Dispersal and oviposition of laboratory-reared gravid females of Toxorhynchites moctezuma in an arid urban area of Sonora, Mexico
| Autor: | María E. Dórame-Navarro, J. Andrés Alvarado-Castro, A. Amalia Félix-Torres, Alberto Macías-Duarte |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Oviposition
Biological pest control Aedes aegypti Biology Urban area Urbanization parasitic diseases Animals Humans Cities Pest Control Biological Mexico Ecology Evolution Behavior and Systematics geography geography.geographical_feature_category Behavior Animal Ecology fungi Public Health Environmental and Occupational Health General Medicine biology.organism_classification Arid Culicidae Insect Science Vector (epidemiology) Toxorhynchites Biological dispersal Female Desert Climate |
| Zdroj: | Journal of the American Mosquito Control Association. 25(4) |
| ISSN: | 8756-971X |
| Popis: | Dengue is a serious public health problem worldwide. Biological control of its vector, Aedes aegypti, remains a feasible option in light of increasing urbanization and insecticide resistance. We studied the dispersal and oviposition activity of Toxorhynchites moctezuma in a dengue-endemic urban area in SSonora, Mexico, to provide information about the potential of Toxorhynchites as a control agent for Ae. aegypti in arid areas. We released 210 and 100 laboratory-reared gravid females of Tx. moctezuma in 2 city blocks during the summer and fall of 1993. We set 3 1-liter containers and 1 car tire as sentinel traps at each of 10 backyards within each city block. Spatial and temporal patterns of dispersal and oviposition activity differed between city blocks and between releases. However, a Cox regression analysis showed no significant difference in the per-day probability of Tx. moctezuma oviposition events in sentinel traps between summer and fall releases. Per-day oviposition probability was nearly 5 times greater for sentineltraps that contained larvae of Ae. aegypti, suggesting a high specificity of the predator for its prey. The proportion of sentinel traps positive for Tx. moctezuma eggs did not increase substantially after the 8th day piost-release, reaching 66% and 23% for sentinel traps with and without Ae. aegypti larvae, respectively. |
| Databáze: | OpenAIRE |
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