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A variety of tissues from T. zillii was examined by horizontal starch gel electrophoresis to identify isozymes of potential use as genetic markers for stock identification. Techniques were assessed for 30 enzymes coded for by a total of about 60 gene loci. In each case, full details of methods are given. There is also discussion of the genetic interpretation of isozyme banding.
Information availability on fisheries and aquaculture has lagged behind that of other disciplines, reflecting the minor role of fisheries in national economies, par¬ticularly of the developed countries from which information systems generally emanate. This articles gives an overview.