The effects of simulated rainfall on immature population dynamics of Aedes albopictus and female oviposition |
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| Authors: | Hamady Dieng G M Saifur Rahman A Abu Hassan M R Che Salmah Tomomitsu Satho Fumio Miake Michael Boots AbuBakar Sazaly |
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| Institution: | (1) School of Biological Sciences, Universiti Sains Malaysia, 11800 Penang, Malaysia;(2) Faculty of Pharmaceutical Sciences, Fukuoka University, Fukuoka, Japan;(3) Department of Animal and Plant Sciences, University of Sheffield, Sheffield, UK;(4) Department of Medical Microbiology, University of Malaya, Kuala Lumpur, Malaysia |
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| Abstract: | Larvae of Aedes albopictus Skuse typically inhabit natural and artificial containers. Since these larval habitats are replenished by rainfall, Ae. albopictus may experience increased loss of immature stages in areas with high levels of rainfall. In this study, we investigated the
effects of rainfall and container water level on population density, and oviposition activity of Ae. albopictus. In field and laboratory experiments, we found that rainfall resulted in the flushing of breeding habitats. Excess rain negatively
impacted larval and pupal retention, especially in small habitats. When filled with water to overflowing, container habitats
were significantly repellent to ovipositing females. Taken together, these data suggest that rainfall triggers population
loss of Ae. albopictus and related species through a direct detrimental effect (flushing out) and an indirect effect (ovipositional repellency). |
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