Incipient speciation with gene flow on a continental island: Species delimitation of the Hainan Hwamei (Leucodioptron canorum owstoni, Passeriformes, Aves)

Ning Wang, Bin Liang, Jichao Wang, Chia Fen Yeh, Yang Liu, Yanlin Liu, Wei Liang, Cheng Te Yao, Shou Hsien Li

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Because of their isolation, continental islands (e.g., Madagascar) are often thought of as ideal systems to study allopatric speciation. However, many such islands have been connected intermittently to their neighboring continent during recent periods of glaciation, which may cause frequent contact between the diverging populations on the island and continent. As a result, the speciation processes on continental islands may not meet the prerequisites for strictly allopatric speciation. We used multiple lines of evidence to re-evaluate the taxonomic status of the Hainan Hwamei (Leucodioptron canorum owstoni), which is endemic to Hainan, the largest continental island in the South China Sea. Our analysis of mitochondrial DNA and twelve nuclear loci suggests that the Hainan Hwamei can be regarded as an independent species (L. owstoni); the morphological traits of the Hainan Hwamei also showed significant divergence from those of their mainland sister taxon, the Chinese Hwamei (L. canorum). We also inferred the divergence history of the Hainan and Chinese Hwamei to see whether their divergence was consistent with a strictly allopatric model. Our results suggest that the two Hwameis split only 0.2 million years ago with limited asymmetrical post-divergence gene flow. This implies that the Hainan Hwamei is an incipient species and that speciation occurred through ecologically divergent selection and/or assortative mating rather than a strictly allopatric process.

Original languageEnglish
Pages (from-to)62-73
Number of pages12
JournalMolecular Phylogenetics and Evolution
Volume102
DOIs
Publication statusPublished - 2016 Sep 1

Fingerprint

Passeriformes
Gene Flow
Aves
Islands
gene flow
Birds
divergence
China
allopatric speciation
Madagascar
assortative mating
Mitochondrial DNA
mitochondrial DNA
glaciation
Garrulax canorus
incipient speciation
history
Population
loci

Keywords

  • Continental island
  • Incipient speciation
  • Post-divergence gene flow
  • Species delimitation

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Molecular Biology
  • Genetics

Cite this

Incipient speciation with gene flow on a continental island : Species delimitation of the Hainan Hwamei (Leucodioptron canorum owstoni, Passeriformes, Aves). / Wang, Ning; Liang, Bin; Wang, Jichao; Yeh, Chia Fen; Liu, Yang; Liu, Yanlin; Liang, Wei; Yao, Cheng Te; Li, Shou Hsien.

In: Molecular Phylogenetics and Evolution, Vol. 102, 01.09.2016, p. 62-73.

Research output: Contribution to journalArticle

Wang, Ning ; Liang, Bin ; Wang, Jichao ; Yeh, Chia Fen ; Liu, Yang ; Liu, Yanlin ; Liang, Wei ; Yao, Cheng Te ; Li, Shou Hsien. / Incipient speciation with gene flow on a continental island : Species delimitation of the Hainan Hwamei (Leucodioptron canorum owstoni, Passeriformes, Aves). In: Molecular Phylogenetics and Evolution. 2016 ; Vol. 102. pp. 62-73.
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AU - Yeh, Chia Fen

AU - Liu, Yang

AU - Liu, Yanlin

AU - Liang, Wei

AU - Yao, Cheng Te

AU - Li, Shou Hsien

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