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Fecundity selection does not vary along a large geographical cline of trait means in a passerine bird

Sirkiä, Päivi M.; Adamik, Peter; Artemyev, Alexandr V.; Belskii, Eugen; Both, Christiaan; Bures, Stanislav; Burgess, Malcolm; Bushuev, Andrey V.; Forsman, Jukka T. and Grinkov, Vladimir, et al. (2015) In Biological Journal of the Linnean Society 114(4). p.808-827
Abstract
Local environmental and ecological conditions are commonly expected to result in local adaptation, although there are few examples of variation in phenotypic selection across continent-wide spatial scales. We collected standardized data on selection with respect to the highly variable plumage coloration of pied flycatcher (Ficedula hypoleucaPall.) males from 17 populations across the species' breeding range. The observed selection on multiple male coloration traits via the annual number of fledged young was generally relatively weak. The main aim of the present study, however, was to examine whether the current directional selection estimates are associated with distance to the sympatric area with the collared flycatcher (Ficedula... (More)
Local environmental and ecological conditions are commonly expected to result in local adaptation, although there are few examples of variation in phenotypic selection across continent-wide spatial scales. We collected standardized data on selection with respect to the highly variable plumage coloration of pied flycatcher (Ficedula hypoleucaPall.) males from 17 populations across the species' breeding range. The observed selection on multiple male coloration traits via the annual number of fledged young was generally relatively weak. The main aim of the present study, however, was to examine whether the current directional selection estimates are associated with distance to the sympatric area with the collared flycatcher (Ficedula albicollisTemminck), a sister species with which the pied flycatcher is showing character displacement. This pattern was expected because plumage traits in male pied flycatchers are changing with the distance to these areas of sympatry. However, we did not find such a pattern in current selection on coloration. There were no associations between current directional selection on ornamentation and latitude or longitude either. Interestingly, current selection on coloration traits was not associated with the observed mean plumage traits of the populations. Thus, there do not appear to be geographical gradients in current directional fecundity selection on male plumage ornamentation. The results of the present study do not support the idea that constant patterns in directional fecundity selection would play a major role in the maintenance of coloration among populations in this species. By contrast, the tendency for relatively weak mosaic-like variation in selection among populations could reflect just a snapshot of temporally variable, potentially environment-dependent, selection, as suggested by other studies in this system. Such fine-grained variable selection coupled with gene flow could maintain extensive phenotypic variation across populations.(c) 2015 The Linnean Society of London, Biological Journal of the Linnean Society, 2015, 114, 808-827. (Less)
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Biological Journal of the Linnean Society
volume
114
issue
4
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808 - 827
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Linnean Society of London
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  • scopus:84924548782
  • wos:000351206700007
ISSN
0024-4066
DOI
10.1111/bij.12469
language
English
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yes
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3ec4351e-b001-4e00-aab8-d5fa6af4dc30 (old id 4813183)
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2015-06-16 15:15:32
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@article{3ec4351e-b001-4e00-aab8-d5fa6af4dc30,
  abstract     = {Local environmental and ecological conditions are commonly expected to result in local adaptation, although there are few examples of variation in phenotypic selection across continent-wide spatial scales. We collected standardized data on selection with respect to the highly variable plumage coloration of pied flycatcher (Ficedula hypoleucaPall.) males from 17 populations across the species' breeding range. The observed selection on multiple male coloration traits via the annual number of fledged young was generally relatively weak. The main aim of the present study, however, was to examine whether the current directional selection estimates are associated with distance to the sympatric area with the collared flycatcher (Ficedula albicollisTemminck), a sister species with which the pied flycatcher is showing character displacement. This pattern was expected because plumage traits in male pied flycatchers are changing with the distance to these areas of sympatry. However, we did not find such a pattern in current selection on coloration. There were no associations between current directional selection on ornamentation and latitude or longitude either. Interestingly, current selection on coloration traits was not associated with the observed mean plumage traits of the populations. Thus, there do not appear to be geographical gradients in current directional fecundity selection on male plumage ornamentation. The results of the present study do not support the idea that constant patterns in directional fecundity selection would play a major role in the maintenance of coloration among populations in this species. By contrast, the tendency for relatively weak mosaic-like variation in selection among populations could reflect just a snapshot of temporally variable, potentially environment-dependent, selection, as suggested by other studies in this system. Such fine-grained variable selection coupled with gene flow could maintain extensive phenotypic variation across populations.(c) 2015 The Linnean Society of London, Biological Journal of the Linnean Society, 2015, 114, 808-827.},
  author       = {Sirkiä, Päivi M. and Adamik, Peter and Artemyev, Alexandr V. and Belskii, Eugen and Both, Christiaan and Bures, Stanislav and Burgess, Malcolm and Bushuev, Andrey V. and Forsman, Jukka T. and Grinkov, Vladimir and Hoffmann, Dieter and Jaervinen, Antero and Kral, Miroslav and Krams, Indrikis and Lampe, Helene M. and Moreno, Juan and Maegi, Marko and Nord, Andreas and Potti, Jaime and Ravussin, Pierre-Alain and Sokolov, Leonid and Laaksonen, Toni},
  issn         = {0024-4066},
  language     = {eng},
  number       = {4},
  pages        = {808--827},
  publisher    = {Linnean Society of London},
  series       = {Biological Journal of the Linnean Society},
  title        = {Fecundity selection does not vary along a large geographical cline of trait means in a passerine bird},
  url          = {http://dx.doi.org/10.1111/bij.12469},
  volume       = {114},
  year         = {2015},
}