title: Evidence of limited polyandry in a natural population of Aedes aegypti.
abstract: The mosquito Aedes aegypti is a vector of yellow fever, dengue, and chikungunya. Control of the insect is crucial to stop the spread of dengue and chikungunya, so it is critically important to understand its mating behavior. Primarily, based on laboratory behavior, it has long been assumed that Ae. aegypti females mate once in their lifetime. However, multiple inseminations have been observed in semi-field and laboratory settings, and in closely related species. Here, we report the first evidence of polyandry in a natural population of Ae. aegypti. Female Ae. aegypti were captured around the New Orleans, LA, metropolitan area. They were offered a blood meal and allowed to lay eggs, which were reared to the third-instar larval stage. A parentage analysis using four microsatellite loci was performed. Out of 48 families, 3 showed evidence of multiple paternity. An expanded analysis of these three families found that one family group included offspring contributed by three fathers, and the other two included offspring from two fathers. This result establishes that polyandry can occur in a small proportion of Ae. aegypti females in a natural setting. This could complicate future genetic control efforts and has implications for sampling for population genetics.
authors: Department of Ecology and Evolution, Yale University, New Haven, Connecticut; School of Public Health and Tropical Medicine, Tulane University, New Orleans, Louisiana joshua.richardson@yale.edu.
authors: Joshua B
authors: JB
authors: Richardson
authors: Department of Ecology and Evolution, Yale University, New Haven, Connecticut; School of Public Health and Tropical Medicine, Tulane University, New Orleans, Louisiana.
authors: Samuel B
authors: SB
authors: Jameson
authors: Department of Ecology and Evolution, Yale University, New Haven, Connecticut; School of Public Health and Tropical Medicine, Tulane University, New Orleans, Louisiana.
authors: Andrea
authors: A
authors: Gloria-Soria
authors: Department of Ecology and Evolution, Yale University, New Haven, Connecticut; School of Public Health and Tropical Medicine, Tulane University, New Orleans, Louisiana.
authors: Dawn M
authors: DM
authors: Wesson
authors: Department of Ecology and Evolution, Yale University, New Haven, Connecticut; School of Public Health and Tropical Medicine, Tulane University, New Orleans, Louisiana.
authors: Jeffrey
authors: J
authors: Powell
mesh_terms: D000330:Aedes / Q000235:genetics / Q000502:physiology*; D000818:Animals; D005260:Female; D007303:Insect Vectors / Q000235:genetics / Q000502:physiology*; D007814:Larva / Q000235:genetics*; D008297:Male; D018895:Microsatellite Repeats / Q000235:genetics; D012726:Sexual Behavior, Animal