Nestling Growth and Thermoregulatory Development in Subalpine Dusky Flycatchers
نویسندگان
چکیده
منابع مشابه
Song discrimination by nestling collared flycatchers during early development
Pre-zygotic isolation is often maintained by species-specific signals and preferences. However, in species where signals are learnt, as in songbirds, learning errors can lead to costly hybridization. Song discrimination expressed during early developmental stages may ensure selective learning later in life but can be difficult to demonstrate before behavioural responses are obvious. Here, we us...
متن کاملFitness of two competing species of flycatchers and their hybrids in term of nestling growth
Speciation can be seen as the establishment of reproductive barriers among species. Hybrid zones provide us with an ideal situation to study the process of speciation because the evolution of reproductive isolation is still in progress. Hybrids usually suffer reduced fitness (i.e. leading to post-zygotic isolation) although they may have higher or similar fitness as the parental species in some...
متن کاملNestling immune response to phytohaemagglutinin is not heritable in collared flycatchers.
The response to intradermally injected phytohaemagglutinin (PHA-response) is a commonly used quantification of avian immunocompetence (the ability to resist pathogens). Parasite-mediated sexual selection requires heritable immunocompetence, but evidence for heritability of PHA-response in birds largely stems from full-sib comparisons. Using an animal model approach, we quantified the narrow-sen...
متن کاملGrowth and Development of Thermoregulation in Nestling San Miguel Island Song Sparrows’
RAHN, H., AND C. V. PAGANELLI. 1990. Gas fluxes in avian eggs: driving forces and the pathway for exchange. Comp. Biochem. Physiol. 95A:l-15. SWART, D., H. RAHN, AND J. DE KOCK. 1987. Nest microclimate and incubation water loss of eggs of the African Ostrich (Struthio camelus var. domesticus). J. Exp. Zool. Suppl. 1:239-246. WALSBERG, G. E. 1980. The gaseous microclimate of the avian nest durin...
متن کاملRelative performance of hybrid nestlings in Ficedula flycatchers: a translocation experiment
Ecological speciation predicts that hybrids should experience relatively low fitness in the local environments of their parental species. In this study, we performed a translocation experiment of nestling hybrids between collared and pied flycatchers into the nests of conspecific pairs of their parental species. Our aim was to compare the performance of hybrids with purebred nestlings. Nestling...
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ژورنال
عنوان ژورنال: The Auk
سال: 2001
ISSN: 1938-4254,0004-8038
DOI: 10.1093/auk/118.1.116