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Direct benefits and the evolution of female-biased cooperative breeding in Seychelles warblers

Richardson, David LU ; Burke, T and Komdeur, J (2002) In Evolution 56(11). p.2313-2321
Abstract
Inclusive fitness benefits have been suggested to be a major selective force behind the evolution of cooperative breeding. We investigated the fitness benefits selecting for cooperative breeding in the Seychelles warbler, Acroccphalus sechellensis. A microsatellite-based genotyping method was used to determine the relatedness of subordinates to group offspring in an isolated population of Seychelles warblers. The indirect and direct breeding benefits accruing to individual subordinates were then calculated for every successful breeding event over a three-year period. We show that female subordinates frequently gained parentage and that this, combined with high levels of extragroup paternity, resulted in low levels of relatedness between... (More)
Inclusive fitness benefits have been suggested to be a major selective force behind the evolution of cooperative breeding. We investigated the fitness benefits selecting for cooperative breeding in the Seychelles warbler, Acroccphalus sechellensis. A microsatellite-based genotyping method was used to determine the relatedness of subordinates to group offspring in an isolated population of Seychelles warblers. The indirect and direct breeding benefits accruing to individual subordinates were then calculated for every successful breeding event over a three-year period. We show that female subordinates frequently gained parentage and that this, combined with high levels of extragroup paternity, resulted in low levels of relatedness between subordinates and nondescendent offspring within a territory. Direct breeding benefits were found to be significantly higher than indirect kin benefits for both female and male subordinates. As predicted, female subordinates gained significantly more direct breeding opportunities and therefore higher inclusive fitness benefits by being a subordinate within a group than did males. This may explain why most subordinates in the Seychelles warbler are female. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
benefits, indirect, direct benefits, Acrocephalus warblers, cooperative breeding, kin selection, microsatellite markers, relatedness
in
Evolution
volume
56
issue
11
pages
2313 - 2321
publisher
Wiley-Blackwell
external identifiers
  • wos:000179683100019
  • pmid:12487360
  • scopus:0036861077
ISSN
1558-5646
DOI
10.1111/j.0014-3820.2002.tb00154.x
language
English
LU publication?
yes
id
368d2b59-90b0-45b8-a870-7d857b5d7f0b (old id 321732)
date added to LUP
2007-11-12 10:57:00
date last changed
2017-12-10 04:29:43
@article{368d2b59-90b0-45b8-a870-7d857b5d7f0b,
  abstract     = {Inclusive fitness benefits have been suggested to be a major selective force behind the evolution of cooperative breeding. We investigated the fitness benefits selecting for cooperative breeding in the Seychelles warbler, Acroccphalus sechellensis. A microsatellite-based genotyping method was used to determine the relatedness of subordinates to group offspring in an isolated population of Seychelles warblers. The indirect and direct breeding benefits accruing to individual subordinates were then calculated for every successful breeding event over a three-year period. We show that female subordinates frequently gained parentage and that this, combined with high levels of extragroup paternity, resulted in low levels of relatedness between subordinates and nondescendent offspring within a territory. Direct breeding benefits were found to be significantly higher than indirect kin benefits for both female and male subordinates. As predicted, female subordinates gained significantly more direct breeding opportunities and therefore higher inclusive fitness benefits by being a subordinate within a group than did males. This may explain why most subordinates in the Seychelles warbler are female.},
  author       = {Richardson, David and Burke, T and Komdeur, J},
  issn         = {1558-5646},
  keyword      = {benefits,indirect,direct benefits,Acrocephalus warblers,cooperative breeding,kin selection,microsatellite markers,relatedness},
  language     = {eng},
  number       = {11},
  pages        = {2313--2321},
  publisher    = {Wiley-Blackwell},
  series       = {Evolution},
  title        = {Direct benefits and the evolution of female-biased cooperative breeding in Seychelles warblers},
  url          = {http://dx.doi.org/10.1111/j.0014-3820.2002.tb00154.x},
  volume       = {56},
  year         = {2002},
}