Melanin Ornaments, Honesty, and Sexual Selection
نویسندگان
چکیده
منابع مشابه
Stabilizing sexual selection for female ornaments in a dance fly.
Ornamental traits function by improving attractiveness and are generally presumed to experience directional selection for mating success. However, given the greater investment of females in offspring than males, female-specific ornaments can in theory signal fecundity yet be constrained by fecundity costs. Theoretical work predicts that such constraints can lead to stabilizing selection via mal...
متن کاملThe evolution of female ornaments and weaponry: social selection, sexual selection and ecological competition.
Ornaments, weapons and aggressive behaviours may evolve in female animals by mate choice and intrasexual competition for mating opportunities-the standard forms of sexual selection in males. However, a growing body of evidence suggests that selection tends to operate in different ways in males and females, with female traits more often mediating competition for ecological resources, rather than...
متن کاملChapter 10 --sexual Ornaments and Mate Choice Mate Choice and Sexual Ornaments
Get out of your chair and go look at some animals behaving. I hope that spring is in the air so that you can see animals courting and mating. Look at insects, birds, mammals, or reptiles. Go to the beach and look at the fiddler crabs. So sad if the dead of winter has set in and animals aren’t engaged in mating rituals. Look at fish in an aquarium. Go to a tropical fish store and look at a tank ...
متن کاملSignaling Efficacy Drives the Evolution of Larger Sexual Ornaments by Sexual Selection
Why are there so few small secondary sexual characters? Theoretical models predict that sexual selection should lead to reduction as often as exaggeration, and yet we mainly associate secondary sexual ornaments with exaggerated features such as the peacock's tail. We review the literature on mate choice experiments for evidence of reduced sexual traits. This shows that reduced ornamentation is ...
متن کاملSexual selection, multiple male ornaments, and age- and condition-dependent signaling in the common yellowthroat.
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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ژورنال
عنوان ژورنال: The Auk
سال: 2003
ISSN: 1938-4254,0004-8038
DOI: 10.1093/auk/120.2.249