Conservation of Some Sea Bream (Sparus aurata) Fish Populations

Some S. aurata (one wild and two farmed fish) populations namely, (D, A & K21) were genetically characterized using some DNA markers. The homogeneity value was high within each estimated fish population. The genetic dissimilarity values were calculated for reconstruction the dendrogram among them. The (D) population was distantly related from (A & K21) populations. The results suggested that, there is human effects on the genetic variations due to fish transportation from locations to another without restricted plan.The total length and weight were calculated for each studied fish population for infringe the growth rate. The (D) population showed a high length and weight than the other studied sources (A & K21). The percentage of (D) hatchability (85%) was higher than the percentage of (K21) hatchability (79.2%). The average of larvae length and weight were calculated for (D) and (K21). The (D) larvae had the best length and weigh relatively. Development of local S.aurata breeds is important because many of them will be resilient to climatic stress and represent a unique source of genes for improving S. aurata production in the future.