Avian thermoregulation
Avian thermoregulation in the heat: resting metabolism, evaporative cooling and heat tolerance in Sonoran Desert doves and quail
... on thermoregulation in birds, our information on the thermoregulatory performance of wild birds exposed to air temperatures above body temperature is ...on avian thermoregulation in the heat focused ...
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Avian thermoregulation in the heat: scaling of heat tolerance and evaporative cooling capacity in three southern African arid zone passerines
... variables related to body condition (du Plessis et al., 2012) and provisioning rates during breeding (Cunningham et al., 2013), suggesting that in many cases, detailed models of specific determinants of survival and/or ...
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Avian thermoregulation in the heat: resting metabolism, evaporative cooling and heat tolerance in Sonoran Desert songbirds
... Early studies during the 1950s and 1960s by G. A. Bartholomew, W. R. Dawson and their students in the deserts of the southwestern United States described some of the basic patterns of thermoregulation in birds ...
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Avian thermoregulation in the heat: evaporative cooling in five Australian passerines reveals within order biogeographic variation in heat tolerance
... of avian physiology and life ...within avian taxa is vital for developing mechanistic, physiologically informed models predicting how arid-zone avifaunas will respond to the higher maximum T a and more ...
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Avian thermoregulation in the heat: efficient evaporative cooling allows for extreme heat tolerance in four southern hemisphere columbids
... To understand the ecological significance of phylogenetic variation in avian evaporative cooling pathways, we need to extrapolate laboratory data on acute heat stress to natural conditions. The goal of the present ...
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Cloacal evaporation: an important and previously undescribed mechanism for avian thermoregulation
... of avian evaporation was driven by the anatomical discovery that birds do not possess sweat glands; workers therefore assumed that a lack of sweat glands indicated a corresponding lack of evaporation from the ...
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Avian thermoregulation in the heat: evaporative cooling capacity in an archetypal desert specialist, Burchell's sandgrouse (Pterocles burchelli)
... P. burchelli was much steeper than predicted by a recent analysis of the scaling of avian EWL (McKechnie and Wolf, 2010, see their supplementary material). The observed slope of 2.354 mg g −1 h −1 °C −1 is ...
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Avian thermoregulation in the heat: is evaporative cooling more economical in nocturnal birds?
... We acknowledge that our sample size of 39 species is relatively small for a phylogenetic analysis, particularly when compared with past avian EWL reviews (e.g. Crawford and Lasiewski, 1968; Williams, 1996). ...
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Avian thermoregulation in the heat: evaporative cooling capacity of arid zone Caprimulgiformes from two continents
... of avian heat dissipation, the gular flutter mechanism may be of particular interest because observations suggest that it is a highly efficient mechanism that maximizes evaporative water loss (EWL) without greatly ...
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Avian thermoregulation in the heat: phylogenetic variation among avian orders in evaporative cooling capacity and heat tolerance
... of avian respiratory EHL pathways is interesting, and there is no clear explanation for the dichotomy between gular flutter and panting among avian ...only avian taxon in which lingual flutter ...
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Avian thermoregulation in the heat: metabolism, evaporative cooling and gular flutter in two small owls
... diverse avian taxa for enhancing the efficiency of evaporative ...other avian orders, is highly limited and a better understanding of their thermal constraints will aid in modeling the effects of climate ...
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Avian thermoregulation in the heat: evaporative cooling capacity and thermal tolerance in two Australian parrots
... between avian heat tolerance physiology and drinking behavior patterns remain ...of thermoregulation in parrots exposed to high T a , indicate that they may be more vulnerable than taxa ...
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Orientation to the sun by animals and its interaction with crypsis
... We have considered three types of selective pressure in which animal coloration plays a central role. We have shown that orientation with respect to the sun is of pri- mary importance for carrying out these diverse ...
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Seasonal adjustment of energy budget in a large wild mammal, the Przewalski horse (Equus ferus przewalskii) II Energy expenditure
... fluctuations of metabolic rate (MR). It has been argued, based on studies in ruminants, that this variation merely results from different levels of locomotor activity (LA), and heat increment of feeding (HI). However, a ...
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Thermoregulation in pronghorn antelope (Antilocapra americana, Ord) in winter
... of thermoregulation in temperate zone winters in large animals and their contribution to survival are less well ...of thermoregulation in winter in northern hemisphere artiodactyls a relatively constant ...
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Heat, health, and humidity in Australia's monsoon tropics: a critical review of the problematization of 'heat' in a changing climate
... Here, the (in)visibility of humidity in the account of heat has a major effect on types of strate- gies pursued. From the limited data available, work- ing at low to moderate intensities and self-pacing one ’ s effort ...
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Solutions from nature for building envelope thermoregulation
... Thermoregulation is the action of keeping inner temperature levels of an organism within certain boundaries (the balance between heat gains and losses) despite of having changing temperatures in the surrounding ...
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Physiological effects of thermoregulation in transitional ELBW infants
... immature thermoregulation, thin skin and a large body surface area to weight ratio, they can also take on too much heat from a heat- enriched environment and become hyperthermic (too high a body ...
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Mobility routing optimization for physical accessibility and thermoregulation
... As routing applications become common on mobile devices, significant problems that remain are the sparse underlying data support for pedestrian-based routing and the inability to customize an existing route for specific ...
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Effects of Cold Exposure on Oxygen Consumption, Ventilation and Interclavicular Air Sac Gases in the Little Penguin(Eudyptula Minor)
... Introduction It is well established that the avian respiratory system plays an important part in thermoregulation during heat stress, but the interaction between respiration and temperat[r] ...
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