The Catfish Genus Tetranematichthys (Auchenipteridae)

Vari, Richard P.; Ferraris, Carl J.

dc.contributor.author	Vari, Richard P.
dc.contributor.author	Ferraris, Carl J.
dc.date.accessioned	2007-01-12T16:30:14Z
dc.date.available	2007-01-12T16:30:14Z
dc.date.issued	2006
dc.identifier.citation	Copeia, 2006(2)	en
dc.identifier.uri	http://hdl.handle.net/10088/903
dc.description.abstract	The neotropical auchenipterid catfish genus Tetranematichthys is reviewed. Tetra-nematichthys was previously thought to be monotypic with its single species, T. quadrifilis, reported to have a broad range encompassing major portions of the Amazon basin and southern tributaries of the Rı´o Orinoco. Tetranematichthys quadrifilis was rather found to be endemic to the Rio Guapore´ in the southwestern portions of the Amazon basin and a new species of the genus is described from material originating in the upper Rio Negro system in Brazil and Venezuela and the upper Rı´o Orinoco basin in southern Venezuela. The new species is also apparently widespread within the Amazon basin and the southern and north-central portions of the Rı´o Orinoco system. The species of Tetranematichthys have distinctive modifications of the mandibular barbel and associated systems, which are proposed as synapomorphic for the species of the genus and that potentially function as a fishing lure.	en
dc.description.sponsorship	Research associated with this study was sup-ported by the Neotropical Lowland Research Program of the National Museum of Natural History, Smithsonian Institution, the All Catfish Species Inventory (NSF DEB-0315963), and the Herbert R. and Evelyn Axelrod Chair in System-atic Ichthyology in the Division of Fishes of the National Museum of Natural History, Smithso-nian Institution. We thank M. Stiassny, B. Brown, J. Lundberg, M. Sabaj, J. Armbruster, D. Tap-horn, M. de Pinna, J. de Figueiredo, O. Oyakawa, F. Lima, L. Page, and R. Robins who arranged for the loan and exchange of specimens, provided diverse forms of information, hospitality during visits, and myriad other types of assistance that facilitated this study. The photographs of fishes in this paper were prepared by S. Raredon and C. Moreira. The photo of the distal elaboration of the mandibular barbel was provided by S. Whit-taker (SEM-Lab, USNM). J. Burns graciously prepared and interpreted histological sections of the fleshy, distal elaboration of the mandibu-lar barbel of Tetranematichthys wallacei and other auchenipterids. This paper benefitted from the comments and suggestions of T. Munroe and B. Sidlauskas.	en
dc.format.extent	276108 bytes
dc.format.mimetype	application/pdf
dc.language.iso		en
dc.publisher	American Society of Ichthyologists and Herpetologists	en
dc.title	The Catfish Genus Tetranematichthys (Auchenipteridae)	en
dc.type	Article	en