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The stoichiometric approach in determining total evaporative water loss and the relationship between evaporative and non-evaporative heat loss in two resting bird species: passerine and non-passerine

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Chinese Birds 2015年第4期6卷 256-269页

作者： Valery M.Gavrilov Department of Vertebrate Zoology and Skadovsky Zvenigorod Biological Station Lomonosov Moscow State University

Background: Evaporation is of significant ecological *** from an animal always results in a decrease in the temperature of the surface from which the evaporation ***,evaporation is a one-way transfer which causes heat loss from the *** evaporation always involves the loss of water which is a vital resource for nearly all biochemical *** is loss of heat via loss of body ***: The simultaneous determination of energy expenditure and loss of body mass in resting birds allows us to estimate evaporative heat *** method includes direct measurements of the energetic equivalent of the loss of body mass as the ratio between heat production,determined by the rate of oxygen consumption and the loss of body mass at various ambient ***: The data indicate that evaporation was minimal at lower critical temperature and that the rate of evaporation increased at lower or higher *** results indicate that passerine and non-passerine species have the ability to change their non-evaporative heat conductance the same number of times(approximately fourfold),and that their abilities in this respect are ***: The novelty of the study resides in the stoichiometric approach to determination of total evaporative water *** analysis shows that determinations by stoichiometric approach of total evaporative water loss yielded the values,which fit into the confidence intervals of all equations from *** basal metabolic rate and nonevaporative thermal conductance are fundamental parameters of energetics and determine the level of physiological organization of an endothermic animal.

关键词： Water loss Heat dissipation Evaporation Respiration chloris chloris Melopsittacus undulatus Thermoregulation Metabolic rate Stoichiometry

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