Lista de los peces de la provincia de Corrientes

Fil: Nadalin, Diego Oscar. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Zoología Vertebrados; ArgentinaFil: Protogino, Lucila Cristina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Zoología Vertebrados; ArgentinaFil: López, Hugo Luis. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Zoología Vertebrados; Argentin

Ictiólogos de la Argentina: Oscar Horacio Padin

This series will include all those people who, by means of their contributions, great and small, played a part in the consolidation of ichthyology in Argentina. The general plan of this work consists of individual factsheets containing a list of works by each author, along with reference bibliography and, whenever possible, personal pictures and additional material. The datasheets will be published primarily in chronological order, although this is subject to change by the availability of materials for successive editions. This work represents another approach for the recovery and revalorization of those who set the foundations of Argentine ichthyology while in diverse historical circumstances. I expect this to be the beginning of a major work that achieves the description of such a significant part of the history of natural sciences in Argentina

Ictiólogos de la Argentina : ^aPadin^nOscar Horacio^iDivisión Zoología Vertebrados. Facultad de Ciencias Naturales y Museo. Universidad Nacional de La Plata; Argentina

Fil: López, Hugo Luis. División Zoología Vertebrados. Facultad de Ciencias Naturales y Museo. Universidad Nacional de La Plata; ArgentinaFil: Protogino, Lucila Cristina. División Zoología Vertebrados. Facultad de Ciencias Naturales y Museo. Universidad Nacional de La Plata; ArgentinaFil: Ponte Gómez, Justina. División Zoología Vertebrados. Facultad de Ciencias Naturales y Museo. Universidad Nacional de La Plata; Argentin

Los peces del Neuquén

Fil: Miquelarena, Amalia María. División Zoología Vertebrados; Facultad de Ciencias Naturales y Museo; Universidad Nacional de La PlataFil: López, Hugo Luis. División Zoología Vertebrados; Facultad de Ciencias Naturales y Museo; Universidad Nacional de La PlataFil: Protogino, Lucila Cristina. Instituto de Limnología Dr. Raúl A. Ringuelet (ILPLA); Facultad de Ciencias Naturales y Museo; Universidad Nacional de La Plat

Desde el agua dulce hasta el talud: ecología de comunidades de peces en el Río de la Plata y el mar adyacente

The spatial pattern of fish assemblages and its relationship with factors along an environment gradient, from fresh to marine water environment along the Río de la Plata estuary (36°S, 56°W) the shelf and part of the slope, was examined using data from 22 sampling stations. Fish were sampled from all station with an Engel type trawl (200 mm stretched mesh in the wings, 120 mm stretched mesh in the cod ends, 4 m vertical opening and 15 m horizontal aperture) towed at 4 knots for 20 to 30 min per set. Cluster analysis and ordination analysis MDS were used to define spatial distribution of fish assemblages based on fish composition (abundance and biomass). BIO-ENV process was used to estimate assemblage association with depth, temperature and salinity of surface and bottom waters. The results of these analyses showed that the fish community along the riverine-marine gradient was structured in four assemblages: riverine, estuarine, shelf and slope. These assemblages were found to differ significantly in their species composition. Each assemblage was characterized by several common and discriminator species and characterized by differing environmental conditions. Bottom salinity and bottom temperature were the environmental variables most strongly associated with differences in assemblage structure across the various areas. The changes in assemblage structure between areas were gradual, with no sharp boundaries.Facultad de Ciencias Naturales y Muse

Astyanax hermosus, a new species from the Primero River basin, Córdoba, Argentina (Characiformes, Characidae)

A new species of the characid genus Astyanax is described from the endorheic Primero River basin, in central Argentina: Astyanax hermosus sp. n. This species can be distinguished from all other in the genus by the following combination of characters: body relatively low (33.1-38.7% SL); head short (23.5-27.1% SL); snout short (18.3-26.6% HL); interorbital broad (34.9-41.5% HL); maxilla with 1-3 teeth, usually one; iv-v, 17-22 anal-fin rays; 35-38 perforated scales on the lateral line; transverse scales 7/6; and distinctive color pattern, with Y-shaped humeral spot, a broad grayish longitudinal stripe on the flanks, extending weakly onto the middle caudal-fin rays, and extremely dark opercular, subopercular and preopercular regions. In addition, the males of the new species are distinguished by the presence of bony hooks in all their fins.Facultad de Ciencias Naturales y Muse

Desde el agua dulce hasta el talud: ecología de comunidades de peces en el Río de la Plata y el mar adyacente

The spatial pattern of fish assemblages and its relationship with factors along an environment gradient, from fresh to marine water environment along the Río de la Plata estuary (36°S, 56°W) the shelf and part of the slope, was examined using data from 22 sampling stations. Fish were sampled from all station with an Engel type trawl (200 mm stretched mesh in the wings, 120 mm stretched mesh in the cod ends, 4 m vertical opening and 15 m horizontal aperture) towed at 4 knots for 20 to 30 min per set. Cluster analysis and ordination analysis MDS were used to define spatial distribution of fish assemblages based on fish composition (abundance and biomass). BIO-ENV process was used to estimate assemblage association with depth, temperature and salinity of surface and bottom waters. The results of these analyses showed that the fish community along the riverine-marine gradient was structured in four assemblages: riverine, estuarine, shelf and slope. These assemblages were found to differ significantly in their species composition. Each assemblage was characterized by several common and discriminator species and characterized by differing environmental conditions. Bottom salinity and bottom temperature were the environmental variables most strongly associated with differences in assemblage structure across the various areas. The changes in assemblage structure between areas were gradual, with no sharp boundaries.Facultad de Ciencias Naturales y Muse

Fishes from the Arroyo Urugua-í (upper Parana basin, Misiones, Argentina) before impoundment of the dam

The ichthyofauna of the Arroyo Urugua-i, one of the most important tributaries of the Paraná River in Misiones (Argentina), is analized. The aim of this study is to provide information about the species occurring before the construction of the Urugua-i reservoir. A number of reported species are new references for the surveyed area, and the species Apareiodon piracicabae is reported for the first time for Argentina.Facultad de Ciencias Naturales y Muse

A new species of Bryconamericus (Characiformes: Characidae) from the Cuña-Pirú creek in north-eastern Argentina, with comments on accompanying fishes

A new species of the characid genus Bryconamericus is described from a tributary of the upper Paraná River, in the province of Misiones, Argentina. The new species can be distinguished from all other species of the genus by the presence of an irregular series of tricuspid teeth on the outer premaxillary row; branched anal fin rays 16-19; perforated scales on lateral line 37-40; a different coloration pattern, with a wide, silvery lateral band and a vertically-elongated humeral spot; very weak sexual dimorphism and the absence of bony hooks on fins in males. A list of fish incidentally collected with the new species is also included.Una nueva especie de Characidae del género Bryconamericus es descripta para un tributario del río Paraná superior, en la provincia de Misiones, Argentina. La nueva especie puede distinguirse de todas las otras especies del género, por presentar una serie irregular de dientes tricúspides en la hilera externa del premaxilar; radios ramificados de la aleta anal 16-19; escamas perforadas de la línea lateral 37-40; diferente patrón de coloración, con una ancha banda lateral plateada y una mancha humeral alargada verticalmente; dimorfismo sexual muy débil, ausencia en los machos de espinas óseas en las aletas. Una lista de peces, incidentalmente colectados con la nueva especie, es también incluida.Facultad de Ciencias Naturales y Muse

Ictiofauna de los arroyos de la reserva de biósfera Parque Costero del Sur

Los arroyos que conforman la Reserva de Biosfera Parque Costero del Sur desembocan en el Río de la Plata luego de recorrer un sector del noreste de la Provincia de Buenos Aires. La ictiofauna de la Reserva presenta los siguientes órdenes: Cypriniformes (1 especie), Characiformes (16 especies), Siluriformes (5 especies), Atheriniformes y Cyprinodontiformes (2 especies respectivamente), Synbranchiformes (1 especie) y Perciformes (3 especies). Las especies más abundantes son formas de pequeño tamaño como: mojarras (Cheirodon interruptus, Pseudocorynopoma doriae, Diapoma terofali, Hyphessobrycon meridionalis, Bryconamericus iheringii), dientudo transparente (Charax stenopterus), madrecitas (Jenynsia multidentata) y tachuelas (Corydoras paleatus). Se incluye una lista comentada de las especies presentes en el área de estudio con bibliografía de referencia del Parque Costero del Sur.Fil: Lopez, Hugo Luis. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Departamento Científico Zoología Vertebrados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; ArgentinaFil: Protogino, Lucila Cristina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Limnología "Dr. Raúl A. Ringuelet". Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Instituto de Limnología; ArgentinaFil: Mantinian, Julia Erika. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Departamento Científico Zoología Vertebrados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentin