Sex Determination and Diversity of Seriola dorsalis in Three Distinct Geographical Location

Seriola species (S. dumerili, S. dorsalis, S. lalandi, S. rivoliana, S.quinqueradiata), collectively known as amberjacks, are fish of particular interest to the growing aquaculture industry due to their high value, forming a billion dollar plus component of the sashimi industry.  In this work, we resequenced 90 Seriola dorsalis individuals.  Thirty from three different locations: La Paz, Baja California, MX, Cedros Islands, Baja California, Mexico, and San Diego, CA.  From each location, roughly equal numbers of each sex were sampled. Several candidate molecular markers were identified that were linked to location and sex specificity. In addition, we have identified several regions in the genome that appear to be under local selection that may be linked to adaptive traits within each region. The development of these types of genetic resources is necessary to improve broodstock-based aquaculture of S. dorsalis and help make culture production sustainable and profitable.