Contrasting sensitivity of nestling and fledgling Barn Swallow Hirundo rustica body mass to local weather conditions
نویسندگان
چکیده
منابع مشابه
Differences in begging behaviour between barn swallow, Hirundo rustica, nestlings.
Recent models of parent-offspring communication suggest that nestling begging reliably reflects food requirements, and therefore should increase with nestling need. Need may be affected by short-term variations in hunger, as well as by long-term factors such as relative size, growth rate and body condition. In the present study, the brood sizes of barn swallows were manipulated to create differ...
متن کاملHaematocrit is weakly related to condition in nestling Barn Swallows Hirundo rustica
JOSÉ J. CUERVO, 1 * ANDERS P. MØLLER 2 & FLORENTINO DE LOPE 3 1 Estación Experimental de Zonas Áridas, Consejo Superior de Investigaciones Científicas, Calle General Segura 1, E-04001 Almería, Spain 2 Laboratoire de Parasitologie Evolutive, CNRS UMR 7103, Université Pierre et Marie Curie, 7 quai St. Bernard, Case 237, F-75252 Paris Cedex 05, France 3 Departamento de Ciencias Morfológicas y Biol...
متن کاملImmune System Responses to Ectoparasite Infections in Nestling Barn Swallows Hirundo rustica: an Experimental Approach
In altricial [helpless] birds, ectoparasite [external parasite] exposure during development may elicit a costly immune response requiring nestlings to redistribute energy away from growth and development and towards parasite defense. That altricial nestlings are born with an immature immune system may have implications for the mechanisms they use for immune defense. I studied how nestlings defe...
متن کاملClock gene polymorphism and scheduling of migration: a geolocator study of the barn swallow Hirundo rustica
Circannual rhythms often rely on endogenous seasonal photoperiodic timers involving 'clock' genes, and Clock gene polymorphism has been associated to variation in phenology in some bird species. In the long-distance migratory barn swallow Hirundo rustica, individuals bearing the rare Clock allele with the largest number of C-terminal polyglutamine repeats found in this species (Q8) show a delay...
متن کاملSexual Dimorphism in Melanin Pigmentation, Feather Coloration and Its Heritability in the Barn Swallow (Hirundo rustica)
Melanin is the main pigment in animal coloration and considerable variation in the concentrations of the two melanin forms (pheo- and eumlanin) in pigmented tissues exists among populations and individuals. Melanin-based coloration is receiving increasing attention particularly in socio-sexual communication contexts because the melanocortin system has been hypothesized to provide a mechanistic ...
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ژورنال
عنوان ژورنال: Ibis
سال: 2020
ISSN: 0019-1019,1474-919X
DOI: 10.1111/ibi.12824