Accidental discharges and oil spills are frequent around the world. Petroleum-derived hydrocarbons are considered one of the main pollutants of aquatic ecosystem. The importance of petroleum and refined fuels is notorious ...

Here we compare cell physiology and domoic acid (DA) production for two strains of the diatom Pseudo-nitzschia multiseries originating from two opposite latitudes: Canada (CA) and Brazil (BR). The algae were grown as ...

We examined the morphology of Skeletonema species occurring in coastal waters of southern Brazil, on the basis of LM, SEM, and TEM analyses of six isolated strains and of 13 field samples from the Patos Lagoon estuary and ...

To study the effects of grazing on a natural post-spring phytoplankton community a land-based mesocosm experiment was performed during late spring 1988 (7-18 June). 300-1 polyethylene cylinders, immersed in a flexible pool ...

Data for uranium concentrations in 29 rivers and eight estuaries are presented. The river data expands the existing database on riverine uranium transport to include more smaller watersheds which collectively account for ...

We investigated the distribution of naturally occurring geochemical tracers (222Rn, 223Ra, 224Ra, 226Ra, CH4, d18O, and d2H) in the water column and adjacent groundwater of Mangueira Lagoon as proxies of groundwater ...

This study verified the efficacy of common salt (NaCl) in the food and water as a supportive therapy for Ichthyophthirius multifiliis and growth of silver catfish, Rhamdia quelen, fingerlings. After appearance of the first ...

The aims of this study were to identify the times of anesthetic induction and recovery in silver catfish (Rhamdia quelen) that were exposed to the essential oil of Lippia alba. The efficacy of this oil as an anesthetic ...

The aim of this study was to evaluate the anesthesia induction and recovery times of sub-adult and postlarvae white shrimp (Litopenaeus vannamei) that were treated with eugenol and the essential oils (EOs) from Lippia alba ...

The aim of this study was to determine oxidative stress parameters in the liver, gill and muscle of silver catfish juveniles infected with Ichthyophthirius multifiliis and maintained at pH 5.0 or 7.0 for three days. Juveniles ...

Mangueira Bay is located south of Patos Lagoon. It receives poorly treated official and clandestine household and industrial effluents from the city of Rio Grande. This study analyzes parameters that characterize the water ...

Embryo production was reduced in female grass shrimp exposed to sediments with added coal fly ash and to sediments collected from an estuarine station containing high PAH concentrations due to its proximity to a highway ...

Free-living and attached bacterial population sizes were determined fortnightly from December 1991 to December 1992 in natural and disturbed areas of an Amazonian clear water lake (Batata Lake, Para´, Brazil) impacted by ...

Trophic relations of cephalopods in southern Brazil were investigated from predation on cephalopods by 71 species of potential predators, including two squids, 47 fishes, seven seabirds and 15 marine mammals from shelf, ...

Previous studies in the Amazon Basin and the Upper Pantanal show widespread mercury contamination of fish and water as a result of gold mining, and subsequent volatilization of mercury during the recovery process. A study ...

O desmame, ou seja, a substituição do alimento vivo por alimento inerte é uma etapa crítica para a produção de alevinos de peixes marinhos. Este trabalho teve por objetivo avaliar o efeito do período de co-alimentação ...

The aims of this work were to evaluate the fillet yield and the skin area production of wild-caught (male · female) and indoor-reared male Brazilian flounder Paralichthys orbignyanus. Fillet yield of wild-caught Brazilian ...

The first feeding period is the most critical phase for the production of marine fish larvae. The utilization of n-3 HUFA enrichment on live feed has improved the results for several species during the larviculture. To ...