NDLI: Regulation of Oviposition in Anopheles gambiae s.s.: Role of Inter- and Intra-Specific Signals

Content Provider	Springer Nature Link
Author	Sumba, Leunita A. Ogbunugafor, C. Brandon Deng, Arop L. Hassanali, Ahmed
Copyright Year	2008
Abstract	Females of Anopheles gambiae Giles normally oviposit in a large number of fresh, small, sunlit, and spatially spread temporary pools. Such pools are associated with lower levels of predation compared to large, longer-lasting habitats. We compared oviposition levels on preferred (water collected from natural anopheline larval habitats) and non-preferred (distilled water) aqueous substrates by gravid females that contained different densities of conspecific eggs or early and late instar larvae. The presence of conspecific larvae, but not eggs, had a positive or negative effect on the ovipositional responses of gravid An. gambiae females, depending on the quality (preferred or non-preferred by the mosquito) of the oviposition water and the density of larvae. Presence of larvae, at all densities, in distilled water deterred oviposition. However, in natural anopheline pool water, a low density of larvae increased oviposition, whereas a higher density inhibited oviposition. Our results suggest that two signals produced by this mosquito may be involved in regulating oviposition: a volatile pheromone emitted by conspecific larvae, which augments the effect of a volatile signal emitted by preferred habitats, and a non-olfactory cue associated with high densities of larvae that deters oviposition.
Starting Page	1430
Ending Page	1436
Page Count	7
File Format	PDF
ISSN	00980331
Journal	Journal of Chemical Ecology
Volume Number	34
Issue Number	11
e-ISSN	15731561
Language	English
Publisher	Springer-Verlag
Publisher Date	2008-10-16
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Anopheles gambiae Giles Oviposition Intra-specific signals Larval pheromone Agriculture Biological Microscopy Entomology Biochemistry Ecology
Content Type	Text
Resource Type	Article
Subject	Medicine Biochemistry Ecology, Evolution, Behavior and Systematics

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