Heat balance of acclimated pigeons (Columba livia) exposed to temperatures up to 60°c ta

Avian thermoregulation in the heat: is evaporative cooling more economical in nocturnal birds?

“…between nocturnal and diurnal birds was particularly influenced by the high EHL/MHP values of columbids, a result that supports earlier findings that caprimulgids and columbids exhibit high EHL/ MHP ratios (e.g. Bartholomew et al, 1962;Dawson and Fisher, 1969;Dawson and Bennett, 1973;Marder and Arieli, 1988;McKechnie et al, 2016). The extraordinary effectiveness of evaporative cooling among caprimulgids and columbids presumably stems in part from their capacity to dissipate heat by gular flutter and cutaneous evaporation, respectively, which manifests in a rapid elevation in EWL with little or no metabolic cost (Lasiewski and Bartholomew, 1966;Dawson and Fisher, 1969;Marder and Arieli, 1988;Marder et al, 2003;McKechnie and Wolf, 2004b).…”

Avian thermoregulation in the heat: is evaporative cooling more economical in nocturnal birds?

“…between nocturnal and diurnal birds was particularly influenced by the high EHL/MHP values of columbids, a result that supports earlier findings that caprimulgids and columbids exhibit high EHL/ MHP ratios (e.g. Bartholomew et al, 1962;Dawson and Fisher, 1969;Dawson and Bennett, 1973;Marder and Arieli, 1988;McKechnie et al, 2016). The extraordinary effectiveness of evaporative cooling among caprimulgids and columbids presumably stems in part from their capacity to dissipate heat by gular flutter and cutaneous evaporation, respectively, which manifests in a rapid elevation in EWL with little or no metabolic cost (Lasiewski and Bartholomew, 1966;Dawson and Fisher, 1969;Marder and Arieli, 1988;Marder et al, 2003;McKechnie and Wolf, 2004b).…”

Avian thermoregulation in the heat: is evaporative cooling more economical in nocturnal birds?

“…We did not find consistent support for our prediction that nocturnal species have higher EHL/MHP ratios at a given T a compared to diurnal species of comparable mass. The distinction between nocturnal and diurnal birds was particularly influenced by the high EHL/MHP values of columbids, a result supporting earlier studies that found both caprimulgids and columbids to exhibit high EHL/MHP (e.g., Bartholomew et al, 1962; Dawson and Fisher, 1969; Dawson and Bennett, 1973; Marder and Arieli, 1988; McKechnie et al, 2016a). The extraordinary effectiveness of evaporative cooling among caprimulgids and columbids presumably stems in part from their capacity to dissipate heat by gular flutter and cutaneous evaporation, respectively, which manifests in a rapid elevation in EWL with little or no metabolic cost (Lasiewski and Bartholomew, 1966; Dawson and Fisher, 1969; Marder and Arieli, 1988; Marder et al, 2003; McKechnie and Wolf, 2004b).…”

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

“…The Tb values we observed in heat-acclimated white-winged doves were similar to those reported by Marder and Arieli (1988) for heat-acclimated rock doves (Columba livia) at 30°C > Ta > 60°C. At Ta=45°C, the mean Tb of cool-acclimated white-winged doves (42.9±0.4°C) was slightly lower than that observed in non-acclimated C. livia (43.4±0.7°C; Marder and Arieli, 1988).…”

Avian thermoregulation in the heat: is evaporative cooling more economical in nocturnal birds?

“…between nocturnal and diurnal birds was particularly influenced by the high EHL/MHP values of columbids, a result that supports earlier findings that caprimulgids and columbids exhibit high EHL/ MHP ratios (e.g. Bartholomew et al, 1962;Dawson and Fisher, 1969;Dawson and Bennett, 1973;Marder and Arieli, 1988;McKechnie et al, 2016). The extraordinary effectiveness of evaporative cooling among caprimulgids and columbids presumably stems in part from their capacity to dissipate heat by gular flutter and cutaneous evaporation, respectively, which manifests in a rapid elevation in EWL with little or no metabolic cost (Lasiewski and Bartholomew, 1966;Dawson and Fisher, 1969;Marder and Arieli, 1988;Marder et al, 2003;McKechnie and Wolf, 2004b).…”

Avian thermoregulation in the heat: is evaporative cooling more economical in nocturnal birds?

“…We did not find consistent support for our prediction that nocturnal species have higher EHL/MHP ratios at a given T a compared to diurnal species of comparable mass. The distinction between nocturnal and diurnal birds was particularly influenced by the high EHL/MHP values of columbids, a result supporting earlier studies that found both caprimulgids and columbids to exhibit high EHL/MHP (e.g., Bartholomew et al, 1962; Dawson and Fisher, 1969; Dawson and Bennett, 1973; Marder and Arieli, 1988; McKechnie et al, 2016a). The extraordinary effectiveness of evaporative cooling among caprimulgids and columbids presumably stems in part from their capacity to dissipate heat by gular flutter and cutaneous evaporation, respectively, which manifests in a rapid elevation in EWL with little or no metabolic cost (Lasiewski and Bartholomew, 1966; Dawson and Fisher, 1969; Marder and Arieli, 1988; Marder et al, 2003; McKechnie and Wolf, 2004b).…”

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

“…The Tb values we observed in heat-acclimated white-winged doves were similar to those reported by Marder and Arieli (1988) for heat-acclimated rock doves (Columba livia) at 30°C > Ta > 60°C. At Ta=45°C, the mean Tb of cool-acclimated white-winged doves (42.9±0.4°C) was slightly lower than that observed in non-acclimated C. livia (43.4±0.7°C; Marder and Arieli, 1988).…”

Avian thermoregulation in the heat: is evaporative cooling more economical in nocturnal birds?

“…between nocturnal and diurnal birds was particularly influenced by the high EHL/MHP values of columbids, a result that supports earlier findings that caprimulgids and columbids exhibit high EHL/ MHP ratios (e.g. Bartholomew et al, 1962;Dawson and Fisher, 1969;Dawson and Bennett, 1973;Marder and Arieli, 1988;McKechnie et al, 2016). The extraordinary effectiveness of evaporative cooling among caprimulgids and columbids presumably stems in part from their capacity to dissipate heat by gular flutter and cutaneous evaporation, respectively, which manifests in a rapid elevation in EWL with little or no metabolic cost (Lasiewski and Bartholomew, 1966;Dawson and Fisher, 1969;Marder and Arieli, 1988;Marder et al, 2003;McKechnie and Wolf, 2004b).…”

Avian thermoregulation in the heat: is evaporative cooling more economical in nocturnal birds?

“…We did not find consistent support for our prediction that nocturnal species have higher EHL/MHP ratios at a given T a compared to diurnal species of comparable mass. The distinction between nocturnal and diurnal birds was particularly influenced by the high EHL/MHP values of columbids, a result supporting earlier studies that found both caprimulgids and columbids to exhibit high EHL/MHP (e.g., Bartholomew et al, 1962; Dawson and Fisher, 1969; Dawson and Bennett, 1973; Marder and Arieli, 1988; McKechnie et al, 2016a). The extraordinary effectiveness of evaporative cooling among caprimulgids and columbids presumably stems in part from their capacity to dissipate heat by gular flutter and cutaneous evaporation, respectively, which manifests in a rapid elevation in EWL with little or no metabolic cost (Lasiewski and Bartholomew, 1966; Dawson and Fisher, 1969; Marder and Arieli, 1988; Marder et al, 2003; McKechnie and Wolf, 2004b).…”

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

“…The Tb values we observed in heat-acclimated white-winged doves were similar to those reported by Marder and Arieli (1988) for heat-acclimated rock doves (Columba livia) at 30°C > Ta > 60°C. At Ta=45°C, the mean Tb of cool-acclimated white-winged doves (42.9±0.4°C) was slightly lower than that observed in non-acclimated C. livia (43.4±0.7°C; Marder and Arieli, 1988).…”