additional, Healy, Sean, additional, Crepeau, Taryn, additional, Farajollahi, Ary, additional, Kesavaraju, Banu, additional, Fonseca, Dina, additional, Schoeler, George, additional, Gaugler, Randy, additional, and Strickman, Daniel, additional

Published
2012
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33. Source Reduction Behavior as an Independent Measurement of the Impact of a Public Health Education Campaign in an Integrated Vector Management Program for the Asian Tiger Mosquito

Author

Bartlett-Healy, Kristen, primary, Hamilton, George, additional, Healy, Sean, additional, Crepeau, Taryn, additional, Unlu, Isik, additional, Farajollahi, Ary, additional, Fonseca, Dina, additional, Gaugler, Randy, additional, Clark, Gary G., additional, and Strickman, Daniel, additional

Published
2011
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50. Host Feeding Patterns of Established and Potential Mosquito Vectors of West Nile Virus in the Eastern United States

Author

Apperson, Charles S., primary, Hassan, Hassan K., additional, Harrison, Bruce A., additional, Savage, Harry M., additional, Aspen, Stephen E., additional, Farajollahi, Ary, additional, Crans, Wayne, additional, Daniels, Thomas J., additional, Falco, Richard C., additional, Benedict, Mark, additional, Anderson, Michael, additional, McMillen, Larry, additional, and Unnasch, Thomas R., additional

Published
2004
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