Abstract
Zone electropherograms of muscle myogens and blood proteins of members of the family Salmonidae revealed in addition to species specificity, marked similarities at the genus and family levels. In genera investigated, other than the Oncorhynchus, intraspecies polymorphisms were found. Two general hemoglobin patterns were uncovered from specimens of Coregonus clupeaformis from Great Slave Lake while their muscle myogen patterns were specifically uniform. Salvelinus namaycush from Lake Superior and Cayuga Lake were readily distinguishable by differences in their multiple hemoglobin patterns as well as by plasma proteins as revealed by polyacrylamide disc electrophoresis. Muscle myogen electropherograms of S. namaycush, S. alpinus, and S. malma showed striking similarities, the latter two being almost superimposable while the patterns of Salvelinus fontinalis were more closely allied to that of the genus Salmo. The value of muscle myogens in phylogenetic studies and in intraspecies protein variations as diagnostic characters in stock analyses is discussed.
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