A new genus and two new species of Aporhynchidae (Cestoda: Trypanorhyncha) from catsharks (Caranchiniformes: Scyliorhinidae) off Taiwan

0352282 - BC 2011 RIV US eng J - Journal Article
Caira, J. N. - Kuchta, Roman - Desjardins, L.
A new genus and two new species of Aporhynchidae (Cestoda: Trypanorhyncha) from catsharks (Caranchiniformes: Scyliorhinidae) off Taiwan.
Journal of Parasitology. Roč. 96, č. 6 (2010), s. 1185-1190. ISSN 0022-3395. E-ISSN 1937-2345
R&D Projects: GA AV ČR KJB600960902; GA MŠMT LC522
Institutional research plan: CEZ:AV0Z60220518
Keywords : Taiwan * catshark * Trypanorhyncha
Subject RIV: GJ - Animal Vermins ; Diseases, Veterinary Medicine
Impact factor: 1.208, year: 2010

New collections of cestodes from the spiral intestines of catsharks (Carcharhiniformes: Scyliorhinidae) off Taiwan have led to the discovery of a new genus and 2 new species of trypanorhynchs. These taxa are relatively unique among trypanorhynchs in their lack of all elements of the rhyncheal apparatus. The new genus, Nakayacestus n. gen., is considered to belong with Aporhynchus in the Aporhynchidae. In addition to lacking the rhyncheal apparatus, these 2 genera share circum-medullary vitelline follicles, postovarian testes, and complex terminal genitalia consisting of accessory, external, and internal seminal vesicles. The 2 genera differ conspicuously in spinithrix configuration; whereas both species of Nakayacestus n. gen. bear scolex spinitriches that are bifid, trifid, or pectinate, species of Aporhynchus either lack scolex spinitriches entirely or possess spathulate spinitriches. The configuration of the bothria of the 2 genera also differ conspicuously.
Permanent Link: http://hdl.handle.net/11104/0191820