Genetic variation in the nine rainbow trout (Oncorhynchus mykiss) populations in South Africa |
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| Institution: | 1. The New Zealand Institute for Plant and Food Research Ltd, Box 5114, Port Nelson, Nelson 7043, New Zealand;2. The New Zealand Institute for Plant and Food Research Limited, Private Bag, 92169, Auckland 1142, New Zealand;3. The New Zealand Institute for Plant and Food Research Limited, Private Bag, 11600, Palmerston North 4442, New Zealand;4. Cawthron Institute, Private Bag 2, Nelson 7042, New Zealand;2. University of Wisconsin – Madison, 470 Animal Science Building 1675, Observatory Dr., Madison, WI 53706, USA |
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| Abstract: | - 1.1. Twenty-six protein coding loci in nine populations of rainbow trout, from different localities in South Africa, were analyzed by starch and polyacrylamide gel electrophoresis to estimate the amount of genetic diversity present.
- 2.2. Heterozygosity ranged between 0.0445 and 0.0745.
- 3.3. The relatively high heterozygosity levels are probably due to the historical mixing of strains, and the differences in heterozygosity indicate that the populations originate from different sources, each with different genetical characteristics.
- 4.4. Differences in phenotypic characters (i.e. growth) seem to relate to genotypic variation, whilst food conversion rate and survival performance results did not seem to relate to genotypic variation.
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