Astyanax tumbayaensis, a new species from northwestern Argentina highlands (Characiformes: Characidae) with a key to the Argentinean species of the genus and comments on their distribution

A new species of the characid genus Astyanax is described from a man-made small channel connected with the Río Grande basin, in Jujuy Province, northwestern Argentina. This species can be distinguished from its congeners by the following combination of characters: body relatively high (39.2-45.3% SL...

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Detalles Bibliográficos
Autores principales: Miquelarena, Amalia María, Menni, Roberto Carlos
Formato: Articulo
Lenguaje:Inglés
Publicado: 2005
Materias:
Ciencias Naturales
Astyanax
Biodiversity
Distribution
New species
Northern Argentina
Ostariophysi
Taxonomy
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/83473
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-83473
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
Astyanax
Biodiversity
Distribution
New species
Northern Argentina
Ostariophysi
Taxonomy
spellingShingle Ciencias Naturales
Astyanax
Biodiversity
Distribution
New species
Northern Argentina
Ostariophysi
Taxonomy
Miquelarena, Amalia María
Menni, Roberto Carlos
Astyanax tumbayaensis, a new species from northwestern Argentina highlands (Characiformes: Characidae) with a key to the Argentinean species of the genus and comments on their distribution
topic_facet Ciencias Naturales
Astyanax
Biodiversity
Distribution
New species
Northern Argentina
Ostariophysi
Taxonomy
description A new species of the characid genus Astyanax is described from a man-made small channel connected with the Río Grande basin, in Jujuy Province, northwestern Argentina. This species can be distinguished from its congeners by the following combination of characters: body relatively high (39.2-45.3% SL); head short and heavy (24.0-26.7% SL); snout very short (16.1-20.8% HL); eye small (28.9-35.0% HL); interorbital very wide (38.8-44.1% HL); mouth sub-superior; maxilla short with 1-2 teeth; iii-v, 19-22 anal fin rays; 33-36 perforated scales on the lateral line, and a distinctive color pattern, consisting in a reticulated body, with dorsal, pelvic, anal, and caudal fins with dark margins. A very narrow lateral dark stripe ending in a caudal spot, and one large vertically elongated humeral spot. In addition the males of Astyanax tumbayaensis have bony hooks in the dorsal, pelvic, anal and caudal fins. A key for Argentinean species of Astyanax is provided. The primary traits of the distribution of species in the country are discussed, with reference to the main basins and some zoogeographically important localities.
format Articulo
Articulo
author Miquelarena, Amalia María
Menni, Roberto Carlos
author_facet Miquelarena, Amalia María
Menni, Roberto Carlos
author_sort Miquelarena, Amalia María
title Astyanax tumbayaensis, a new species from northwestern Argentina highlands (Characiformes: Characidae) with a key to the Argentinean species of the genus and comments on their distribution
title_short Astyanax tumbayaensis, a new species from northwestern Argentina highlands (Characiformes: Characidae) with a key to the Argentinean species of the genus and comments on their distribution
title_full Astyanax tumbayaensis, a new species from northwestern Argentina highlands (Characiformes: Characidae) with a key to the Argentinean species of the genus and comments on their distribution
title_fullStr Astyanax tumbayaensis, a new species from northwestern Argentina highlands (Characiformes: Characidae) with a key to the Argentinean species of the genus and comments on their distribution
title_full_unstemmed Astyanax tumbayaensis, a new species from northwestern Argentina highlands (Characiformes: Characidae) with a key to the Argentinean species of the genus and comments on their distribution
title_sort astyanax tumbayaensis, a new species from northwestern argentina highlands (characiformes: characidae) with a key to the argentinean species of the genus and comments on their distribution
publishDate 2005
url http://sedici.unlp.edu.ar/handle/10915/83473
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bdutipo_str Repositorios
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