Metazoan parasites of Hoplias aff. malabaricus, Trachelyopterus galeatus and Schizodon borellii (Osteichthyes) from the Protected Area and its main tributary, Brazil [PDF]
Brazilian Journal of Veterinary Parasitology, 2023 A study of the parasite-host interactions was conducted in the protected area popularly known as the “Refúgio Biológico de Santa Helena” and its tributary, the São Francisco Falso River. For each of the three host species, Schizodon borellii, Hoplias aff.
Ricardo Takemoto +2 more
exaly +6 more sources
Acute and subchronic effects of petroleum on the freshwater fish Hoplias aff. malabaricus [PDF]
Brazilian Journal of Biology, 2022 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
Laura Weber +2 more
exaly +7 more sources
Hoplias aff. malabaricus Bloch, 1794 (Characiformes: Erythrinidae) parasites [PDF]
Arquivos Do Instituto Biologico, 2018 : Aquatic organisms are a subject of great interest because of their nutritional value and their high availability as human food. As a result, an increasing number of studies are being conducted on potentially harmful aquatic organisms such as aquatic ...
Paiva F
exaly +5 more sources
Piscivory by Hoplias aff. malabaricus (Bloch, 1794): a question of prey availability? [PDF]
Acta Limnologica Brasiliensia, 2013 AIM: In order to understand the factors which influence the predatory activity of the Hoplias aff. malabaricus, the present study evaluated feeding habits of this species and its relation to prey availability, in addition to environmental variables ...
Maria Cristina Crispim
exaly +4 more sources
Species of the Hoplias aff malabaricus complex (Characiformes: Erythrinidae): An investigation of coexistence in a Neotropical floodplain [PDF]
Zoologia, 2012 This study assessed the coexistence of three species of thraira present in the Upper Paraná River floodplain, using population structure as an investigation tool. The species were designated as: Hoplias sp.
Evanilde Benedito, Benedito Evanilde
exaly +6 more sources
Spatial and temporal distribution of larvae and juveniles of Hoplias aff. malabaricus (Characiformes, Erythrinidae) in the Upper Paraná River floodplain, Brazil [PDF]
Brazilian Journal of Biology, 2002 Spatial and temporal distribution of larvae and juveniles of trahira, Hoplias aff. malabaricus (Erythrinidae), and their relationship with environmental parameters in the Upper Paraná River floodplain were analyzed. Sampling of larvae and juveniles of H.
Andrea Bialetzki
exaly +8 more sources
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 BiolAbstract 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 +5 more
europepmc +2 more sources
Oxygen consumption from air and water, ammonia and urea-N excretion, and Na<sup>+</sup> fluxes during progressive aquatic hypoxia in Amazonian armoured catfish Pterygoplichthys gibbiceps and Pterygoplichthys pardalis. [PDF]
J Fish BiolAbstract 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.
Pelster B, Wood CM, Val AL.
europepmc +2 more sources
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
Nitrogen excretion and oxygen consumption under severe hypoxia in siluriform fishes from the Amazon. [PDF]
J Fish BiolAbstract 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).
Pelster B, Wood CM, Val AL.
europepmc +2 more sources