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Correlated response of flesh color to selection for harvest weight in coho salmon (Oncorhynchus kisutch)

Authordc.contributor.authorDufflocq, Pablo 
Authordc.contributor.authorLhorente, Jean P. 
Authordc.contributor.authorBangera, Rama 
Authordc.contributor.authorNeira, Roberto 
Authordc.contributor.authorNewman, Scott 
Authordc.contributor.authorYáñez López, José 
Cita de ítemdc.identifier.citationAquaculture 472 (2017): 38–43es_ES
Abstractdc.description.abstractChilean coho salmon (Oncorhynchus kisutch) represents about 90% of the worldwide production. From a commercial perspective rapid growth to market weights and product quality are important aspects of profitability. The objective of this study was to determine genetic parameters, genetic trends and correlated response of flesh color (FC) after eight generations of selection for harvest weight (HW) in two coho salmon populations spawning independently in even and odd years. A total of 41,597 and 37,319 records for HW and 4946 and 6731 for FCwere included in the analysis for the even and odd populations, respectively. A linear bivariate animal modelwas used to estimate genetic parameters and compute breeding values for both traits. Estimated heritabilities for HWand FCwere 0.41 +/- 0.03 and 0.08 +/- 0.02 in the even population and 0.22 +/- 0.03 and 0.04 +/- 0.01 the in odd population, respectively. Genetic and phenotypic correlations betweenHW and FC were 0.15 +/- 0.11 and 0.07 +/- 0.02 in the even population and 0.25 +/- 0.14 and 0.12 +/- 0.02 in odd population, respectively. Response to selection was measured as the slope of the linear regression fitted on the mean breeding values per generation per trait. We found a positive genetic trend for both traits after eight generations of selection for HW. The increase in HW per generation was 0.31 +/- 0.01 and 0.26 +/- 0.02 kg for the even and odd populations, respectively. The correlated increase in FC was 0.04 +/- 0.01 and 0.04 +/- 0.00 fan units per generation in the even and odd population, respectively, showing that selection for HWcan increase FC. Statement of relevance. Correlated response in color to selection for growth in cohoes_ES
Patrocinadordc.description.sponsorshipU-inicia Grant, from VID, Universidad de Chile Canada through Genome Canada Genome British Columbia Genome Quebeces_ES
Type of licensedc.rightsAttribution-NonCommercial-NoDerivs 3.0 Chile*
Link to Licensedc.rights.uri*
Keywordsdc.subjectHarvest weightes_ES
Keywordsdc.subjectFlesh colores_ES
Keywordsdc.subjectGenetic correlationes_ES
Keywordsdc.subjectGenetic trendses_ES
Keywordsdc.subjectPacific salmones_ES
Títulodc.titleCorrelated response of flesh color to selection for harvest weight in coho salmon (Oncorhynchus kisutch)es_ES
Document typedc.typeArtículo de revistaes_ES
Indexationuchile.indexArtículo de publicación ISIes_ES

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Attribution-NonCommercial-NoDerivs 3.0 Chile
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivs 3.0 Chile