Genetic improvement of marine fish - which method for industry?

Knibb, Wayne

doi:10.1046/j.1365-2109.2000.00393.x

Cited by 54 publications

(47 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Nevertheless, by inhibiting sexual maturation, it is not possible to obtain fish with a specific skin color, in accordance with market demands, given that the external appearance is limited to that of specimens that have not reached sexual maturity, with all the variations particular to the population under study, and therefore, selective breeding to improve color in these fish seems appropriate. In the case of characters with monogenetic control, implementation of systematic recovery programs aimed at qualitative traits in aquaculture installations (deliberate recovery of mutants) can be considered (Knibb 2000). Nevertheless, this task may prove difficult, given that this phenotype depends on recessive genes whose frequency is low, or on the combination of rare alleles, that appear very occasionally in the progenies.…”

Section: Discussionmentioning

confidence: 98%

“…The culture of improved stocks would provide the opportunity to standardize and improve product appearance, contributing considerably to achieving greater stability and expansion of the industry (Knibb 2000). The limited development of this aspect in the salmon farming, contrasts with the use of color applied to other characters, in various species animals.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Genetics of salmonid skin pigmentation: clues and prospects for improving the external appearance of farmed salmonids

Colihueque

2009

Rev Fish Biol Fisheries

View full text Add to dashboard Cite

Skin color is an important commercial trait in fish farming, given that this phenotype influences consumer acceptance, thereby determining the commercial value that fish can reach. This character is genetically determined, either by monogenetic or polygenetic control. Over the past few years, progress has been made in studies of quantitative genetic parameters for commercially important traits related to skin pigmentation and, in the molecular field, the mapping and cloning of some genes involved in fish color determination. This study reviews information regarding the genetic determination of salmonid skin color, along with different strategies to improve this character. Data collected in model fish (medaka and zebrafish) are also considered since this information contributes considerably towards improving understanding of the genes that may participate, and of the mechanisms involved in establishing skin coloration in salmonids.

show abstract

Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

Genetics of salmonid skin pigmentation: clues and prospects for improving the external appearance of farmed salmonids

Colihueque

2009

Rev Fish Biol Fisheries

View full text Add to dashboard Cite

show abstract

“…When there are not good genetic programs, regional fish farming enterprises insufficient selectivity studies and outnumbered in the breeding populations were trying to do with and is an unplanned selectivity intensive inbreeding has led to the emergence of farming. This situation has put pressure on the genetic diversity of wild populations to extinction even been reported to cause (Knibb, 2000).…”

Section: Mtdna Molecular Marker Used To Determine Genetics Distortionmentioning

confidence: 99%

“…The attempt has been focusing on understanding of the process of changes in genetics of wild population using mitochondrial DNA molecular markers. Because, genetic diversity measurement in wild fish populations is significant for understanding and effective management of these populations (Farias, 2001;Knibb, 2000;Okumus and Cifci, 2003;Aquilino et al, 2011;Cawthorn et al, 2011;Lakra et al, 2011;Mecklenburg et al, 2011;Kartavtsev et al, 2009;Ward et al, 2005;Hubert et al, 2008;Nicolas et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Genetic Impact Determination of Farmed Fish on Native Fish by mtDNA Markers

Kayaci¹,

Can²,

Güner³

et al. 2015

KSÜ Doğ. Bil. Derg

View full text Add to dashboard Cite

Aquaculture is one of the world's fastest-developing and growing food-producing sectors. The subsector's expansion commenced in the 1970's, actuated by move forwards in hatchery technology and pond husbandry. Aquaculture and especially fish farming, however, have been discussed as negative potential effects on environment. The negative potential effects are, direct mortality, loss of biodiversity, tainting of wild species. Moreover these are disease transmission to other species, displacement of wild fish from natural habitat. Although these negative potential effects, cultural fish represent genetically exogenous populations or crosses between them. Some pauper gen pool of cultured fish population can develop with fertile gen pool of natural fish population or just the opposite of them. It can be said that cultured fish typically constitute gene pools. We need an observation which brings an urgent focus for conservation between natural populations and spawning populations. In this review it was observed negative genetic impacts of escaped farmed fish population on wild fish population by mtDNA markers.

show abstract

“…A large part of aquaculture production still relies on wild spawn or broodstock. Fish species such as carp, catfish, seabass, seabream and several other marine species are periodically 'refreshed' by introducing wild spawners (Gjedrem, 2000;Knibb, 2000). The diversity of fish species exploited for aquaculture, the molecular resources available and other logistical problems related to controlled breeding, the dimension and structure of the industry and the long investment period before dividend, means that genetic selection of fish for economically important traits is still in its infancy.…”

mentioning

confidence: 99%

Advances in research on the prenatal development of skeletal muscle in animals in relation to the quality of muscle-based food. II – Genetic factors related to animal performance and advances in methodology

Rehfeldt

Pas

Wimmers

et al. 2011

Animal

View full text Add to dashboard Cite

Selective breeding is an effective tool to improve livestock. Several selection experiments have been conducted to study direct selection responses as well as correlated responses in traits of skeletal muscle growth and function. Moreover, comparisons of domestic with wild-type species and of extreme breeds provide information on the genetic background of the skeletal muscle phenotype. Structural muscular components that differed with increasing distance in lean growth or meat quality in mammals were found to be myofibre number, myofibre size, proportions of fibre types as well as the numbers and proportions of secondary and primary fibres. Furthermore, markers of satellite cell proliferation, metabolic enzyme activities, glycogen and fat contents, the expression of myosin heavy chain isoforms, of activated AMPKa and other proteins in skeletal muscle tissue and circulating IGF1 and IGF-binding proteins have been identified to be involved in selection responses observed in pigs, cattle and/or chicken. The use of molecular methods for selective breeding of fish has only recently been adopted in aquaculture and studies of the genetic basis of growth and flesh quality traits are scarce. Some of the molecular markers of muscle structure/metabolism in livestock have also been identified in fish, but so far no studies have linked them with selection response. Genome scans have been applied to identify genomic regions exhibiting quantitative trait loci that control traits of interest, for example, muscle structure and meat quality in pigs and growth rate in chicken. As another approach, polymorphisms in candidate genes reveal the relationship between genetic variation and target traits. Thus, in large-scale studies with pigs' associations of polymorphisms in the HMGA2, CA3, EPOR, NME1 and TTN genes with traits of carcass and meat quality were detected. Other studies revealed the significance of mutations in the IGF2 and RYR1 genes for carcass lean and muscle fibre traits in pigs. Mutations in the myostatin (MSTN) gene in fish were also examined. Advances in research of the genetic and environmental control of traits related to meat quality and growth have been made by the application of holistic 'omics' techniques that studied the whole muscle-specific genome, transcriptome and proteome in relation to muscle and meat traits, the development of new methods for muscle fibre typing and the adaptation of biophysical measures to develop parameters of muscle fibre traits as well as the application of in vitro studies. Finally, future research priorities in the field are defined.Keywords: farm animal, fish, skeletal muscle, animal performance, genetic effects ImplicationsSkeletal muscle development in different animal species has been an important topic of scientific research for many years.*Authoring on behalf of all members of the COST action 925: http://www. agrsci.dk/costaction925/index.html -E-mail: rehfeldt@fbn-dummerstorf.de 718The main aim of this review is to present recent knowledge on the genetic components of skele...

show abstract

Genetic improvement of marine fish - which method for industry?

Cited by 54 publications

References 40 publications

Genetics of salmonid skin pigmentation: clues and prospects for improving the external appearance of farmed salmonids

Genetics of salmonid skin pigmentation: clues and prospects for improving the external appearance of farmed salmonids

Genetic Impact Determination of Farmed Fish on Native Fish by mtDNA Markers

Advances in research on the prenatal development of skeletal muscle in animals in relation to the quality of muscle-based food. II – Genetic factors related to animal performance and advances in methodology

Contact Info

Product

Resources

About