Assessment of tools for identifying the genetic origin of fish and monitoring their occurrence in the wild (original) (raw)

Application of molecular markers in fisheries and aquaculture

Genetic variation in a species enhances the capability of organisms to adapt to changing environment and is necessary for survival of the species. Genetic variation arises between individuals leading to differentiation at the level of population, species and higher order taxonomic groups. The genetic diversity data have varied application in research on evolution, conservation and management of natural resources and genetic improvement programs, etc. Development of Molecular genetic markers has powerful ability to detect genetic studies of individuals, populations or species. These molecular markers combined with new statistical developments have revolutionized the analytical power, necessary to explore the genetic diversity. Molecular markers and their statistical analysis revolutionized the analytical power, necessary to explore the genetic diversity. Various molecular markers, protein or DNA (mt-DNA or nuclear DNA such as microsatellites, SNP or RAPD) are now being used in fisheries and aquaculture. These markers provide various scientific observations which have importance in aquaculture practice recently such as: 1) Species Identification 2) Genetic variation and population structure study of natural populations 3) Comparison between wild and hatchery populations 4) Assessment of demographic bottleneck in natural population 5) Propagation assisted rehabilitation programs. In this review article, we have concentrated on the basics of molecular genetics, overview of commonly used markers and their application along with their limitations (major classes of markers) in fisheries and aquaculture studies.

Molecular markers and their applications in fisheries and aquaculture

Advances in Bioscience and Biotechnology, 2010

Genetic variation in a species enhances the capability of organism to adapt to changing environment and is necessary for survival of the species. Genetic variation arises between individuals leading to differentiation at the level of population, species and higher order taxonomic groups. The genetic diversity data has varied application in research on evolution, conservation and management of natural resources and genetic improvement programmes, etc. Development of Molecular genetic markers has powerful ability to detect genetic studies of individuals, populations or species. These molecular markers combined with new statistical developments have revolutionized the analytical power, necessary to explore the genetic diversity. Molecular markers and their statistical analysis revolutionized the analytical power, necessary to explore the genetic diversity. Various molecular markers, protein or DNA (mt-DNA or nuclear DNA such as microsatellites, SNP or RAPD) are now being used in fisheries and aquaculture. These markers provide various scientific observations which have importance in aquaculture practice recently such as: 1) Species Identification 2) Genetic variation and population structure study in natural populations 3) Comparison between wild and hatchery populations 4) Assessment of demographic bottleneck in natural population 5) Propagation assisted rehabilitation programmes. In this review article, we have concentrated on the basics of molecular genetics, overview of commonly used markers and their application along with their limitations (major classes of markers) in fisheries and aquaculture studies.

.mole.techniques used for identifictn of fishes

Continental J. Agricultural Science, 2013

S Species identification is a fundamental part of recognizing and describing biodiversity. The difficulty in assigning an organism to a biologic well considered before the use of any molecular identification tool. Molecular methods or tools provide valuable data on species diversity through their ability to detect variation at the DNA level. These methods are bas species carry specific DNA (or protein) sequences that are different from those found in individuals from other species. Traditionally fish species identification is based on external morphological and meristic features. are of limited value for identification and differentiation purposes, even with whole specimens, because they can show either considerable intraspecific variations or small differences between species. powerful addition or even an alternative. Here we briefly review modern technological achievements for DNA analysis that offer great potentials for the identification of fish species.

Applications of Molecular Markers in Fisheries and Aquaculture

2019

Organisms are characterized by unique biological attributes which enhance their fitness and survival to a particular environment. The driving force for enhanced survival and fitness is the genetic variation inherent in an individual as well as in a population. The information regarding genetic diversity and variation has wide application in research on evolution, conservation and management of natural populations. The advent of DNA cloning and sequencing methods have contributed immensely to the development of molecular taxonomy and population genetics over the last 2 decades. These modern methods have revolutionized the field of molecular taxonomy and population genetics with improved analytical power and precision.