Energy expenditure in wild birds
Energy expenditure in wild birds
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DOI：
10.1079/pns19970107
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发表时间：
1997-11-01
影响因子：
7
通讯作者：
Bryant, DM
中科院分区：
文献类型：
--
作者：
Bryant, DM
方法本研究中使用的所有能量消耗估计值均通过使用双标记水（DLW）技术从野生鸟类获得（Lifson & McClintock，1966；Nagy，1980；Bryant，1989；Tatner & Bryant，1989）。该技术产生对CO 2 产生的可靠、直接的估计，由此使用公认的间接量热法惯例来计算能量消耗（Brody，1945；Blaxter，1989；Speakman＆Racey，1988）。研究中对个体鸡的测量通常持续 1-2 天；时间跨度受其小 W 的限制。现场和实验室方法的详细信息可以在附录中引用的来源中找到。统计分析仅限于体重低于 150 克的物种（附录），因为排除更广泛的体型范围会降低将能量消耗变化的原因与生活史的潜在微妙后果相混淆的风险 https://doi。 org/10.1079/PNS19970107 由剑桥大学出版社在线出版
METHODSAll estimates of energy expenditure used in the present study were obtained from wild birds by using the doubly-labelled water (DLW) technique (Lifson & McClintock, 1966; Nagy, 1980; Bryant, 1989; Tatner & Bryant, 1989). The technique yields reliable, direct, estimates of C02 production from which energy expenditure is calculated using the accepted conventions of indirect calorimetry (Brody, 1945; Blaxter, 1989, Speakman & Racey, 1988). Measurements on individual birds in the study were generally made over periods of 1-2d; a time-span constrained by their small W. Details of field and laboratory methods may be found in the sources quoted in the Appendix. Statistical analysis was restricted to species weighing under 150 g (Appendix), because exclusion of a wider body-size range reduced the risk of confounding the causes of variation in energy expenditure with the potentially subtle consequences of life-history https://doi. org/10.1079/PNS19970107 Published online by Cambridge University Press