EFFECTS OF LONG SCOTOPHASE AND COLD-ACCLIMATION ON HEAT-PRODUCTION IN 2 DIURNAL RODENTS
EFFECTS OF LONG SCOTOPHASE AND COLD-ACCLIMATION ON HEAT-PRODUCTION IN 2 DIURNAL RODENTS
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DOI：
10.1007/bf00688890
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发表时间：
1982-01-01
期刊：
影响因子：
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通讯作者：
HAIM, A
中科院分区：
文献类型：
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作者：
HAIM, A
在长暗相-LS（8L：16 D; 25 ° C）中测量2种昼行啮齿动物，小杆鼠（Rhabdomys pumilio）和灰水鼠（Lenniscomys griselda）的产热（VO 2）。C）驯化和长暗期和冷sbdLSAC（8L：16 D; C）驯化的动物，并与对照组（12 L：12 D; 25 ° C）进行比较。C）。LS在两个物种中增加了VO 2。对LSAC的进一步驯化增加了R. pumilio和降低.ovrhdot.VO2在L.格里塞尔达。LS可使L.只有格里塞尔达。LS增加了这两个物种的整体热导率。LSAC导致R中该参数的进一步增加。pumilio。由于LS驯化，在两个物种中观察到最大非颤抖性产热（NST）的幅度显著增加（P < 0.001）。LSAC不改变这一最大NST，但增加了其专性部分（最小）。griselda，P < 0.001; pumilio）。冬季驯化的产热机制，在这两个物种，可能是由于延长暗相。
Heat production (.ovrhdot.VO2) of 2 diurnal rodents, Rhabdomys pumilio and Lemniscomys griselda, was measured in long scotophase -LS (8L:16D; 25.degree. C) acclimated and long scotophase and cold.sbd.LSAC (8L:16D; 6.degree. C) acclimated animals and compared to a control group (12L:12D; 25.degree. C). LS increased .ovrhdot.VO2 in both species. Further acclimation to LSAC increased .ovrhdot.VO2 in R. pumilio and decreased .ovrhdot.VO2 in L. griselda. LS increased body temperature (Tb) in L. griselda only. LS increased overall thermal conductance in both species. LSAC caused a further increase in this parameter in R. pumilio. A significant (P < 0.001) increase in the magnitude of maximal nonshivering thermogenesis (NST) was observed in both species due to LS acclimation. LSAC did not change this maximal NST but increased its obligatory part (minimal .ovrhdot.VO2, P < 0.05, in L. griselda, and P < 0.001, in R. pumilio). Winter acclimatization of heat production mechanisms, in both species, may be due to extension of scotophase.