Genetic diversity and differentiation of fall webw

Authors: Juan Du Baojia Gao Guona Zhou Aimei Miao

Publish Date: 2009/08/01

Volume: 11, Issue: 3, Pages: 158-163

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Abstract

The molecular variation and genetic relationships among five populations of the fall webworm Hyphantria cunea Drury in China were assessed using microsatellite technology Ten microsatellite primers producing polymorphic bands were used across 300 samples The percentage of polymorphic loci PPB was 9836 the percentage of polymorphic loci in five populations ranged from high to low in the following order Cangzhou population Yantai population Qinhuangdao population Dandong population and Shijiazhuang population The results showed that 3438 of the total genetic variation of the fall webworm G ST occurs among populations while most variation 6562 exists within populations Nei’s genetic distances ranged from 01386 to 03224 Using the unweighted pair group method with arithmetic mean UPGMA Nei’s genetic distances were analyzed by a clustering technique and the dendrogram shows that population differentiation is closely related to the time and geographic origin of the invasion The major factors impacting genetic diversity of fall webworm populations are longitude the plain area ratio annual precipitation latitude and time of invasion The formation of genetic structure is correlated with characteristics of the life history and invasion ecology of the species

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