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  Selection on personality in a songbird affects maternal hormone levels tuned to its effect on timing of reproduction

Groothuis, T. G. G., Carere, C., Lipar, J., Drent, P. J., & Schwabl, H. (2008). Selection on personality in a songbird affects maternal hormone levels tuned to its effect on timing of reproduction. Biology Letters, 4(5), 465-467. doi:10.1098/rsbl.2008.0258.

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Genre: Journal Article

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Groothuis, T. G. G., Author
Carere, C., Author
Lipar, J., Author
Drent, P. J., Author
Schwabl, Hubert1, Author              
Affiliations:
1Washington State University Pullman, USA, ou_persistent22              

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 Abstract: The increase or decrease in yolk androgens over the laying sequence of a clutch in birds may mitigate or enhance, respectively, the disadvantage of the last-hatched chicks, providing a potentially adaptive tool to adjust brood size to food conditions. This variation may involve a genetic component on which Darwinian selection can act. We found that two lines of a wild bird species selected for bold and shy personalities show, respectively, increased and decreased androgen concentrations over the laying sequence. The line showing the increase laid earlier in the season, when food conditions are normally sufficient to raise the whole brood. The line showing the decrease laid later, when food is normally scarce, which may facilitate brood reduction. The results indicate a correlated response in maternal hormone transfer to genetic selection on personality, which relates to ecological conditions.

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 Dates: 2008-10-23
 Publication Status: Published in print
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 Table of Contents: -
 Rev. Type: -
 Identifiers: Other: WOS:000259085900008
DOI: 10.1098/rsbl.2008.0258
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Title: Biology Letters
  Other : Biol. Lett.
Source Genre: Journal
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Publ. Info: London, [England] : The Royal Society
Pages: - Volume / Issue: 4 (5) Sequence Number: - Start / End Page: 465 - 467 Identifier: ISSN: 1744-9561
CoNE: https://pure.mpg.de/cone/journals/resource/954925580128