Abstract
Hybrid striped bass is a major aquaculture species in the United States. Artificial breeding of this species can introduce large variation in growth during production to market size. To assess the ...
Highlights
Hybrid striped bass (HSB; “sunshine”; Morone chrysops × M. saxatilis), created by artificial crosses of white bass (WB; M. chrysops) and striped bass (SB; M. saxatilis) are a major commodity in US aquaculture production (Hallerman, 1994)
Significant differentially expressed genes (DEGs) between low and high growth HSB were collected and identified by BLASTx searches (1e−3) to the non-redundant protein database at the NCBI
The gene for insulin-like growth factor binding protein 2a was highly down-regulated in the largest HSB
Summary
Hybrid striped bass (HSB; “sunshine”; Morone chrysops × M. saxatilis), created by artificial crosses of white bass (WB; M. chrysops) and striped bass (SB; M. saxatilis) are a major commodity in US aquaculture production (Hallerman, 1994). In HSB culture, the major breeders utilize wild parental bass in their breeding programs and selection programs for growth characteristics remain in their infancy (Garber & Sullivan, 2006). This uncontrolled breeding schema can and often does lead to great variability in HSB size at harvest, even when fish are size-matched at stocking. We set out to better understand the genetic basis behind this variation by determining whether gene expression changes could be detected between the largest and smallest HSB in a population. We hypothesized that any observed changes would be related to genes involving growth factors which predominate the liver such as insulin-like growth factor (IGF) along with energy production pathways
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