Results 71 to 80 of about 4,670 (210)
Organização trófica da assembleia de peixes de uma lagoa costeira subtropical, Santa Catarina, Brasil [PDF]
, 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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Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 35, Issue 12, December 2025.ABSTRACT Understanding the impact of human activities on fish communities is critical for the effective conservation of Amazonian ecosystems. In this study, we sampled environmental DNA (eDNA) from 17 sites (lakes and rivers) in two Peruvian national reserves, Pacaya‐Samiria and Allpahuayo‐Mishana, using a metabarcoding approach with four genetic ...
B. Prat +6 more
wiley +1 more source
Seasonal Forest Resources Support Fish Biomass in Floodplain Lakes of an Amazonian Tributary
Freshwater Biology, Volume 70, Issue 11, November 2025.ABSTRACT The Flood Pulse Concept is a foundational ecological theory that emphasizes the critical role of lateral connectivity between a river channel and its floodplain. Many tropical rivers inundate the surrounding floodplain in the flood stage, thereby receiving large amounts of terrestrial organic matter that can be decomposed by microbes and ...
Timothy D. Jardine +7 more
wiley +1 more source
Ciência Rural, 2000 Several studies have suggested that the caudal neurosecretory system could act on fish reproduction. The aim of this study was to compare the effect of urophysial extract (UE) and carp pituitary homogenate (CPH) on the induction of spawning in Hoplias ...
Everton Rodolfo Behr +4 more
doaj +1 more source
CLOFFAR - update 3 - supplement to Checklist of the Freshwater Fishes of Argentina [PDF]
, 2017 In May 2016 we have published the second update to CLOFFAR and in these few months a total of 22 changes have summed up. The total number of fishes known from the freshwaters of Argentina has increased to 538, caused by one new Hoplias and 13 first ...
Koerber, Stefan +2 more
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Aquaculture and Fisheries, 2019 We describe key production-related traits of trahira (Hoplias malabaricus), an aquaculture candidate species, in a semi-intensive fish farming system. We quantified growth from hatch through grow-out at two stocking densities and evaluated fillet protein, lipids and fatty-acid content.
Marcos Daniel Renó Faria +6 more
openaire +2 more sources
The Role of Fish in Nutrient Recycling Across a Conservation Gradient in Neotropical Streams
Freshwater Biology, Volume 70, Issue 10, October 2025.ABSTRACT Fish play a crucial role in nutrient recycling within various aquatic ecosystems, but how their contribution varies across streams with different levels of disturbance remains poorly understood. In our study, we investigated the role of fish assemblage in nutrient cycling within eight Neotropical streams characterised by varying degrees of ...
Ronny José de Morais +3 more
wiley +1 more source
Zoologia (Curitiba), 2012 This study assessed the coexistence of three species of thraira present in the Upper Paraná River floodplain, using population structure as an investigation tool. The species were designated as: Hoplias sp.
Marília Hauser, Evanilde Benedito
doaj +1 more source
Estudo das propriedades funcionais da hemoglobina de Hoplias malabaricus e Hoplerythrinus unitaeniatus [PDF]
Acta Amazonica, 1978 Resumo Hemolisados de Hoplias malabaricus e Hoplerythrinus unitaeniatus apresentaram padrões pouco nítidos de hemoglobina com 3 a 4 bandas, respectivamente, por eletroforesis alcalina em gel de disco.
Austen Riggs +3 more
doaj +1 more source
Performance of eDNA Filtration Methods for Monitoring Fish Diversity in a Hyper‐Tidal Estuary
Environmental DNA, Volume 7, Issue 5, September–October 2025.This study evaluates four eDNA filtering methods, three manual filters (0.45, 1.2, and 5 μm) and a passive method, the metaprobe, across a salinity gradient in a hyper‐tidal estuarine ecosystem. Results show that the 0.45 μm filter detected the highest species richness (39 species), followed by the metaprobe (35 species), and the 1.2 μm (34 species ...
Jake M. Jackman +7 more
wiley +1 more source