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狐獴(Suricata suricatta Schreber,1776年)的体温调节

Thermoregulation in the meerkat (Suricata suricatta Schreber, 1776).

作者信息

Müller E F, Lojewski U

出版信息

Comp Biochem Physiol A Comp Physiol. 1986;83(2):217-24. doi: 10.1016/0300-9629(86)90564-5.

DOI:10.1016/0300-9629(86)90564-5
PMID:2869862
Abstract

Tre of the suricates exhibits a marked diurnal rhythm (mean Tre at night 36.3 +/- 0.6 degrees C and 38.3 +/- 0.5 degrees C during the day). Oxygen consumption is lowest at Ta 30-32.5 degrees C (mean 0.365 +/- 0.022 ml O2 g-1 hr-1); this is 42% below the value expected from body mass. At Ta below the TNZ, oxygen uptake rises rapidly, minimal thermal conductance (0.040 ml O2 g-1 h-1 degrees C-1) being 18% above the mass-specific level. Lowest heart rates occur at Ta 30 degrees C (mean 109.6 +/- 9.8 beats min-1) and oxygen pulse is minimal at Ta 30-35 degrees C with 40-45 microliter O2 beat-1. At Ta 15-32.5 degrees C total evaporative water loss is between 0.46-0.63 ml H2O kg-1 hr-1 and increases markedly during heat stress (to a mean of 5.35 ml H2O kg-1 hr-1 at Ta 40 degrees C). This rise of TEWL is mainly attributable to the onset of panting at Ta above 35 degrees C.

摘要

猫鼬的体温呈现出明显的昼夜节律(夜间平均体温为36.3±0.6摄氏度,白天为38.3±0.5摄氏度)。在环境温度30 - 32.5摄氏度时耗氧量最低(平均为0.365±0.022毫升氧气/克体重/小时);这比根据体重预期的值低42%。在环境温度低于热中性区时,氧气摄取量迅速上升,最小热传导率(0.040毫升氧气/克体重/小时/摄氏度)比按体重计算的水平高18%。最低心率出现在环境温度30摄氏度时(平均为109.6±9.8次/分钟),氧脉搏在环境温度30 - 35摄氏度时最小,为40 - 45微升氧气/次心跳。在环境温度15 - 32.5摄氏度时,总蒸发失水量在0.46 - 0.63毫升水/千克体重/小时之间,在热应激期间显著增加(在环境温度40摄氏度时平均达到5.35毫升水/千克体重/小时)。这种总蒸发失水量的增加主要归因于环境温度高于35摄氏度时开始喘气。

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