Marigo Juliana, Vicente Ana Carolina Paulo, Valente Ana Luisa Schifino, Measures Lena, Santos Cláudia Portes
Laboratório de Genética Molecular e Microorganismos, Departamento de Genética, Instituto Oswaldo Cruz, FIOCRUZ, Av. Brasil 4365, Manguinhos, Rio de Janeiro, 21045-900, Brazil.
J Parasitol. 2008 Apr;94(2):505-14. doi: 10.1645/GE-1306.1.
Synthesium pontoporiae n. comb. is redescribed, together with Synthesium tursionis and Synthesium seymouri n. comb.; the parasites were obtained from stranded and accidentally caught cetaceans. The sucker ratio (ratio between widths of the oral and ventral suckers) in S. pontoporiae was 1:1.8-3.0 (mean 1:2.2); in S. tursionis was 1:0.8-1.2; and in S. seymouri was 1:0.5-0.7. Synthesium pontoporiae differed from its congeners by additional diagnostic characters, including: oval to lobed testes; small cirrus with pyriform proximal region and flexible, tubular distal region formed by evagination of ejaculatory duct; and vitellarium in small follicles extending from the level of the seminal vesicle to the posterior extremity of the body and not forming dendritic radial bunches. Data on the morphology of adult S. pontoporiae and S. tursionis were inferred from confocal laser microscopical observations.
重新描述了巴西河豚合盘吸虫（新组合名），以及突吻合盘吸虫和西氏合盘吸虫（新组合名）；这些寄生虫采自搁浅和意外捕获的鲸类动物。巴西河豚合盘吸虫的吸盘比率（口吸盘与腹吸盘宽度之比）为1:1.8 - 3.0（平均1:2.2）；突吻合盘吸虫为1:0.8 - 1.2；西氏合盘吸虫为1:0.5 - 0.7。巴西河豚合盘吸虫与其同属物种的区别还在于其他诊断特征，包括：椭圆形至叶状的睾丸；阴茎囊小，近端区域呈梨形，远端区域由射精管外翻形成灵活的管状；卵黄腺由小滤泡组成，从精囊水平延伸至身体后端，不形成树枝状放射束。巴西河豚合盘吸虫和突吻合盘吸虫成虫的形态数据是通过共聚焦激光显微镜观察推断得出的。
