Behavioral Characterization of a White-Throated Sparrow Homozygous for the ZAL2m Chromosomal Rearrangement
نویسندگان
چکیده
منابع مشابه
The chromosomal polymorphism linked to variation in social behavior in the white-throated sparrow (Zonotrichia albicollis) is a complex rearrangement and suppressor of recombination.
Variation in social behavior and plumage in the white-throated sparrow (Zonotrichia albicollis) is linked to an inversion polymorphism on chromosome 2. Here we report the results of our comparative cytogenetic mapping efforts and population genetics studies focused on the genomic characterization of this balanced chromosomal polymorphism. Comparative chromosome painting and cytogenetic mapping ...
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White-throated sparrows increase fat deposits during pre-migratory periods and rely on these fat stores to fuel migration. Adipose tissue produces hormones and signaling factors in a rhythmic fashion and may be controlled by a clock in adipose tissue or driven by a master clock in the brain. The master clock may convey photoperiodic information from the environment to adipose tissue to facilita...
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Plasma binding globulins bind steroid hormones and are thought to regulate hormone access to tissues. Mammals have both sex steroid binding globulin (SSBG) and corticosteroid binding globulin (CBG). Birds, however, have no detectable SSBG, leading to the early conclusion that birds have no plasma regulation of sex steroids. CBG, however, can bind androgens with relatively high affinity. In bird...
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Many populations of migratory birds show a conspicuous increase in body weight due to the deposition of fat prior to or during migration (King and Famer 1965). Kuenzel and Helms (1967) recently demonstrated that electrolytic lesions, properly placed in the ventromedial area of the hypothalamus of the Whitethroated Sparrow (Zonotrichia albicollb) led to marked weight gains. These increases were ...
متن کاملDietary macronutrients affect lipid metabolites and body composition of a migratory passerine, the white-throated sparrow (Zonotrichia albicollis).
Plasma lipid metabolites can provide information about fat metabolism and storage in migrating birds, yet little is known about the influence of diet and nutrition or how they relate to intraindividual differences in body composition of songbirds. We investigated how dietary macronutrient composition affects plasma lipid concentrations and subsequent changes in fat accumulation in white-throate...
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ژورنال
عنوان ژورنال: Behavior Genetics
سال: 2012
ISSN: 0001-8244,1573-3297
DOI: 10.1007/s10519-012-9574-6