A new species of Hisonotus (Siluriformes, Loricariidae) of the upper río Uruguay basin

A new species of the hypoptopomatine genus Hisonotus (Loricariidae) is described from a small tributary of the upper río Uruguay basin near the border between Uruguay and Brazil. The new species can be distinguished from all other congeners by the following combination of characters: (1) presence of...

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Detalles Bibliográficos
Autores principales: Aquino, Adriana Elbia, Schaefer, Scott A., Miquelarena, Amalia María
Formato: Articulo
Lenguaje:Inglés
Publicado: 2001
Materias:
Ciencias Naturales
Uruguay
ictiología
Brasil
ictiofauna
caracteres
peces
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/26296
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-26296
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Naturales
Uruguay
ictiología
Brasil
ictiofauna
caracteres
peces
spellingShingle Ciencias Naturales
Uruguay
ictiología
Brasil
ictiofauna
caracteres
peces
Aquino, Adriana Elbia
Schaefer, Scott A.
Miquelarena, Amalia María
A new species of Hisonotus (Siluriformes, Loricariidae) of the upper río Uruguay basin
topic_facet Ciencias Naturales
Uruguay
ictiología
Brasil
ictiofauna
caracteres
peces
description A new species of the hypoptopomatine genus Hisonotus (Loricariidae) is described from a small tributary of the upper río Uruguay basin near the border between Uruguay and Brazil. The new species can be distinguished from all other congeners by the following combination of characters: (1) presence of serrae along distal two thirds of posterior margin of pectoral-fin spine (versus serrae absent, posterior margin smooth); (2) odontodes along anterior margin of snout biserially arranged, dorsad and ventrad series separated by narrow odontode-free area covered by pad of soft tissue; (3) caudal peduncle short (27–34% SL, versus > 34% SL) and deep (13–15 % SL, versus < 13% SL); (4) eye large (15–19% HL, versus < 13% HL); and (5) caudal-fin pigmentation, when well defined, dark brown with a pair of whitish blotches on upper and lower lobes. The significance of the distribution of the new species is discussed relative to the degree of endemism of other fish groups in the Uruguay basin.
format Articulo
Articulo
author Aquino, Adriana Elbia
Schaefer, Scott A.
Miquelarena, Amalia María
author_facet Aquino, Adriana Elbia
Schaefer, Scott A.
Miquelarena, Amalia María
author_sort Aquino, Adriana Elbia
title A new species of Hisonotus (Siluriformes, Loricariidae) of the upper río Uruguay basin
title_short A new species of Hisonotus (Siluriformes, Loricariidae) of the upper río Uruguay basin
title_full A new species of Hisonotus (Siluriformes, Loricariidae) of the upper río Uruguay basin
title_fullStr A new species of Hisonotus (Siluriformes, Loricariidae) of the upper río Uruguay basin
title_full_unstemmed A new species of Hisonotus (Siluriformes, Loricariidae) of the upper río Uruguay basin
title_sort new species of hisonotus (siluriformes, loricariidae) of the upper río uruguay basin
publishDate 2001
url http://sedici.unlp.edu.ar/handle/10915/26296
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