Information on the genetic structure of economically important fish
species is essential for fisheries management and fish farming. DNA
markers used in this study was successful in estimating genetic
variation and species differentiation in four species of Egyptian
tilapia and are of potential use in tilapia breeding programs. DNA
profiles generated in each species of tilapia were unique. Genetic
improvement of animals is limited by the fact that most traits of
economically importance are polygenic in nature and are influenced
by a variety of environmental and genetic factors. These markers
can be used in monitoring QTL loci during selection programs.
Markers linked to simple commercially important genetic traits such
as disease resistance genes can also be identified from natural
resources and introgressed into domestic strains. This study can be
used as a baseline study for researcher and fish breeders who are
interested in evaluating tilapia genetic resources and its
potential use in developing selective breeding programs.
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