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Biochemical Genetic Variation at Six Loci in Four Stocks of Rainbow Trout
Author(s) -
Utter Fred M.,
Hodgins Harold O.
Publication year - 1972
Publication title -
transactions of the american fisheries society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.696
H-Index - 86
eISSN - 1548-8659
pISSN - 0002-8487
DOI - 10.1577/1548-8659(1972)101<494:bgvasl>2.0.co;2
Subject(s) - rainbow trout , biology , hatchery , salmo , malate dehydrogenase , genetic variation , trout , genetics , zoology , lactate dehydrogenase , gene , enzyme , fishery , biochemistry , fish <actinopterygii>
Biochemical variants of the enzymes alpha glycerophosphate dehydrogenase (AGPD), lactate dehydrogenase (LDH), malate dehydrogenase (MDH), tetrazolium oxidase (TO), and phos‐phoglucomutase (PGM) and of the serum protein transferrin (Tfn) were identified in four stocks of rainbow trout (Salmo gairdneri). Various lines of evidence indicated that each polymorphic system reflected genetic variation at discrete loci. Each stock had a distinct genetic profile based on the frequency of different biochemical variants. The findings have considerable potential for application including: (1) characterization and identification of stocks; (2) indicators of inbreeding in hatchery and wild populations; (3) studies of physiological differences of genetically related forms of a particular enzyme and of environmental factors influencing retention of these variant genes in different populations; (4) use as genetic markers in seeking linkages; and (5) studies of ecological and evolutionary relations among rainbow trout and other closely related salmonid species.