The relative importance of male tail length and nuptial plumage on social dominance and mate choice in the red-backed fairy-wren Malurus melanocephalus: evidence for the multiple receiver hypothesis
نویسندگان
چکیده
J. Karubian (correspondence), Ctr. for Tropical Res., Inst. of the Env., Univ. of California, Los Angeles, La Kretz Hall, Suite 300, Box 951496, Los Angeles, CA 90095, USA. Present address: Dept. of Ecol. and Evol. Biol., Tulane Univ., 400 Lindy Boggs Center, New Orleans, LA 70118-5698, USA. Email: [email protected]. J. P. Swaddle, Inst. for Integr. Bird Behav. Stud., Biol. Dept., Coll. of William and Mary, Williamsburg, VA 23187-8795 USA. C. W. Varian-Ramos and M. S. Webster, School of Biol. Sci. and Ctr. for Reprod. Biol., Washington State Univ., Pullman, Washington, 99164-4236 USA.
منابع مشابه
Sexually Selected Male Plumage Color Is Testosterone Dependent in a Tropical Passerine Bird, the Red-Backed Fairy-Wren (Malurus melanocephalus)
BACKGROUND Sexual signals, such as bright plumage coloration in passerine birds, reflect individual quality, and testosterone (T) may play a critical role in maintaining signal honesty. Manipulations of T during molt have yielded mixed effects on passerine plumage color, in most cases delaying molt or leading to production of drab plumage. However, the majority of these studies have been conduc...
متن کاملExperimental evidence that extra-pair mating drives asymmetrical introgression of a sexual trait.
Theory suggests that traits under positive selection may introgress asymmetrically across a hybrid zone, potentially driven by sexual selection. Two subspecies of the red-backed fairy-wren (Malurus melanocephalus) differ primarily in a sexual signal used in mate choice-red versus orange male back plumage colour-but phylogeographic analyses suggest asymmetrical introgression of red plumage into ...
متن کاملChanges in breeding status are associated with rapid bill darkening in male red-backed fairy-wrens Malurus melanocephalus
In many animals, an individual’s social environment and status can change quickly and unpredictably, suggesting an advantage for signals capable of responding to these changes. However, many signaling traits are fixed for relatively long periods. In birds, for example, most plumage-based signals are constrained by molt and unable to respond to sudden changes in social environment. Soft parts, c...
متن کاملTestosterone activates sexual dimorphism including male-typical carotenoid but not melanin plumage pigmentation in a female bird.
In males it is frequently testosterone (T) that activates the expression of sexually selected morphological and behavioral displays, but the role of T in regulating similar traits in females is less clear. Here, we combine correlational data with results from T and gonadotropin-releasing hormone (GnRH) manipulations in both sexes to assess the role of T in mediating sexually dimorphic coloratio...
متن کاملCarotenoids in the Seminal Fluid of Wild Birds: Interspecific Variation in Fairy-wrens
Male secondary sexual characters can provide females with information regarding the fertilizing capacity of a male’s sperm. In some fishes and birds, intense nuptial coloration is correlated with male fertilizing capacity, but no mechanistic link between coloration and sperm quality has been established. One plausible mechanism is that carotenoid pigments, which color skin and feathers in many ...
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تاریخ انتشار 2009