Results 61 to 70 of about 663 (166)

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

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

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

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

Isoform expression in the multiple soluble malate dehydrogenase of Hoplias malabaricus (Erythrinidae, Characiformes)

Brazilian Journal of Biology
Kinetic properties and thermal stabilities of Hoplias malabaricus liver and skeletal muscle unfractionated malate dehydrogenase (MDH, EC 1.1.1.37) and its isolated isoforms were analyzed to further study the possible sMDH-A* locus duplication evolved ...
M. R. Aquino-Silva, M. L. B. Schwantes, A. R. Schwantes   +2 more
doaj   +1 more source

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

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

Oxygen consumption from air and water, ammonia and urea‐N excretion, and Na+ fluxes during progressive aquatic hypoxia in Amazonian armoured catfish Pterygoplichthys gibbiceps and Pterygoplichthys pardalis

Journal of Fish Biology, Volume 108, Issue 3, Page 867-880, March 2026.
Abstract The Amazonian loricariid fish Pterygoplichthys gibbiceps, from the Rio Negro, and Pterygoplichthys pardalis, from the Rio Solimões, are facultative air‐breathers that can use the stomach as an air‐breathing organ. Measurement of oxygen uptake under progressive aquatic hypoxia revealed a relatively high hypoxia resistance of both species.
Bernd Pelster, Chris M. Wood, Adalberto Luis Val   +2 more
wiley   +1 more source

Nitrogen excretion and oxygen consumption under severe hypoxia in siluriform fishes from the Amazon

Journal of Fish Biology, Volume 108, Issue 3, Page 881-893, March 2026.
Abstract Siluriform fishes collected from the Rio Negro and Rio Solimões proved to be highly resistant to aquatic hypoxia. In all four species analysed in this study, aquatic oxygen consumption significantly decreased from normoxic levels at water PO2 values near 1 kPa. Air‐breathing activity was observed only in Sturisoma sp. (Rio Negro).
Bernd Pelster, Chris M. Wood, Adalberto Luis Val   +2 more
wiley   +1 more source

Levels, Determinants and Effects of Polychlorinated Biphenyls and Organochlorine Pesticides in Fish in Lake Victoria, Kenya

Aquaculture Research, Volume 2026, Issue 1, 2026.
Polychlorinated biphenyls (PCBs) and organochlorine pesticides (OCPs) are persistent organic pollutants (POPs) that are highly toxic even at low concentrations and bioaccumulate through aquatic food webs. This study quantified PCBs and OCPs concentrations using GC–MS analysis in 36 pooled samples from 154 Nile tilapia (Oreochromis niloticus) and ...
Joseph Okal, Tobias Odhiambo, Kingdom Simfukwe, Jane Mburu, Austin Mtethiwa, Evalyn Mwihia   +5 more
wiley   +1 more source