Results 1 to 10 of about 5,039 (193)

A new species of Pimelodus La Cépède, 1803 (Siluriformes: Pimelodidae) from rio Ribeira de Iguape basin, Brazil [PDF]

Neotropical Ichthyology, 2011
Pimelodus multicratifer, a new species, is described from the rio Ribeira de Iguape basin. The new species differs from the other Pimelodus species by the following features: 26 to 30 gill rakers on the first branchial arch; a combination of three to six
Frank Raynner V Ribeiro, Carlos Alberto S. de Lucena, Osvaldo T Oyakawa   +2 more
doaj   +5 more sources

Morphometric and molecular differentiation of Pimelodus grosskopfii and Pimelodus yuma (Siluriformes: Pimelodidae) [PDF]

Neotropical Ichthyology, 2023
Pimelodus grosskopfii and Pimelodus yuma, two species endemic to the Magdalena-Cauca basin in Colombia, overlap in the ranges of some of their diagnostic characters, which hampers their correct morphological identification.
Cristhian Danilo Joya, Ana María Ochoa-Aristizábal, José Gregorio Martínez, Edna Judith Márquez   +3 more
doaj   +2 more sources

Molecular Evidence Reveals Taxonomic Uncertainties and Cryptic Diversity in the Neotropical Catfish of the Genus Pimelodus (Siluriformes: Pimelodidae) [PDF]

Biology
Pimelodus is the most speciose genus of the family Pimelodidae, and is amply distributed in the Neotropical region. The species-level taxonomy and phylogenetic relationships within this genus are still poorly resolved, however.
Daniel Limeira Filho, Elidy Rayane de Rezende França, Dalton Kaynnan de Prado Costa, Renato Correia Lima, Maria Histelle Sousa do Nascimento, Jacqueline da Silva Batista, Maria Claudene Barros, Elmary da Costa Fraga   +7 more
doaj   +2 more sources

Pimelodus heraldoi Azpelicueta, 2001, a junior synonym of Pimelodus microstoma Steindachner, 1877 (Siluriformes: Pimelodidae) [PDF]

Neotropical Ichthyology, 2010
The examination of the holotype and 61 of the 64 paratypes of Pimelodus heraldoi, syntypes of P. microstoma and additional specimens from the upper rio Paraná showed that the former species is a junior synonym of the latter.
Frank Raynner V Ribeiro, Carlos Alberto S Lucena   +1 more
doaj   +4 more sources

Evidence for the true type-locality of Rhamdia quelen (Siluriformes: Heptapteridae), and the geographical origin and invalid neotype designation of four of its synonyms [PDF]

Neotropical Ichthyology, 2020
Historical information on the probable type-locality of Pimelodus quelen and of its four junior synonyms that share the same neotype, Pimelodus namdia, Pimelodus sebae, Heterobranchus sextentaculatus, and Silurus rivularis, is presented and discussed ...
Stefan Koerber, Roberto E. Reis
doaj   +1 more source

Development of microsatellite loci and population genetics of the catfish Pimelodus yuma (Siluriformes: Pimelodidae) [PDF]

Neotropical Ichthyology, 2021
Pimelodus yuma (formerly Pimelodus blochii) is a freshwater fish, endemic to the Colombian Magdalena-Cauca and Caribbean basins that experiences habitat disturbances resulting from anthropogenic activities.
Cristhian Danilo Joya, Ricardo Marcel Landínez-García, Edna Judith Márquez   +2 more
doaj   +1 more source

From fresh water to the slope: fish community ecology in the Río de la Plata and the sea beyond [PDF]

, 2010
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 (36ºS, 56ºW) the shelf and part of the slope, was examined using data from ...
García, Mirta L., Jaureguizar, Andrés Javier, Protogino, Lucila C.   +2 more
core   +5 more sources

Feeding spectra and activity of the freshwater crab Trichodactylus kensleyi (Decapoda: Brachyura: Trichodactylidae) at La Plata basin [PDF]

, 2014
Background: In inland water systems, it is important to characterize the trophic links in order to identify the ‘trophic species’ and, from the studies of functional diversity, understand the dynamics of matter and energy in these environments.
A Ruttner-Kolisko, AA Bonetto, AH Beltzer, AH Beltzer, AH Beltzer, B Hepher, BL Zimmermann, C Magalhães, C Sokolowicz, CE Cushing, CG Vélez, CP Balasubramanian, CS Pontes, DA Carvalho, DA Carvalho, DA Carvalho, E Massoia, EC Lopretto, ED Burress, F Fernandez de Miguel, FL Zilli, FLM Mantelatto, FLM Mantelatto, G Mancinelli, G Woodward, GAS Melo, H Aréchiga, HJ Dumont, I Ezcurra de Drago, I Nordhaus, II César, IJ McGaw, J Aguzzi, J Freire, J Josileen, JD Icely, JG Irons, JH Zar, JJ Bianchini, JJ Neiff, K Cheshire, KD Colpo, L Pinkas, LA López, M Devercelli, M Dobson, M Zimmer, MG Frick, N Kronfeld-Schor, N Lo, N Myers, P Kratina, PA Collins, PA Collins, PA Collins, PA Collins, R Pirela, RC Lajmanovich, RG Wear, RK Colwell, S Cannicci, S Daan, SM Linton, SM Linton, SP Hart, V Williner, V Williner, V Williner, WF Edmonson, WJ Mattson, ZT Long   +70 more
core   +1 more source

Contributions to the systematic of Pimelodidae (Osteichthyes, Siluriformes): basic and molecular cytogenetics on seven species of Pimelodus from three Brazilian hydrographic systems

Neotropical Ichthyology, 2018
Pimelodidae harbors several species and is widely distributed throughout the Neotropical region. Pimelodus is the genus with the largest number of species, however it is a polyphyletic group.
Simone C. Girardi, Carla S. Pavanelli, Vladimir P. Margarido   +2 more
doaj   +1 more source

Probabilistic meta-analysis of risk from the exposure to Hg in artisanal gold mining communities in Colombia [PDF]

, 2014
Colombia is one of the largest per capita mercury polluters in the world as a consequence of its artisanal gold mining activities. The severity of this problem in terms of potential health effects was evaluated by means of a probabilistic risk assessment
Clavijo, Diana, Gómez San Martín, Amaia, Miguel García, Eduardo de, Ortega Romero, Marcelo   +3 more
core   +2 more sources