Journal of Stress Physiology &
Biochemistry, Vol. 9 No. 1
2013, pp. 148-156 ISSN 1997-0838
Original Text Copyright (cc) 2013 by Zhu, Mu, Zhang and Wang
ORIGINAL
ARTICLE
Data source : Google Scholar
QueryDate : 2016-12-24
Cites : 1
Effect of temperature on body
temperature and resting metabolic rate in pups of Eothenomys miletus
Zhu Wan-Long&, Mu Yuan&,
Zhang Lin, Wang Zheng-Kun *
School of life Science of Yunnan Normal University, 650092, China & Wan-Long Zhu and Yuan Mu contributed equally to this
work.
Tel.: +86 0871 5516068
*E-Mail: zwl_8307@163.com
Received October 22, 2012
In order to
investigate the ability of ambient temperature and thermoregulation
in Eothenomys miletus,
body temperature and resting metabolic rate (RMR) were measured during
postnatal development (1-49 day) when E.
miletus exposed different ambient temperature. The result showed
that: body temperature and RMR of pups in E. miletus increased according to
the increase of ambient temperature during 1 day to 7 day, showed
character of poikilotherms; body temperature of pups were lower in low
temperature (5 oC, 10 oC), relatively and RMR
increased significantly when day age is 14 day, it indicated that the
pups showed a certain degree of thermoregulation in this phase. Its
thermoregulation ability developed quickly during 7 day to 14 day. RMR
of pups was extreme significantly higher in low temperature than that
in other temperature when day age was 21 day, it showed that the pups
had some thermoregulation to low temperature stimulation. The RMR of
pups was showed increasing trend in high temperature (35 oC)
when 28 day; on 35 day and 42 day, the thermal neutral zone were 22.5
to 30 oC and approaching its adult level. All of these
results indicated that pups of E.
miletus in the different growing period had different
thermogenesis and energy allocation to maintain stable to body
temperature, thermogenesis was weaker in the early phase of postnatal
development, most of energy is used to its growth. After pups were
weaned, the ability of constant temperature and thermoregulation
developed quickly to adjust variations of environment during postnatal
development.
Key
words: Eothenomys miletus; Body temperature; Resting metabolic rate
