Three new species of Hemibrycon (Characiformes: Characidae) from the Magdalena River Basin, Colombia
Fish biodiversity of aquatic ecosystems is highly threatened by different economic activities driven by human populations, and its description is increasingly a priority. For the Cauca-Magdalena River system we have described 14 species, and the purpose of this paper was to describe three new specie...
| Authors: | , , , , |
|---|---|
| Format: | article |
| Status: | Published version |
| Publication Date: | 2013 |
| Country: | Costa Rica |
| Institution: | Universidad de Costa Rica |
| Repository: | Portal de Revistas UCR |
| Language: | English |
| OAI Identifier: | oai:portal.ucr.ac.cr:article/11965 |
| Online Access: | https://revistas.ucr.ac.cr/index.php/rbt/article/view/11965 |
| Access Level: | Open access |
| Keyword: | tropical fish new taxon scales morphology pigmentation pattern pez tropical nuevo taxon escamas morfología patrón de pigmentación |
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Three new species of Hemibrycon (Characiformes: Characidae) from the Magdalena River Basin, Colombia Tres nuevas especies de Hemibrycon (Characiformes: Characidae) de la cuenca del río Magdalena, Colombia |
| title |
Three new species of Hemibrycon (Characiformes: Characidae) from the Magdalena River Basin, Colombia |
| spellingShingle |
Three new species of Hemibrycon (Characiformes: Characidae) from the Magdalena River Basin, Colombia Román Valencia, César tropical fish new taxon scales morphology pigmentation pattern pez tropical nuevo taxon escamas morfología patrón de pigmentación |
| title_short |
Three new species of Hemibrycon (Characiformes: Characidae) from the Magdalena River Basin, Colombia |
| title_full |
Three new species of Hemibrycon (Characiformes: Characidae) from the Magdalena River Basin, Colombia |
| title_fullStr |
Three new species of Hemibrycon (Characiformes: Characidae) from the Magdalena River Basin, Colombia |
| title_full_unstemmed |
Three new species of Hemibrycon (Characiformes: Characidae) from the Magdalena River Basin, Colombia |
| title_sort |
Three new species of Hemibrycon (Characiformes: Characidae) from the Magdalena River Basin, Colombia |
| dc.creator.none.fl_str_mv |
Román Valencia, César Ruiz C., Raquel I. Taphorn, Donald C. Mancera Rodriguez, Néstor J. García Alzate, Carlos A. |
| author |
Román Valencia, César |
| author_facet |
Román Valencia, César Ruiz C., Raquel I. Taphorn, Donald C. Mancera Rodriguez, Néstor J. García Alzate, Carlos A. |
| author_role |
author |
| author2 |
Ruiz C., Raquel I. Taphorn, Donald C. Mancera Rodriguez, Néstor J. García Alzate, Carlos A. |
| author2_role |
author author author author |
| dc.subject.none.fl_str_mv |
tropical fish new taxon scales morphology pigmentation pattern pez tropical nuevo taxon escamas morfología patrón de pigmentación |
| topic |
tropical fish new taxon scales morphology pigmentation pattern pez tropical nuevo taxon escamas morfología patrón de pigmentación |
| description |
Fish biodiversity of aquatic ecosystems is highly threatened by different economic activities driven by human populations, and its description is increasingly a priority. For the Cauca-Magdalena River system we have described 14 species, and the purpose of this paper was to describe three new species belonging to the same genus Hemibrycon from the Nare and Guatapé River drainages of the middle Magdalena River, Colombia. The description was based on a series of 200 specimens, and the use of morphometric, meristic and osteological characters, as well as fish distribution and morphogeometric analytical methods. We have found that Hemibrycon fasciatus n. sp. (n=54) differs from other species of Hemibrycon (that also have a vertical humeral spot) in having: melanophores outlining the posterior margins of the scales along sides of body; humeral spot extending onto posterior margin of opercle; a dark lateral stripe, formed by deep pigment that is continuous with the peduncular spot; the toothed portion of the maxilla not reaching the dorsal margin of the dentary (vs. toothed portion of maxilla extending beyond dorsal margin of dentary); all maxillary teeth tricuspid (vs. some unicuspid teeth present on maxilla). H. cardalensis n. sp. (n=64) differs in having: a vertically elongate humeral spot that extends one or two scales below the lateral line canal. H. cardalensis n. sp. differs from all congeners in having the pigment of the caudal spot restricted to the ventral half of the caudal peduncle, and in having melanophores around the anterior scales of the lateral line. Hemibrycon antioquiae n. sp. (n=82) differs in having a circular humeral spot. It differs from the other species with a circular humeral spot, like H. mikrostiktos, in having a projection of disperse melanophores extending from the dorsal margin of the humeral spot to below the lateral stripe. Habitat data and environmental impacts caused by the construction of reservoirs for hydroelectric projects and other threats in the area are included, as well as a key to all species Hemibrycon present in the Magdalena River Basin. The synonymy of H. pautensis with H. polyodon is discussed and H. pautensis is revalidated. |
| publishDate |
2013 |
| dc.date.none.fl_str_mv |
2013-09-01 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/publishedVersion artículo original http://purl.org/coar/resource_type/c_2df8fbb1 info:eu-repo/semantics/article |
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article |
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publishedVersion |
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https://revistas.ucr.ac.cr/index.php/rbt/article/view/11965 10.15517/rbt.v61i3.11965 |
| url |
https://revistas.ucr.ac.cr/index.php/rbt/article/view/11965 |
| identifier_str_mv |
10.15517/rbt.v61i3.11965 |
| dc.language.none.fl_str_mv |
eng |
| language |
eng |
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https://revistas.ucr.ac.cr/index.php/rbt/article/view/11965/11267 |
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Derechos de autor 2013 Revista de Biología Tropical acceso abierto http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess |
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Derechos de autor 2013 Revista de Biología Tropical acceso abierto http://purl.org/coar/access_right/c_abf2 |
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openAccess |
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application/pdf |
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Universidad de Costa Rica |
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Universidad de Costa Rica |
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Revista de Biología Tropical; Vol. 61 No. 3 (2013): Volume 61 – Regular number 3 – September 2013; 1365–1387 Revista de Biología Tropical; Vol. 61 Núm. 3 (2013): Volumen 61 – Número regular 3 – Setiembre 2013; 1365–1387 Revista Biología Tropical; Vol. 61 N.º 3 (2013): Volumen 61 – Número regular 3 – Setiembre 2013; 1365–1387 2215-2075 0034-7744 10.15517/rbt.v61i3 reponame:Portal de Revistas UCR instname:Universidad de Costa Rica instacron:UCR |
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Universidad de Costa Rica |
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UCR |
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UCR |
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Portal de Revistas UCR |
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Portal de Revistas UCR |
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Portal de Revistas UCR - Universidad de Costa Rica |
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jorge.polanco@ucr.ac.cr |
| _version_ |
1849325358134853632 |
| spelling |
Three new species of Hemibrycon (Characiformes: Characidae) from the Magdalena River Basin, ColombiaTres nuevas especies de Hemibrycon (Characiformes: Characidae) de la cuenca del río Magdalena, ColombiaRomán Valencia, CésarRuiz C., Raquel I.Taphorn, Donald C.Mancera Rodriguez, Néstor J.García Alzate, Carlos A.tropical fishnew taxonscalesmorphologypigmentation patternpez tropicalnuevo taxonescamasmorfologíapatrón de pigmentaciónFish biodiversity of aquatic ecosystems is highly threatened by different economic activities driven by human populations, and its description is increasingly a priority. For the Cauca-Magdalena River system we have described 14 species, and the purpose of this paper was to describe three new species belonging to the same genus Hemibrycon from the Nare and Guatapé River drainages of the middle Magdalena River, Colombia. The description was based on a series of 200 specimens, and the use of morphometric, meristic and osteological characters, as well as fish distribution and morphogeometric analytical methods. We have found that Hemibrycon fasciatus n. sp. (n=54) differs from other species of Hemibrycon (that also have a vertical humeral spot) in having: melanophores outlining the posterior margins of the scales along sides of body; humeral spot extending onto posterior margin of opercle; a dark lateral stripe, formed by deep pigment that is continuous with the peduncular spot; the toothed portion of the maxilla not reaching the dorsal margin of the dentary (vs. toothed portion of maxilla extending beyond dorsal margin of dentary); all maxillary teeth tricuspid (vs. some unicuspid teeth present on maxilla). H. cardalensis n. sp. (n=64) differs in having: a vertically elongate humeral spot that extends one or two scales below the lateral line canal. H. cardalensis n. sp. differs from all congeners in having the pigment of the caudal spot restricted to the ventral half of the caudal peduncle, and in having melanophores around the anterior scales of the lateral line. Hemibrycon antioquiae n. sp. (n=82) differs in having a circular humeral spot. It differs from the other species with a circular humeral spot, like H. mikrostiktos, in having a projection of disperse melanophores extending from the dorsal margin of the humeral spot to below the lateral stripe. Habitat data and environmental impacts caused by the construction of reservoirs for hydroelectric projects and other threats in the area are included, as well as a key to all species Hemibrycon present in the Magdalena River Basin. The synonymy of H. pautensis with H. polyodon is discussed and H. pautensis is revalidated.Un total de 14 especies del género Hemibrycon Günther se han encontrado en la cuenca del río Magdalena- Cauca de Colombia. En este estudio, se describen tres nuevas especies de peces del género Hemibrycon Günther 1864 (Characiformes: Characidae) de la cuenca del río Magdalena con una serie de 200 ejemplares, con caracteres morfométricos, merísticos, osteológicos y distribución, y bajo un método de análisis morfogeométrico: Hemibrycon fasciatus n. sp. (n=54), se distingue de otras especies de Hemibrycon por una mancha humeral vertical y por presentar: melanóforos sobre el borde posterior de las escamas a lo largo de la parte lateral del cuerpo; la mancha humeral extendida sobre el borde posterior del opérculo; una banda lateral oscura, formada por pigmentos profundos que se prolongan con la mancha peduncular; la longitud del maxilar con dientes que no alcanzan el borde dorsal del dentarío (vs. longitud con dientes del maxilar sobrepasan el borde dorsal del dentarío); todos los dientes del maxilar tricúspides (vs. dientes unicúspides en el maxilar). H. cardalensis n. sp. (n=64) se distingue de todos sus congéneres por presentar los pigmentos del pedúnculo caudal restringidos a su mitad ventral, y por exhibir melanóforos alrededor de las escamas anteriores del canal latero sensorial. Hemibrycon antioquiae n. sp. (n=82) se distingue en el área predorsal que es sobresaliente respecto a la superficie dorsal del cráneo, por una banda lateral oscura, y por la forma de la mancha peduncular que es ancha y se extiende sobre la banda lateral (vs. banda lateral plateada sin melanóforos y mancha peduncular no conspicua). Se distingue de todos sus congéneres por la forma rectangular del borde posterior del cleitro. Se incluyen datos del hábitat, los efectos antrópicos generados por la construcción de embalses o represas para proyectos hidroeléctricos en el hábitat propio de las especies y una clave taxonómica de las especies de Hemibrycon presentes del río Magdalena. También se discute la sinonimia de H. pautensis con H. polyodon y por lo tanto se revalida H. pautensis.Universidad de Costa Rica2013-09-01info:eu-repo/semantics/publishedVersionartículo originalhttp://purl.org/coar/resource_type/c_2df8fbb1info:eu-repo/semantics/articleapplication/pdfhttps://revistas.ucr.ac.cr/index.php/rbt/article/view/1196510.15517/rbt.v61i3.11965Revista de Biología Tropical; Vol. 61 No. 3 (2013): Volume 61 – Regular number 3 – September 2013; 1365–1387Revista de Biología Tropical; Vol. 61 Núm. 3 (2013): Volumen 61 – Número regular 3 – Setiembre 2013; 1365–1387Revista Biología Tropical; Vol. 61 N.º 3 (2013): Volumen 61 – Número regular 3 – Setiembre 2013; 1365–13872215-20750034-774410.15517/rbt.v61i3reponame:Portal de Revistas UCRinstname:Universidad de Costa Ricainstacron:UCRenghttps://revistas.ucr.ac.cr/index.php/rbt/article/view/11965/11267Derechos de autor 2013 Revista de Biología Tropicalacceso abiertohttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccess2022-10-13T16:00:01Zoai:portal.ucr.ac.cr:article/11965Portal de revistashttps://revistas.ucr.ac.cr/Universidadhttp://www.ucr.ac.crhttps://revistas.ucr.ac.cr/index.php/index/oaijorge.polanco@ucr.ac.crCosta RicaNo aplicaNo aplicaNo aplicaopendoar:2025-08-13T10:15:39.445Portal de Revistas UCR - Universidad de Costa Ricafalse |
| score |
15,812455 |