Results 41 to 50 of about 304 (125)

Ithyoclinostomum dimorphum Diesing, 1850 (Digenea, Clinostomidae) in Hoplias malabaricus (Erythrinidae) with the fi rst report of infection of the eyes

Helminthologia, 2018
The present study investigated the occurrence of metacercariae of Ithyoclinostomum dimorphum in Hoplias malabaricus in the basin of the São Francisco River in the state of Minas Gerais (Brazil). Twenty-nine fish were examined in June 2012 during a survey
Chagas De Souza D., Lima Correa L., Tavares-Dias M.   +2 more
doaj   +1 more source

Aspects of the Histopathology of Clarias gariepinus Infected With the Camallanid Parasite Procamallanus (Procamallanus) pseudolaeviconchus Moravec and Van As, 2015

Journal of Fish Diseases, Volume 49, Issue 5, May 2026.
ABSTRACT Histopathological studies of infections with the nematode Procamallanus (Procamallanus) pseudolaeviconchus Moravec and Van As, 2015, an intestinal parasite of Clarias gariepinus (Burchell, 1822), are scarce. The current study describes histopathological changes in the stomach of C. gariepinus infected with P.
Thabo Kenneth Matea, Annemariè Avenant‐Oldewage   +1 more
wiley   +1 more source

Hematologic and hepatic responses of the freshwater fish Hoplias malabaricus after saxitoxin exposure [PDF]

Toxicon, 2013
The bioaccumulation of saxitoxins (STX) in the trophic chain, mainly in freshwater, are not completely known. This work aimed to elucidate the effects of STX on Hoplias malabaricus through trophic bioassay. The fish were fed once every five days with Astyanax sp.
Helena C, Silva de Assis, Cesar A, da Silva, Eliane T, Oba, Juliana H, Pamplona, Maritana, Mela, Halina B, Doria, Izonete Cristina, Guiloski, Wanessa, Ramsdorf, Marta Margarete, Cestari   +8 more
openaire   +2 more sources

A new species of the genus Hoplias (Characiformes, Erythrinidae), a tararira from the lower Paraná River, in Misiones, Argentina

Acta Zoológica Lilloana, 2015
We describe Hoplias mbigua , a new species of the genus from the lower Paraná, in Misiones, with tooth-bearing plates on dorsal surface of basihyal and basibranchi- als and medial margins of contralateral dentaries converging towards the mandibular ...
M. de las Mercedes Azpelicueta, Mauricio F. Benítez, Danilo R. Aichino, C. M. Damián Mendez   +3 more
doaj  

Multi‐Seasonal eDNA Metabarcoding Highlights a Resurgence in Fish Diversity Across a Severely Impacted Estuarine Ecosystem

Aquaculture, Fish and Fisheries, Volume 6, Issue 2, April 2026.
ABSTRACT Aquatic ecosystems have been in an alarming state of decline for decades. In particular, estuarine ecosystems have experienced long‐term declines in fish diversity due to factors such as habitat degradation, pollution and altered hydrology. Monitoring these systems is often limited by the difficulty and cost of conventional survey methods.
Jake M. Jackman, Naiara Guimarães Sales, Chiara Benvenuto, Andrea Drewitt, Andrew Wolfenden, Peter E. Robins, Ilaria Coscia, Allan D. McDevitt   +7 more
wiley   +1 more source

Genotoxic evaluation of different doses of methylmercury (CH3Hg+) in Hoplias malabaricus

Ecotoxicology and Environmental Safety, 2012
Abstract The survey of the effects of toxic metals and its organic compounds are of critical importance because these compounds tend to accumulate in aquatic environments. In the present work, the genotoxic potential of methylmercury, an organomercurial compound with high toxicity and present in large amounts in fish of the Amazon due to the mining ...
Taynah Vicari, Marcos Vinícius Mocellin Ferraro, Wanessa Algarte Ramsdorf, Maritana Mela, Ciro Alberto de Oliveira Ribeiro, Marta Margarete Cestari   +5 more
openaire   +1 more source

Metazoarios parásitos en Hoplias malabaricus (Bloch, 1794) “fasaco” colectados en el mercado Belén, Iquitos-Perú

Revista Agrotecnológica Amazónica, 2023
El trabajo se realizó mediante la observación directa, búsqueda e identificación de la fauna endoparasitaria de Hoplias malabaricus tanto en órganos internos como en la musculatura de 50 ejemplares.
Cristhofer Cachique-Paredes, Manuel Enrique Navas-Vásquez, Carlos Alfredo Tuesta-Rojas, Germán Augusto Murrieta-Morey   +3 more
doaj   +1 more source

Genomic Insights Into Carnivorous Fish in the Characiformes

Ecology and Evolution, Volume 16, Issue 4, April 2026.
This study employed comparative genomic approaches using 12 high‐quality Characiformes genomes (covering nine subfamilies) with zebrafish as an outgroup to explore the molecular mechanisms underlying the carnivorous adaptation of Characiformes. Expanded gene families, positively selected genes, and rapidly evolving genes in carnivorous species were ...
Shihu Zhao, Xuesong Mei, Zhihao Zhang, Tian Xia, Shengyang Zhou, Yuehuan Dong, Shangbin He, Zhicheng Yao, Yuchun Li, Xiufeng Yang, Honghai Zhang   +10 more
wiley   +1 more source

Hoplias malabaricus

Hoplias malabaricus (Bloch 1794) Distribution Widespread Neotropical. Notes Barriga (1994), Galacatos et al. (2004), WCS (2007), Jácome-Negrete (2013), Jácome-Negrete et al. (2018), Tobes et al. (2022).
Escobar-Camacho, Daniel, Valdiviezo-Rivera, Jonathan, Carrillo-Moreno, Carolina, Argüello, Pablo, Swing, Kelly   +4 more
openaire   +2 more sources

Exploring ecohydrology through the lens of local fishers in the Bolivian Amazon

Ecosphere, Volume 17, Issue 4, April 2026.
Abstract The natural flow regimes of Andean‐Amazon tributaries play a vital role in sustaining their rich biodiversity and productive local fisheries, but ongoing and proposed alteration of river flow regimes by large dams threatens to negatively impact river ecosystems. Despite its importance, our understanding of how hydrologic variability influences
Lina G. Terrazas‐Villarroel, Jochen Wenninger, Marcelo Heredia‐Gómez, Nick van de Giesen, Michael E. McClain   +4 more
wiley   +1 more source