Effects ofProtocalliphoraParasites on Nestling Food Composition in Corsican Blue TitsParus caeruleus: Consequences for Nestling Performance
نویسندگان
چکیده
منابع مشابه
Seasonal decline in provisioning effort and nestling mass of Blue Tits Cyanistes caeruleus: experimental support for the parent quality hypothesis
A common feature of many birds breeding in seasonal environments is that fitnessrelated parameters such as nestling mass or survival decline as the breeding season progresses. Consequently, there is a tendency for early breeders to have better reproductive performance than individuals breeding later in the season. This variation could be caused by factors associated with the date of laying, suc...
متن کاملVector abundance determines Trypanosoma prevalence in nestling blue tits.
The effect of insect vectors on avian exposure to infection by pathogens remains poorly studied. Here, we used an insect repellent treatment to reduce the number of blood-sucking flying insects in blue tit Cyanistes caeruleus nests and examined its effect on nestling health status measured as body mass, nestling phytohaemagglutinin (PHA) response and blood parasite prevalence. We found that (i)...
متن کاملChemical composition of growth in nestling blackbirds and thrushes.
I . The bodies of twenty-three nestling blackbirds and twenty-one nestling thrushes were analysed at different ages for water, fat, nitrogen, calcium, phosphorus, sodium, potassium and magnesium. These birds grow from a weight of 5 g at hatching to 70 and 5 0 g respectively when they leave the nest 12-13 d later. 2. The concentration of N in the bodies doubled, while Ca increased seven to eight...
متن کاملEffects of Nestling Health on Postfledging Survival of Wood Storks
Little is known about the period between fledging and breeding in long-lived birds, including survival rates and factors affecting survival, yet this period may be critical to population regulation. We conducted health exams on 72 nestling Wood Storks (Mycteria americana) aged 4–6 weeks, and monitored survival of these birds via satellite telemetry for up to two years of age. Eighty-two percent...
متن کاملFood Consumption and Growth Energetics of Nestling Golden Eagles
AasTaAcT. -Food consumption, energy metabolism, and growth of 12 wild Golden Eagle (Aquilu chrysaetos) chicks were compared with 4 captive chicks to evaluate the influence of food availability and sibling interaction on growth in wild nestlings. Captive female and male eaglets consumed and assimilated similar amounts of black-tailed jack rabbit (Lepus calijbrnicus). A linear relationship betwee...
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ژورنال
عنوان ژورنال: Acta Ornithologica
سال: 2004
ISSN: 0001-6454,1734-8471
DOI: 10.3161/068.039.0206