Results 11 to 20 of about 1,537 (218)

Linking rivers, mixing faunas: How artificial connectivity between the Middle and Upper Paraná River basins shapes fish diversity in a tributary of the Itaipu Reservoir, Brazil. [PDF]

J Fish Biol
Abstract This work aimed to investigate the distribution and occurrence of fish species along the São Francisco Falso Braço Norte (SFFBN) River basin, a tributary of the Middle Paraná River basin now artificially connected to the Upper Paraná ecoregion, to evaluate how such connectivity may affect the biogeographic distribution and regional composition
Kampfert LEP, Maicrovicz JC, Blanco DR, Lange D, Pavanelli CS, Brandão H.   +5 more
europepmc   +2 more sources

Hydrological Connectivity Enhances Fish Biodiversity in Amazonian Mining Ponds: Insights From eDNA and Traditional Sampling. [PDF]

Mol Ecol
ABSTRACT Artisanal and small‐scale gold mining (ASGM) expansion in the Madre de Dios region of the Peruvian Amazon has transformed primary forests into a novel wetland complex of thousands of abandoned mining ponds. Despite their ecological relevance, post‐mining recovery of these systems remains understudied, particularly regarding fish biodiversity ...
Timana-Mendoza C, Reyes-Calderón A, Venail P, Britzke R, Santa-Maria MC, Araújo-Flores JM, Silman M, Fernandez LE.   +7 more
europepmc   +2 more sources

Threshold responses of floating meadow fish communities to floodplain forest cover in the lower Amazon River. [PDF]

Conserv Biol
Abstract Forest cover is positively associated with fish biomass and fisheries yield in the Amazon River floodplain, and many species enter flooded forests to feed, spawn, or seek refuge from predation. Floating macrophyte beds, known as floating meadows, in Amazon floodplains support high fish diversity and serve as nursery habitat for many fishes of ...
Grinstead S, Arantes CC, Winemiller KO, Kelso-Winemiller LC, de Oliveira JA, Petrere M, Freitas CEC.   +6 more
europepmc   +2 more sources

Early Biogeography of Otophysi Points to the Neotropics as the Cradle of Characiphysan Fishes. [PDF]

Ecol Evol
Otophysan fishes represent 70% of living freshwater fishes with 12,000 species. Relationships among their four orders were explored through a dense taxonomic sampling including 529 complete mitochondrial genomes and 4 nuclear genes for 324 species.
Lenglin A, Hidalgo M, Miranda G, De la Sota A, Caminade P, Belkhir K, Otero O, Antoine PO, Garcia-Davila C, Hubert N.   +9 more
europepmc   +2 more sources

Establishing new grid-size-dependent attributes to rank areas of endemism for conservation priorities. [PDF]

Cladistics
Abstract Delineating Areas of Endemism (AEs) is crucial for identifying priority areas for biodiversity conservation in a spatial planning framework. Endemicity Analysis in the NDM/VNDM software is one of the primary methodologies for its delineation.
Frota A, da Graça WJ.
europepmc   +2 more sources

Morphological and molecular evidence reveals a new species of Characidium from the Ucayali-Urubamba Piedmont, Peru, and novel molecular clades are proposed within the genus. [PDF]

J Fish Biol
Abstract A new species of Characidium is described from the Urubamba River basin, within the Ucayali‐Urubamba Piedmont ecoregion, Peru. The new species can be readily distinguished from all congeners, except Characidium cacah, Characidium chicoi, Characidium helmeri, Characidium mirim, Characidium nana, Characidium nupelia, Characidium sterbai ...
Oliveira-Silva L, Britzke R, Meza-Vargas V, Hidalgo MH, Faustino-Fuster D, Oliveira C, Zanata AM.   +6 more
europepmc   +2 more sources

The Impact Mechanism of Inter-Basin Water Transfer on Fish Assemblages Was Revealed Using a Model of Terminal Reservoirs. [PDF]

Ecol Evol
Using three terminal reservoirs of an inter‐basin water transfer project (IBWT) as a model system, our study revealed an impact mechanism of IBWTs on fish assemblages. Our study found an underestimated effect of IBWTs on fish assemblages through diverted fish accompanying periodic water transfer, and the distance of water transfer, reservoir operation ...
Cheng Z, Wang A, Cui Y, Gao L, Cheng F, Shu F, Xie S.   +6 more
europepmc   +2 more sources

Cytogenetic analyses of three species of Moenkhausia Eigenmann, 1903 (Characiformes, Characidae) from Lower Paraná River (Misiones, Argentina)

Caryologia, 2022
Moenkhausia Eigenmann, 1903 is one of the more specious genera among Characidae family, composed by around 100 species. Three members of this genus were cytogenetically analyzed: M. dichroura Kner, 1858, M.
Kevin I. Sánchez
doaj   +1 more source

Length–weight relations of fishes (Actinopterygii) from karst streams in the Bodoquena Plateau, western Brazil [PDF]

Acta Ichthyologica et Piscatoria, 2018
The presently reported study provides the length–weight relations (LWR) for 23 species from headwater streams of the Bodoquena Plateau, which is located on the southern border of the Brazilian Pantanal.
F. Severo-Neto, A. Lopes D., A. Ferreira, T. Martínez B., O. Roque F.   +4 more
doaj   +3 more sources

A new species of Moenkhausia (Characiformes, Characidae) from the Içá River, Amazon Basin, northern Brazil

Zoosystematics and Evolution, 2016
A new species of the genus Moenkhausia is described from the Içá River, Amazon Basin. Moenkhausia britskii sp. n. is most similar to M. grandisquamis and M. xinguensis. From these two species it is readily distinguished by the pigmentation pattern of the
Valter M. Azevedo-Santos, Ricardo C. Benine   +1 more
doaj   +3 more sources