Details zur Publikation

Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.1111/j.1095-8312.2005.00464.x
Titel (primär) Flies on thistles: support for synchronous speciation?
Autor Brändle, M.; Knoll, S.; Eber, S.; Stadler, J.; Brandl, R.
Quelle Biological Journal of the Linnean Society
Erscheinungsjahr 2005
Department BZF
Band/Volume 84
Heft 4
Seite von 775
Seite bis 783
Sprache englisch
Keywords allozymes; coevolution; molecular clock; phytophagous insects
Abstract Synchronous speciation of hosts and herbivorous insects predicts a congruent topology of host and insect phylogenies and similar evolutionary ages of host and insect taxa. To test these predictions for the specialized herbivorous fly genus Urophora (Diptera: Tephritidae), we used three different approaches. (i) We generated a phylogenetic tree of 11 European Urophora species from allozyme data and constructed a phylogeny of their hosts from published sources. Superimposing the Urophora tree on the host-plant tree we found no evidence for general congruence. (ii) We correlated genetic distances (Nei distances) of the host plants vs. the genetic distances of associated Urophora species. Overall, the relationship was not positive. Nevertheless, for some pairs of Urophora species and host plants genetic distances were in the same order of magnitude. (iii) We collected allozyme data for pairs of thistle taxa and pairs of herbivores on thistles together with independent time estimates. With these data we calibrated a molecular clock. There was a non-linear relationship between phylogenetic age and genetic distance, rendering the dating of deep events in thistle–insect evolution difficult. Nevertheless the derived molecular clock showed that the split of insect taxa lagged behind the split of hosts
dauerhafte UFZ-Verlinkung
Brändle, M., Knoll, S., Eber, S., Stadler, J., Brandl, R. (2005):
Flies on thistles: support for synchronous speciation?
Biol. J. Linnean Soc. 84 (4), 775 - 783 10.1111/j.1095-8312.2005.00464.x