Results 31 to 40 of about 304 (125)

Karyotypic diversity between allopatric populations of the group Hoplias malabaricus (Characiformes: Erythrinidae): evolutionary and biogeographic considerations

Neotropical Ichthyology
Three populations of the group Hoplias malabaricus from the hydrographic basins of the São Francisco, Araguaia/Tocantins and Xingu Rivers in Brazil were analyzed using classic cytogenetic methods (Giemsa staining, C-banding and Ag-NORs) and molecular ...
Daniel Rodrigues Blanco, Roberto Laridondo Lui, Luiz Antonio Carlos Bertollo, Vladimir Pavan Margarido, Orlando Moreira Filho   +4 more
doaj   +1 more source

Global Burden of Clinostomum complanatum in Freshwater Fish: A Systematic Review and Meta‐Analysis of Prevalence and Pathological Effect

Aquaculture, Fish and Fisheries, Volume 6, Issue 4, August 2026.
ABSTRACT Clinostomum complanatum infection is a trematode parasite infecting diverse freshwater fish hosts, causing pathological damage and economic losses. Despite its veterinary and public health importance, its global burden remains insufficiently quantified. This study aimed to assess the global burden of C.
Mengesha Ayehu Getnet, Melkie Dagnaw Fenta, Asnakew Mulaw Berihun, Wilmien Luus Powell, Moges Maru Alemayehu, Tameru Gedefaw Mebratie, Zenebe Jemere Aragaw, Zewdu Seyoum Tarekegn   +7 more
wiley   +1 more source

Incidência de metilmercúrio em hoplias malabaricus na amazônia

Revista Intertox de Toxicologia, Risco Ambiental e Sociedade, 2020
Este trabalho objetivou avaliar a incidência de metilmercúrio em Hoplias malabaricus na Amazônia Brasileira, bem como possíveis danos causados pela alta ingestão das moléculas deste poluente ambiental bioacumulativo. Trata-se de uma revisão narrativa da literatura, realizada em novembro de 2019, nas bases de dados Pubmed, BVS, LILACS, Scielo e Anais ...
Caroline Stephanie Neves Vera, Daniela de Oliveira Daltro, Vanessa da Silva Gomes, Neuza Maria Miranda dos Santos   +3 more
openaire   +1 more source

Taxonomic study of Hoplias microlepis (Günther, 1864), a trans-Andean species of trahiras (Ostariophysi: Characiformes: Erythrinidae)

Neotropical Ichthyology
The Hoplias malabaricus species group represents one of the most complexes taxonomical problems in the systematics of Neotropical fishes, including specimens widely distributed in most drainages of South America and part of Central America with great ...
George M. T. Mattox, Alessandro G. Bifi, Osvaldo T. Oyakawa   +2 more
doaj   +1 more source

Nematodes in Hoplerytrinus unitaeniatus, Hoplias malabaricus and Pygocentrus nattereri (pisces characiformes) in Marajó Island, Brazil Nematóides em Hoplerytrinus unitaeniatus, Hoplias malabaricus e Pygocentrus nattereri (pisces characiformes) na Ilha de Marajó, Brasil

Revista Brasileira de Parasitologia Veterinária, 2012
The aim of this study was to evaluate the tegument, musculature and mesentery of 102 specimens of Hoplerytrinus unitaeniatus, 104 of Hoplias malabaricus and 101 of Pygocentrus nattereri, from Arari Lake, Marajó Island, State of Pará, Brazil.
Raimundo Nonato Moraes Benigno, Sérgio Carmona de São Clemente, Edilson Rodrigues Matos, Roberto Magalhães Pinto, Delir Corrêa Gomes, Marcelo Knoff   +5 more
doaj   +1 more source

Description of the Early Development of Hoplias intermedius (Günther, 1864) (Characiformes: Erythrinidae)

Journal of Morphology, Volume 287, Issue 7, July 2026.
This study provides the first description of the early development of Hoplias intermedius (Characiformes: Erythrinidae), from the embryonic to the juvenile stage. The morphological, meristic, and morphometric characterization contributes to understanding the ontogeny and developmental transitions of Neotropical fishes, supporting taxonomy, conservation,
Mateus Babichi Veiga de Souza, Renan Souza Volpato, Andréa Bialetzki   +2 more
wiley   +1 more source

Eustrongylides sp. (Nematoda, Dioctophymatoidea) parasitizing Hoplias malabaricus (Actinopterygii: Erythrinidae) collected from the state of Rio de Janeiro, Brazil

Revista Brasileira de Parasitologia Veterinária, 2019
Hoplias malabaricus (Characiformes, Erythrinidae), trahira, is a neotropical freshwater fish of economic and public health significance. A total of 45 specimens of H. malabaricus commercialized in the municipality of Magé, state of Rio de Janeiro, Brazil,
Bianca Porto Kuraiem, Marcelo Knoff, Erich Loza Telleria, Michelle Cristie Gonçalves da Fonseca, Leandro dos Santos Machado, Nathalie Costa da Cunha, Elmiro Rosendo do Nascimento, Gabrielle Fontenelle, Delir Corrêa Gomes, Sérgio Carmona de São Clemente   +9 more
doaj   +1 more source

A new endemic pearl cichlid of the ‘Geophagus’ brasiliensis (Cichliformes: Cichlidae) species group from the Piranga River, upper Doce River basin, southeastern Brazil

Journal of Fish Biology, Volume 108, Issue 6, Page 1687-1700, June 2026.
Abstract A new species of pearl cichlid of the ‘Geophagus’ brasiliensis species group, endemic to the Piranga River, a major tributary of the upper Doce River basin in the state of Minas Gerais, southeastern Brazil, is herein described. The new species is delimited using an integrative approach, with molecular‐based species delimitation methods coupled
Cidimar E. de Assis, Jorge A. Dergam, Amanda F. Cunha, Valéria N. Machado, Tomas Hrbek, Natállia M. de F. Vicente, Victor de Queiroz, Elisabeth Henschel   +7 more
wiley   +1 more source

Aquatic and Terrestrial Invertebrates Support Fish Assemblages of Amazonian Streams

Freshwater Biology, Volume 71, Issue 5, May 2026.
ABSTRACT The Amazonian stream network is remarkable not only for its extent but also for its rich fish diversity. These streams are interconnected with the surrounding forests. However, key ecological aspects of Amazonian freshwater ecosystems, such as energy flows and carbon sources sustaining fish assemblages, remain poorly understood. In this study,
Pedro H. S. Basilio, Cecília G. Leal, Débora R. de Carvalho, Gabriel L. Brejão, Dennys H. C. Drager, Gilberto N. Salvador, Marcos A. Alves‐Filho, Vladimir E. Costa, Gabriel O. Ferraz, Gustavo S. Ferreira, Rafael P. Leitão, Luciano F. A. Montag, Jady V. A. S Santos, Everton C. Silva, Paulo S. Pompeu   +14 more
wiley   +1 more source

Acute and subchronic effects of petroleum on the freshwater fish Hoplias aff. malabaricus [PDF]

Brazilian Journal of Biology
Abstract Petroleum water soluble fraction (WSF) impairs organisms, but damages may vary among cell and tissue levels. The aim of the present study was to evaluate the acute (24 h, 48 h, 72 h) and subchronic effects (36 days) of WSF (0%, 25% and 100%) in juveniles of the Neotropical top predator fish Hoplias aff. malabaricus.
R. M. Santos, A. C. Petry, V. L. Sousa, H. O. Souza, A. Azevedo, A. R. Soares, L. I. Weber   +6 more
openaire   +5 more sources