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. 2016 Mar:155:51-7.
doi: 10.1016/j.actatropica.2015.12.015. Epub 2015 Dec 29.

Survivorship and fecundity of Culex pipiens pallens feeding on flowering plants and seed pods with differential preferences

Bao-Ting Yu  1 , Yan-Mei Ding  1 , Xiao-Chang Mo  1 , Ning Liu  2 , Hong-Jie Li  1 , Jian-Chu Mo  3
Affiliations

Survivorship and fecundity of Culex pipiens pallens feeding on flowering plants and seed pods with differential preferences

Bao-Ting Yu et al. Acta Trop. 2016 Mar.

Abstract

Adult mosquitoes rely on ingestion of sugar from plants to survive, swarm and mate. Culex pipiens pallens Coguillett is the primary vector of lymphatic filariasis and epidemic encephalitis. Little is known about the effect of feeding on different sugar sources on the survivorship and fecundity of Cx. pipiens pallens. In the present study, newly emerged mosquitoes were exposed to several flowering plant and seed pod species with different olfactory preferences, and the survival times of mosquitoes exposed to these sugar sources were determined. The proportions of mosquitoes that ingested sugar from host plants were investigated by cold anthrone tests. The numbers of eggs per egg raft laid by mosquitoes were compared when they were provided with different sugar sources and one blood meal. The results revealed that feeding on different kinds of sugar sources significantly affected female and male mosquitoes' survival times. Cold anthrone tests indicated that the proportions of sugar-positive mosquitoes from different nutritional regimes within 24h corresponded to the preference rankings of Cx. pipiens pallens to these sugar sources, and rapid declines in the proportions of surviving individuals might be attributed to their insufficient ingestion of sugar from nutritional regimes. Feeding on different sugar sources strongly affected the proportions of engorged mosquitoes, and females that had fed on their preferred sugar sources laid more eggs than mosquitoes provided with less preferred sugar sources. The results would provide insights in developing mosquito control strategies that target the sugar feeding behavior of mosquitoes.

Keywords: Culex pipiens pallens; Fecundity; Longevity; Nutritional regimes; Sugar feeding.

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