We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Resting energy metabolism of Goeldi's monkey (Callimico goeldii ) is similar to that of Other callitrichids.
- Authors
Power, Michael L.; Tardif, Suzette D.; Power, Rachel A.; Layne, Donna G.
- Abstract
The resting metabolic rates (RMRs) of six adult Goeldi's monkeys (Callimico goeldii ) were measured using standard methods of open circuit respirometry during both the active (daytime) and inactive (nighttime) circadian phases for this species. One subject was measured both while she was pregnant and after she delivered a full-term, stillborn infant. Inactive-phase RMR within thermal neutrality (above 27.5°C) averaged 288.5±30.8 ml O[sub 2] /hr; active-phase RMR within thermal neutrality averaged 416.3±60.9 ml O[sub 2] /hr. These values are 74.6% and 107.6%, respectively, of the mammalian expected for animals of this body mass. During the inactive phase, metabolic rate increased an estimated 4.3% for every degree decline in temperature below 27.5°C. The RMR in Goeldi's monkey is similar quantitatively and qualitatively to those of other captive callitrichids that have been studied, with active-phase RMR being at or slightly above the mammalian expected, and inactive-phase RMR being significantly reduced. We propose that this circadian pattern of RMR is a consequence of small body size, and is not a specific metabolic adaptation within the Callitrichidae. Thus we predict that metabolic studies measuring both circadian phases in other small primates will also find this pattern of reduced RMR during the inactive phase. The inactive-phase RMR within thermal neutrality of the pregnant female was not different from that measured after the stillbirth, despite an almost 15% difference in body mass. During pregnancy, however, the female was more metabolically responsive to temperature below thermal neutrality, and had a lower upper critical temperature (i.e., was less tolerant of heat). Am. J. Primatol. 60:57–67, 2003. © 2003 Wiley-Liss, Inc.
- Subjects
PRIMATES; GOELDI'S marmoset; CIRCADIAN rhythms; BODY weight; HEART metabolism
- Publication
American Journal of Primatology, 2003, Vol 60, Issue 2, p57
- ISSN
0275-2565
- Publication type
Article
- DOI
10.1002/ajp.10078