Results 51 to 60 of about 3,343 (212)

Unprotected Waters: When Protection Fails In Freshwater

Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 36, Issue 3, March 2026.
ABSTRACT Invasive species are a major driver of biodiversity loss in protected areas (PAs), yet their impacts in aquatic environments are less well documented. This study investigated the occurrence and distribution of nonnative freshwater fish in federal PAs in Brazil.
Aymar Orlandi Neto, Éder André Gubiani, Igor Paiva Ramos   +2 more
wiley   +1 more source

Habitat Preferences and Short‐Term Dynamics of Alien Fishes Revealed by Environmental DNA in River Floodplains

Environmental DNA, Volume 8, Issue 2, March/April 2026.
Based on eDNA metabarcoding, the study revealed habitat‐use patterns and the temporal dynamics of non‐native fish species in two Danubian floodplains. Hydrological connectivity played a major role in shaping alien fish community assembly. ABSTRACT Floodplains are among the most diverse freshwater ecosystems, yet they are increasingly threatened by ...
István Czeglédi, Andrea Funk, Didier Pont, Thomas Hein, Paul Meulenbroek, Bálint Preiszner, Alice Valentini, Tibor Erős   +7 more
wiley   +1 more source

Alimentacao do tucunare Cichla sp. (Pisces, cichlidae) um peixe introduzido no Pantanal, Brasil. [PDF]

, 2015
Com o objetivo de estudar a alimentacao do tucunare (Cichla sp.) no Pantanal, foram realizadas cinco coletas entre novembro/1992 e junho/1994. Foram capturados 425 especimes, destes 207 apresentaram conteudo estomacal.
CATELLA, A. C., NASCIMENTO, F. L., SUAREZ, I. R.   +2 more
core   +1 more source

Cannibalism as the main feeding behaviour of tucunares introduced in Southeast Brazil

Brazilian Journal of Biology
Individuals of its own genus were the main food item of two species of tucunares (Cichla cf. ocellaris and Cichla monoculus) introduced into the Volta Grande Reservoir.
L. M. Gomiero, F. M. S. Braga
doaj   +1 more source

How to Fish With Respect: A Transformation of Human‐Fish Relations in Riverside Amazonia

American Anthropologist, Volume 128, Issue 1, Page 63-72, March 2026.
ABSTRACT Riverside inhabitants of the Middle Xingu River Basin, in the Brazilian Amazonia, frequently say that it is important to respect animals and the forest spirits who protect them. In recent decades, however, the development of an iced fish industry in the region has changed what respect means and how it is expressed when it comes to fishing ...
Vinicius de Aguiar Furuie
wiley   +1 more source

Austrodiplostomum compactum (Lutz, 1928) (Digenea, Diplostomidae) in the eyes of fishes from Paraná river, Brazil - doi: 10.4025/actascibiolsci.v34i2.9337

Acta Scientiarum: Biological Sciences, 2011
Parasitological indexes of Austrodiplostomum compactum (Digenea, Diplostomidae) in fishes from the Paraná River, Presidente Epitácio region, state of São Paulo, Brazil, and their relationship with climate and water quality are evaluated.
Rosemeire de Souza Santos, Natalia Marchiori, Vamilton Alvares Santarem, Haroldo Kazuyuki Takahashi, José Luis Pedreira Mourino, Maurício Laterça Martins   +5 more
doaj   +3 more sources

Gape size influences seasonal patterns of piscivore diets in three Neotropical rivers

Neotropical Ichthyology
We examined diets of four piscivores, two in the order Perciformes (Cichla temensis and C. orinocensis) and two in the order Characiformes (Boulengerella cuvieri and B.
Carmen G. Montaña, Craig A. Layman, Kirk O. Winemiller   +2 more
doaj   +1 more source

Weight-length relationship, condition factor and blood parameters of farmed Cichla temensis Humboldt, 1821 (Cichlidae) in central Amazon. [PDF]

, 2017
Farming of native carnivore fish species has drawn attention due to their promising use in aquaculture. Among these species, tucunaré of the genus Cichla stand out, them being of high economical interest for sport fishing and Amazon's industry of ...
AFFONSO, E. G., AMARAL, K. D. S., MONTEIRO, A. M. de C., TAVARES-DIAS, M.   +3 more
core  

Development of a Duplex Digital PCR and Validation on eDNA Water Samples for Monitoring of the Asian Swamp Eel (Monopterus albus/Javanensis) and Bullseye Snakehead (Channa aurolineata/Marulius) in Florida, USA, Freshwater Ecosystems

Ecology and Evolution, Volume 16, Issue 2, February 2026.
The Asian swamp eel and bullseye snakehead are two invasive organisms in Florida of ecological concern. In this study, a multiplex digital polymerase chain reaction (dPCR) assay is developed, optimized, and validated on water samples for environmental DNA (eDNA) analysis and monitoring. ABSTRACT Invasive species are a significant threat to a variety of
Melody Bloch, Eric Suarez, Melissa A. Miller, Sergio A. Balaguera‐Reina, Cynthia A. Fussell Persaud, Kevin A. Olejniczak, Ericka E. Helmick, Frank J. Mazzotti, Brian W. Bahder   +8 more
wiley   +1 more source

Peacock bass mortality associated with catch-and-release sport fishing in the Negro River, Amazonas State, Brazil [PDF]

Acta Amazonica, 2014
Sport fishing for peacock bass Cichla spp. in the Brazilian Amazon has increased in popularity and attracts anglers who generate significant economic benefits in rural regions.
Mario J. F. Thomé-Souza, Michael J. Maceina, Bruce R. Forsberg, Bruce G. Marshall, Álvaro L. Carvalho   +4 more
doaj   +2 more sources