An intimidating ornament in a female pipefish
نویسندگان
چکیده
منابع مشابه
Intimidating butterflies.
Many butterfly species feature two or four conspicuously coloured eyespots on their wings; the most commonly heard explanation for these markings is that they are used to intimidate predators. However, this explanation has stood, until recently, on the flimsiest of empirical foundations. Now, Adrian Vallin and colleagues have demonstrated empirically the effectiveness of these signals in dissua...
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Sex-dependent selection often leads to spectacularly different phenotypes in males and females. In species in which sexual dimorphism is not complete, it is unclear which benefits females and males derive from displaying a trait that is typical of the other sex. In barn owls (Tyto alba), females exhibit on average larger black eumelanic spots than males but members of the two sexes display this...
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Understanding how selection acts on traits individually and in combination is an important step in deciphering the mechanisms driving evolutionary change, but for most species, and especially those in which sexual selection acts more strongly on females than on males, we have no estimates of selection coefficients pertaining to the multivariate sexually selected phenotype. Here, we use a labora...
متن کاملA female melanin ornament signals offspring fluctuating asymmetry in the barn owl.
Sexual selection theory predicts that males advertise quality by displaying extravagant ornaments. By contrast, whether phenotypic variation in females has a signalling function remains an open question. Here, to our knowledge, we provide the first evidence that a female plumage trait can signal fluctuating asymmetry in the offspring. We experimentally demonstrate in wild barn owls (Tyto alba) ...
متن کاملFemale reproductive tactics in a sex-role reversed pipefish: scanning for male quality and number
K. Silva, V.C. Almada, M.N. Vieira, and N.M. Monteiro Departamento de Zoologia e Antropologia, Faculdade de Ciências da Universidade do Porto, Prac xa Gomes Teixeira 4099-002, Portugal, Laboratório de Ecologia, Centro Interdisciplinar de Investigac xão Marinha e Ambiental, Rua dos Bragas 177, 4050-123 Porto, Portugal, Instituto Superior de Psicologia Aplicada, Rua Jardim do Tabaco 34, 1149-041 ...
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ژورنال
عنوان ژورنال: Behavioral Ecology
سال: 2008
ISSN: 1465-7279,1045-2249
DOI: 10.1093/beheco/arn114