The reaction to hot atmospheres of various species of australian marsupial and placental animals

Robinson, Kathleen; Morrison, Peter

doi:10.1002/jcp.1030490306

Cited by 82 publications

(41 citation statements)

References 10 publications

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“…This belief is based on questionable results obtained by Martin (1903), who claimed that these animals are poor thermoregulators and their metabolic rate (measured as C0 2 production) is one third that of eutherians. Recent studies have shown that numerous marsupials can regulate their body temperature as efficiently as eutherians (Robinson, 1954;Bartholomew, 1956;Robinson & Morrison, 1957) although their normal body temperature is, indeed, somewhat lower. M a r t i n's statement concerning the low metabolic rate of marsupials could be, therefore, doubted.…”

Section: Data On Metabolic Levels In Some Mammalsmentioning

confidence: 99%

Metabolic levels in adult homeotherms

Poczopko¹

1971

Acta Theriol.

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Section: Data On Metabolic Levels In Some Mammalsmentioning

confidence: 99%

Metabolic levels in adult homeotherms

Poczopko¹

1971

Acta Theriol.

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“…To manage hyperthermia, day roost, then lick the wet fur and wing membranes et al 1971;Welbergen et al 2008). In contrast, bats (Robinson & Morrison 1957;Bartholomew et al 1964) and drink water only when they feed (Neuweiler 2000; P. giganteus but it also provides an opportunity for bats to manage heat stress. So, in the of P. giganteus was adapted to managing hyperthermia…”

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confidence: 99%

The effect of daytime rain on the Indian Flying Fox (Mammalia: Chiroptera: Pteropodidae Pteropus giganteus)

et al. 2016

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<p>Excessive water loss during the day due to heat stress in bats of the genus <em>Pteropus</em> appears to be inevitable, because these bats are exposed to direct sunlight. Rain also affects the rest pattern of the Indian Flying Fox <em>Pteropus giganteus </em>during the day. When rain occurred during the day, most of the bats hung in a slanting position and did not exhibit any movements. After rain, they licked both ventral and dorsal surfaces of the wing membrane and scratched their body with their thumb claws. They also licked the water droplets that remained on the leaves and branches of the tree. Even though their rest had been affected by the rain the bats utilized the water droplets to quench their thirst, cool their body and clean their fur. The construction of water reservoirs near <em>Pteropus </em>roosts will help to assure their long-term conservation.</p><div> </div>

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“…In regard to the grey kangaroos, little has been reported except that they pant and lick. Licking has been suggested to be the grey kangaroo's major route of evaporative heat loss (EHL) at high temperatures (Robertson and Morrison 1957).…”

Section: Introductionmentioning

confidence: 99%

Thermoregulation by Kangaroos from Mesic and Arid Habitats: Influence of Temperature on Routes of Heat Loss in Eastern Grey Kangaroos (Macropus giganteus) and Red Kangaroos (Macropus rufus)

Dawson

Blaney²,

Munn³

et al. 2000

Physiological and Biochemical Zoology

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. (2000). Thermoregulation by kangaroos from mesic and arid habitats: Influence of temperature on routes of heat loss in eastern grey kangaroos (Macropus giganteus) and red kangaroos (Macropus rufus). Physiological and Biochemical Zoology, 73 (3),[374][375][376][377][378][379][380][381] Thermoregulation by kangaroos from mesic and arid habitats: Influence of temperature on routes of heat loss in eastern grey kangaroos (Macropus giganteus) and red kangaroos (Macropus rufus) AbstractWe examined thermoregulation in red kangaroos (Macropus rufus) from deserts and in eastern grey kangaroos (Macropus giganteus) from mesic forests/woodlands. Desert kangaroos have complex evaporative heat loss mechanisms, but the relative importance of these mechanisms is unclear. Little is known of the abilities of grey kangaroos. Our detailed study of these kangaroos' thermoregulatory responses at air temperatures (T-a) From -5 degrees to 45 degrees C showed that, while some differences occur, their abilities are fundamentally similar. Both species show the basic marsupial characteristics of relatively low basal metabolism and body temperature (T-b). Within the thermoneutral zone, T-b was 36.3 degrees +/-0.1 degrees C ((X) over bar +/-SE) in both species, and except for a small rise at T-a 45 degrees C, T-b was stable over a wide range of T-a. Metabolic hear production was 25% higher in red kangaroos at T-a -5 degrees C. At the highest T-a (45 degrees C), both species relied on evaporative heat loss (EHL) to maintain T-b; both panting and licking were used. The eastern grey kangaroo utilised panting (76% of EHL) as the principal mode of EHL, and while this was so for red kangaroos, cutaneous evaporative heat loss (CEHL) was significant (40% of EHL). CEHL appeared to be mainly licking, as evidenced from surface temperatures. Both species utilised peripheral vascular adjustments to control heat flow, as indicated by changes in dry conductance (C-dry). At lower temperatures, C-dry was minimal, but it increased significantly at T-a just below T-b (33 degrees C); in these conditions, the C-dry of red kangaroos was significantly higher than that of eastern grey kangaroos, indicating a greater reliance on dry heat loss. Under conditions where heat flows into the body from the environment (T-a 45 degrees C), there was peripheral vasoconstriction to reduce this inflow; C-dry decreased significantly from the values seen at 33 degrees C in both kangaroos. The results indicated that, while both species have excellent thermoregulatory abilities, the desert red kangaroos may cope better with more extreme temperatures, given that they respond to T-a 45 degrees C with lower respiratory evaporation than do the eastern grey kangaroos. ABSTRACTWe examined thermoregulation in red kangaroos (Macropus rufus) from deserts and in eastern grey kangaroos (Macropus giganteus) from mesic forests/woodlands. Desert kangaroos have complex evaporative heat loss mechanisms, but the relative importance of these mechanisms is unclear. Little is known of the abilities ...

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The reaction to hot atmospheres of various species of australian marsupial and placental animals

Cited by 82 publications

References 10 publications

Metabolic levels in adult homeotherms

Metabolic levels in adult homeotherms

The effect of daytime rain on the Indian Flying Fox (Mammalia: Chiroptera: Pteropodidae Pteropus giganteus)

Thermoregulation by Kangaroos from Mesic and Arid Habitats: Influence of Temperature on Routes of Heat Loss in Eastern Grey Kangaroos (Macropus giganteus) and Red Kangaroos (Macropus rufus)

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