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Comparison of Laboratory Colonies and Field Populations of Tamarixia radiata, an Ectoparasitoid of the Asian Citrus Psyllid, Using Internal Transcribed Spacer and Cytochrome Oxidase Subunit I DNA Sequences

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The genetic diversity of Tamarixia radiata Waterston (Hymenoptera: Eulophidae) laboratory colonies derived from collections in China, northern Vietnam, Pakistan, and a mixed colony from Taiwan and southern Vietnam was evaluated using the internal transcribed spacer (ITS) region 1, ITS-2, and the 5′ end of the cytochrome oxidase subunit I gene. The strains share the same ITS sequence, consistent with the morphological hypothesis that the collections represent a single species. The COI marker was variable and could distinguish the northern Vietnam and Pakistan colonies from each other and from the other colonies. Comparison of COI sequences from field-collected populations of Puerto Rico, Guadeloupe, and Texas indicates that Florida is not a likely source of the introduction into Puerto Rico but is a likely source of the introduction into Texas.
Barr, N.B. , Hall, D.G. , Weathersbee, A.A. III , Nguyen, R. , Stansly, P. , Qureshi, J.A. , Flores, D.
Includes references
Journal of economic entomology 2009 Dec., v. 102, no. 6
Entomological Society of America
Journal Articles, USDA Authors, Peer-Reviewed
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