Taxonomic status of Choanoscolex lamothei García-Prieto, 1990 (Cestoda: Proteocephalidea)using morphological and molecular evidence

0157660 - PAU-O 20033047 RIV US eng J - Journal Article
Scholz, Tomáš - Rosas, V. R. - Pérez-Ponce de León, G. - Choudhury, A. - de Chambrier, A.
Taxonomic status of Choanoscolex lamothei García-Prieto, 1990 (Cestoda: Proteocephalidea)using morphological and molecular evidence.
Journal of Parasitology. Roč. 89, č. 6 (2003), s. 1212-1219. ISSN 0022-3395. E-ISSN 1937-2345
R&D Projects: GA ČR GA524/01/1314
Institutional research plan: CEZ:AV0Z6022909
Keywords : Cestoda * Proteocephalidea * Choanoscolex lamothei
Subject RIV: EG - Zoology
Impact factor: 1.137, year: 2003

The taxonomic status of Choanoscolex lamothei, a proteocephalidean tapeworm described from the catfish Ictalurus meridionalis (= I. furcatus) from Oaxaca, Mexico, was evaluated on the basis of morphological examination of types and freshly collected specimens from the type host and partial sequences of the large subunit (28S) ribosomal DNA. This study revealed that C. lamothei is a species of Megathylacoides (Proteocephalidae: Corallobothriinae) because of the medullary position of the genitalia (entirely cortical in Choanoscolex), the presence of semispherical sphincters on the suckers, a follicular ovary, and the alternating position of the vagina. Megathylacoides lamothei n. comb. differs from congeneric species in lacking an apical organ and in the number (130-208) of testes. Molecular data confirm the position of M. lamothei within Megathylacoides, which contains species parasitizing ictalurid fishes in North America.
Permanent Link: http://hdl.handle.net/11104/0055098