Spinitectus osorioi (Nematoda: Cystidicolidae) in the Mexican endemic fish Atherinella alvarezi (Atherinopsidae) from the Atlantic river drainage system in Chiapas, southern Mexico

0342851 - BC 2015 RIV BR eng J - Journal Article
Moravec, František - Salgado-Maldonado, G. - Caspeta-Mandujano, J. M.
Spinitectus osorioi (Nematoda: Cystidicolidae) in the Mexican endemic fish Atherinella alvarezi (Atherinopsidae) from the Atlantic river drainage system in Chiapas, southern Mexico.
Memorias do Instituto Oswaldo Cruz. Roč. 105, č. 1 (2010), s. 52-56. ISSN 0074-0276. E-ISSN 1678-8060
R&D Projects: GA MŠMT LC522
Institutional research plan: CEZ:AV0Z60220518
Keywords : Spinitectus * Atherinella * Mexico
Subject RIV: GJ - Animal Vermins ; Diseases, Veterinary Medicine
Impact factor: 2.058, year: 2010

Specimens of Spinitectus osorioi Choudhury and Pérez-Ponce de León, an intestinal nematode species previously considered to be specific to Chirostoma spp. and endemic to some lakes in the Pacific drainage in Michoacán, were collected from the freshwater fish Atherinella alvarezi (Díaz-Pardo) (Atherinopsidae) of the Michol River near Palenque, Chiapas, southern Mexico. Studies using microscopy revealed some taxonomically important, previously unreported or erroneously reported features of S. osorioi, such as the location of the vulva, the actual number and distribution of postanal papillae and phasmids, and the presence of a short median cuticular ridge anterior to the cloacal opening (in addition to two long subventral ridges). A key to species of Spinitectus parasitizing freshwater fishes in Mexico is provided.
Permanent Link: http://hdl.handle.net/11104/0185470