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Age, condition and dominance-related sexual ornament size before and during the breeding season in the black grouse Lyrurus tetrix ArchiMer
Harris, Sarah; Kervinen, Matti; Lebigre, Christophe; Pike, Thomas W.; Soulsbury, Carl D..
Male ornaments function as honest cues of male quality in many species and are subject to intra‐ and intersexual selection. These ornaments are generally studied during peak expression, however their size outside the breeding season may determine ultimate ornament size and costliness, and as such reproductive success. We investigated whether male black grouse Lyrurus tetrix eye comb size was related to age, condition and measures of male dominance before and during the breeding season. Total combined eye comb size began to increase ~70 days before the start of the breeding season. Adult males (aged ≥ 2 years old) had consistently larger eye combs than younger males (1 year old) both before and during the breeding season. Heavier and more dominant adult...
Tipo: Text Palavras-chave: Age; Ornament expression; Dominance.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00440/55121/56577.pdf
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