Diversidad y abundancia ictiofaunística del río Grande de Térraba, sur de Costa Rica
The diversity, abundance and distributional pattern of freshwater fish communities in the Térraba River, south Costa Rica, were investigated from the early dry season of 2004 to early rain season of 2005. There have been no preview studies on the freshwater fish distribution in Térraba. Therefore, t...
| Autores: | , |
|---|---|
| Formato: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2008 |
| País: | Costa Rica |
| Recursos: | Universidad de Costa Rica |
| Repositorio: | Portal de Revistas UCR |
| Idioma: | español |
| OAI Identifier: | oai:portal.ucr.ac.cr:article/5720 |
| Acesso em linha: | https://revistas.ucr.ac.cr/index.php/rbt/article/view/5720 |
| Access Level: | acceso abierto |
| Palavra-chave: | Peces de agua dulce riqueza de especies abundancia distribución espacial y temporal río Grande de Térraba Costa Rica Freshwater fishes species richness abundance spatial and temporal distribution River Grande de Térraba |
| id |
CR_0ec3fb2cca6baf13ad42015a19d2ff41 |
|---|---|
| oai_identifier_str |
oai:portal.ucr.ac.cr:article/5720 |
| network_acronym_str |
CR |
| network_name_str |
Costa Rica |
| repository_id_str |
|
| dc.title.none.fl_str_mv |
Diversidad y abundancia ictiofaunística del río Grande de Térraba, sur de Costa Rica Diversidad y abundancia ictiofaunística del río Grande de Térraba, sur de Costa Rica |
| title |
Diversidad y abundancia ictiofaunística del río Grande de Térraba, sur de Costa Rica |
| spellingShingle |
Diversidad y abundancia ictiofaunística del río Grande de Térraba, sur de Costa Rica Rojas M., José Rodrigo Peces de agua dulce riqueza de especies abundancia distribución espacial y temporal río Grande de Térraba Costa Rica Freshwater fishes species richness abundance spatial and temporal distribution River Grande de Térraba |
| title_short |
Diversidad y abundancia ictiofaunística del río Grande de Térraba, sur de Costa Rica |
| title_full |
Diversidad y abundancia ictiofaunística del río Grande de Térraba, sur de Costa Rica |
| title_fullStr |
Diversidad y abundancia ictiofaunística del río Grande de Térraba, sur de Costa Rica |
| title_full_unstemmed |
Diversidad y abundancia ictiofaunística del río Grande de Térraba, sur de Costa Rica |
| title_sort |
Diversidad y abundancia ictiofaunística del río Grande de Térraba, sur de Costa Rica |
| dc.creator.none.fl_str_mv |
Rojas M., José Rodrigo Rodríguez S., Omar |
| author |
Rojas M., José Rodrigo |
| author_facet |
Rojas M., José Rodrigo Rodríguez S., Omar |
| author_role |
author |
| author2 |
Rodríguez S., Omar |
| author2_role |
author |
| dc.subject.none.fl_str_mv |
Peces de agua dulce riqueza de especies abundancia distribución espacial y temporal río Grande de Térraba Costa Rica Freshwater fishes species richness abundance spatial and temporal distribution River Grande de Térraba |
| topic |
Peces de agua dulce riqueza de especies abundancia distribución espacial y temporal río Grande de Térraba Costa Rica Freshwater fishes species richness abundance spatial and temporal distribution River Grande de Térraba |
| description |
The diversity, abundance and distributional pattern of freshwater fish communities in the Térraba River, south Costa Rica, were investigated from the early dry season of 2004 to early rain season of 2005. There have been no preview studies on the freshwater fish distribution in Térraba. Therefore, the aims of this study were to determine fish species richness, abundance and distribution there. Fish sampling was done using a combination of gears such as gill net, fine mesh net and visual observation. Thirty three species, 26 genera and 14 families were collected in four sampling sites along the river. The number and biomass captured during the entire study was 984 individuals and 147 410.9 g respectively. Most of them are carnivorous species (48%), 33.3% are omnivorous and 12% detritivorous, and only two species are herbivorous. The most important spe-cies in relative abundance (56.5%) and biomass (53.7%) in the study area was the machaca (Brycon behreae). It should be clear that although the list of fish species that occur in Térraba River is reasonably complete, knowl-edge of their ichthyogeographic history patterns is superficial. The main community component was secondary freshwater species; with 17 invading brackish water species and one introduced species (tilapia O. niloticus). Nine species are reported for the first time in this river. The diversity index H` varied from 2.32 (El Brujo) to 1.67 (Coto), a similar pattern was also showed for the other indexes. Most of our results were similar to those of previous studies on freshwater fish distribution elsewhere, however no significant correlation between spe-cies distribution and environmental variables was found, and we hypothesized that the depth and water velocity and geomorphological are major environmental variables that influence the fish distribution. Our findings are opposed to the tendency, for species composition, to increase from upstream to the mouth of the river, which is probably due to two major human activities (discharge of waste of pineapple fields and sediments in the main channel). These activities could constitute in the future a real threat for the fish population and other aquatic organisms. Growth rates, competition, predation pressures, community organization, biotic versus physical fac-tors in relation to distribution, and many other aspects of fish biology remain to be studied. Future surveys will involve more quantitative surveys in different seasons and over time to monitor the long-term variation in the diversity and abundance of freshwater fish species in Térraba. |
| publishDate |
2008 |
| dc.date.none.fl_str_mv |
2008-09-01 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/publishedVersion Article Text artículo original http://purl.org/coar/resource_type/c_2df8fbb1 info:eu-repo/semantics/article |
| format |
article |
| status_str |
publishedVersion |
| dc.identifier.none.fl_str_mv |
https://revistas.ucr.ac.cr/index.php/rbt/article/view/5720 10.15517/rbt.v56i3.5720 |
| url |
https://revistas.ucr.ac.cr/index.php/rbt/article/view/5720 |
| identifier_str_mv |
10.15517/rbt.v56i3.5720 |
| dc.language.none.fl_str_mv |
spa |
| language |
spa |
| dc.relation.none.fl_str_mv |
https://revistas.ucr.ac.cr/index.php/rbt/article/view/5720/5462 |
| dc.rights.none.fl_str_mv |
Derechos de autor 2008 Revista de Biología Tropical http://creativecommons.org/licenses/by/4.0 acceso abierto http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess |
| rights_invalid_str_mv |
Derechos de autor 2008 Revista de Biología Tropical http://creativecommons.org/licenses/by/4.0 acceso abierto http://purl.org/coar/access_right/c_abf2 |
| eu_rights_str_mv |
openAccess |
| dc.format.none.fl_str_mv |
application/pdf |
| dc.publisher.none.fl_str_mv |
Universidad de Costa Rica |
| publisher.none.fl_str_mv |
Universidad de Costa Rica |
| dc.source.none.fl_str_mv |
Revista de Biología Tropical; Vol. 56 No. 3 (2008): Volume 56 – Regular number 3 – September 2008; 1429–1447 Revista de Biología Tropical; Vol. 56 Núm. 3 (2008): Volumen 56 – Número regular 3 – Setiembre 2008; 1429–1447 Revista Biología Tropical; Vol. 56 N.º 3 (2008): Volumen 56 – Número regular 3 – Setiembre 2008; 1429–1447 2215-2075 0034-7744 10.15517/rbt.v56i3 reponame:Portal de Revistas UCR instname:Universidad de Costa Rica instacron:UCR |
| instname_str |
Universidad de Costa Rica |
| instacron_str |
UCR |
| institution |
UCR |
| reponame_str |
Portal de Revistas UCR |
| collection |
Portal de Revistas UCR |
| repository.name.fl_str_mv |
Portal de Revistas UCR - Universidad de Costa Rica |
| repository.mail.fl_str_mv |
jorge.polanco@ucr.ac.cr |
| _version_ |
1849325354911531008 |
| spelling |
Diversidad y abundancia ictiofaunística del río Grande de Térraba, sur de Costa RicaDiversidad y abundancia ictiofaunística del río Grande de Térraba, sur de Costa RicaRojas M., José RodrigoRodríguez S., OmarPeces de agua dulceriqueza de especiesabundanciadistribución espacial y temporalrío Grande de TérrabaCosta RicaFreshwater fishesspecies richnessabundancespatial and temporal distributionRiver Grande de TérrabaThe diversity, abundance and distributional pattern of freshwater fish communities in the Térraba River, south Costa Rica, were investigated from the early dry season of 2004 to early rain season of 2005. There have been no preview studies on the freshwater fish distribution in Térraba. Therefore, the aims of this study were to determine fish species richness, abundance and distribution there. Fish sampling was done using a combination of gears such as gill net, fine mesh net and visual observation. Thirty three species, 26 genera and 14 families were collected in four sampling sites along the river. The number and biomass captured during the entire study was 984 individuals and 147 410.9 g respectively. Most of them are carnivorous species (48%), 33.3% are omnivorous and 12% detritivorous, and only two species are herbivorous. The most important spe-cies in relative abundance (56.5%) and biomass (53.7%) in the study area was the machaca (Brycon behreae). It should be clear that although the list of fish species that occur in Térraba River is reasonably complete, knowl-edge of their ichthyogeographic history patterns is superficial. The main community component was secondary freshwater species; with 17 invading brackish water species and one introduced species (tilapia O. niloticus). Nine species are reported for the first time in this river. The diversity index H` varied from 2.32 (El Brujo) to 1.67 (Coto), a similar pattern was also showed for the other indexes. Most of our results were similar to those of previous studies on freshwater fish distribution elsewhere, however no significant correlation between spe-cies distribution and environmental variables was found, and we hypothesized that the depth and water velocity and geomorphological are major environmental variables that influence the fish distribution. Our findings are opposed to the tendency, for species composition, to increase from upstream to the mouth of the river, which is probably due to two major human activities (discharge of waste of pineapple fields and sediments in the main channel). These activities could constitute in the future a real threat for the fish population and other aquatic organisms. Growth rates, competition, predation pressures, community organization, biotic versus physical fac-tors in relation to distribution, and many other aspects of fish biology remain to be studied. Future surveys will involve more quantitative surveys in different seasons and over time to monitor the long-term variation in the diversity and abundance of freshwater fish species in Térraba.Desde el inicio de la estación seca del 2004 hasta la estación lluviosa de 2005, se llevó a cabo una investigación, con el objetivo de determinar la diversidad, abundancia y patrones de distribución de las comunidades de peces de agua dulce del río Grande de Térraba. El muestreo de peces se llevó a cabo utilizando una combinación de artes de pesca, entre ellas las redes agalleras, redes finas y observaciones visuales. Fueron recolectadas 33 especies, 14 familias y 26 géneros en las cuatro estaciones. Se capturaron 984 ejemplares para una biomasa de 147 410.9 g. La mayoría de las especies son carnívoras (48%), 33.3% son omnívoras y 12% detritívoras y sólo dos especies son herbívoras. La especie con mayor abundancia relativa (56.5%) y biomasa (53.7) fue la machaca (Brycon behreae). Aunque la lista de especies de peces en el río Térraba parece razonablemente completa, el conocimiento sobre los patrones ictiogegráficos es superficial. El principal componente comunitario son los peces de agua dulce secundarios con 17 especies estuarinas y una especie introducida (tilapia O. niloticus). Nueve especies son registradas por primera vez. El índice de diversidad H' varió de 2.32 (El Brujo) a 1.67 (Coto), un patrón similar se encontró para los otros índices aplicados. Muchos de nuestros resultados fueron similares a los de previos estudios sobre distribución de peces de agua dulce en otras zonas, sin embargo no se encontró correlación significativa entre la distribución de especies y las variables ambientales. Se hipotetiza que la profundidad, velocidad del agua y atributos geomorfológicos son las variables físicas que influencian la distribución de peces. Los resultados de este estudio difieren de la tendencia de que la riqueza de especies se incrementa desde la parte alta hacia la boca del río, esta condición se atribuye a dos actividades humanas(descarga al canal principal de desechos de los cultivos de piña y sedimentos contaminados). Estas actividades podrían ser, en el futuro, una amenaza real sobre los peces y otros organismos acuáticos. Se deben estudiar otros aspectos de la historia natural de los peces de la zona, tales como crecimiento, competencia, depredación, organización comunitaria y los factores físicos y/o bióticos relacionados con la distribución ictiofaunística.Universidad de Costa Rica2008-09-01info:eu-repo/semantics/publishedVersionArticleTextartículo originalhttp://purl.org/coar/resource_type/c_2df8fbb1info:eu-repo/semantics/articleapplication/pdfhttps://revistas.ucr.ac.cr/index.php/rbt/article/view/572010.15517/rbt.v56i3.5720Revista de Biología Tropical; Vol. 56 No. 3 (2008): Volume 56 – Regular number 3 – September 2008; 1429–1447Revista de Biología Tropical; Vol. 56 Núm. 3 (2008): Volumen 56 – Número regular 3 – Setiembre 2008; 1429–1447Revista Biología Tropical; Vol. 56 N.º 3 (2008): Volumen 56 – Número regular 3 – Setiembre 2008; 1429–14472215-20750034-774410.15517/rbt.v56i3reponame:Portal de Revistas UCRinstname:Universidad de Costa Ricainstacron:UCRspahttps://revistas.ucr.ac.cr/index.php/rbt/article/view/5720/5462Derechos de autor 2008 Revista de Biología Tropicalhttp://creativecommons.org/licenses/by/4.0acceso abiertohttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccess2022-06-06T17:30:40Zoai:portal.ucr.ac.cr:article/5720Portal 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:2025-08-13T10:14:38.974Portal de Revistas UCR - Universidad de Costa Ricafalse |
| score |
15,228081 |