scholarly journals LARVA DE TERCER ESTADIO DE DIOCTOPHYME RENALE (GOEZE, 1782) (NEMATODA: ENOPLIDA) EN HOPLOSTERNUM LITTORALE (HANCOCK, 1828) (SILURIFORMES: CALLICHTHYIDAE) IN SUR DEL BRASIL

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
C. S. Mascarenhas ◽  
A. B. D. Henzel ◽  
F. Corrêa ◽  
R. B. Robaldo ◽  
G. Müller
Keyword(s):  
Hoplosternum Littorale

Dioctophyme renale (Goeze, 1782) ocurre en varias especies de carnívoros silvestres (cánidos y mustélidos) y también en perros domésticos. Oligoquetos acuáticos actúan como hospedadores, ranas y peces como hospedadores paraténicos. Este trabajo tiene como objetivo registrar larvas de tercer estadio de Dioctophyme renale en Hoplosternum littorale (Hancock, 1828) (Callichthyidae), en el sur de Brasil. Cuatro hospedadores recogidos de los canales urbanos del sur de Brasil fueron examinados. Los nematodos fueron fijados en AFA, conservados en el 70 ° GL alcohol glicerinado, y aclarados en lactofenol de Amann. Todos los hospedadores estaban infectados con larvas de tercer estadio de D. renale, con una larva por quiste, encontrados en la cavidad del cuerpo y en la serosa del estómago. La ocurrencia de larvas de tercer estadio de D. renale en Hoplosternum littorale sugiere que este pez tiene potencial como hospedador paraténico.

Biomarkers of exposure and effect in the armoured catfish Hoplosternum littorale during a rice production cycle

2021 ◽  
pp. 117356
Author(s):  
Noelia Fantón ◽  
Jimena Cazenave ◽  
Melina P. Michlig ◽  
María R. Repetti ◽  
Andrea Rossi
Keyword(s):  
Rice Production ◽  
Production Cycle ◽  
Biomarkers Of Exposure ◽  
Armoured Catfish ◽  
Hoplosternum Littorale

Remarkable genetic homogeneity supports a single widespread species of Hoplosternum littorale (Siluriformes, Callichthyidae) in South America

2017 ◽  
Vol 10 (3) ◽  
pp. 563-569 ◽  
Author(s):  
Thiago E. Parente ◽  
Daniel A. Moreira ◽  
Paulo A. Buckup ◽  
Paula C. C. de Andrade ◽  
Maithê G. P. Magalhães ◽  
...  
Keyword(s):  
South America ◽  
Genetic Homogeneity ◽  
Widespread Species ◽  
Hoplosternum Littorale

Characterization of brain acetylcholinesterase of bentonic fish Hoplosternum littorale: Perspectives of application in pesticides and metal ions biomonitoring

2018 ◽  
Vol 205 ◽  
pp. 213-226 ◽  
Author(s):  
Marlyete Chagas Araújo ◽  
Caio Rodrigo Dias Assis ◽  
Kaline Catiely Campos Silva ◽  
Kelma Sirleide Souza ◽  
Rafael Souto Azevedo ◽  
...  
Keyword(s):  
Metal Ions ◽  
Brain Acetylcholinesterase ◽  
Hoplosternum Littorale

scholarly journals A pesca do tamoatá Hoplosternum littorale (Hancock, 1828) (Siluriformes: Callichthyidae) na ilha de Marajó

2008 ◽  
Vol 3 (3) ◽  
pp. 359-372 ◽  
Author(s):  
Adna Almeida de Albuquerque ◽  
Ronaldo Borges Barthem
Keyword(s):  
Santa Cruz ◽  
Hoplosternum Littorale

Hoplosternum littorale (Hancock, 1828) (Siluriformes, Callichthyidae) é um peixe de médio porte conhecido na Amazônia brasileira como tamoatá. Apresenta respiração acessória, o que permite ocupar as extensas áreas pantanosas da foz dos rios Amazonas e Orinoco. O tamoatá é o principal recurso pesqueiro da ilha de Marajó, sendo capturado principalmente nos campos alagados da bacia do rio Arari, no município de Santa Cruz do Arari (PA). Seu desembarque representa 6% do total no porto do Ver-o-Peso, em Belém (PA), o principal da Amazônia oriental. A pesca do tamoatá é marcadamente sazonal, ocorrendo na estação seca. De julho a agosto, é mais intensa no rio e lago Arari e de outubro a novembro, nos poços das fazendas, que são os últimos a secarem na região. A pesca é feita por pescadores locais, que vendem sua produção para as geleiras. Estas são embarcações de madeira, com urnas de gelo que levam a produção para ser comercializada nos principais portos urbanos, em especial o do Ver-o-Peso. A pesca é aqui descrita com base em observações de campo e entrevistas estruturadas com pescadores comerciais e fazendeiros da região. A frota de geleiras que desembarca o tamoatá em Belém é composta por 415 embarcações com capacidade de urna de até 27 t. As pescarias são realizadas, basicamente, por redes de emalhar de monofilamento e de cerco de multifilamento.

Exposure to waterborne copper and high temperature induces the formation of reactive oxygen species and causes mortality in the Amazonian fish Hoplosternum littorale

Hydrobiologia ◽  
2016 ◽  
Vol 789 (1) ◽  
pp. 157-166 ◽  
Author(s):  
Susana Braz-Mota ◽  
Luciana Mara Lopes Fé ◽  
Frederico Augusto Cariello Delunardo ◽  
Helen Sadauskas-Henrique ◽  
Vera Maria Fonseca de Almeida-Val ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
High Temperature ◽  
Reactive Oxygen ◽  
Oxygen Species ◽  
Amazonian Fish ◽  
Hoplosternum Littorale

scholarly journals Calcium fluxes in Hoplosternum littorale (tamoatá) exposed to different types of Amazonian waters

2009 ◽  
Vol 7 (3) ◽  
pp. 465-470 ◽  
Author(s):  
Bernardo Baldisserotto ◽  
Carlos Eduardo Copatti ◽  
Levy Carvalho Gomes ◽  
Edsandra Campos Chagas ◽  
Richard Philip Brinn ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Water Transfer ◽  
Well Water ◽  
Acidic Ph ◽  
Clear Water ◽  
Black Water ◽  
Neutral Ph ◽  
Different Types ◽  
White Water ◽  
Hoplosternum Littorale

Fishes that live in the Amazonian environment may be exposed to several kinds of waters: "black waters", containing high dissolved organic carbon and acidic pH, "white waters", with ten fold higher Ca2+ concentrations than black waters and neutral pH, and "clear waters", with two fold higher Ca2+ concentrations than black waters and also neutral pH. Therefore, the aim of the present study was to analyze Ca2+ fluxes in the facultative air-breather Hoplosternum littorale (tamoatá) exposed to different Amazonian waters. Fishes were acclimated in well water (similar to clear water) and later placed in individual chambers for Ca2+ fluxes measurements. After 4 h, water from the chambers was replaced by a different type of water. Transfer of tamoatás to ion-poor black or acidic black water resulted in net Ca2+ loss only in the first 2 h of experiment. However, transfer from black or acidic black water to white water led to only net Ca2+ influxes. The results obtained allowed us to conclude that transfer of tamoatás to ion-poor waters (black and acidic black water) led to transient net Ca2+ loss, while the amount of Ca2+ in the ion-rich white water seems adequate to prevent Ca2+ loss after transfer. Therefore, transfer of tamoatás between these Amazonian waters does not seem to result in serious Ca2+ disturbance.

scholarly journals Food ecology and presence of microplastic in the stomach content of neotropical fish in an urban river of the upper Paraná River Basin

2020 ◽  
Vol 15 (4) ◽  
pp. 1
Author(s):  
Cristian Wesley de Souza Oliveira ◽  
Cláudia Dos Santos Corrêa ◽  
Welber Senteio Smith
Keyword(s):  
Stomach Content ◽  
Stomach Content Analysis ◽  
Urban River ◽  
Marine Biota ◽  
Neotropical Fish ◽  
Food Items ◽  
Astyanax Fasciatus ◽  
Upper Paraná River ◽  
Food Consumed ◽  
Hoplosternum Littorale

Plastic is a useful material; but along with its benefits also come several disadvantages. One of these is the consequences of the improper discarding of plastic in the environment and its eventual fragmentation into microplastics. Plastic can reach rivers and affect their biota as microparticles from its degradation. The entry of plastic into the food chain occurs by the consumption of fish or other organisms. Furthermore, persistent organic pollutants can accumulate, and the consumption of materials containing plastic pollutants can cause several physiological problems in animals. Such pollutants can reach man when water or fish is consumed. There are numerous studies in the marine environment that show that microplastics significantly interfere with marine biota; but there are relatively few studies addressing this topic in freshwater environments. This work characterized the diet of the most abundant fish species in an urban river of the Upper Paraná Brazil Watershed, investigating the occurrence of microplastic. As much as the studied river suffers from urban river syndrome, a wide variety of food consumed by fish was found. The stomach content of 220 individuals belonging to fourteen species was analyzed. In the stomach content analysis, 16 types of food items were found, most of them autochthonous. The species analyzed were grouped into four trophic categories, with iliophage as dominant one. The presence of microplastics was found in 2% of the studied individuals, two individuals of the species Rhamdia quelen, one specimen of Hoplosternum littorale and one specimen of Astyanax fasciatus.

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