Unusual egg quality phenotype in the Aspe Valley: a case study in rainbow trout

Unusual egg quality phenotype in the Aspe Valley: a case study in rainbow trout. 7. International Workshop on the Biology of Fish Gamete

Unusual egg quality phenotype in the Aspe Valley: a case study in rainbow trout

Unusual egg quality phenotype in the Aspe Valley: a case study in rainbow trout. 7. International Workshop on the Biology of Fish Gamete

Unusual egg quality phenotype in the Aspe Valley: a case study in rainbow trout

Unusual egg quality phenotype in the Aspe Valley: a case study in rainbow trout. 7. International Workshop on the Biology of Fish Gamete

QTLs linked to survival and growth of rainbow trout fed a 100% plant-based diet in rainbow trout since the first meal

eposterQTLs linked to survival and growth of rainbow trout fed a 100% plant-based diet in rainbow trout since the first meal. Aquaculture Europe 201

GENETIC PARAMETERS AND GENOME-WIDE ASSOCIATION STUDY OF RESISTANCE TO ACUTE HYPERTHERMIA IN RAINBOW TROUT

International audienceSelective breeding is a promising solution to reduce fish farms vulnerability to heat peaks.Objectives of this study were to give a new insight on the genetic architecture of resistance toacute hyperthermia stress in rainbow trout. At 275 days post-fertilization, 1,384 fish werephenotyped for acute hyperthermia resistance and body weight. Challenged fish weregenotyped for 57K SNP and their genotypes were imputed at high-density thanks to theirparents being genotyped on a 665K SNP array. Heritability estimate of resistance to acutehyperthermia was 0.32 ± 0.04. This trait was genetically negatively correlated with body weight(-0.58 ± 0.17). The genome-wide association study revealed that resistance to acutehyperthermia is highly polygenic as altogether the 5 detected QTLs explained less than 5% ofthe genetic variance. The main QTL region explained 3% of the genetic variance and containedtwo candidate genes previously described to be associated with temperature resistance

IMPROVING RESISTANCE TO ACUTE HYPERTHERMIA BY GENOMIC SELECTION TO ADAPT RAINBOW TROUT LINES TO CLIMATE CHANGE

International audienc