Evolutionary trade-off between male colouration and feather moult extent also indirectly determines female moult

Yosef Kiat, Nir Sapir

Research output: Contribution to journalArticlepeer-review

Abstract

Males and females are often influenced by different selective forces, frequently resulting in diverging phenotypes, for example in colouration. Since an animal's colouration may strongly influence its fitness, causes and consequences of sexual dichromatism in birds could aid in understanding important factors affecting sexual and natural selection. Variation in plumage ornamentation may affect mate attraction or intraspecific antagonistic behaviour. In most passerines, body plumage colouration of juveniles is obtained through the process of feather moult. The number of moulted wing and tail feathers, which also influences the bird's appearance, may affect its fitness. Here, we show that body plumage colouration of male, but not female, passerines is correlated with the number of moulted wing and tail feathers in the early stage of the bird's life for both sexes. Thus, the extent of wing and tail moult in females is not modulated by the female's colouration and can prevent females from reaching their sex-specific optima. This result could be explained by high intersexual genetic correlations, which might make it impossible for the sexes to reach their own trait fitness optima. Our findings may indicate that species-specific, rather than sex-specific, internal correlations shaped bird moult strategy, an important avian life-history trait.

Original languageEnglish
Pages (from-to)278-287
Number of pages10
JournalJournal of Evolutionary Biology
Volume35
Issue number2
DOIs
StatePublished - Feb 2022

Bibliographical note

Funding Information:
This research received support from the SYNTHESYS Project http://www.synthesys.info/ which is financed by European Community Research Infrastructure Action under the FP7 ‘Capacities’ Program. We would like to thank H. V. Grouw and M. Adams from the Natural History Museum (Tring; UK), J. Fuchs and V. Bouetel from the Museum National d’Histoire Naturelle (Paris, France), K. Thorup, J. B. Kristensen and N. Manniche from the National History Museum of Denmark (Copenhagen, Denmark), S. Frahnert, P. Eckhoff and M. Voß from the Museum für Naturkunde (Berlin, Germany), J. B. Rodriguez and J. Cabarga from the Museo Nacional de Ciencias Naturales (Madrid, Spain), U. Johansson and I. Bisang from the Naturhistoriska Riksmuseet (Stockholm, Sweden), A. Gamauf and A. Hille from the Natural History Museum Vienna (Vienna, Austria), D. Berkowic and A. Belmaker from the Steinhardt Museum of Natural History (Tel‐Aviv, Israel) and A. Aleixo and S. Sainio from the Finnish Museum of Natural History (Helsinki, Finland).

Funding Information:
This research received support from the SYNTHESYS Project http://www.synthesys.info/ which is financed by European Community Research Infrastructure Action under the FP7 ?Capacities? Program. We would like to thank H. V. Grouw and M. Adams from the Natural History Museum (Tring; UK), J. Fuchs and V. Bouetel from the Museum National d?Histoire Naturelle (Paris, France), K. Thorup, J. B. Kristensen and N. Manniche from the National History Museum of Denmark (Copenhagen, Denmark), S. Frahnert, P. Eckhoff and M. Vo? from the Museum f?r Naturkunde (Berlin, Germany), J. B. Rodriguez and J. Cabarga from the Museo Nacional de Ciencias Naturales (Madrid, Spain), U. Johansson and I. Bisang from the Naturhistoriska Riksmuseet (Stockholm, Sweden), A. Gamauf and A. Hille from the Natural History Museum Vienna (Vienna, Austria), D. Berkowic and A. Belmaker from the Steinhardt Museum of Natural History (Tel-Aviv, Israel) and A. Aleixo and S. Sainio from the Finnish Museum of Natural History (Helsinki, Finland).

Publisher Copyright:
© 2021 European Society for Evolutionary Biology.

Keywords

  • feather moult
  • genetic correlation
  • life-history transitions
  • passerines
  • sexual conflict
  • sexual selection

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics

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