Distribución geográfica y estado de conservación de los peces sierra Pristis spp (Pristiformes: Pristidae) en el Caribe sur

The former presence of sawfishes (Pristis spp) is confirmed for the southern Caribbean Sea from the coasts of Colombia and Venezuela, based on review of eleven rostral saws exhibited in businesses, museums and private collections, as well as bibliographic references, photographs and surveys to detect sightings or captures in both countries. We determined that Pristis pristis and Pristis pectinata were present in the southern Caribbean coasts of Colombia and Venezuela, but that they are now probably locally extinct.Se confirma la presencia en el pasado de las especies de pez sierra (Pristis spp) en el mar Caribe de Colombia y Venezuela, a partir de la revisión de once extensiones rostrales exhibidas en establecimientos, museos y colecciones de particulares, así como la consulta bibliográfica, encuestas y el examen de material fotográfico disponible sobre avistamientos o capturas realizadas en ambos países. Se determinó que las especies presentes en el Caribe de Colombia y Venezuela eran Pristis pristis y Pristis pectinata, las cuales en la actualidad se encuentran probablemente extintas localmente

Peces de la subcuenca del río Catatumbo, cuenca del Lago de Maracaibo, Colombia y Venezuela

Records from the literature supplemented by reviewing reference collection specimens of fish in the Humboldt Institute - IAvH-P, Rancho Grande Biological Station - EBRG and Museum of Natural Sciences Guanare -MCNG, show 109 freshwater native species and 14 of marine estuarine origin living in the Catatumbo river basin, making it the system with the highest diversity of fish species on Maracaibo Lake. These species belong to 10 orders, 39 families and 91 genera. The taxonomic orders with the highest number of families, genera and species were Siluriformes with 12 families, 42 genera and 61 species and Characiformes with 11 families, 24 genera and 32 species. The richest families were Loricariidae (16 genera and 25 species), Characidae (13 genera and 18 species) and Pimelodidae (6 genera and 8 species), there were between one and five species recorded in each of the remaining 37 families. Of the 123 species registered, 69 were collected and cataloged as sampling results of this study and 11 are new registers for Colombia. As for the Catatumbo 61 of the 68 species are considered endemic to the Maracaibo Lake basin and 40 were established themselves as commonly fished species for commercial purposes, six marine - estuarine and 34 freshwater. This paper discusses changes in the number of species registered in the different lists and their implications for species richness Catatumbo basin

Peces de la subcuenca del río Catatumbo, cuenca del Lago de Maracaibo, Colombia y Venezuela

Records from the literature supplemented by reviewing reference collection specimens of fish in the Humboldt Institute - IAvH-P, Rancho Grande Biological Station - EBRG and Museum of Natural Sciences Guanare -MCNG, show 109 freshwater native species and 14 of marine estuarine origin living in the Catatumbo river basin, making it the system with the highest diversity of fish species on Maracaibo Lake. These species belong to 10 orders, 39 families and 91 genera. The taxonomic orders with the highest number of families, genera and species were Siluriformes with 12 families, 42 genera and 61 species and Characiformes with 11 families, 24 genera and 32 species. The richest families were Loricariidae (16 genera and 25 species), Characidae (13 genera and 18 species) and Pimelodidae (6 genera and 8 species), there were between one and five species recorded in each of the remaining 37 families. Of the 123 species registered, 69 were collected and cataloged as sampling results of this study and 11 are new registers for Colombia. As for the Catatumbo 61 of the 68 species are considered endemic to the Maracaibo Lake basin and 40 were established themselves as commonly fished species for commercial purposes, six marine - estuarine and 34 freshwater. This paper discusses changes in the number of species registered in the different lists and their implications for species richness Catatumbo basin.Registros de literatura, complementados con la revisión de ejemplares de colección de referencia de peces del Instituto Humboldt - IAvH-P (Colombia), Estación Biológica de Rancho Grande - EBRG y Museo de Ciencias Naturales de Guanare - MCNG (Venezuela), muestran que 109 especies nativas de agua dulce y 14 de origen marino y estuarino habitan la subcuenca el río Catatumbo, constituyéndose en el sistema con mayor diversidad de especies de peces de la cuenca del Lago de Maracaibo. Estas especies pertenecen a 10 órdenes, 39 familias y 91 géneros. Los órdenes con mayor número de familias, géneros y especies fueron Siluriformes con 12 familias, 42 géneros y 60 especies, y Characiformes 11 familias, 24 géneros y 32 especies. Las familias con mayor riqueza fueron Loricariidae (16 géneros y 25 especies), Characidae (13 géneros y 18 especies) y Pimelodidae (6 géneros y 8 especies); presentando las restantes 37 familias entre una y cinco especies. De las 123 especies registradas, 69 fueron capturadas y catalogadas como resultados de los muestreos durante el presente estudio y 11 corresponden a nuevos registros para Colombia. Para el río Catatumbo se registraron 61 especies de las 68 consideradas endémicas para la cuenca del Lago de Maracaibo y se establecieron como especies pesqueras 40, de las cuales seis fueron marino-estuarinas y 34 dulceacuícolas. Se discute las variaciones del número de especies registradas en los diferentes listados y sus implicaciones en la riqueza de especies para la subcuenca del Catatumbo

Lista de los peces del delta del río Orinoco, Venezuela

The list of freshwater, estuarine and marine fishes known from the Orinoco river delta in Venezuela is updated, corrected and expanded. Based on recent field work, revision of the literature and museum collections, a list of 438 species was assembled that includes nine new records for the region. These are grouped in 20 orders, 82 families and 281 genera. The orders with the most species are Characiformes (132), Perciformes (99) and Siluriformes (87). Most of the fishes were found in freshwater (71 %) with estuarine and marine species amounting to only 39 %. About one third (29 % - 127 sp.) have economic importance as fishery resources. Four introduced species were found, three exotic and one transported from another Venezuelan drainage

Lista de los peces del delta del río Orinoco, Venezuela

The list of freshwater, estuarine and marine fishes known from the Orinoco river delta in Venezuela is updated, corrected and expanded. Based on recent field work, revision of the literature and museum collections, a list of 438 species was assembled that includes nine new records for the region. These are grouped in 20 orders, 82 families and 281 genera. The orders with the most species are Characiformes (132), Perciformes (99) and Siluriformes (87). Most of the fishes were found in freshwater (71 %) with estuarine and marine species amounting to only 39 %. About one third (29 % - 127 sp.) have economic importance as fishery resources. Four introduced species were found, three exotic and one transported from another Venezuelan drainage.Se actualiza, corrige y amplía la lista de peces dulceacuícolas, marinos y estuarinos del delta del río Orinoco, Venezuela. Con base en el trabajo de campo, revisión bibliográfica y de colecciones, se elabora una lista de 438 especies, de las cuales nueve son nuevos registros para la región. Estas están agrupadas en 20 órdenes, 82 familias y 281 géneros. Los órdenes con mayor representación específica fueron Characiformes (132 sp.), Perciformes (99 sp.) y Siluriformes (87 sp.). En función de la salinidad se obtuvo que la mayoría de las especies (71 %) fueron de hábitos estrictamente dulceacuícolas, seguidas por las de hábitos estuarinos y marinos (39 %). Un tercio de las especies (29 % - 127 sp.), presentan importancia como recursos pesqueros. Se registran cuatro especies introducidas (tres exóticas y una trasplantada)

Geographic distribution and conservation status of sawfish <em>Pristis spp<em> (Pristiformes: Pristidae) in the southern Caribbean Sea

The former presence of sawfishes (Pristis spp) is confirmed for the southern Caribbean Sea from the coasts of Colombia and Venezuela, based on review of eleven rostral saws exhibited in businesses, museums and private collections, as well as bibliographic references, photographs and surveys to detect sightings or captures in both countries. We determined that Pristis pristis and Pristis pectinata were present in the southern Caribbean coasts of Colombia and Venezuela, but that they are now probably locally extinct

Peces de la estrella fluvial inírida: ríos Guaviare, Inírida, Atabapo y Orinoco (Orinoquía colombiana)

Data derived from the literature supplemented with new collections made in the Inírida Fluvial Star (15th to 27th February 2008) reveal a species richness of 470 fishes species grouped in 224 genera, 40 families, and 10 orders. Its represents the higher species richness in the Orinoco River Basin. Orders with the largest numbers of species in the Star were Characiformes (237 species), Siluriformes (136 species), Perciformes (60 species), and Gymnotiformes (19 species), with the remaining 6 orders having from 1 to 7 species. At the family level, the Characidae has the greatest number of species (141 species), followed by the Cichlidae (55 species), Loricariidae (39 species), Pimelodidae (23 species), and Anostomidae (21 species); the remaining 35 families have 1 to 18 species. Present data indicate that 4 species are new records for the Orinoco River Basin and 19 are new for Colombia. The species richness by river was: 280 for the Inírida, 238 for Atabapo, 224 for Guaviare, and 82 for the Orinoco. In the Inírida Fluvial Star 335 species have commercial value as ornamentals, and 132 are harvested for food

Ictiofauna dulceacuícola y estuarina de la cuenca del golfo de Paria, Venezuela: composición y relaciones biogeográficas con la cuenca del Orinoco

The Paria Gulf Basin ichthyofauna comprises 218 species arranged in 14 orders and 50 families. Among these, 155 species are considered strictly freshwater and 63 species are euryhaline. The most representative orders were Characiformes (67 sp.) and Siluriformes (59 sp.), followed by the Perciformes (52 sp.), Cyprinodontiformes (9 sp.) and a miscellany of ten more orders that contain the remaining species. The family Characidae with 45 species (21.3 %) was the most diverse followed by the families Cichlidae with 20 species (9.5 %) and Loricariidae with 17 species (8.1 %). A list of the species is presented including habits and river system distribution. Four endemic species, Bryconamericus yokiae, Creagrutus hysginus, Chaetostoma venezuelae and Farlowella venezuelensis was found. The analyses of faunal similarity showed that the Paria gulf basin ichthyofauna shares almost all the species with the Orinoco basin. On the other hand, the presence of at least four endemic species seem to indicate that the Paria gulf basin represents a noteworthy biogeographyic area with an own evolutionary history. These aspects and the role of the Orinoco river delta on the fish species dispersion are discussed

Ictiofauna dulceacuícola y estuarina de la cuenca del golfo de Paria, Venezuela: composición y relaciones biogeográficas con la cuenca del Orinoco

The Paria Gulf Basin ichthyofauna comprises 218 species arranged in 14 orders and 50 families. Among these, 155 species are considered strictly freshwater and 63 species are euryhaline. The most representative orders were Characiformes (67 sp.) and Siluriformes (59 sp.), followed by the Perciformes (52 sp.), Cyprinodontiformes (9 sp.) and a miscellany of ten more orders that contain the remaining species. The family Characidae with 45 species (21.3 %) was the most diverse followed by the families Cichlidae with 20 species (9.5 %) and Loricariidae with 17 species (8.1 %). A list of the species is presented including habits and river system distribution. Four endemic species, Bryconamericus yokiae, Creagrutus hysginus, Chaetostoma venezuelae and Farlowella venezuelensis was found. The analyses of faunal similarity showed that the Paria gulf basin ichthyofauna shares almost all the species with the Orinoco basin. On the other hand, the presence of at least four endemic species seem to indicate that the Paria gulf basin represents a noteworthy biogeographyic area with an own evolutionary history. These aspects and the role of the Orinoco river delta on the fish species dispersion are discussed.La ictiofauna de la cuenca del golfo de Paria está integrada por 218 especies agrupadas en 14 órdenes y 50 familias. De estas, 155 especies son consideradas dulceacuícolas estrictas y 63 especies son eurihalinas. Los órdenes más representativos fueron Characiformes (67 sp.) y Siluriformes (59 sp.), seguidos por los Perciformes (52 sp.), Cyprinodontiformes (9 sp.) y una miscelánea de diez órdenes más, que agrupan a las especies restantes. La familia Characidae con 45 especies (21,3 %) fue la más diversa. Le siguen en importancia de riqueza específica las familias Cichlidae con 20 especies (9,5 %) y Loricariidae con 17 especies (8,1 %). Se presenta una lista general de las especies y su distribución por tipo de ambiente y subcuencas. Existen por lo menos cuatro especies endémicas Bryconamericus yokiae, Creagrutus hysginus, Chaetostoma venezuelae y Farlowella venezuelensis. Los análisis de similitud faunística mostraron que la ictiofauna de la cuenca del golfo de Paria comparte casi todas las especies con la cuenca del Orinoco. Por otro lado, la presencia de al menos cuatro especies endémicas parece indicar que la cuenca del golfo de Paria representa un área biogeográfica particular y con una historia evolutiva propia. Se discuten estos aspectos y el papel del delta del río Orinoco en la dispersión de las especies