Two new species of the genus Astyanax (Characiformes, Characidae) from the Paraná river basin in Argentina
- Autores
- Azpelicueta, María de las Mercedes; Casciotta, Jorge Rafael; Almirón, Adriana Edith
- Año de publicación
- 2002
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Astyanax leonidas and A. troya are described from the río Paraná basin in northeastern Argentina. Both species share similar number of anal-fin rays and perforated scales in the lateral line, one maxillary tooth, a deep dentary and the presence of small hooks on pectoral, pelvic, anal, and caudal fin of males. These characters are also present in A. ojiara and separate the three species from the remaining species of the genus. Astyanax leonidas is differenciated by the robust body, dorsal profile almost straight, a long and slender maxillary tooth, teeth of premaxillary inner row with notable long central cusp, dentary teeth of similar shape than those of premaxilla, and 4 large dentary teeth followed by one intermediate tooth, and 3 or 4 small teeth. Also this species does not have hooks on dorsal-fin rays and pelvic axillary scale. Astyanax troya has a dorsal profile with marked concavity on supraoccipital area, one broad and low pentacuspid maxillary teeth, teeth of inner premaxillary row gently expanded distally with cusps arising in the same line, central cusp of premaxillary teeth scarcely longer, 8-10 dentary teeth decreasing in size anteroposteriorly, and males with hooks in all fins and pelvic axillary scale.
Facultad de Ciencias Naturales y Museo - Materia
-
Ciencias Naturales
Astyanax
Characidae
Characiformes
Iguazú basin
Paraná basin - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/84676
Ver los metadatos del registro completo
id |
SEDICI_3a02d4d3c42a3e63d3c98f512250c57e |
---|---|
oai_identifier_str |
oai:sedici.unlp.edu.ar:10915/84676 |
network_acronym_str |
SEDICI |
repository_id_str |
1329 |
network_name_str |
SEDICI (UNLP) |
spelling |
Two new species of the genus Astyanax (Characiformes, Characidae) from the Paraná river basin in ArgentinaAzpelicueta, María de las MercedesCasciotta, Jorge RafaelAlmirón, Adriana EdithCiencias NaturalesAstyanaxCharacidaeCharaciformesIguazú basinParaná basinAstyanax leonidas and A. troya are described from the río Paraná basin in northeastern Argentina. Both species share similar number of anal-fin rays and perforated scales in the lateral line, one maxillary tooth, a deep dentary and the presence of small hooks on pectoral, pelvic, anal, and caudal fin of males. These characters are also present in A. ojiara and separate the three species from the remaining species of the genus. Astyanax leonidas is differenciated by the robust body, dorsal profile almost straight, a long and slender maxillary tooth, teeth of premaxillary inner row with notable long central cusp, dentary teeth of similar shape than those of premaxilla, and 4 large dentary teeth followed by one intermediate tooth, and 3 or 4 small teeth. Also this species does not have hooks on dorsal-fin rays and pelvic axillary scale. Astyanax troya has a dorsal profile with marked concavity on supraoccipital area, one broad and low pentacuspid maxillary teeth, teeth of inner premaxillary row gently expanded distally with cusps arising in the same line, central cusp of premaxillary teeth scarcely longer, 8-10 dentary teeth decreasing in size anteroposteriorly, and males with hooks in all fins and pelvic axillary scale.Facultad de Ciencias Naturales y Museo2002info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf243-259http://sedici.unlp.edu.ar/handle/10915/84676enginfo:eu-repo/semantics/altIdentifier/issn/0035-418Xinfo:eu-repo/semantics/altIdentifier/doi/10.5962/bhl.part.79588info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:16:16Zoai:sedici.unlp.edu.ar:10915/84676Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:16:16.321SEDICI (UNLP) - Universidad Nacional de La Platafalse |
dc.title.none.fl_str_mv |
Two new species of the genus Astyanax (Characiformes, Characidae) from the Paraná river basin in Argentina |
title |
Two new species of the genus Astyanax (Characiformes, Characidae) from the Paraná river basin in Argentina |
spellingShingle |
Two new species of the genus Astyanax (Characiformes, Characidae) from the Paraná river basin in Argentina Azpelicueta, María de las Mercedes Ciencias Naturales Astyanax Characidae Characiformes Iguazú basin Paraná basin |
title_short |
Two new species of the genus Astyanax (Characiformes, Characidae) from the Paraná river basin in Argentina |
title_full |
Two new species of the genus Astyanax (Characiformes, Characidae) from the Paraná river basin in Argentina |
title_fullStr |
Two new species of the genus Astyanax (Characiformes, Characidae) from the Paraná river basin in Argentina |
title_full_unstemmed |
Two new species of the genus Astyanax (Characiformes, Characidae) from the Paraná river basin in Argentina |
title_sort |
Two new species of the genus Astyanax (Characiformes, Characidae) from the Paraná river basin in Argentina |
dc.creator.none.fl_str_mv |
Azpelicueta, María de las Mercedes Casciotta, Jorge Rafael Almirón, Adriana Edith |
author |
Azpelicueta, María de las Mercedes |
author_facet |
Azpelicueta, María de las Mercedes Casciotta, Jorge Rafael Almirón, Adriana Edith |
author_role |
author |
author2 |
Casciotta, Jorge Rafael Almirón, Adriana Edith |
author2_role |
author author |
dc.subject.none.fl_str_mv |
Ciencias Naturales Astyanax Characidae Characiformes Iguazú basin Paraná basin |
topic |
Ciencias Naturales Astyanax Characidae Characiformes Iguazú basin Paraná basin |
dc.description.none.fl_txt_mv |
Astyanax leonidas and A. troya are described from the río Paraná basin in northeastern Argentina. Both species share similar number of anal-fin rays and perforated scales in the lateral line, one maxillary tooth, a deep dentary and the presence of small hooks on pectoral, pelvic, anal, and caudal fin of males. These characters are also present in A. ojiara and separate the three species from the remaining species of the genus. Astyanax leonidas is differenciated by the robust body, dorsal profile almost straight, a long and slender maxillary tooth, teeth of premaxillary inner row with notable long central cusp, dentary teeth of similar shape than those of premaxilla, and 4 large dentary teeth followed by one intermediate tooth, and 3 or 4 small teeth. Also this species does not have hooks on dorsal-fin rays and pelvic axillary scale. Astyanax troya has a dorsal profile with marked concavity on supraoccipital area, one broad and low pentacuspid maxillary teeth, teeth of inner premaxillary row gently expanded distally with cusps arising in the same line, central cusp of premaxillary teeth scarcely longer, 8-10 dentary teeth decreasing in size anteroposteriorly, and males with hooks in all fins and pelvic axillary scale. Facultad de Ciencias Naturales y Museo |
description |
Astyanax leonidas and A. troya are described from the río Paraná basin in northeastern Argentina. Both species share similar number of anal-fin rays and perforated scales in the lateral line, one maxillary tooth, a deep dentary and the presence of small hooks on pectoral, pelvic, anal, and caudal fin of males. These characters are also present in A. ojiara and separate the three species from the remaining species of the genus. Astyanax leonidas is differenciated by the robust body, dorsal profile almost straight, a long and slender maxillary tooth, teeth of premaxillary inner row with notable long central cusp, dentary teeth of similar shape than those of premaxilla, and 4 large dentary teeth followed by one intermediate tooth, and 3 or 4 small teeth. Also this species does not have hooks on dorsal-fin rays and pelvic axillary scale. Astyanax troya has a dorsal profile with marked concavity on supraoccipital area, one broad and low pentacuspid maxillary teeth, teeth of inner premaxillary row gently expanded distally with cusps arising in the same line, central cusp of premaxillary teeth scarcely longer, 8-10 dentary teeth decreasing in size anteroposteriorly, and males with hooks in all fins and pelvic axillary scale. |
publishDate |
2002 |
dc.date.none.fl_str_mv |
2002 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://sedici.unlp.edu.ar/handle/10915/84676 |
url |
http://sedici.unlp.edu.ar/handle/10915/84676 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/issn/0035-418X info:eu-repo/semantics/altIdentifier/doi/10.5962/bhl.part.79588 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
dc.format.none.fl_str_mv |
application/pdf 243-259 |
dc.source.none.fl_str_mv |
reponame:SEDICI (UNLP) instname:Universidad Nacional de La Plata instacron:UNLP |
reponame_str |
SEDICI (UNLP) |
collection |
SEDICI (UNLP) |
instname_str |
Universidad Nacional de La Plata |
instacron_str |
UNLP |
institution |
UNLP |
repository.name.fl_str_mv |
SEDICI (UNLP) - Universidad Nacional de La Plata |
repository.mail.fl_str_mv |
alira@sedici.unlp.edu.ar |
_version_ |
1844616035347464192 |
score |
13.070432 |