Hybridization associated with cycles of ecological succession in a passerine bird

Renee A Duckworth, Georgy A. Semenov

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Identifying the diversity of contexts that can lead to hybridization is important for understanding its prevalence and dynamics in natural populations. Despite the potential of ecological succession to dramatically alter species co-occurrence and abundances, it is unknown whether it directly promotes hybridization and, if so, has long-lasting consequences. Here, we summarize 30 years of survey data across 10 populations to show that in western and mountain bluebirds, heterospecific pairing occurs during repeatable and transient colonization events at the early stages of species turnover. Despite mixed pairing occurring only during early succession, genetic data showed presence of hybrids at both early and late successional stages. Moreover, hybrids showed novel patterns of variation in morphology and behavior, emphasizing that even ephemeral contexts for hybridization can have important evolutionary consequences. Our results suggest that because ecological succession often brings together closely related competitors in disparate numbers but lasts for only a brief period of time, it may be a widespread but underappreciated context for hybridization.

Original languageEnglish (US)
Pages (from-to)E94-E105
JournalAmerican Naturalist
Volume190
Issue number4
DOIs
StatePublished - Oct 1 2017

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ecological succession
passerine
hybridization
bird
birds
turnover
colonization
mountains
mountain

Keywords

  • Competition
  • Ecological succession
  • Hybridization
  • Population size
  • Sialia
  • Species replacement

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics

Cite this

Hybridization associated with cycles of ecological succession in a passerine bird. / Duckworth, Renee A; Semenov, Georgy A.

In: American Naturalist, Vol. 190, No. 4, 01.10.2017, p. E94-E105.

Research output: Contribution to journalArticle

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