Maternal condition determines birth date and growth of newborn bear cubs
نویسندگان
چکیده
منابع مشابه
Modes of thermal protection in polar bear cubs--at birth and on emergence from the den.
At birth in late December the polar bear is small (700 g), uninsulated, and helpless. It probably has a modest capacity for metabolic heat production and depends on the female and a snow den in which it is born for thermal protection. The microclimate of an artificial polar bear den was investigated at Point Barrow, AK, and the temperature therein found to stay around 0 degrees C provided a hea...
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The present study characterizes the relations among maternal condition, litter size, birth condition, and growth in body weight for a population of common marmosets. The subjects of the study were marmosets born into a single colony between 1994 and 2001. Three sets of analyses were conducted to answer the following questions: 1) Is there a relationship between litter size, maternal condition, ...
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Introduction: Aside from classic indexes of infant growth such as weigh, length and head size, other infant parameters have been investigated in different studies and its relationship with gestation age and uterine internal growth have been evaluated. these parameters include breast size, underfoot size and arm size. In this study, the correlation between underfoot size of new-borns and other c...
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A case control study of "small for date" and premature infants was conducted at 17 hospitals in Tehran between December 1989 and June 1990. The study population consisted of mothers of 347 small for date, 261 premature and 1164 normal infants. Mothers who were less than 18 years old and their height less than 155 cm had a statistically significant RRF. (2.18) for the birth of small for dat...
متن کاملMedical Observations in the Clifton Zoological Gardens, with Notes on the Birth of Two Russian Bear Cubs in Captivity
as met with by me in our Zoological Gardens in Clifton. I11 those days but little was known and recorded of this branch of Comparative Pathology, which has now rightly assumed a very important position. Time has gone on, and I have been asked if I would give a. few more details. I am quite sure that most of us take an interest in animals, be they horses, dogs, cats, pigeons, canaries, etc., and...
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ژورنال
عنوان ژورنال: Journal of Mammalogy
سال: 2012
ISSN: 0022-2372,1545-1542
DOI: 10.1644/11-mamm-a-155.1