Evolutionary Applications (2010) 3, 319-339

Thaung Hlaing, Willoughby Tun-Lin, Pradya Somboon, Duong Socheat, To Setha, Sein Min, Sein Thaung, Okorie Anyaele, Babaranda De Silva, Moh Seng Chang, Anil Prakash, Yvonne Linton and Catherine Walton (2010)
Spatial genetic structure of Aedes aegypti mosquitoes in mainland Southeast Asia
Evolutionary Applications 3 (4), 319-339
Abstract: Aedes aegypti mosquitoes originated in Africa and are thought to have spread recently to Southeast Asia, where they are the major vector of dengue. Thirteen microsatellite loci were used to determine the genetic population structure of A. aegypti at a hierarchy of spatial scales encompassing 36 sites in Myanmar, Cambodia and Thailand, and two sites in Sri Lanka and Nigeria. Low, but significant, genetic structuring was found at all spatial scales (from 5 to >2000 km) and significant FIS values indicated genetic structuring even within 500 m. Spatially dependent genetic-clustering methods revealed that although spatial distance plays a role in shaping larger-scale population structure, it is not the only factor. Genetic heterogeneity in major port cities and genetic similarity of distant locations connected by major roads, suggest that human transportation routes have resulted in passive long-distance migration of A. aegypti. The restricted dispersal on a small spatial scale will make localized control efforts and sterile insect technology effective for dengue control. Conversely, preventing the establishment of insecticide resistance genes or spreading refractory genes in a genetic modification strategy would be challenging. These effects on vector control will depend on the relative strength of the opposing effects of passive dispersal.
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Link to article at publishers website
Database assignments for author(s): Pradya Somboon, A. Prakash, Yvonne-Marie Linton

Research topic(s) for pests/diseases/weeds:
molecular biology - genes

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Aedes aegypti		Cambodia
	Aedes aegypti		Myanmar
	Aedes aegypti		Sri Lanka
	Aedes aegypti		Thailand
	Aedes aegypti		Nigeria