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Reference Base  Past and future breeding of the Indian rhinoceros in capt... |
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| Title: |
Past and future breeding of the Indian rhinoceros in captivity |
| Author(s): |
Zschokke, S.; Studer, P.; Baur, B. |
| Year published: |
1998 |
| Journal: |
International Zoo News |
| Volume: |
45 (5) |
| Pages: |
261-276, figs. 1-6, tables 1-2 |
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| File: |
View PDF: 738,0 kb |
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Captive
Ecology - Population
Indian Rhino
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| We found high juvenile mortality in both sexes, 23% for males, 30% for females. Offspring of primiparous dams suffered higher juvenile mortality (40%) than those of multiparous dams (17%).
Infant survivorship (live-birth to 6 months) was 87.7 % for males and 85.7 % for females.
If stillbirth... |
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World
Ecology - Population
Indian Rhino
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| maximum age in captivity 42 years |
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Captive
Ecology - Population
Indian Rhino
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| Zoo population end 1996. In zoo-born R. unicornis, the sex ratio is male-biased from birth to the age of five years. At sexual maturity, there is still a tendency towards a male-biased sex ratio, whereas in 20-year-old individuals, males and females occur in more similar proportions. In contra... |
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Captive
Genetics - Methods
Indian Rhino
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| Lacy (1989) defined the founder equivalent as a concept to quantify the genetic status of a population. The founder equivalent (FE) of a population is the number of equally contributing founders that would be needed to produce the observed genetic diversity. The founder equivalent is usually lo... |
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Captive
Genetics
Indian Rhino
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| Captive population Rhinoceros unicornis. The important question about the extent of the natural genetic variability in R. unicornis is so far unanswered. Both major populations in the wild (Nepal and Assam) went through bottlenecks; the population in Assam was reduced to 10-30 individuals befor... |
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Captive
Captivity - Zoo Records
Indian Rhino
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| The size of the captive population increased steadily between 1950 and 1991, but has remained fairly stable in the nineties. The increase in population size was due partly to the continued introduction of wild-caught animals, and partly to the succesful breeding in many zoos around the world. O... |
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Captive
Reproduction
Indian Rhino
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| First reproduction occurred earlier in females (median: 9y 2m, n = 39) than in males (median: 10y 5m, n = 31). The youngest dam giving birth was Studbook #99 at an age of 4y 4m. Studbook #86 was the youngest sire of exactly known age (8y 4m) whose offspring was live-born (#152 was 7y 7m old when... |
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World
Reproduction
Indian Rhino
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| Only males have reproduced beyond the age of 32 years.
First reproduction occurred earlier in females (median: 9y 2m, n = 39) than in males (median: 10y 5m, n = 31). The youngest dam giving birth was Studbook #99 at an age of 4y 4m. Studbook #86 was the youngest sire of exactly known age (8y 4m... |
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