Caracterização genética do Bijupirá (Rachycentron canadum) cultivados na empresa Bahia Pesca por meio de marcadores citogenéticos e moleculares

Abstract

The Rachycentron canadum, better known by its popular name as "Bijupirá", is a species of fish from marine waters, found in all oceans. It is part of the family Rachycentridae and belongs to the order Perciformes. It is in high demand in aquaculture due to their zootechnical attributes, as that is reflected in the marketplace due to the quality of its meat. Genetic studies have contributed to deepen knowledge bout the biology of various species of fish. They have also provided better yields and management on fish farms in order to improve production. This study aimed to characterize genetically the species R. canadum through genetic markers and molecular cytogenetics. Using the information generated in this work by means of chromosome preparations a modal number of 2n = 48 chromosomes was found. Through the technique ISSR or SPAR-PCR was verified existence of low genetic variability among individuals grown in Bahia Pesca, in which the primers (AAGC) and 4 (Tagg) 4 were considered monomorphic, unlike primer (GGAC) 4 where polymorphic alleles were observed.