Results 41 to 50 of about 418 (159)
Hydrological Connectivity Enhances Fish Biodiversity in Amazonian Mining Ponds: Insights From eDNA and Traditional Sampling. [PDF]
Mol EcolABSTRACT 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 +7 more
europepmc +2 more sources
Chromosomal divergence and maintenance of sympatric Characidium fish species (Crenuchidae, Characidiinae) [PDF]
Hereditas, 2003 Cytogenetic studies were performed in two syntopic species of Characidium, C. lauroi and Characidium sp. cf. C. alipioi, from Ribeirão Grande, Paraíba do Sul river basin. Both species have diploid number 2n=50 chromosomes, but differ in chromosome shape, C-banding pattern and location of nucleolar organizing regions. In Characidium sp. cf. C. alipioi a
Liano, Centofante +3 more
openaire +2 more sources
The fish fauna of streams from the upper rio Tocantins basin, Goiás State, Brazil [PDF]
Check List, 2013 This study aimed to provide a list of fish species from tributaries of rio das Almas and rio Maranhão basins, in the upper rio Tocantins basin, Goiás State, Brazil. For this study 21 stream stretches were sampled during the dry season in July 2010.
Alexander Claro-García, Oscar Shibatta
doaj +3 more sources
A new, narrowly distributed, and critically endangered species of Characidium (Characiformes: Crenuchidae) from the Distrito Federal, Central Brazil [PDF]
Neotropical Ichthyology, 2021 A new species of Characidium is described from the Cerrado biome, in Brasília, Distrito Federal, Central Brazil. The new species can be readily diagnosed by the presence of two or three longitudinal rows of dots along the body sides, absence of bars, by ...
Marcelo Roberto Souto de Melo +2 more
doaj +1 more source
Larval development of Characidium orientale (Actinopterygii: Crenuchidae) a small Neotropical fish
Iheringia. Série Zoologia, 2022 ABSTRACT The Characidium orientale Buckup & Reis, 1997 larvae development is described using specimens collected in the natural environment of Antas River, in the Taquari-Antas river basin, Rio Grande do Sul, Brazil. Were considerate ontogenetic changes in morphology, pigmentation, fin morphology, and meristic characters.
Douglas Ticiani +3 more
openaire +4 more sources
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 +15 more
wiley +1 more source
Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 31, Issue 5, Page 1136-1149, May 2021., 2021 Abstract The extent and intensity of impacts of multiple new dams in the Amazon basin on specific biological groups are potentially large, but still uncertain and need to be better understood. It is known that river disruption and regulation by dams may affect sediment supplies, river channel migration, floodplain dynamics, and, as a major adverse ...
Edgardo M. Latrubesse +8 more
wiley +1 more source
Biometric relations of freshwater fishes of the Suaza River (Huila Department, Colombia) [PDF]
Acta Ichthyologica et Piscatoria, 2016 The knowledge of freshwater fishes in remote Andean mountains is scarce and restricted to changes of occurrence distribution along a specific gradient.
I. Tobes +3 more
doaj +3 more sources
, 2022 Ohara, Willian M., Pastana, Murilo, Camelier, Priscila (2023): The monophyly of Crenuchinae and description of two new species of Poecilocharax (Teleostei: Crenuchidae) based on phenotypic and genotypic evidence. Zoological Journal of the Linnean Society
Pastana, Murilo +2 more
core +1 more source
A new sexually dichromatic miniature Characidium (Characiformes: Crenuchidae) from the rio Guaporé, rio Madeira basin, Brazil, with remarkable morphological novelties to the genus [PDF]
Neotropical Ichthyology, 2023 A new miniature species of Characidium is described from the midde rio Guaporé, rio Madeira basin, Rondônia, Brazil. The new species can be readily distinguished from all congeners by the sexual dichromatism, with females having narrow dark bars on body ...
Angela Maria Zanata +2 more
doaj +1 more source