Spinitectus aguapeiensis n. sp (Nematoda: Cystidicolidae) from Pimelodella avanhandavae Eigenmann (Siluriformes: Heptapteridae) in the River Aguapei, Upper Parana River Basin, Brazil

0478888 - BC 2018 RIV NL eng J - Journal Article
Acosta, A.A. - González-Solís, David - Da Silva, R.J.
Spinitectus aguapeiensis n. sp (Nematoda: Cystidicolidae) from Pimelodella avanhandavae Eigenmann (Siluriformes: Heptapteridae) in the River Aguapei, Upper Parana River Basin, Brazil.
Systematic Parasitology. Roč. 94, č. 6 (2017), s. 649-656. ISSN 0165-5752. E-ISSN 1573-5192
R&D Projects: GA ČR(CZ) GBP505/12/G112
Institutional support: RVO:60077344
Keywords : fresh-water fish * southern Mexico * intestine * osorioi * Chiapas
OECD category: Veterinary science
Impact factor: 1.273, year: 2017

Nematodes belonging to Spinitectus Fourment, 1883 (Nematoda: Cystidicolidae) were found in the intestine of Pimelodella avanhandavae Eigenmann (Siluriformes: Heptapteridae) from the Aguapei River, Brazil. They represent a new species, Spinitectus aguapeiensis n. sp., which differs morphologically from its congeners in the body length, the number of spinose rings, the location of the excretory pore, the number of precloacal papillae and the length of the spicules. The new species is the first South American species within the genus with a remarkably spirally coiled posterior extremity in males and the largest spicules. It is also the second species with the highest number of precloacal papillae and has unique shape of the small spicule. Spinitectus aguapeiensis n. sp. is the first helminth species found in P. avanhandavae, the fourth species of this genus recorded in the River Parana Basin and the sixth species of Spinitectus in South America.
Permanent Link: http://hdl.handle.net/11104/0274944