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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
- Barr, N.B., Hall, D.G., Weathersbee, A.A. III, Nguyen, R., Stansly, P., Qureshi, J.A., Flores, D.
- Journal of economic entomology 2009 v.102 no.6 pp. 2325
- insect pests, Diaphorina citri, plant pests, citrus fruits, greening disease, insect vectors, insect control, biological control, parasitoids, ectoparasites, Tamarixia, strains, genetic variation, insect genetics, genes, cytochrome-c oxidase, internal transcribed spacers, genetic markers, evolution, reproductive isolation, geographical variation, geographical distribution, biological control agents
- 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.