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Abstract
The bull shark mitochondrial structure is similar to that of other elasmobranchs; it has a total length of 16,100 bp, the base composition of the genomes was as follows: A (31.35%), T (31.35%), C (24.38%) and G (12.90%). It contains 13 protein-coding genes and 23 tRNA genes. The tRNA genes range from 70–72 bp. Gene order is the same as in other vertebrates and teleosts.
Declaration of interest
The authors report no conflicts of interest. The authors alone are responsible for the content and writing of the paper. Support was provided by CIBNOR and ICMyL through the Subsistema Nacional de Recursos Genéticos Acuáticos, SUBNARGENA, of the Secretaría de Ganadería, Agricultura, Desarrollo Rural, Pesca y Alimentación, SAGARPA.