Initial description of the phylogeography, population structure and genetic diversity of Atlantic spotted dolphins from Brazil and the Caribbean, inferred from analyses of mitochondrial and nuclear DNA

► High numbers of CR haplotypes were shared among Stenella frontalis samples. ► High haplotype and nucleotide diversity detected. ► High diversity was found in the first intron of the α-Lactalbumin gene. ► Population differentiation between the Caribbean and south/southern Brazil.