title: Perkinsus sp. infecting oyster Crassostrea rhizophorae (Guilding, 1828) on the coast of Bahia, Brazil.
abstract: This study investigated the occurrence of the protozoan Perkinsus in the oyster Crassostrea rhizophorae on the coast of Bahia State, Brazil. The oysters (n = 900) were collected in February-March and July-August 2010. The Ray's fluid thioglycollate medium (RFTM) analysis of gills and rectum revealed hypnospores of Perkinsus sp. with a high mean prevalence (63%). The infection intensity varied from very light to advanced. The polymerase chain reaction confirmed Perkinsus in 87.2% of the RFTM-positive oysters. Histological analysis showed trophozoites and schizonts phagocytized by hemocytes, mainly in the intestine and the stomach epithelium.
authors.affiliation: Universidade Estadual de Santa Cruz (UESC), Departamento de Ciências Biológicas (DCB), Rodovia Ilhéus-Itabuna, km 16, CEP 45650-900, Ilhéus, BA, Brazil.
authors.forename: Rosana Pinho
authors.initials: RP
authors.lastname: Brandão
authors.forename: Guisla
authors.initials: G
authors.lastname: Boehs
authors.forename: Rachel Costa
authors.initials: RC
authors.lastname: Sabry
authors.forename: Liliane Oliveira
authors.initials: LO
authors.lastname: Ceuta
authors.forename: Mariane Dos Santos Aguiar
authors.initials: Mdos S
authors.lastname: Luz
authors.forename: Fernando Ramos
authors.initials: FR
authors.lastname: Queiroga
authors.forename: Patrícia Mirella
authors.initials: PM
authors.lastname: da Silva
mesh_terms: D056893:Alveolata / Q000302:isolation & purification* / Q000502:physiology; D000818:Animals; D005506:Food Contamination; D005753:Gastric Mucosa / Q000469:parasitology; D006434:Hemocytes / Q000469:parasitology; D007413:Intestinal Mucosa / Q000469:parasitology; D010125:Ostreidae / Q000469:parasitology*; D010587:Phagocytosis / Q000502:physiology; D011528:Protozoan Infections / Q000469:parasitology*; D052939:Schizonts / Q000502:physiology; D017747:Seafood / Q000469:parasitology*; D053058:Trophozoites / Q000502:physiology