Abstract
Blood samples collected from Leopard Seals, Hydrurga leptonyx, from Heard Island and Macquarie Island were surveyed electrophoretically for allozyme variation in blood proteins. Thirty four proteins encoded by a minimum of 39 genetic loci were surveyed; six of these were found to be polymorphic, but only one could be considered polymorphic at the 95% level of significance. The mean observed heterozygosity was 0.01 I ± 0.007, which is the lowest yet recorded for a species of Antarctic seal. Hydrurga leptonyx exhibited fixed allelic differences with the Southern Elephant Seal, Mirounga leonina, at 26% of loci screened.
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