title: Green turtles (Chelonia mydas) foraging at Arvoredo Island in Southern Brazil: Genetic characterization and mixed stock analysis through mtDNA control region haplotypes.
abstract: We analyzed mtDNA control region sequences of green turtles (Chelonia mydas) from Arvoredo Island, a foraging ground in southern Brazil, and identified eight haplotypes. Of these, CM-A8 (64%) and CM-A5 (22%) were dominant, the remainder presenting low frequencies (< 5%). Haplotype (h) and nucleotide (π) diversities were 0.5570 ± 0.0697 and 0.0021 ± 0.0016, respectively. Exact tests of differentiation and AMOVA Φ(ST) pairwise values between the study area and eight other Atlantic foraging grounds revealed significant differences in most areas, except Ubatuba and Rocas/Noronha, in Brazil (p > 0.05). Mixed Stock Analysis, incorporating eleven Atlantic and one Mediterranean rookery as possible sources of individuals, indicated Ascension and Aves islands as the main contributing stocks to the Arvoredo aggregation (68.01% and 22.96%, respectively). These results demonstrate the extensive relationships between Arvoredo Island and other Atlantic foraging and breeding areas. Such an understanding provides a framework for establishing adequate management and conservation strategies for this endangered species.
authors.affiliation: Programa de Pós-Graduação em Oceanografia Biológica, Universidade Federal do Rio Grande, Rio Grande, RS Brazil.
authors.forename: Maíra Carneiro
authors.initials: MC
authors.lastname: Proietti
authors.forename: Paula
authors.initials: P
authors.lastname: Lara-Ruiz
authors.forename: Júlia Wiener
authors.initials: JW
authors.lastname: Reisser
authors.forename: Luciano
authors.initials: L
authors.lastname: da Silva Pinto
authors.forename: Odir Antonio
authors.initials: OA
authors.lastname: Dellagostin
authors.forename: Luis Fernando
authors.initials: LF
authors.lastname: Marins