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Population Genetics Of The Genus Transennella (Bivalvia), William Gregory Rotz

University of the Pacific Theses and Dissertations

Genetic variation at twelve loci which code for enzymes and non-enzymatic protein has been studied by means of starch gel electrophoresis in two apparent species of the pelecypod genus Transennella, Variable allozymes include esterase, leucine aminopeptidase, malate dehydrogenase, phosphoglucose isomerase, tetrazolium oxidase, and nonenzymatic protein, Observed allele frequencies for these systems are in close agreement with Hardy-Weinberg expectations indicating that these protandric hermaphrodites are outbreeding. The genus is characterized by two distinct morphotypes which differ in shell shape and pigmentation. Genetic similarity (I) and genetic distance (D) statistics were computed for the two morphotypes and for two populations of each …