Hyperthermia and increased physical activity in the fasting American minkMustela Vison
| Autor: | Teija Pyykönen, Petteri Nieminen, Jari Aho, Anne-Mari Mustonen |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
Hyperthermia
medicine.medical_specialty High energy Time Factors Increased physical activity Motor Activity Locomotor activity Animal science Internal medicine biology.animal medicine Animals Homeothermy Mink American mink biology Fasting medicine.disease biology.organism_classification Endocrinology Metabolic rate Female Animal Science and Zoology Seasons Body Temperature Regulation |
| Zdroj: | Journal of Experimental Zoology Part A: Comparative Experimental Biology. :489-498 |
| ISSN: | 1552-499X 1548-8969 |
| Popis: | The aim of this study was to investigate the thermoregulatory adaptations to fasting in a medium-sized mustelid with a high metabolic rate and energetic requirements. Sixteen farm-bred female American minks, Mustela vison, were divided into a fed control group and an experimental group fasted for 5 days. The deep body temperature (Tb) of the minks was registered at 10 min intervals with intraabdominal thermosensitive loggers and the locomotor activity was videotaped continuously for 5 days during the fasting procedure. The Tb of the fasted animals increased during the first day of fasting and decreased during the second day. After 3–4 days of fasting, the levels of physical activity and Tb of the fasted minks increased above the levels of the fed animals. Significant increases in these parameters were observed at the beginning of the working day on the farm, during the feeding of the fed animals and around midnight. It is concluded that the mink differs from previously studied homeotherms in thermoregulatory and behavioral responses to fasting probably due to its high energy requirements and predatory success. J. Exp. Zool. 305A:1–10, 2006. © 2006 Wiley-Liss, Inc. |
| Databáze: | OpenAIRE |
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