Speciation in Western Scrub-Jays, Haldane's rule, and genetic clines in secondary contact.

ABSTRACT:

Background

Haldane's Rule, the tendency for the heterogametic sex to show reduced fertility in hybrid crosses, can obscure the signal of gene flow in mtDNA between species where females are heterogametic. Therefore, it is important when studying speciation and species limits in female-heterogametic species like birds to assess the signature of gene flow in the nuclear genome as well. We studied introgression of microsatellites and mtDNA across a secondary contact zone between coastal and interior lineages of Western Scrub-Jays (Aphelocoma californica) to test for a signature of Haldane's Rule: a narrower cline of introgression in mtDNA compared to nuclear markers.

Results

Our initial phylogeographic analysis revealed that there is only one major area of contact between coast

SUBMITTER: Gowen FC 

PROVIDER: S-EPMC4078322 | biostudies-literature | 2014 Jun

REPOSITORIES: biostudies-literature