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Reproductive Characteristics of Captive European Brown Bears and Growth Rates of Their Cubs in Russia

Reproductive Characteristics of Captive European Brown Bears and Growth Rates of Their Cubs in Russia

European brown bears (Ursus arctos) are common in captivity in Russia. I used data from 52 litters of captive European brown bears in the St. Petersberg and Moscow zoos during 1952-94 to examine to the reproductive and growth characteristics of the species in captivity in Russia. Copulation was observed during May-July but almost all births occurred in January. Sex ratio of newborn cubs was nearly equal, but cubs born to females who copulated in July were more likely to be females. Daily weight gain was greatest for cubs 3.5-4.0 months of age.

  • Author(s) Igor L. Tumanov
  • Volume 10
  • Issue
  • Pages 63-65
  • Publication Date 1 January 1998
  • DOI
  • File Size 94.80 KB
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