Interspecific Larval Competition Differentially Impacts Adult Survival in Dengue Vectors

Journal of Medical Entomology
Barry W AltoSara Ortiz

Abstract

Mosquitoes often experience intraspecific and interspecific competition among larvae attributable to high densities and nutrient limitation, especially container mosquitoes including Aedes aegypti (L.) and Aedes albopictus (Skuse). Density-dependent effects on larvae impact adult production and adult traits that influence transmission of arboviruses. To improve our understanding of the mechanisms by which density-dependence influences transmission and identify species-specific traits, we tested the hypotheses: 1) Competitive asymmetry in favor of Ae. albopictus over Ae. aegypti translates to altered adult female survival, and 2) Ae. aegypti adult females are more resistant to life-shortening effects of low-humidity conditions than Ae. albopictus. We gauged the relative impact of inter- and intraspecific larval competition on adult survival in high- and low-humidity regimes (77 and 44% relative humidity, respectively). For Ae. albopictus, intraspecific but not interspecific competition usually reduced adult survival under both humidity regimes. For Ae. aegypti, both intraspecific and interspecific competition reduced adult survival. Ae. albopictus adult survival was minimally influenced by interspecific competition with Ae. aegy...Continue Reading

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Citations

Dec 3, 2015·Journal of Medical Entomology·Silvano DanielsDonald A Yee
Feb 13, 2016·PLoS Neglected Tropical Diseases·Barry W Alto, Cynthia C Lord
Oct 11, 2017·PLoS Neglected Tropical Diseases·Suellen de OliveiraRafael Maciel de Freitas
Nov 16, 2018·PloS One·Kurt Steinwascher
Apr 9, 2020·Journal of Medical Entomology·Eileen H Jeffrey GutiérrezGoggy Davidowitz
May 5, 2018·Parasites & Vectors·Marissa K GrossmanGonzalo M Vazquez-Prokopec
Oct 5, 2019·Journal of Medical Entomology·Grace KatzShannon L LaDeau
Nov 17, 2019·International Journal of Environmental Research and Public Health·Paul T LeisnhamShannon L LaDeau
Feb 12, 2017·Annals of the New York Academy of Sciences·Talya ShragaiLaura C Harrington
Nov 23, 2021·PLoS Computational Biology·Melody WalkerLauren M Childs

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