期刊
MEDICAL AND VETERINARY ENTOMOLOGY
卷 17, 期 2, 页码 195-204出版社
WILEY
DOI: 10.1046/j.1365-2915.2003.00424.x
关键词
Aedes aegypti; container breeding; dengue vector; mosquito larvae; oviposition behaviour; relatedness; RFLP; skip-oviposition; vector biology; yellow fever mosquito; Trinidad; West Indies
资金
- FIC NIH HHS [TW 00800] Funding Source: Medline
- NIAID NIH HHS [AI 33127, AI 45123, 2T32 AI 07030] Funding Source: Medline
This study examines the use of codominant restriction fragment length polymorphism (RFLP) markers to estimate the number of sibling families found within and among oviposition sites used by the mosquito Aedes aegypti (L) (Diptera: Culicidae). Estimates were made using pairwise relatedness (r (xy)) calculations based on alleles shared between individuals. Genotypes for eight laboratory mosquito families were determined at six RFLP loci and the observed allele frequencies were used to generate simulated distributions of r (xy) from full-sibling and unrelated pairs of individuals. The midpoint (mp) between the means of the pairwise r(xy) distributions was used to discriminate full-sibling families from unrelated families. Clusters of individuals with r(xy) values higher than the mp value were grouped as putative sibling families. This method was tested by calculating actual r(xy) for all pairwise comparisons of the known laboratory full-sibling and paternal half-sibling families, followed by upgma cluster analysis to group sibling families. The technique was then used for sibling estimations on wild caught mosquitoes collected at three locations in Trinidad, West Indies. From field populations, 35 families were estimated among 122 individuals tested with an average of 6.2 families per container. Members of 19 predicted families clustered as groups across multiple containers, providing molecular evidence for skip-oviposition behaviour in Ae. aegypti females, whereby individual females oviposit in more than one container.
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