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Marsupial uncoupling protein 1 sheds light on the evolution of mammalian nonshivering thermogenesis.
Brown adipose tissue expressing uncoupling protein 1 (UCP1) is responsible for adaptive nonshivering thermogenesis giving eutherian mammals crucial advantage to survive the cold. The emergence ofExpand
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Daily and Seasonal Rhythms in Selected Body Temperatures in the Australian Lizard Tiliqua rugosa (Scincidae): Field and Laboratory Observations
This study examined daily and seasonal activity and thermoregu‐latory behaviour of the sleepy lizard, Tiliqua rugosa, a large, diurnally active temperate‐dwelling Australian lizard, in the field andExpand
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CIRCADIAN RHYTHM OF BEHAVIORAL THERMOREGULATION IN THE SLEEPY LIZARD (TILIQUA RUGOSA)
The daily rhythm of behavioral thermoregulation in sleepy lizards (Tiliqua rugosa) was studied in laboratory thermal gradients under a 12L∶12D photoperiod in autumn and spring. In both seasons,Expand
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Panting thresholds of lizards. I. Some methodological and internal influences on the panting threshold of an agamid, Amphibolurus muricatus.
Abstract 1. 1. Amphibolous muricatus undergoes thermal panting at body temperatures of approximately 40°C. 2. 2. Body size, site of temperature measurement, sex, moulting and rate and method ofExpand
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Panting thresholds of lizards. II. Diel variation in the panting threshold of Amphibolurus muricatus.
Abstract 1. 1. Panting threshold of Amphibolurus muricatus varies with time of day. 2. 2. Diurnal panting thresholds are higher than nocturnal ones (P
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Pineal control of the circadian rhythm of colour change in the killifish (Fundulus heteroclitus)
The killifish, Fundulus heteroclitus, displays a circadian rhythm of colour change (pigment aggregation and dispersion) under constant light and temperature conditions. Pinealectomy eliminates theExpand
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Voluntary Maximum Temperature of the Jackie Lizard, Amphibolurus muricatus
Intact individuals of the agamid lizard Amphibolurus muricatus have a mean voluntary maximum temperature (VMax) of 34.5-38.4 C depending on season. Animals caught in the autumn have a lower VMax thanExpand
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Head-Body Temperature Differences in Lizards
Head-body temperature differences have been reported in a number of lizards and snakes (Heath 1964; DeWitt 1967; Hammel, Caldwell, and Abrams 1967; Campbell 1969; Webb and Heatwole 1971). A mechanismExpand
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Plasma melatonin in the scincid lizard, Trachydosaurus rugosus: diel rhythm, seasonality, and the effect of constant light and constant darkness.
Abstract Melatonin was assayed in the plasma of the scincid lizard, Trachydosaurus rugosus , using a specific radioimmunoassay. The levels of this indole exhibited a daily fluctuation similar to thatExpand
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Melatonin content of the pineal, parietal eye and blood plasma of the lizard,Trachydosaurus rugosus: effect of constant and fluctuating temperature
Lizards acclimated to a light cycle accompanied by a thermocycle of 30 degrees C/15 degrees C had a more robust rhythm in pineal and plasma melatonin levels than those acclimated to constant 30Expand
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