Genetic Improvement of Wild Fish Populations

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Science  22 Sep 1978:
Vol. 201, Issue 4361, pp. 1090-1094
DOI: 10.1126/science.201.4361.1090


A plan for the genetic improvement of commercially exploited wild animals is presented. It consists of crossing wild with domesticated breeds to produce heterotic hybrids and to upgrade the wild stocks. Empirical evidence is presented from experiments with the carp. Procedures for monitoring the manipulated populations are outlined. The suggested plan is ecologically reasonable and would counteract the negative genetic changes caused by excessive commercial exploitation of many species.