Osmoregulation by Nestling and Adult American Kestrels (Falco Sparverius)
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چکیده
منابع مشابه
Variation in Hematocrit and Total Plasma Proteins of Nestling American Kestrels (Falco sparverius) in the Wild
Hematocrits and total plasma proteins were determined at 24 days old for 86 female and 85 male nestling American kestrels (Falco sparverius) from the wild in northern Saskatchewan. No sex differences were detected in either hematocrit or plasma protein. For females, hematocrit and plasma protein were not related to time of sampling, temperature at sampling, mass of nestlings or length of the te...
متن کاملImmunological development in nestling American kestrels Falco sparverius: post-hatching ontogeny of the antibody response.
Avian research involving examination of immune function or testing of immunocompetence in wild birds has been based upon information on Galliforms, (chicken and quail) even though they are precocial, whereas most wild species with which ecologists, biologists and toxicologists work are altricial; blind, naked and completely dependent at hatching. Here we begin to address this gap in knowledge, ...
متن کاملThe effects of neonatal handling on adrenocortical responsiveness, morphological development and corticosterone binding globulin in nestling American kestrels (Falco sparverius).
Early developmental experiences play an important role in development of the adult phenotype. We investigated the effects of neonatal handling on the hypothalamic-pituitary-adrenal axis in a free-living avian species, the American kestrel (Falco sparverius). In the handled group (H), kestrel chicks were handled for 15 min/day from hatching until 26 days of age, after which time blood samples we...
متن کاملAcute toxicity, histopathology, and coagulopathy in American kestrels (Falco sparverius) following administration of the rodenticide diphacinone.
The acute oral toxicity of the anticoagulant rodenticide diphacinone was found to be over 20 times greater in American kestrels (Falco sparverius; median lethal dose 96.8 mg/kg body weight) compared with Northern bobwhite (Colinus virginianus) and mallards (Anas platyrhynchos). Modest evidence of internal bleeding was observed at necropsy, although histological examination of heart, liver, kidn...
متن کاملGenetics, local environment and health as factors influencing plasma carotenoids in wild American kestrels (Falco sparverius).
Carotenoids are important as pigments for bright coloration of animals, and as physiologically active compounds with a wide array of health-related functions. Carotenoid-dependent coloration may have evolved as a signal to conspecifics; however, factors that may limit availability of carotenoids are poorly known. We investigated how the acquisition of carotenoids may be constrained by availabil...
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ژورنال
عنوان ژورنال: The Auk
سال: 2002
ISSN: 1938-4254,0004-8038
DOI: 10.1093/auk/119.2.426