ArticleParasites & vectors2026
Detritus and larval competition influence phenotypic traits, nutrient stoichiometry, and vector competence for dengue virus in Aedes aegypti.
Article in Parasites & vectors, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundAedes aegypti is the primary vector of dengue virus (DENV), a major arboviral disease affecting human health. Variation in detritus inputs and larval competition in containers where the species develop can influence female Ae. aegypti phenotypic traits, nutrient content (carbon, nitrogen, C:N ratio), and elemental isotopes (δ
methodsFemale Ae. aegypti were reared under simulated urban detritus levels (low, medium, and high) and larval intra- (30:0 and 60:0) and interspecific (30:30 and 60:60) competition with Ae. mediovittatus (Ae. aegypti: Ae. mediovittatus). Aedes aegypti were offered a DENV-1-infected bloodmeal. Transmission assays were conducted, followed by assessment of susceptibility to infection, disseminated infection, and transmission rates. Body nutrient composition and isotope values were measured and analyzed in relation to phenotypic traits and vector competence for DENV-1, with male body nutrient profiles used as proxies for females where sample sizes were limited.
resultsLonger development time and reduced wing length in Ae. aegypti were associated with low detritus. Wing length increased under interspecific competition with Ae. mediovittatus but decreased under intraspecific competition. Higher δ
conclusionsThis research underscores the importance of larval crowding and nutritional availability experienced during the immature stages of Ae. aegypti on adult nutrient stoichiometry and DENV-1 infection. These findings suggest the potential use of δ
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