Advanced

Song divergence between subspecies of reed bunting is more pronounced in singing styles under sexual selection

Gordinho, Luís de Oliveira; Matheu, Eloisa; Hasselquist, Dennis LU and Neto, Julio LU (2015) In Animal Behaviour 107. p.221-231
Abstract
Song divergence between populations of a species can lead to reproductive isolation and speciation. However, birds may have different singing styles used in distinct social contexts, and songs of each style may change at different rates over time and space. Here, we tested whether song divergence between subspecies of reed bunting, Emberiza schoeniclus, differs with singing style, by comparing song traits of its three singing styles among three subspecies breeding in northern and western Europe. We show that the two singing styles under sexual selection (dawn and fast songs, related to obtaining extrapair and social mates, respectively) diverged significantly more than the slow songs (used as an all-clear signal to nest- attending social... (More)
Song divergence between populations of a species can lead to reproductive isolation and speciation. However, birds may have different singing styles used in distinct social contexts, and songs of each style may change at different rates over time and space. Here, we tested whether song divergence between subspecies of reed bunting, Emberiza schoeniclus, differs with singing style, by comparing song traits of its three singing styles among three subspecies breeding in northern and western Europe. We show that the two singing styles under sexual selection (dawn and fast songs, related to obtaining extrapair and social mates, respectively) diverged significantly more than the slow songs (used as an all-clear signal to nest- attending social females). Multiple song traits differed significantly between the subspecies in all singing styles, with E. s. lusitanica generally being intermediate between E. s. schoeniclus and E. s. witherbyi, and the pattern of song complexity opposing the expected latitudinal gradient (of increasing complexity with increasing latitude). Cluster analyses of populations indicate that sexually selected singing styles are better for discriminating subspecies, describing a scenario of a major split in song features between the migratory, northern E. s. schoeniclus and the two resident, southern subspecies, rather than a clinal variation. The greater song divergence in fast and dawn singing styles suggests that sexual selection may be playing an important role in the incipient speciation of reed buntings. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Animal Behaviour
volume
107
pages
221 - 231
publisher
Elsevier
external identifiers
  • wos:000359616500024
  • scopus:84938093982
ISSN
1095-8282
DOI
10.1016/j.anbehav.2015.06.024
project
Ecological speciation in reed buntings
language
English
LU publication?
yes
id
01c3156e-4a72-4a5a-b0a2-6de4ec196fb1 (old id 7752387)
date added to LUP
2015-08-13 09:35:49
date last changed
2017-03-19 03:14:07
@article{01c3156e-4a72-4a5a-b0a2-6de4ec196fb1,
  abstract     = {Song divergence between populations of a species can lead to reproductive isolation and speciation. However, birds may have different singing styles used in distinct social contexts, and songs of each style may change at different rates over time and space. Here, we tested whether song divergence between subspecies of reed bunting, Emberiza schoeniclus, differs with singing style, by comparing song traits of its three singing styles among three subspecies breeding in northern and western Europe. We show that the two singing styles under sexual selection (dawn and fast songs, related to obtaining extrapair and social mates, respectively) diverged significantly more than the slow songs (used as an all-clear signal to nest- attending social females). Multiple song traits differed significantly between the subspecies in all singing styles, with E. s. lusitanica generally being intermediate between E. s. schoeniclus and E. s. witherbyi, and the pattern of song complexity opposing the expected latitudinal gradient (of increasing complexity with increasing latitude). Cluster analyses of populations indicate that sexually selected singing styles are better for discriminating subspecies, describing a scenario of a major split in song features between the migratory, northern E. s. schoeniclus and the two resident, southern subspecies, rather than a clinal variation. The greater song divergence in fast and dawn singing styles suggests that sexual selection may be playing an important role in the incipient speciation of reed buntings.},
  author       = {Gordinho, Luís de Oliveira and Matheu, Eloisa and Hasselquist, Dennis and Neto, Julio},
  issn         = {1095-8282},
  language     = {eng},
  pages        = {221--231},
  publisher    = {Elsevier},
  series       = {Animal Behaviour},
  title        = {Song divergence between subspecies of reed bunting is more pronounced in singing styles under sexual selection},
  url          = {http://dx.doi.org/10.1016/j.anbehav.2015.06.024},
  volume       = {107},
  year         = {2015},
}