Results 21 to 30 of about 7,231 (200)

Negative impacts of mining on Neotropical freshwater fishes

, 2021
Mining activities have significantly affected the Neotropical freshwater ichthyofauna, the most diverse in the world. However, no study has systematized knowledge on the subject.
Azevedo-Santos, Valter M. [UNESP], Brito, Marcelo F. G., Olden, Julian D., Simberloff, Daniel, Vitule, Jean R. S., Arcifa, Marlene S., Pelicice, Fernando M., Hughes, Robert M., Agostinho, Angelo A.   +8 more
core   +1 more source

Análise histológica das brí­¢nquias e do fí­­gado de Bryconops caudomaculatus em diferentes concentrações de amônia

Boletim do Instituto de Pesca, 2017
O objetivo foi avaliar os efeitos de diferentes concentrações de amônia não ionizada (zero; 0,15; 0,30; 0,50; 1,00 mg L-1 NH3) na histologia e morfologia das brí­¢nquias e fí­­gado de juvenis de Bryconops caudomaculatus.
Mayara da Cruz RIBEIRO, Sandro Estevan MORON, Jane Mello LOPES   +2 more
doaj   +1 more source

Autonomous detection of neotropical sciaenid fishes [PDF]

Proceedings of Meetings on Acoustics, 2012
Sciaenid passive acoustics are a demonstrated valuable tool for fisheries management. In spite of this, an efficient software tool to detect and identify fish sounds is not currently available. Such tool would be useful for autonomous recognition and array methodologies.
Sebastian Ruiz-Blais, Mario R. Rivera-Chavarria, Arturo Camacho   +2 more
openaire   +1 more source

Crude glycerin in feed for Colossoma macropomum fish: evaluation of histopathological effects on the liver and kidney

Boletim do Instituto de Pesca, 2023
The present study aimed to verify whether the use of crude glycerin in the diet of juvenile C. macropomum could promote histopathological changes in the liver and kidneys.
Eduardo Libanio Reis Santos, Sandro Estevan Moron   +1 more
doaj  

Impacts of small-scale engineering projects on Neotropical freshwater fishes [PDF]

Neotropical Ichthyology
Neotropical freshwater ecosystems harbor some of the world’s most diverse fish communities, playing a fundamental role in ecosystem functionality and providing essential and free services to human societies.
Franco Teixeira de Mello, Carla Simone Pavanelli, José Luis Olivan Birindelli, Ana Cristina Petry, Andréa Bialetzki, Caroline C. Arantes, Fernando Rogério Carvalho, Paulo Santos Pompeu, Fernando Mayer Pelicice   +8 more
doaj   +1 more source

Cross species amplification and characterization of microsatellite markers in Leporinus friderici (Characiformes, Anostomidae) [PDF]

Ciência Rural, 2020
: Leporinus friderici is a migratory neotropical fish with elevated ecological and economic importance in Brazil. Microsatellite markers are highly important in population genetic studies, management, and conservation programs; however, no markers are ...
Caio Felipe da Silva, Diego Galetti Martins, Fernanda Dotti do Prado, Ricardo Utsunomia, Fausto Foresti, Fábio Porto-Foresti   +5 more
doaj   +1 more source

An ecological trait matrix of Neotropical freshwater fishes. [PDF]

Sci Data
The Neotropical freshwater fish (NFF) fauna constitutes the most diverse continental vertebrate assemblage on Earth, with more than 6,345 species distributed across South America, Central America, and the Greater Antilles. These species display a bewildering array of ecophysiological and behavioral traits, or ecotraits, used to exploit habitat and food
Albert JS, Abrahão V, Akin DR, Allen JG, Ândrade M, Arce M, Armbruster JW, Benine R, Bernt MJ, Bichuette ME, Birindelli J, Bragança P, Britto MR, Buckup PA, Burns MD, Calegari BB, Carvalho FG, Carvalho TP, Casatti L, Costa W, Crampton WGR, da Costa Ramos R, da Silva RG, Dagosta F, Egan J, Fernández L, Figueiredo-Filho JM, Fitzgerald D, Fontenelle JP, Haddad EB, Kolmann M, Hrbek T, Langeani F, Lehmann P, Leitão RP, Lima FCT, Loeb MV, Lucena CAS, Lucinda PHF, Lujan NK, Malabarba LR, Matamoros WA, Melo BF, Netto-Ferreira A, Pavanelli CS, Pelicice FM, Pereira EHL, Plasencia Iii X, Rocha M, Roxo F, Anna VS, Shibatta O, Slobodian V, Stange M, Tagliacollo VA, Tan M, Torgersen KT, Winemiller KO, Reis RE.   +58 more
europepmc   +3 more sources

Comparative Chromosome Maps of Neotropical Rodents Necromys lasiurus and Thaptomys nigrita (Cricetidae) Established by ZOO-FISH [PDF]

, 2011
This work presents chromosome homology maps between Mus musculus (MMU) and 2 South American rodent species from the Cricetidae group: Necromys lasiurus (NLA, 2n = 34) and Thaptomys nigrita (TNI, 2n = 52), established by ZOO-FISH using mouse chromosome ...
Müller, Stefan, I.J. Sbalqueiro, Artoni, R. F., Hass, I., S. Müller, R.F. Artoni, Sbalqueiro, I. J., I. Hass   +7 more
core   +1 more source

How does fragmentation by small dams affect stream ichthyofauna in the upper Paraná River basin? [PDF]

Neotropical Ichthyology
Since the seminal publication of the River Continuum Concept (RCC), many studies have shown the importance of habitat and longitudinal changes on fish distribution, including for the Neotropical region.
Gilberto Nepomuceno Salvador, Carlos Bernardo Mascarenhas Alves, Débora Reis de Carvalho, Paulo Santos Pompeu, Cecília Gontijo Leal, Paulo Sérgio Formagio, Robert Mason Hughes, Rosalva Sulzbacher, Rafael Pereira Leitão   +8 more
doaj   +1 more source

DNA metabarcoding of mock communities highlights potential biases when assessing Neotropical fish diversity

, 2023
Despite the increasing popularity of DNA metabarcoding in the assessment of aquatic ecosystems using fish eDNA or ichthyoplankton, challenges have hampered its broader application in the Neotropical freshwaters.
GuimarãesSales, Naiara, Mendes, Izabela Santos, Naiara Guimarães Sales, Daniel Cardoso Carvalho, Hilario, H, Hilário, Heron Oliveira, Izabela Santos Mendes, Heron Oliveira Hilário, Carvalho, Daniel Cardoso   +8 more
core   +1 more source