Unidirectional spread of secondary sexual plumage traits across an avian hybrid zone

Thomas John Parsons, Storrs L. Olson, Michael J. Braun

Research output: Contribution to journalArticle

107 Scopus citations

Abstract

Theory predicts that traits under positive selection can rapidly cross a hybrid zone in spite of a substantial barrier to neutral gene flow between hybridizing taxa. An avian hybrid zone between Manacus candei (white-collared manakin) and M. vitellinus (golden-collared manakin) is reported here that displays an unusual pattern of noncoincident clines. Male secondary sexual traits of M. vitellinus have spread into populations that are genetically and morphometrically like M. candei. These birds have a lek breeding system in which male mating success is highly skewed, suggesting that sexual selection is driving male sexual traits across the zone.

Original languageEnglish (US)
Pages (from-to)1643-1646
Number of pages4
JournalScience
Volume260
Issue number5114
DOIs
StatePublished - Jan 1 1993

All Science Journal Classification (ASJC) codes

  • General

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