Noever C, Caira J N, Kuchta R, Desjardins L
Leibniz-Institut für Meereswissenschafen (IFM–GEOMAR), Düsternbrooker Weg 20, 24105 Kiel, Germany.
J Parasitol. 2010 Dec;96(6):1176-84. doi: 10.1645/GE-2387.1. Epub 2010 Jun 17.
New collections of cestodes from the spiral intestines of the lanternsharks Etmopterus spinax and Etmopterus pusillus off the island of Faial, in the Azores, Atlantic Ocean, have yielded 2 new species of trypanorhynchs belonging to Aporhynchus. Both species share the distinctive lack of all elements of the rhyncheal system that are characteristic of this genus. The identity of Aporhynchus norvegicus is clarified to allow it to be distinguished from A. menezesi n. sp., which also parasitizes E. spinax. This new species differs conspicuously from its congeners in that its mature and gravid proglottids are wider than long, rather than longer than wide, and also in its lack of spinitriches on the scolex. Aporhynchus pickeringae n. sp., the new species from E. pusillus , differs from all of its congeners except A. norvegicus in that it is a relatively delicate worm with relatively fewer testes. It also possesses fewer proglottids and a wider pedunculus scolecis than does A. norvegicus. Sections through the scolex of A. menezesi n. sp. support use of the term bothriate, rather than difossate, in reference to the scolex configuration of some trypanorhynchs. A key to the 4 species of Aporhynchus is provided.
在大西洋亚速尔群岛法亚尔岛附近，从灯笼鲨（Etmopterus spinax和Etmopterus pusillus）的螺旋肠道中采集到的新绦虫样本，发现了2种属于Aporhynchus属的新锥吻绦虫物种。这两个物种都明显缺少该属特有的吻部系统的所有结构。明确了挪威Aporhynchus norvegicus的身份，以便将其与同样寄生于E. spinax的新物种A. menezesi区分开来。这个新物种与其同属物种明显不同，其成熟和妊娠节片宽大于长，而不是长大于宽，并且其头节上没有棘刺。来自E. pusillus的新物种Aporhynchus pickeringae n. sp.，除了A. norvegicus之外，与所有同属物种都不同，它是一种相对纤细的蠕虫，睾丸相对较少。它的节片也比A. norvegicus少，并且其头节柄更宽。对A. menezesi n. sp.头节的切片分析支持了在描述某些锥吻绦虫头节形态时使用“具吸沟的”而非“双凹的”这一术语。提供了Aporhynchus属4个物种的检索表。
