Heritabilities and G×E interactions for quality traits in the European sea bass (Dicentrarchus labrax L.)

A first insight into genotype × diet interactions in European sea bass (Dicentrarchus labrax L. 1756) in the context of plant-based diet use

“…High heritabilities of CorrFat confirm that rapid genetic gain is also possible for this quality trait, as already shown on rainbow trout (Quillet et al 2005), common carp (Kocour, Mauger, Rodina, Gela, Linhart & Vandeputte 2007), European sea bass (Haffray, Pincent, Dupont‐Nivet, Vandeputte, Merdy, Chavanne & Chatain 2007) and European whitefish (Kause, Quinton, Ruohonen & Koskela 2009). Selection can be efficient on this trait, whatever be the diet (M or PB).…”

Investigation of morphological predictors of fillet and carcass yield in European sea bass ( Dicentrarchus labrax ) for application in selective breeding

“…with previous experiments in sea bass where they ranged from 0.19 to 0.63 for BW and 0.10 to 0.49 for K (Bardon et al, 2009;Dupont-Nivet et al, 2008, 2010Haffray et al, 2007;Karahan et al, 2013;Saillant et al, 2006Saillant et al, , 2009Vandeputte et al, 2014). Heritability estimates are also in the upper range for Carc% (0.57 vs 0.48 -0.74), equivalent (0.20 vs 0.20 -0.25) for Fil% and lower (0.46 vs 0.87) for Head% when compared with previous studies on different populations (Haffray et al, 2007;Saillant et al, 2009;Vandeputte et al, 2014). Compared to another year class of the same strain estimated in the previous generation of selection (Bestin et al, 2014), heritability was higher in the present study for BW (0.40 vs 0.19), K (0.50 vs 0.37) and Head% (0.46 vs 0.32) and similar for Carc% (0.57 vs 0.54), HGCarc% (0.32 vs 0.35) and Fil% (0.20 vs 0.20).…”

“…Aquaculture is the agricultural sector with the highest rate of growth and as any other growing industry, the optimisation of production is becoming a necessity, genetic improvement being a major way to optimize productivity. Several previous studies on the genetics of sea bass have focused on the improvement of traits such as growth rate (Dupont-Nivet et al, 2008, 2010Saillant et al, 2006;Vandeputte et al, 2009), body composition and processing traits (Gorshkov et al, 2004;Haffray et al, 2007;Saillant et al, 2009), survival and control of sex (Saillant et al, 2002;Vandeputte et al, 2007) and deformities (Bardon et al, 2009;Karahan et al, 2013). Quantitative genetic variation was evidenced for most of the traits investigated.…”

“…In the last decades, estimates for production and processing traits (growth and carcass) were produced for Mediterranean fish species, in particular for Gilthead sea bream (Sparus aurata) (García-Celdrán et al, 2015;Navarro et al, 2009) and European sea bass (Bestin et al, 2014;Haffray et al, 2007;Saillant et al, 2009), but in the latter species without reporting indirect selection traits that can be measured on live breeding candidates. However, processing yields are clearly declared as breeding objectives in some European seabass selective breeding programmes (Chavanne et al, 2016).…”

Do the visual conditions at the point of escape affect European sea bass escape behavior?

“…Additionally, replacement of the damaged equipment and also recapture of the escapees increase the overall cost for the aquaculture industry (Naylor et al, 2005). Such escapes have been reported for almost all species that are reared in European aquaculture (Sparus aurata, Dicentrarchus labrax, S. salar, G. morhua) installations and occur at all the stages of the rearing process (Haffray et al, 2007), such as induced breeding, larval stage and grow out (Jensen et al, 2010). This pan-Euro-.…”