Mate Choice, Male Condition-Dependent Ornamentation and MHC in the Pheasant
نویسندگان
چکیده
منابع مشابه
Condition-dependent mate choice and a reproductive disadvantage for MHC-divergent male tiger salamanders.
Major histocompatibility complex (MHC) alleles likely have adaptive value because of overdominance, in which case MHC heterozygous individuals have increased fitness relative to homozygotes. Because of this potential benefit, the evolution of sexual reproduction between MHC-divergent individuals (i.e. negative assortative mating, NAM) may be favoured. However, the strongest evidence for MHC-bas...
متن کاملFemale ornamentation and male mate choice in dark-eyed juncos
Traits that enhance attractiveness in one sex may or may not influence attractiveness in the other. In the dark-eyed junco, Junco hyemalis, outer tail feathers of males and females are all or partly white and form a sharp contrast with the bird’s mostly grey plumage. The amount of white in these feathers (‘tail white’) is greater in males than in females and, as we report here, is greater in bi...
متن کاملIs Mate Choice in Humans MHC-Dependent?
In several species, including rodents and fish, it has been shown that the Major Histocompatibility Complex (MHC) influences mating preferences and, in some cases, that this may be mediated by preferences based on body odour. In humans, the picture has been less clear. Several studies have reported a tendency for humans to prefer MHC-dissimilar mates, a sexual selection that would favour the pr...
متن کاملEffects of egg testosterone on female mate choice and male sexual behavior in the pheasant.
Evidence is accumulating that sex steroids in the eggs, besides affecting progeny phenotype and behavior in the short term, also have enduring effects until adulthood, when they may translate into differences in reproductive strategies and success. Maternal steroids transfer may therefore affect both agonistic behavior and mate choice decisions, either through the promotion of body size and con...
متن کاملAn Experimental Test of Condition-Dependent Male and Female Mate Choice in Zebra Finches
In mating systems with social monogamy and obligatory bi-parental care, such as found in many songbird species, male and female fitness depends on the combined parental investment. Hence, both sexes should gain from choosing mates in high rather than low condition. However, theory also predicts that an individual's phenotypic quality can constrain choice, if low condition individuals cannot aff...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Hereditas
سال: 2004
ISSN: 0018-0661
DOI: 10.1111/j.1601-5223.1997.t01-1-00133.x