Copepods (Acartia tonsa) were exposed (48 h) to waterborne, diet-borne (non-Cu-equilibrated and Cu-equilibrated food), and waterborne plus diet-borne Cu in either the absence or the presence of food (diatom Thalassiosira ...

Cobia Rachycentron canadum is a fast growing fish with world-wide potential for aquaculture, and has been considered for rearing in recirculating aquaculture systems (RAS). Nitrate is considered the least toxic nitrogenous ...

Microcystins (MCs) are toxins produced by cyanobacteria (blue-green algae), primarily Microcystis aeruginosa, forming water blooms worldwide. When an organism is exposed to environmental perturbations, alterations in normal ...

Fish are potentially submitted to water acidification when reared in recirculating aquaculture systems. This study evaluated the responses of juvenile cobia Rachycentron canadum after acute exposure to acid water. ...

This study evaluated the median lethal concentra-tion values (LC50) and the histopathological effectsof un-ionized ammonia (NH3--N) on juvenile mar-oon clownfishPremnas biaculeatus. After 96 h ofexposure to different ...

Nitrogenous compounds can be toxic to aquatic animals especially when they are reared at high stocking densities. Cobia (Rachycentron canadum) is a fast growing fish currently reared in cages, but with expanding production ...

O cromo não possui essenciabilidade comprovada na nutrição das plantas, porém é requerido pelos microrganismos em alguns processos metabólicos específicos. Nesse sentido, elaborou-se o presente trabalho com o objetivo de ...

Este trabalho teve por objetivo o estudo as lagoas costeiras do litoral norte do Rio Grande do Sul (RS) e seus tributários quanto ao transporte de água doce de origem subterrânea para a plataforma continental, via estuário ...

Sequential infrared satellitebeen usedbetween November images 1995 and August 1996 have to derive sea sur- face advective velocities in the southwestern Atlantic Ocean using the Maximum Cross-Correlation (MCC) technique. ...

The coastal demersal sciaenid Macrodon atricauda (Günther, 1880), formerly M. ancylodon (Bloch and Schneider, 1801) was sampled for ageing during four periods (1977–1979, 1984–1986, 1997–1998 and (2006–2009) in commercial ...

Age and length data of 291 franciscana dolphins (Pontoporia blainvillei)incidentally captured on the coast of Rio Grande do Sul State (RS), southern Brazil, were used to fit growth curves using Gompertz and Von Bertalanffy ...

Southwestern Atlantic wreckfish Polyprion americanus (27◦56 S and 34◦52 S) were aged using transverse thin sections of the sagittae otoliths of 390 individuals (44–155 cm TL, total length). The index of average percentage ...

Age and growth studies for the scalloped hammerhead shark, Sphyrna lewini (Griffith and Smith, 1834) caught along the southern Brazilian coast, were based on ring measurements of vertebrae sections of 115 males, 116 females ...

The dusky grouper, Mycteroperca marginata, is an important commercial marine fish that is currently considered an endangered species worldwide and listed as overexploited in Brazil. Although its reproductive biology has ...

Exemplares de Illex argentinus capturados pela pesca comercial ao longo do sul do Brasil foram amostrados mensalmente de Março de 2007 a Janeiro de 2008, para comprimento dorsal do manto (ML), sexo, idade e maturidade e ...

A agregação pode sofrer alterações permanentes ou temporárias com variações cíclicas provocadas por práticas de manejo do solo e pelo crescimento das plantas. O estudo avaliou a variação temporal e espacial da estabilidade ...

Jaccart s similarity coeficiente applied to presente/absence data was calculated using NTSY-S software for cluster analysis, relationship among 32 brachyurans species and season allty, depth, bottom salinity and temperature ...

O monitoramento da posição das frentes das geleiras por análises automáticas de dados de sensores satelitais normalmente resulta em subestimação das línguas das geleiras. Razões de banda (e.g., infravermelho próximo para ...