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Books > Science & Mathematics > Biology, life sciences > Life sciences: general issues > Genetics (non-medical)
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Molecular Genetics in Fisheries (Paperback, 1995 ed.)
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Molecular Genetics in Fisheries (Paperback, 1995 ed.)
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The basic principle of all molecular genetic methods is to employ
inherited, discrete and stable markers to identify genotypes that
characterize individuals, populations or species. Such genetic data
can provide information ori the levels and distribution of genetic
variability in relation to mating patterns, life history,
population size, migration and environment. Although molecular
tools have long been employed to address various questions in
fisheries biology and management, their contributions to the field
are sometimes unclear, and often controversial. Much of the initial
impetus for the deployment of molecular markers arose from the
desire to assess fish stock structure based on various
interpretations of the stock concept. Although such studies have
met with varying success, they continue to provide an impetus for
the development of increasingly sensitive population
discriminators, yielding information that can be valuable for both
sustainable exploitation and the conservation of fish populations.
In the last major synthesis of the subject, Ryman and Utter (1987)
summarized progress and applications, though this was prior to the
wide-scale adoption of DNA methodology. New sources of genetic
markers and protocols are now available, in particular those that
exploit the widely distributed and highly variable repeat sequences
of DNA, and the amplification technique of the polymerase chain
reaction.
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