Temperature regulation in the exercising rabbit

Kluger, MJ; Rr, Gonzalez; Stolwijk, JA

doi:10.1152/ajplegacy.1973.224.1.130

Cited by 31 publications

(12 citation statements)

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“…Although other recent studies include thermoregulatory data on leporids, they are not discussed here because their emphasis was not on seasonal changes (Gonzales et al 1971, Kluger et al 1973).…”

Section: Introductionmentioning

confidence: 99%

Acclimatization of Thermoregulation in Desert‐Inhabiting Jackrabbits(Lepus Alleni and Lepus Californicus

Hinds¹

1977

Ecology

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Seasonal physiological responses to ambient temperature were determined for the black‐tailed jackrabbit, Lepus californicus and the antelope jackrabbit, Lepus alieni at Tucson, Arizona. Both species exhibited similar responses to changes in season although differences were noted. From winter to summer the thermoneutral zone shifted upwards, with the shift occurring at both critical temperatures in L. californicus and at only the lower critical temperature in L. alieni. Standard metabolism above thermoneutrality was higher in winter than in summer, while below thermoneutrality it was lower in winter than in summer. Basal metabolism in winter was 15% lower in L. alieni and only slightly lower in L. californicus. Water losses during the summer were higher than in winter at ambient temperatures below 20°C and lower at the higher air temperatures. During both seasons all metabolic heat production was dissipated by evaporative heat Joss at an ambient temperature of ≈ 40°C. Seasonal differences in body temperature were not apparent except that in summer L. alieni exhibited hypothermia at ambient temperatures < 20°C. The dry‐heat‐transfer coefficients were higher during summer below 30°C; they also increased at higher ambient temperatures than in winter and at a faster rate. The dry‐heat‐transfer coefficient in L. alieni decreased during summer when ambient exceeded body temperature. This was not the case in winter for L. alieni or in either season for L. californicus.

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Section: Introductionmentioning

confidence: 99%

Acclimatization of Thermoregulation in Desert‐Inhabiting Jackrabbits(Lepus Alleni and Lepus Californicus

Hinds¹

1977

Ecology

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“…This is to be expected, since the smaller body mass of these animals should theoretically result in a more rapid temperature change with increases in metabolism. To date, most research relating activity to body-temperature fluctuations in small mammals has been confined to treadmill experiments in the laboratory (Yousef et al 1973 ;Kluger et al 1973;Wunder 1970;Gollnick and Ianuzzo 1968 ;Hart and Jansky 1963 ;Hart and Heroux 1955). Information obtained from such studies has broadened our understanding as to the capability of the experimental animal in temperature regulation under different work intensities at various ambient temperatures.…”

Section: Introductionmentioning

confidence: 99%

Behavioral thermoregulation in the pika Ochotona princeps: a field study using radiotelemetry

MacArthur¹,

Wang²

1974

Can. J. Zool.

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1974. Behavioral thermoregulation in the pika Ochotona princeps: a field study using radiotelemetry. Can. J. Zool. 52: 353-358. When either the level or duration of spontaneous activity is increased over an ambient temperature range of 2-2PC, tlie body temperalure of the ~k a shows e slight increase; the maximum Ourtua~ion obrerved war I.OC. Hawurer. none o?thr changer in body temperature proved to be significantly different from thal of the resting state (P < 0.05).In nature, pihas avoid hyperthermia I?y means of precise behavioral thermoregulation in which both dura~ion and levcl OF actlrity are regulated. A negative correlation was observed between the duration of time spent on the surface of the rocks, and the surface ambient temperature, over R range of 3-27C. Between 0930 and 1930 h, as the surface ambient temperature increased. ihe percentage of obscrvat~ons I n which the pika was below the rocks increased. and vice versa. By engaging in short bursrs of surface ac~ivity (usually Iess than a 3.5-min duration) followed by retreal to the cooler micrmlima~e beneath the rocks. pikas 8Fe able lo regulate their lmdy temperature precisely at a level only 2-?C hlow the upper lethal temperature. -MACARTHUR, R. A., et L. C. H. WANG. 1974. Behavioral thermoregulation in the pika Ochotona princeps: a field study using radiotelemetry. Can. J. Zool. 52: 353-358. Chez I'ochotone, lorsque l'intensitt ou la durCe de I'activitt spontank augmente, h une tempirature ambiante situte entre 2-28C, la temperature du corps augmente lkgkrement, la fluctuation maximale observk &ant de l.O°C. Ce ndant, aucun des changements de temphature du corps nest signfiativement different de etempirature au repos (P < 0.05). En nature, les ochotones Bvitent I'hyperthermie ar une r y l a t i o n thermique ricise.~socik au comportement et pendant laquelle sont c o n t r k s et la uree et I'intens~ti fe I'achv~tk. On constate une correlation negative entre la d u r k du tem s pass6 i la surface des rochers et la temperature arnbiante de surface, entre 3-27C. Entre 09f0 et 1930 h, ti mesure qu'aumente la temperature ambiante de surface, le pourcenta e de temps pass6 sous les rocheis au-pente et vice verw. En se limitant 21 de courtes ~eriodes jactivitt! en surface (ordinairement moms de 3.5rnin) suivies d'un retour i un microclimat plus frais, sous les rochers, les ochotones arrivent ? i contrbler la temperature de leur corps de fafon prkise, B un niveau de seulement 2-3C sous la tempirature letale supirieure.vraduit par le journal]

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“…Different superscript letters indicate significant differences (P , 0.05) between treatments within a parameter as determined by post hoc analysis. have lower T b s than active animals because activity correlates with T b (Bolles et al 1968;Kluger et al 1973;Refinetti and Menaker 1992). A short bout of daily exercise did have the expected effect of increasing maximum T b (Brooks et al 1971).…”

Section: Discussionmentioning

confidence: 88%

Advantage to lower body temperatures for a small mammal (Rattus fuscipes) experiencing chronic cold

Glanville¹,

Seebacher²

2010

J Mammal

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Temperature regulation in the exercising rabbit

Cited by 31 publications

References 0 publications

Acclimatization of Thermoregulation in Desert‐Inhabiting Jackrabbits(Lepus Alleni and Lepus Californicus

Acclimatization of Thermoregulation in Desert‐Inhabiting Jackrabbits(Lepus Alleni and Lepus Californicus

Behavioral thermoregulation in the pika Ochotona princeps: a field study using radiotelemetry

Advantage to lower body temperatures for a small mammal (Rattus fuscipes) experiencing chronic cold

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