Results: 51

Produtos de pescado elaborados com resíduos de arrasto: análise físico-química, microbiológica e toxicológica

Na pesca de arrasto, são inúmeras as espécies de peixe capturadas acidentalmente, compostas, em sua maioria, de espécimes de pequeno tamanho e baixo valor comercial, os quais recebem o nome de rejeito de pesca. O presente trabalho teve como objetivo o desenvolvimento de dois produtos, almôndega e qu...

Fish movement in an Atlantic Forest stream

Neotrop. ichthyol; 16 (1), 2018
Given the importance of fish movement to the dynamics and maintenance of stream dwelling fish communities from the Atlantic Forest, we analysed patterns of fish movement in a coastal stream from Southeastern Brazil, using mark-recapture technique. Displacement distance of each species were presented and ...

Fish diversity in the cascade of reservoirs along the Paranapanema River, southeast Brazil

Neotrop. ichthyol; 16 (2), 2018
The Paranapanema River is a major tributary of the upper Paraná river basin. Eleven hydropower dams regulate its main course, but no study has investigated fish diversity in these impoundments at the basin-scale. The present study investigated spatial patterns of richness, composition, and abundance of ...

Physical habitat simulation for small-sized characid fish species from tropical rivers in Brazil

Neotrop. ichthyol; 16 (4), 2018
Physical habitat simulation (PHABSIM) is an important step of the instream flow incremental methodology (IFIM), which is applied to establish environmental flow regimes. This study applied the PHABSIM in two reaches of the Velhas river basin, whose long-term discharges are similar but are under different...

Estimating population parameters of longsnout seahorses, Hippocampus reidi (Teleostei: Syngnathidae) through mark-recapture

Neotrop. ichthyol; 15 (4), 2017
Estimating population parameters is essential for understanding the ecology of species, which ultimately helps to assess their conservation status. The seahorse Hippocampus reidi is directly exposed to anthropogenic threats along the Brazilian coast, but the species still figures as Data Deficient (DD) a...

Effects of reservoirs water level variations on fish recruitment

Neotrop. ichthyol; 15 (3), 2017
The construction of hydroelectric power plants has many social and environmental impacts. Among them, the impacts on fish communities, which habitats are drastically modified by dams, with consequences across the ecosystem. This study aimed to assess the influence of water level (WL) variations in the re...

Rocinela signata (Isopoda: Aegidae) parasitizing the gills of the spotted goatfish Pseudupeneus maculatus (Actinopterygii: Mullidae) in Northeastern Brazil

An. acad. bras. ciênc; 89 (3,supl), 2017
ABSTRACT Parasitic isopods of fishes usually show wide distribution and low host specificity. This study investigated the occurrence of gill parasites in 120 specimens of spotted goatfish Pseudupeneus maculatus, marine fish of great economic importance for fishery community. The fish were captured monthl...

Gill parasites of fish from two estuaries in northeastern Brazil: new hosts and geographical records

An. acad. bras. ciênc; 89 (3,supl), 2017
ABSTRACT Parasites are important components of communities and constitute great part of the biological diversity found in ecosystems, providing valuable information about their hosts and the environment in which they live. However, despite its importance, parasitic diversity is still not well known in so...

Variación espacio-temporal de la ictiofauna del Parque marino Xel-Há, Caribe mexicano y su relación con parámetros fisicoquímicos

Rev. biol. trop; 64 (4), 2016
Resumen:Xel-Há es un parque ecoturístico marino donde no se permite ningún tipo de extracción de flora o fauna. Una de las principales atracciones turísticas en este parque son los peces de arrecife, no existiendo trabajos publicados sobre la comunidad íctica para este sitio. En este estudio se ana...

Effects of a small natural barrier on the spatial distribution of the fish assemblage in the Verde River, Upper Paraná River Basin,Brazil

Braz. j. biol; 76 (4), 2016
Abstract Geographical barriers influence species distribution and play an important role in the segregation of fish assemblages. The present study aims to test the influence of a small natural barrier on the spatial distribution of fish species in the Verde River, Upper Paraná River Basin, Brazil, consi...