INTRASEXUAL TERRITORIALITY IN WOODCHUCKS (MARMOTA MONAX)
نویسندگان
چکیده
منابع مشابه
Latitudinal differences in the hibernation characteristics of woodchucks (Marmota monax).
There is little information on the phenotypic flexibility of hibernation characteristics within species. To address this issue, we observed differences in hibernation characteristics of three free-ranging populations of woodchucks (Marmota monax) distributed along a latitudinal gradient from Maine to South Carolina. Data from free-ranging animals exhibited a direct relationship between latitude...
متن کاملCircannual changes in free thyroxine, prolactin, testes, and relative food intake in woodchucks, Marmota monax.
Woodchucks ( n = 12-14/group) with circannual cycles entrained to northern versus southern hemisphere photoperiods were assessed monthly for 16 mo. Changes in serum total triiodothyronine (TT3), free thyroxine (T4), total thyroxine (TT4), and prolactin were determined in a subset of five animals per group. Metabolic hormone results were examined in relation to changes in body weight, food intak...
متن کاملNitrite and Nitrosamine Synthesis by Hepatocytes Isolated from Normal Woodchucks (Marmota monax) and Woodchucks Chronically Infected with Woodchuck Hepatitis Virus1
Hepatocytes isolated from woodchucks (Marmota monax) were shown to produce nitrite in vitro from i.-arginine after stimulation with lipopolysaccharide (LPS). Hepatocytes isolated from woodchucks that were chronic carriers of woodchuck hepatitis virus formed twice as much nitrite as hepatocytes from noninfected animals. Nitrite synthesis by hepatocytes was directly related to i-arginine and LPS ...
متن کاملParasitic encephalitis due to Baylisascaris sp. in wild and captive woodchucks (Marmota monax).
Twelve of 102 woodchucks submitted for necropsy to the New York State College of Veterinary Medicine had clinical histories of central nervous system disorder. All had multifocal eosinophilic encephalitis with formation of granulomas. Nematode larvae, identified as Baylisascaris sp. were found in six of the 12 and were assumed to be the etiologic agent in all affected woodchucks. Both wild and ...
متن کاملProteomic mechanisms of cardioprotection during mammalian hibernation in woodchucks, Marmota monax.
Mammalian hibernation is a unique strategy for winter survival in response to limited food supply and harsh climate, which includes resistance to cardiac arrhythmias. We previously found that hibernating woodchucks (Marmota monax) exhibit natural resistance to Ca2+ overload-related cardiac dysfunction and nitric oxide (NO)-dependent vasodilation, which maintains myocardial blood flow during hib...
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ژورنال
عنوان ژورنال: Journal of Mammalogy
سال: 2004
ISSN: 0022-2372,1545-1542
DOI: 10.1644/bwg-205.1