« Previous AbstractExploiting the chemical ecology of mosquito oviposition behavior in mosquito surveillance and control: a review    Next AbstractEffects of orchard host plants (apple and peach) on development of oriental fruit moth (Lepidoptera: Tortricidae) »

J Med Entomol

Title:		The Influence of Larval Stage and Density on Oviposition Site-Selection Behavior of the Afrotropical Malaria Mosquito Anopheles coluzzii (Diptera: Culicidae)
Author(s):		Mwingira VS; Spitzen J; Mboera LEG; Torres-Estrada JL; Takken W;
Address:		"National Institute for Medical Research, Tanga, Tanzania. Laboratory of Entomology, Wageningen University & Research, Wageningen, The Netherlands. Southern African Centre for Infectious Disease Surveillance, Chuo Kikuu, Morogoro, Tanzania. Centro de Investigacion de Paludismo, Instituto Nacional de Salud Publica (INSP), Tapachula, Chiapas, Mexico"
Journal Title:		J Med Entomol
Year:		2020
Volume:		57
Issue:		3
Page Number:		657 - 666
DOI:		10.1093/jme/tjz172
ISSN/ISBN:		1938-2928 (Electronic) 0022-2585 (Print) 0022-2585 (Linking)
Abstract:		"In the selection of oviposition sites female mosquitoes use various cues to assess site quality to optimize survival of progeny. The presence of conspecific larvae influences this process. Interactive effects of oviposition site selection were studied in the malaria mosquito Anopheles coluzzii Coetzee & Wilkerson in dual- and no-choice assays, by exposing single gravid mosquitoes to oviposition cups containing 1) larvae of different developmental stages, 2) larvae-conditioned water (LCW), and 3) cups where visual cues of conspecific larvae were absent. Early-stage conspecific larvae had a positive effect on the oviposition response. By contrast, late stages of conspecific larvae had a negative effect. Oviposition choice was dependent on larval density. Moreover, in oviposition cups where larvae were hidden from view, late-stage larvae had a significant negative effect on oviposition suggesting the involvement of olfactory cues. LCW had no effect on oviposition response, indicating involvement of chemicals produced by larvae in vivo. It is concluded that the presence of larvae in a breeding site affects the oviposition response depending on the development stage of the larvae. These responses appear to be mediated by olfactory cues emitted by the larval habitat containing live larvae, resulting in the enhanced reproductive fitness of the females"
Keywords:		Animals *Anopheles Female Larva *Mosquito Vectors *Oviposition Population Density Anopheles coluzzii aggregation larval pheromones olfactory cues oviposition;
Notes:		"MedlineMwingira, Victor S Spitzen, Jeroen Mboera, Leonard E G Torres-Estrada, Jose L Takken, Willem eng Research Support, Non-U.S. Gov't England 2019/10/21 J Med Entomol. 2020 May 4; 57(3):657-666. doi: 10.1093/jme/tjz172"