Chromosome manipulation in fish-A review

Abstract

Chromosome manipulations can be carried out easily in fishes due to their external fertilization and embryogenesis. In recent years a great deal of research has been conducted on chromosome set manipulation (polyploidy, gynogenesis and androgenesis) in a number of species. The rationale for this work has been to produce sterile progeny for culture; for sex manipulation; and to produce highly inbred or cloned lines for crossbreeding for research purpose. Haploid, gynogenetic diploid, triploid and tetraploid genotypes have been produced in a number of species and yet this research has been of little or no discernible benefit to the world-widc culture industry. Techniques for induction and verification of chromosome set manipulation are reviewed and the potential applications of these are discussed.