University of Wyoming
Browse
FACW_ZOO_2003_19385129_McDonald_David.pdf (9.06 MB)
Download file

Microsatellite Dna Evidence for Gene Flow in Neotropical Lek-Mating Long-Tailed Manakins

Download (9.06 MB)
journal contribution
posted on 2021-11-15, 21:32 authored by David McDonald
I genotyped lek-mating Long-tailed Manakins (Chiroxiphia linearis) at Monteverde and Santa Rosa, Costa Rica, 115 km apart. Cavalli-Sforza distance was 0.04, DLR was 0.18, and RST and ϴ were both 0.02. Bayesian clustering analysis indicated that both populations were part of a single cluster rather than from distinct clusters. I present a binomial test for probability of allelic absence as a function of sample size. Genotypic likelihood tests assigned 50% of Monteverde birds to Santa Rosa, versus 26% of Santa Rosa birds to Monteverde. Two lines of evidence supported the idea of asymmetric gene flow up the elevational gradient from Santa Rosa to Monteverde. Low differentiation at this spatial scale, despite intense sexual selection, suggests that sexual selection alone is unlikely to promote rapid divergence leading to speciation. Reduced gene flow, produced by geographic barriers or behavioral factors, may also be required.

History

ISO

eng

Language

English

Publisher

University of Wyoming. Libraries

Journal title

Condor

Collection

Faculty Publication - Zoology and Physiology

Department

  • Library Sciences - LIBS

Usage metrics

    Zoology & Physiology

    Licence

    Exports