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Reference Base  Inbreeding in captive Indian rhinoceros Rhinoceros unicornis |
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| Title: |
Inbreeding in captive Indian rhinoceros Rhinoceros unicornis |
| Author(s): |
Baur, B.; Studer, P. |
| Year published: |
1995 |
| Journal: |
International Zoo Yearbook |
| Volume: |
34 |
| Pages: |
205-211, figs. 1-2, table 1 |
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| File: |
View PDF: 662,4 kb |
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Location:
Subject:
Species:
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Captive
Reproduction
Indian Rhino
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| In captive population Rhinoceros unicornis, 1981-1990. Gestation tended to be shorter for inbred young than for non-inbred young
Inbred young, 474.1 ? 9.7 days, n=10
Non-inbred young, 479.5 ? 5.8 days, n=14 (t=1.71, P=0.1) |
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Location:
Subject:
Species:
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World
Genetics
Indian Rhino
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| [Definition] Inbreeding increases homozygous genotypes. Together with general tendencies for deleterious alleles to be recessive, this provides the basis of adverse effects. Inbreeding often leads to a reduction in viability and fertility. |
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Location:
Subject:
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World
Genetics
Indian Rhino
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| Inbreeding coefficients based on pedigree were calculated with a computer porgram (THINK-PASCAL on Macintosh) using the additive relationship matrix method. |
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Location:
Subject:
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World
Genetics
Indian Rhino
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| Inbreeding and Juvenile Mortality. In captive population Rhinoceros unicornis, 1981-1990
Independent of parity, inbred and non-inbed animals did not differ in juvenile mortality (inbred 8 %, n=24; non-inbred: 22 %, n=77, ?=0.18, df=1, P>0.1).
Calves with inbreeding coefficient >0.25 appeared ... |
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Location:
Subject:
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World
Genetics
Indian Rhino
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| In captive population Rhinoceros unicornis, 1981-1990. Inbreeding increases by more than 4 % per generation.
The study does not show any significant deleterious effects in captive Indian Rhino. |
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Location:
Subject:
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World
Genetics
Indian Rhino
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| Individuals with inbreeding coefficient of zero were classified as 'non-inbred', those with an inbreeding coefficient greater than zero as 'inbred'. The terms non-inbred and inbred are relative and levels of inbreeding can only be quantified in respect to a base population. |
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Location:
Subject:
Species:
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Captive
Morphology - Size
Indian Rhino
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| Captive population. Birth weight is important for juvenile survival.
Mean birth weight of calves that did not survive 6 months:
54.9 ? 2.6 kg, range 51-57 kg, n=18 (t=4.12, P<0.001)
Mean birth weight of calves that did survive:
67.4 ? 5.9 kg, range 59-79 kg, n=18 (t=4.12, P<0.001)
Inbred ... |
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