Mom Matters: Diapause Characteristics of Culex pipiens-Culex quinquefasciatus (Diptera: Culicidae) Hybrid Mosquitoes

Journal of Medical Entomology
Megan E MeutiDavid L Denlinger

Abstract

Females of the northern house mosquito, Culex pipiens L., are capable of entering an adult overwintering diapause characterized by arrested ovarian development, enhanced stress tolerance, and elevated lipid stores. In contrast, the southern house mosquito, Culex quinquefasciatus Say, lacks this capacity and is therefore unable to survive the harsh winters found in northern regions of North America. These two species are capable of forming fertile hybrids in the United States, yet the diapause characteristics of these hybrids have not been extensively investigated. We crossed Cx. pipiens from Columbus, OH, with Cx. quinquefasciatus from Vero Beach, FL, and reared F1 hybrids from all mothers separately under diapause-inducing, short-day conditions (a photoperiod of 8:16 [L:D] h) at 18°C. Egg follicle length and lipid content were used to assess the diapause status of hybrids. Diapause incidence of hybrids varied widely for progeny from different mothers of the same species, but hybrids with Cx. pipiens mothers were consistently more prone to enter diapause than hybrids that had Cx. quinquefasciatus mothers. Our results suggest a strong maternal influence on the diapause phenotype and that a high percentage (45-75%) of Cx. pipiens...Continue Reading

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Mar 25, 2014·Journal of Insect Physiology·David S KangCheolho Sim

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Citations

Aug 24, 2019·Journal of the American Mosquito Control Association·Daniel E DawsonAnita K Kurian
Sep 25, 2019·Journal of Medical Entomology·Ilia RochlinTheodore G Andreadis
Aug 14, 2020·Parasites & Vectors·Benjamin J KrajacichTovi Lehmann
Jan 12, 2021·Journal of Insect Physiology·Derek T HuckMegan E Meuti
Jan 23, 2021·Journal of Insect Physiology·Lydia R FyieMegan E Meuti

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