Details zur Publikation

Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.1046/j.1365-294X.1997.00236.x
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Titel (primär) Genetic differentiation of the tephritid fly Urophora cardui in Europe as evidence for its biogeographical history
Autor Eber, S.; Brandl, R.
Quelle Molecular Ecology
Erscheinungsjahr 1997
Department BZF; OESA
Band/Volume 6
Heft 7
Seite von 651
Seite bis 660
Sprache englisch
Abstract

Gaps in the large-scale distribution of the tephritid fly Urophora cardui in Europe have been explained as the results of an ongoing re-immigration from Pleistocene refugia due to a very low dispersal capacity. Following evidence of a much greater dispersal capacity of U. cardui than previously assumed, the pattern of genetic differentiation of 41 populations from 16 European regions was studied using allozyme electrophoresis. In these analyses 18 enzyme systems were scored consistently providing 27 alleles. Allozyme variation indicated high gene flow and low levels of genetic differentiation within and between sampling regions as well as in recently colonized areas. No geographical pattern of heterozygosity or allozyme differentiation could be found matching the previously suggested recent immigration pattern. An observed south-north gradient in allozyme frequencies was interpreted as a geographical cline due to environmental factors. The results corroborate evidence from more recent studies that U. cardui is a highly mobile species which is likely to have repeatedly colonized some suboptimal European regions since the Pleistocene after retreats during ‘little ice ages’. Patterns resulting from postglacial immigration processes are likely to have been long wiped out through high exchange rates.
dauerhafte UFZ-Verlinkung https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=9212
Eber, S., Brandl, R. (1997):
Genetic differentiation of the tephritid fly Urophora cardui in Europe as evidence for its biogeographical history
Mol. Ecol. 6 (7), 651 - 660 10.1046/j.1365-294X.1997.00236.x