FIRST RECORD OF THE Saccostrea OYSTER IN BERTIOGA, SAO PAULO, BRAZIL

Autor(es)

Nunes Galvao, Marcia Santos ^[1] ; Ferreira Alves, Pedro Mestre ^[1] ; Silva Hilsdorf, Alexandre Wagner ^[2]

Afiliação do(s) autor(es)

^[1] Ctr Avancado Pesquisa Tecnol Agronegocio Pescado, Inst Pesca, Santos - Brazil

^[2] Univ Mogi Das Cruzes, Nucleo Integrado Biotecnol, POB 411, BR-08701970 Mogi Das Cruzes, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: BOLETIM DO INSTITUTO DE PESCA; v. 43, n. 4, p. 638-645, 2017.
• Citações Web of Science: 1

Resumo

This study presents the first record of an alien species of oyster in Bertioga, Sao Paulo State (Southeast Brazilian coast). Alien oysters were found attached to mangrove roots, rock shores, stones and gravel in the riverbed, forming clusters of 10-20 individuals and cohabiting with native oyster species (Crassostrea mangle, C. brasiliana and Ostrea sp.). Results are presented based on molecular analysis of specimens collected in the Itaguare River in June 2014. We used partial sequences of 16S and COI genes to assess the taxonomic identity. The Neighbor-joining method was used to analyze phenetic relationships among samples and the genetic diversity was calculated from the Kimura two-parameter (K2P) distances. The sequences in this work clustered with a sequence of ``Saccostrea cucullata{''} from Madagascar for both genes (COI and 16S) and presented a genetic distance of 1.7 -2.2% and 3.5-5.3% from other sequences of ``S. cucullata group{''} for 16S and COI fragments, respectively. The genetic distances from others Saccostrea species (S. palmula, S. glomerata and S. mordax) ranged from 4.7 to 9.1% for 16S and from 13.8 to 19.0% for COI. The genetic distances from other oysters' species sequences (genera Ostrea and Crassostrea) are over than 14.0% and 25.0% for 16S and COI, respectively. The record is discussed in the context of possible consequences on the environment and probable pathways of introduction. This is the first published record of a Saccostrea species in the southwestern Atlantic Ocean. (AU)

• Processo FAPESP: 07/50094-0 - Identificacao molecular e avaliacao da diversidade genetica de ostras do genero crassostrea do complexo estuario-lagunar de cananeia,sp: contribuicao ao manejo sustentavel do recurso pesqueiro.
• Beneficiário: Alexandre Wagner Silva Hilsdorf
• Modalidade de apoio: Auxílio à Pesquisa - Regular