Conservation and Distribution of Genetic Variation in a Polytypic Species, the Cutthroat Trout

Conservation and Distribution of Genetic Variation in a Polytypic Species, the Cutthroat Trout Abstract: The cutthroat trout (Salmo clarki) presents a series of unusual and difficult problems in conservation biology. As many as 16 subspecies have been recognized in the recent literature. The genetic distance between subspecies based upon 46 enzyme loci ranges from that usually seen between congeneric species to virtual genetic identity. Subspecies from the western portion of the range of the cutthroat trout are genetically more similar to rainbow trout (Salmo gairdneri) than they are to the other subspecies of cutthroat trout. In addition, much of the genetic variation within the west‐slope cutthroat trout (S. c. lewisi) results from alleles found in only one or two local populations, but they often occur at high frequencies in those populations. Thus, preserving the genetic variation in westslope cutthroat trout entails preserving as many local populations as possible. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Conservation Biology Wiley

Conservation and Distribution of Genetic Variation in a Polytypic Species, the Cutthroat Trout

Conservation Biology, Volume 2 (2) – Jun 1, 1988

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Publisher
Wiley
Copyright
"Copyright © 1988 Wiley Subscription Services, Inc., A Wiley Company"
ISSN
0888-8892
eISSN
1523-1739
D.O.I.
10.1111/j.1523-1739.1988.tb00168.x
Publisher site
See Article on Publisher Site

Abstract

Abstract: The cutthroat trout (Salmo clarki) presents a series of unusual and difficult problems in conservation biology. As many as 16 subspecies have been recognized in the recent literature. The genetic distance between subspecies based upon 46 enzyme loci ranges from that usually seen between congeneric species to virtual genetic identity. Subspecies from the western portion of the range of the cutthroat trout are genetically more similar to rainbow trout (Salmo gairdneri) than they are to the other subspecies of cutthroat trout. In addition, much of the genetic variation within the west‐slope cutthroat trout (S. c. lewisi) results from alleles found in only one or two local populations, but they often occur at high frequencies in those populations. Thus, preserving the genetic variation in westslope cutthroat trout entails preserving as many local populations as possible.

Journal

Conservation BiologyWiley

Published: Jun 1, 1988

References

  • Evolution of fitness. V. Rate of evolution in irradiated populations of Drosophila
    Ayala, F.J.
  • Genetics of the Evolutionary Process
    Dobzhansky, Th.
  • Loss of genetic diversity from managed populations: Interacting effects of drift, mutation, selection and population subdivision
    Lacey, R. C.
  • Developmental instability as an indicator of reduced genetic variation in hatchery trout
    Leary, R. F.; Allendorf, F. W.; Knudsen, K. L.
  • Geographic patterns of protein variation and subspeciation in the cutthroat trout
    Loudenslager, E. J.; Gall, G. A. E.
  • Electrophoretic study of cutthroat trout populations in Utah
    Martin, M. A.; Shiozawa, D. K.; Loudenslager, E. J.; Jensen, J. N.

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