Multiple sexual ornaments signal heterozygosity in male blue tits
نویسندگان
چکیده
منابع مشابه
Assortative mating by colored ornaments in blue tits: space and time matter
Assortative mating is a potential outcome of sexual selection, and estimating its level is important to better understand local adaptation and underlying trait evolution. However, assortative mating studies frequently base their conclusions on small numbers of individuals sampled over short periods of time and limited spatial scales even though spatiotemporal variation is common. Here, we chara...
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In many animals, sexual selection has resulted in complex signaling systems in which males advertise aspects of their phenotypic or genetic quality through elaborate ornamentation and display behaviors. Different ornaments might convey different information or be directed at different receivers, but they might also be redundant signals of quality that function reliably at different times (ages)...
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Models of sexual selection suggest that mate-choice preferences are favored because differences between males in their degree of ornamental exaggeration convey useful information about the direct or indirect benefits they have to offer [1-5]. Such arguments assume that variation in male ornament size can be attributed to variation in the degree of sexually selected exaggeration. We provide the ...
متن کاملHeterozygosity-based assortative mating in blue tits (Cyanistes caeruleus): implications for the evolution of mate choice.
The general hypothesis of mate choice based on non-additive genetic traits suggests that individuals would gain important benefits by choosing genetically dissimilar mates (compatible mate hypothesis) and/or more heterozygous mates (heterozygous mate hypothesis). In this study, we test these hypotheses in a socially monogamous bird, the blue tit (Cyanistes caeruleus). We found no evidence for a...
متن کاملCan eggs in a cavity be a female secondary sexual signal? Male nest visits and modelling of egg visual discrimination in blue tits.
Eggshell colouration is thought to function as a female-specific secondary sexual trait. While tests of this idea are rapidly accumulating in cavity-nesting birds, some fundamental underlying assumptions remain rarely investigated: namely, can males see eggshell coloration and perceive colour differences between the eggs of different females? We tested these two key assumptions in a natural pop...
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ژورنال
عنوان ژورنال: Biological Journal of the Linnean Society
سال: 2015
ISSN: 0024-4066
DOI: 10.1111/bij.12513