Abstract
Absract 1. 1. The basal metabolism of the vole, Microtus ochrogaster, a non-hibernator is about 80% below that expected for microtine rodents, while the basal metabolism of the chipmunk, Tamias striatus, is about 20% below that expected for small mammals. 2. 2. Blocking thyroid secretion results in a 3°C improvement in the vole. and a 2°C improvement in the chipmunk, to the highest air temperature tolerated. 3. 3. Blood levels of thyroxine in both species did not change as a function of ambient temperatures, whereas rates of radioiodine release were reciprocally related to ambient temperature. 4. 4. There was no indication that the thyroid gland of the chipmunk was ever inactive either preceding, or during, hibernation.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Comparative Biochemistry and Physiology -- Part A: Physiology
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
