Two new species of Aporhynchus (Trypanorhyncha: Aporhynchidae) from deep water lanternsharks (Squaliformes: Etmopteridae) in the Azores, Portugal

0352303 - BC 2011 RIV US eng J - Journal Article
Noever, C. - Caira, J. N. - Kuchta, Roman - Desjardins, L.
Two new species of Aporhynchus (Trypanorhyncha: Aporhynchidae) from deep water lanternsharks (Squaliformes: Etmopteridae) in the Azores, Portugal.
Journal of Parasitology. Roč. 96, č. 6 (2010), s. 1176-1184. ISSN 0022-3395. E-ISSN 1937-2345
R&D Projects: GA AV ČR KJB600960902; GA ČR GAP506/10/1994; GA MŠMT LC522
Institutional research plan: CEZ:AV0Z60220518
Keywords : lanternshark * Azores * Aporhynchus
Subject RIV: GJ - Animal Vermins ; Diseases, Veterinary Medicine
Impact factor: 1.208, year: 2010

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. 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. A key to the 4 species of Aporhynchus is provided.
Permanent Link: http://hdl.handle.net/11104/0191838