Growth and the Development of Temperature Regulation in the Tundra Redback Vole

Morrison, Peter; Ryser, Fred A.; Strecker, Robert L.

doi:10.2307/1375962

Cited by 42 publications

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“…In those cases where the male was not separated from the female and young, he assisted in caring for the litter and spent apPl'oximately the same time in the nest as did the female. Morrison et al (1954) reported similar results for the tundra red-backed vole, although only maternal care of the young occurred. It is unlikely that the body temperatures of neonate gerbils ever would fall much below 30°C because in addition to the insulation provided by the nest, the location of the nest in burrow systems that may be quite extensive (Bannikov, 1954;Grasse, 1955) would reduce or possibly eliminate any fluctuations in ambient temperature near the nest.…”

Section: Discussionsupporting

confidence: 54%

“…-Fig s. 1 and 2 summarize the changes seen in weight and length of young gerbils at ages of 0 to 4 weeks. The features measured appear essentially linear in their increase for the first 4 weeks; such linearity also has been noted in the early growth of Clethrionomy s rutiltts, Dicrostonyx rubricatus, and Microtus oeconomus (Morrison et al, 1954). At 15 weeks of age, a sample of 65 adult gerbils averaged 220.0 ± SD 9.1 millimeters in total length, 118.7 ± 5.2 in body length, 101.3 ± 4.7 in tail length, 30.1 ± 0.9 jn hind foot length, 13.8 ± 0.5 in ear length, and 58.8 ± 6.3 grams in weight.…”

Section: Growth and Developmentsupporting

confidence: 60%

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Early Postnatal Growth and the Development of Temperature Regulation in the Mongolian Gerbil, Meriones unguiculatus

McManus

1971

Journal of Mammalogy

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The growth and development of young in 22 litters of Mongolian gerbils, Meriones unguiculatus, were studied for a period of 4 weeks after birth. Data on body weight and on total, body, tail, hind foot, and ear length are given.The early development of the pelage, ears, eyes, teeth, and general behavior are correlated with the development of temperature regulation, as studied in 10 litters. From birth to about day 13 the neonate gerbil is essentially ectothennic. Between days 13 and 14 and weaning, which occurs about day 21, there is a rapid development of endothermy. The latter period is also characterized by the eruption of teeth, opening of the eyes, rapid development of the pelage and hearing, deve10pment of grooming patterns, first attempts to eat solid food, flfld first forays from the nest. Early growth and development of M. unguiclIlatus is accelerated and similar to that of several other small cricetid rodents.

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Section: Discussionsupporting

confidence: 54%

Section: Growth and Developmentsupporting

confidence: 60%

Early Postnatal Growth and the Development of Temperature Regulation in the Mongolian Gerbil, Meriones unguiculatus

McManus

1971

Journal of Mammalogy

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“…Growth rate under optimum conditions is a parameter characteristic of a species and the term »species-specific growth rate« is frequently used (Morrison et al, 1954;Emelianov, 1966). Growth rate may* however, vary within narrow limits depending on the size of the litter in which the animals were born and grew up.…”

Section: Discussionmentioning

confidence: 99%

Gross body composition in postnatal development of the bank vole. I. Growth under laboratory conditions

Truszkowski¹

1974

Acta Theriol.

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Gross body composition was studied in 465 captive bank voles during postnatal development (from 1-180 days of life). It was shown that voles from small litters (1-3 young) do not differ from individuals from large litters (4-6 young) either as to degree of adiposis or the average rate of accumulation of the fat-free components of the body mass (FFB). The animals reached chemical maturity at the age of 55-60 days. The level of FFB composition at the stage of chemical maturity is not a species-specific feature and only characterizes local populations. During the first 6 months of development the calorific value of a unit by weight of the protein and fat in bank voles is constant, being respectively 4.583 and 9.240 cal/g. I. INTRODUCTIONThe large number of studies of Clethrionomys glareolus (S c h r e b e r, 1780), one of the dominant rodents in forest ecosystems in Europe, have contributed to what is known of the features of development and growth of this species in captivity (Sviridenko, 1959; Petrov & Airapet'jans, 1961; Mazak, 1962;Drożdż, 1965) and under natural conditions (Pearson, 1962;N e w s o n, 1963;Bergstedt, 1965;Kubik, 1965; Bujalska & Gliwic z, 1968;Claude, 1970;Crawley, 1970;Zejda, 1971; K a i k u s a 1 o, 1972). These data, however, relate to the biology of the species or to morphological parameters. An exception to this is the study by Sawicka-Kapusta (1974) on the quantitative relations between the main body components in bank voles during the process of growth.Growth is an increase in the mass of the organism, consisting of the growth of tissues of which it is made, and should therefore be considered *) Praca została zrealizowana w ramach problemu węzłowego 09.1.7., koordynowanego przez Instytut Ekologii PAN.[381]

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“…Virtanen et al, 2009). to thermoregulate, caused by increased ability to shiver, and improved insulation, greater size and, in some cases, development of thermogenic BAT (Morrison et al, 1954;Hissa, 1964;Christiansen, 1977;Blix and Lentfer, 1979). Parental heat and the protection of a nest are also important means of maintaining body temperature in young altricial birds in the Arctic (Blix and Steen, 1979).…”

Section: Altricial Youngmentioning

confidence: 99%

Adaptations to polar life in mammals and birds

Blix

2016

Journal of Experimental Biology

139

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This Review presents a broad overview of adaptations of truly Arctic and Antarctic mammals and birds to the challenges of polar life. The polar environment may be characterized by grisly cold, scarcity of food and darkness in winter, and lush conditions and continuous light in summer. Resident animals cope with these changes by behavioural, physical and physiological means. These include responses aimed at reducing exposure, such as 'balling up', huddling and shelter building; seasonal changes in insulation by fur, plumage and blubber; and circulatory adjustments aimed at preservation of core temperature, to which end the periphery and extremities are cooled to increase insulation. Newborn altricial animals have profound tolerance to hypothermia, but depend on parental care for warmth, whereas precocial mammals are well insulated and respond to cold with non-shivering thermogenesis in brown adipose tissue, and precocial birds shiver to produce heat. Most polar animals prepare themselves for shortness of food during winter by the deposition of large amounts of fat in times of plenty during autumn. These deposits are governed by a sliding set-point for body fatness throughout winter so that they last until the sun reappears in spring. Polar animals are, like most others, primarily active during the light part of the day, but when the sun never sets in summer and darkness prevails during winter, high-latitude animals become intermittently active around the clock, allowing opportunistic feeding at all times. The importance of understanding the needs of the individuals of a species to understand the responses of populations in times of climate change is emphasized.

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Growth and the Development of Temperature Regulation in the Tundra Redback Vole

Cited by 42 publications

References 0 publications

Early Postnatal Growth and the Development of Temperature Regulation in the Mongolian Gerbil, Meriones unguiculatus

Early Postnatal Growth and the Development of Temperature Regulation in the Mongolian Gerbil, Meriones unguiculatus

Gross body composition in postnatal development of the bank vole. I. Growth under laboratory conditions

Adaptations to polar life in mammals and birds

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