笼养黑颈长尾雉和白颈长尾雉代谢产热特征及体温调节(英文)

采用封闭式流体压力呼吸仪,在5～35℃的环境温度范围内测定了黑颈长尾雉(Syrmaticushumiae)和白颈长尾雉(Syrmaticusellioti)的代谢率(MR)、热传导(C)和体温(Tb)等指标,探讨了其代谢产热特征。结果显示:黑颈长尾雉和白颈长尾雉的热中性区(TNZ)分别为24.5～31.6℃和23.0～29.2℃。在5～35℃的温度范围内,黑颈长尾雉和白颈长尾雉能保持稳定的体温,分别为(40.47±0.64)和(40.36±0.10)℃;在热中性区内,黑颈长尾雉和白颈长尾雉的平均基础代谢率(BMR)分别为(1.36±0.84)和(2.03±0.12)mLO2/(g.h),分别是体重预期值的77%和86%。在下临界温度以下,黑颈长尾雉和白颈长尾雉的最小热传导分别是(0.12±0.01)和(0.17±0.01)mLO2/(g.h.℃),分别是体重预期值的119%和124%。这两种鸟的生理生态学特征是:黑颈长尾雉和白颈长尾雉都具有较低的代谢率,较高的体温和热传导,能较好地适应南方湿热的气候特征。

Metabolism and thermoregulation between Mrs Hume's Pheasant (Syrmaticus humiae) and Elliot's Pheasant (S. ellioti)

To understand metabolic adaptations,the basal metabolic rate (BMR) of Mrs Hume's Pheasant (Syrmaticus humiae) and Elliot's Pheasant (Syrmaticus ellioti) were investigated.Metabolic rate (MR),body temperature(Tb) and thermal conductance (C) were determined in both species at a temperatrue range of 5 - 35 ℃,respectively.Oxygen consumption was measured with a closed circuit respirometer.The thermal neutral zones (TNZ) were 24.5 - 31.6℃,and 23.0 -29.2 ℃,respectively.With a temperature range of 5 - 35 ℃,Mrs Hume's Pheasant and Elliot's Pheasant could maintained stable Tb at a mean of (40.47±0.64) and (40.36±0.10) ℃,respectively.Mean BMRs within TNZs were(1.36±0.84) mLO2/(g·h) for Mrs Hume's Pheasant and (2.03±0.12) mLO2/(g·h) for Elliot's Pheasant,which were 77％ and 86％ of the expected value based on their body mass,respectively.Thermal conductance of Mrs Hume's Pheasant and Elliot's Pheasant were (0.12±0.01) and (0.17±0.01) mLO2/(g·h· ℃),below the lower critical temperature,respectively,which were 119％ and 124％ of the expected value based on their body mass,respectively.The ecophysiological characteristics of these species were low metabolic rate,high body temperature,and high thermal conductance,which allow both species to better adapt to the warmer climate environment in south China.