Results 21 to 30 of about 2,013 (196)

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

New species of Trichomycterus (Siluriformes: Trichomycteridae) from the High Andean Plateau of Argentina [PDF]

Zootaxa, 2018
Trichomycterus varii new species, is described from a small tributary of the High Andean Plateau Region, Jujuy, Argentina. The new species is distinguished from other species of Trichomycterus by the following characters: the caudal peduncle expanded in the area of procurrent caudal-fin rays, distal tip of pelvic fin not reaching the anus when ...
Fernandez, Luis Alfredo, Bize, Julieta Andreoli   +1 more
  +11 more sources

A case of complete albinism in the catfish Cambeva guareiensis (Siluriformes: Trichomycteridae) [PDF]

Biota Neotropica, 2020
Abstract: Albinism has been recorded in Neotropical freshwater fishes, mostly for nocturnal or cryptobiotic species. We report herein a case of albinism in the catfish Cambeva guareiensis (Trichomycteridae) from the Guareí River basin, Upper Paraná River basin, southeastern Brazil.
Valter M. Azevedo-Santos, Fernando M. Pelicice, Ivan Sazima, Raoul Henry   +3 more
openaire   +5 more sources

Inferring functional diversity from environmental DNA metabarcoding

Environmental DNA, Volume 5, Issue 5, Page 934-944, September 2023., 2023
Functional diversity indices need species identification for being measured, and behind the strength of eDNA fish inventories for detecting species, taxa list may be composed of different taxonomic level. We measure the variability when measuring such indices between inventories made of species and using random species from genus or families that can ...
Céline Condachou, Tristan Milhau, Jérôme Murienne, Sébastien Brosse, Sébastien Villéger, Alice Valentini, Tony Dejean, David Mouillot   +7 more
wiley   +1 more source

Conservation threats and future prospects for the freshwater fishes of Ecuador: A hotspot of Neotropical fish diversity

Journal of Fish Biology, Volume 99, Issue 4, Page 1158-1189, October 2021., 2021
ABSTRACT Freshwater fish communities in Ecuador exhibit some of the highest levels of diversity and endemism in the Neotropics. Unfortunately, aquatic ecosystems in the country are under serious threat and conditions are deteriorating. In 2018–19, the government of Ecuador sponsored a series of workshops to examine the conservation status of Ecuador's ...
Windsor E. Aguirre, Gabriela Alvarez‐Mieles, Fernando Anaguano‐Yancha, Ricardo Burgos Morán, Roberto V. Cucalón, Daniel Escobar‐Camacho, Iván Jácome‐Negrete, Pedro Jiménez Prado, Enrique Laaz, Katherin Miranda‐Troya, Ronald Navarrete‐Amaya, Fredy Nugra Salazar, Willan Revelo, Juan F. Rivadeneira, Jonathan Valdiviezo Rivera, Edwin Zárate Hugo   +15 more
wiley   +1 more source

Fish as predators and prey: DNA‐based assessment of their role in food webs

Journal of Fish Biology, Volume 98, Issue 2, Page 367-382, February 2021., 2021
Abstract Fish are both consumers and prey, and as such part of a dynamic trophic network. Measuring how they are trophically linked, both directly and indirectly, to other species is vital to comprehend the mechanisms driving alterations in fish communities in space and time.
Michael Traugott, Bettina Thalinger, Corinna Wallinger, Daniela Sint   +3 more
wiley   +1 more source

Restoration Effects of the Riparian Forest on the Intertidal Fish Fauna in an Urban Area of the Amazon River. [PDF]

ScientificWorldJournal, 2016
Urbanization causes environmental impacts that threaten the health of aquatic communities and alter their recovery patterns. In this study, we evaluated the diversity of intertidal fish in six areas affected by urbanization (areas with native vegetation, deforested areas, and areas in process of restoration of vegetation) along an urban waterfront in ...
Sá-Oliveira JC, Ferrari SF, Vasconcelos HC, Mendes-Junior RN, Araújo AS, Costa-Campos CE, Nascimento WS, Isaac VJ.   +7 more
europepmc   +2 more sources

NEW RECORDS OF HATCHERIA MACRAEI (SILURIFORMES, TRICHOMYCTERIDAE) FROM CHILEAN PROVINCE [PDF]

Gayana (Concepción), 2009
RESUMEN Describimos nuevos registros de Hatcheria macraei (bagre Patagonico) en el area sur-central de Chile. Ello representa una ampliacion significativa del rango de distribucion de esta especie. Estos nuevos registros tienen importantes implicancias biogeograficas, dado que reportamos a H.
Unmack, Peter J, Habit, Evelyn M, Johnson, Jerald B   +2 more
openaire   +4 more sources

Physical mapping of the 5S and 18S rDNA in ten species of Hypostomus Lacépède 1803 (Siluriformes: Loricariidae): evolutionary tendencies in the genus. [PDF]

ScientificWorldJournal, 2014
Hypostomus is a diverse group with unclear aspects regarding its biology, including the mechanisms that led to chromosome diversification within the group. Fluorescence in situ hybridization (FISH) with 5S and 18S rDNA probes was performed on ten Hypostomini species. Hypostomus faveolus, H. cochliodon, H. albopunctatus, H. aff. paulinus, and H. topavae
Bueno V, Venere PC, Thums Konerat J, Zawadzki CH, Vicari MR, Margarido VP.   +5 more
europepmc   +2 more sources

Trichomycteridae Bleeker 1858

, 2021
Published as part of Angulo, Arturo, 2021, New records and range extensions to the Costa Rican freshwater fish fauna, with an updated checklist, pp.
openaire   +2 more sources