Results 51 to 60 of about 1,800 (195)

Novas considerações morfológicas e sistemáticas sobre os Procamallanus brasileiros (Nematoda, Camallanoidea) On Brazilian Procamallanus (Nematoda, Camallanoidea)

open access: yesMemorias do Instituto Oswaldo Cruz, 1976
Mais uma vez os autores apresentam os resultados obtidos, após examinarem 62 amostras de Procamallanus brasileiros parasitas de peixes dulcícolas. Duas novas espécies são propostas: Procamallanus (Spirocamallanus) pexatus e Procamallanus (Procamallanus ...
R. Magalhães Pinto   +3 more
doaj   +1 more source

Organização trófica da assembleia de peixes de uma lagoa costeira subtropical, Santa Catarina, Brasil [PDF]

open access: yes, 2013
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Biológicas, Programa de Pós-graduação em Ecologia, Florianópolis, 2013O presente estudo teve como objetivo investigar a organização trófica da assembleia de peixes da ...
Sticca, Sarah Carvalho
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Larger Fish Upstream: Testing the Drivers of Fish Longitudinal Size Distribution in a Stream

open access: yesFreshwater Biology, Volume 70, Issue 7, July 2025.
ABSTRACT The “larger fish upstream pattern” (LFUP), where fish size increases from river mouths toward headwaters, is widely documented, but the drivers remain unclear. Here, we tested whether LFUP is related to species reproductive strategies or environmental factors (differential growth, predation, competition). Using historical data (1994–1998) from
Pedro Wolf   +2 more
wiley   +1 more source

Long‐Term Effects of Land Use and Cover Change and Dam Rupture on Ichthyofauna in a Neotropical Stream

open access: yesInternational Review of Hydrobiology, Volume 110, Issue 1, Page 5-12, June 2025.
ABSTRACT This study evaluates land use and land cover (LULC) changes and their impacts on the fish community of a neotropical stream in the Sorocaba River basin, Brazil, from 2006 to 2023. The watershed experienced landscape changes over time, categorized into four periods: rural interventions, urban interventions, restorative interventions, and post ...
Nícholas de P. Nicomedes   +8 more
wiley   +1 more source

HYDROCHEMICAL PARAMETERS AND BIOMETRIC DATA OF FISH SPECIES FROM THE BORORÉ, BILLINGS RESERVOIR, SÃO PAULO, BRAZIL

open access: yesBoletim do Instituto de Pesca, 2021
The artisanal fishing is an important activity in Billings Reservoir (São Paulo, Brazil) and there is a paucity of biometric data about the fish in this region.
Fabiana Harumi MIYASAKI   +3 more
doaj   +3 more sources

Bibliografía de los peces de agua dulce de Argentina y Uruguay : Suplemento 1982 [PDF]

open access: yes, 1982
Fil: López, Hugo Luis. División Zoología Vertebrados, Museo de La Plata, UNLPFil: Menni, Roberto Carlos. División Zoología Vertebrados, Museo de La Plata, UNLPFil: Ringuelet, Raúl Adolfo. Instituto de Limnología Dr. Raúl A. Ringuelet (ILPLA); Facultad de
López, Hugo Luis   +2 more
core  

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

open access: yesJournal 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   +7 more
wiley   +1 more source

Fishy Business—Assessing the Efficacy of Active and Passive eDNA to Describe the Fish Assemblage of a River in Southwestern Western Australia to Support Effective Monitoring

open access: yesEnvironmental DNA, Volume 6, Issue 6, November–December 2024.
This study compared three fish sampling methods: traditional fyke netting, and active and passive environmental DNA sampling along a 30 km stretch of the Canning River in Western Australia. The effectiveness of the three different methods of detecting fish was tested with a hierarchical multispecies abundance model fit, with the model used to estimate ...
Emma R. Stevens   +7 more
wiley   +1 more source

Biochemical and ultrastructural changes in the liver of European perch (Perca fluviatilis L.) in response to cyanobacterial bloom in the Gruža reservoir [PDF]

open access: yes, 2011
We investigated the biochemical and ultrastructural changes in the liver of the freshwater fish, European perch (Perca fluviatilis), in response to Aphanizomenon flos-aquae bloom in the Gruža Reservoir, Serbia.
Despotović Svetlana G.   +9 more
core   +4 more sources

Fish, Corumbataí and Jacaré-Pepira river basins, São Paulo State, Brazil [PDF]

open access: yes, 2006
Fish were studied in two river basins (Corumbataí and Jacaré-Pepira) subjected to strong human pressure, in the interior of the State of São Paulo, southeastern Brazil.
Braga, F. M. S., Gomiero, L. M.
core  

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