Reduced song complexity in founder populations of a widely distributed songbird

Reduced vocal diversity in founder populations of songbirds is particularly well described in congeners and conspecifics introduced to remote islands but has rarely been examined in species that have been introduced to both island and mainland systems across an expansive geographical range. We exami...

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Bibliographic Details
Published inIbis (London, England) Vol. 161; no. 2; pp. 435 - 440
Main Authors Hill, Samuel D., Pawley, Matthew D.M.
Format Journal Article
LanguageEnglish
Published Oxford Blackwell Publishing Ltd 01.04.2019
Subjects
Acridotheres tristis
Birds
Common Myna
Complexity
Congeners
Conspecifics
founder effect
Introduced species
Populations
Song
Songbirds
vocal diversity
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Summary:Reduced vocal diversity in founder populations of songbirds is particularly well described in congeners and conspecifics introduced to remote islands but has rarely been examined in species that have been introduced to both island and mainland systems across an expansive geographical range. We examined male between‐ and within‐song complexity variations between founder and native populations of the widely distributed Common Myna Acridotheres tristis and predicted reduced complexity within individuals from founder populations. The percentage of unique songs within a repertoire and within‐song complexity were significantly lower in Mynas from founder populations. This reduced song complexity suggests that vocal founder effects may be exhibited in both island and mainland founder populations.
ISSN:0019-1019
1474-919X
DOI:10.1111/ibi.12692