Microgeographic and temporal genetic variation in populations of the Bluetongue virus vector Culicoides variipennis (Diptera : Ceratopogonidae)
In: Journal of medical entomology, Jg. 29 (1992), Heft 3, S. 384-392
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academicJournal
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Zugriff:
Seven Colorado populations of the bluetongue virus vector Culicoides variipennis (Coquillett) were analyzed for genetic variation at 19-21 isozyme loci. Permanent populations, which overwinter as larvae, showed little temporal genetic change at 19 loci. PGD and MDH showed seasonal changes in gene frequencies, attributable to selection at two permanent populations. Two temporary populations showed low heterozygosity compared with permanent populations. Independent estimates of gene flow, calculated using FST and the private allele method, were Nm*=2.15 and 6.95, respectively. Colorado C. variipennis permanent populations showed high levels of gene flow which prevented significant genetic differentiation due to genetic drift. Temporary populations showed significant gene frequency differences from nearby permanent populations due to the «founder effect» associated with change colonization.
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Microgeographic and temporal genetic variation in populations of the Bluetongue virus vector Culicoides variipennis (Diptera : Ceratopogonidae)
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Autor/in / Beteiligte Person: | TABACHNICK, W. J |
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Zeitschrift: | Journal of medical entomology, Jg. 29 (1992), Heft 3, S. 384-392 |
Veröffentlichung: | Lanham, MD: Entomological Society of America, 1992 |
Medientyp: | academicJournal |
Umfang: | print, 20 ref |
ISSN: | 0022-2585 (print) |
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