Results 1 to 10 of about 60 (48)

Here comes the large catfish “jaú” Zungaro jahu (Ihering 1898) (Teleostei, Pimelodidae): a new alarming case of fish introduction in a high-endemism Neotropical ecoregion

Acta Limnologica Brasiliensia, 2022
: Aim Non-native fish species have been closely related to serious damage to aquatic biodiversity due to their negative effects on native fauna. We aim to report the first and alarming occurrence of the non-native catfish “jaú” Zungaro jahu in the ...
Augusto Frota, Vinícius Abilhoa, Matheus Oiveira Freitas, Rodrigo Lira Meyer, Eduardo Rios Gonçalves, Filipe Manoel Azevedo, Éder André Gubiani, Weferson Júnio da Graça   +7 more
doaj   +5 more sources

Chromobacterium violaceum (Schröter 1872) isolated from the aquatic environment associated with the fish culture of Jaú, Zungaro jahu (Ihering, 1898) (Siluriformes, Pimelodidae)

Bioscience Journal, 2017
The jau, Zungaro jahu (Ihering, 1898) is an endangered species, rheophilic, reaching 1.5 m and more than 100 kg. During a work of microbiological monitoring of water quality, in the cultivation of Zungaro jahu, microorganisms that were isolated, were ...
Renato Ventresqui de Oliveira, Natália Conceição, Douglas de Castro Ribeiro, Fagner de Souza, Maria das Graças Reis, Marcelo Mattos Pedreira, Paulo Roberto da Silva, Afonso Pelli   +7 more
doaj   +6 more sources

Induced spawning and early ontogeny in hatchery-reared catfish Zungaro jahu (Siluriformes: Pimelodidae) [PDF]

Neotropical Ichthyology, 2012
Hatchery-kept catfish jahus Zungaro jahu (Ihering, 1898) were induced to spawn with carp pituitary extract. The telolecithal eggs were round (1.6 ± 0.1 mm in diameter), demersal, free, and covered with a 0.4 mm-thick jelly coat.
Lorena B. Nogueira, Pedro G. Azevedo, Mônica R. Canelhas, Alessandra G. Bedore, João M. Lopes, Hugo P. Godinho   +5 more
doaj   +3 more sources

Prevalência, distribuição geográfica e sazonal de protozoários e mixozoários parasitos de jaú (Zungaro jahu) no Pantanal Matogrossense

Pesquisa Veterinaria Brasileira, 2012
Estudo realizado no Pantanal Matogrossense, avaliou a prevalência, a distribuição geográfica e sazonal de protozoários e mixozoários parasitos de jaú (Zungaro jahu).
Edson Aparecido Adriano, Antonio Maia, Marcia R M Silva   +2 more
exaly   +3 more sources

Dynamics of fish larvae recruitment in the hydrographic basin of the Paraguay River in western Brazil [PDF]

Neotropical Ichthyology, 2023
The conservation of fish assemblages depends on the longitudinal and lateral connectivity between riverine habitats, in particular during the breeding season and the initial development.
Tatiane Pires de Sousa, Andréa Bialetzki, Lucia Aparecida de Fatima Mateus   +2 more
doaj   +1 more source

Low‐Effort eDNA Sampling Reveals Fish Community Patterns in a Neotropical River Basin

Environmental DNA, Volume 7, Issue 4, July–August 2025.
Low eDNA sampling effort (< 10 sample sites) using a portable on‐site kit with syringe filters and a modest water volume (< 500 mL per site) provided a rapid and robust snapshot of fish biodiversity. Environmental DNA based species richness increases along the upstream‐downstream gradient showing a significant negative correlation with river elevation ...
Daniel Cardoso Carvalho, Heron Oliveira Hilário, Igor Henrique Nascimento, Guilherme Costa Berger, Paulo Santos Pompeu   +4 more
wiley   +1 more source

Length‒Weight and Length‒Length Relationships of Freshwater Fish Species Caught by Professional Fishermen in the Itaipu Reservoir, Brazil

Journal of Applied Ichthyology, Volume 2025, Issue 1, 2025.
Length‒weight relationships (LWRs) and length‒length relationships (LLRs) were estimated for 63 and 58 freshwater fish species, respectively, captured in the Itaipu Reservoir, Paraná River Basin, Paraná State, Brazil. Sampling was carried out from March 1987 to July 2024 at 63 professional fishing sites within the reservoir’s area of influence ...
Éder André Gubiani, Luiz Guilherme dos Santos Ribas, Anderson Luís Maciel, Geuza Cantanhêde, Laís Thayse Meier, Pitágoras Augusto Piana, Caroline Henn, Yintao Jia   +7 more
wiley   +1 more source

Radiotelemetry of a female jaú, Zungaro jahu (Ihering, 1898) (Siluriformes: Pimelodidae), passed upstream of Funil Dam, rio Grande, Brazil

Neotropical Ichthyology
Jaú, Zungaro jahu (Ihering, 1898), a large migratory catfish endemic to the rio da Prata basin, has a fragile conservation status and its ecology is poorly known.
Carlos Bernardo Mascarenhas Alves, Luiz Gustavo Martins da Silva, Alexandre Lima Godinho   +2 more
doaj   +1 more source

The economic displacement of thousands of fishers in the Pantanal, Brazil: A telling story of small‐scale fisheries marginalization worldwide.

Fish and Fisheries, Volume 25, Issue 6, Page 951-958, November 2024.
Abstract A new policy in the Pantanal wetland, Brazil, aims to economically displace thousands of artisanal fishers from one‐third of the region. The legislation disregards several FAO Voluntary Guidelines for Securing Sustainability in Small‐Scale Fisheries' guiding principles (SSF guidelines). Considering that 2024 marks the 10th anniversary of these
Adriana Maria Espinoza Fernando, Douglas Alves Lopes, Lúcia Mateus, Jerry Penha, Yzel Rondon Súarez, Agostinho Carlos Catella, André Valle Nunes, Neusa Arenhart, Rafael Morais Chiaravalloti   +8 more
wiley   +1 more source

Análise da suscetibilidade de espécies da ictiofauna da região hidrográfica do rio Paraguai aos incêndios de 2020

Biodiversidade Brasileira
A região hidrográfica do rio Paraguai abriga a maior superfície continental inundável do planeta, o Pantanal brasileiro. Seus pulsos de inundação influenciam os ciclos da biodiversidade regional, tendo elevada importância para a manutenção da abundância ...
Sheila Rancura, Cindy Emanuelly Brito , Davidson Gomes Nogueira, Carla Natacha Marcolino Polaz, Izabel Correa Boock de Garcia   +4 more
doaj   +1 more source