Similarity of Genie Polymorphism of Tetrazolium Oxidase in Bluefin Tuna ( Thunnus thynnus ) from the Atlantic Coast of France and the Western North Atlantic
Using electrophoretic techniques, we found three phenotypes of the enzyme tetrazolium oxidase in bluefin tuna (Thunnus thynnus) from the Bay of Biscay. The phenotypes were indistinguishable from those that in western Atlantic bluefin are controlled by two codominant, autosomal alleles. The frequency...
| Published in: | Journal of the Fisheries Research Board of Canada |
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| Main Authors: | , |
| Format: | Article in Journal/Newspaper |
| Language: | French |
| Published: |
Canadian Science Publishing
1973
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1139/f73-172 http://www.nrcresearchpress.com/doi/pdf/10.1139/f73-172 |
| Summary: | Using electrophoretic techniques, we found three phenotypes of the enzyme tetrazolium oxidase in bluefin tuna (Thunnus thynnus) from the Bay of Biscay. The phenotypes were indistinguishable from those that in western Atlantic bluefin are controlled by two codominant, autosomal alleles. The frequency distributions of phenotypes in eastern and western Atlantic samples do not differ significantly from each other, nor does a frequency distribution of phenotypes in the combined sample differ significantly from a Hardy-Weinberg distribution. These facts support the hypothesis that bluefin tuna from the Bay of Biscay and from the western North Atlantic might belong to a single breeding population rather than to geographically discrete races. The facts are consistent with evidence from tagging, which shows sporadic transoceanic migration. |
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