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First published online December 10, 2003
Journal of Experimental Biology 207, 203-210 (2004)
Published by The Company of Biologists 2004
doi: 10.1242/jeb.00757

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Partitioning of evaporative water loss in white-winged doves: plasticity in response to short-term thermal acclimation

Andrew E. McKechnie^* and Blair O. Wolf

UNM Biology Department, MSC03-2020, 1 University of New Mexico, Albuquerque, NM 87131-0001, USA

View larger version (20K): [in a new window]   Fig. 1. Mean total evaporative water loss (A), respiratory evaporative water loss (B) and cutaneous evaporative water loss (C) (mg H2O g-1 body mass h-1) as a function of air temperature in cool- and heat-acclimated western white-winged doves Zenaida asiatica mearnsii. The error bars represent 95% confidence intervals. *Significant difference between values (P<0.05).

View larger version (18K): [in a new window]   Fig. 2. The contribution of cutaneous evaporation to total evaporative water loss at three experimental air temperatures in cool- and heat-acclimated western white-winged doves Zenaida asiatica mearnsii. The error bars represent 95% confidence intervals. *Significant difference between values (P<0.001).

View larger version (16K): [in a new window]   Fig. 3. Mean metabolic rate as a function of air temperature in cool- and heat-acclimated western white-winged doves Zenaida asiatica mearnsii. The error bars represent 95% confidence intervals. *Significant difference between values (P<0.05).

View larger version (19K): [in a new window]   Fig. 4. Whole-body water vapour diffusion resistance rv as a function of air temperature in cool- and heat-acclimated western white-winged doves Zenaida asiatica mearnsii. The solid lines are linear regressions fitted to the data. The regression for the heat-acclimated doves (lower line) is rv=536.59-11.01Ta (r2=0.634) and that for the cool-acclimated doves (upper line) is rv=529.06-9.22Ta (r2=0.395). The slopes of these regressions did not differ significantly.