Three experiments were designed to assess the accumulation and acute toxicity of copper (Cu) in juvenile fat snook Centropomus parallelus. The first experiment was performed to determine the 96-h lethal concentration (LC50) ...

Teleost fish growth may be improved under isosmotic condition. Growth and metabolic performance of juvenile Mugil liza (isosmotic point: 12‰) were evaluated after 40 days in different salinities (0, 6, 12 and 24‰). Tests ...

Despite ubiquitous phenanthrene contamination in aquatic coastal areas, little is known regarding its potential effects on estuarine fishes. The present work evaluated the response of a large suite of oxidative stress- and ...

In freshwater osmoregulating mollusks, Cu can cause toxicity by inducing ionoregulatory disturbances.In mussels, it inhibits the activity of key enzymes involved in Na+uptake and consequently induces ionicand osmotic ...

Silver (Ag), cadmium (Cd), copper (Cu), lead (Pb) and zinc (Zn) concentrations were analyzed in tissues of juvenile green sea turtles (Chelonia mydas) found stranded along the southern Atlantic coast in Brazil. Green sea ...

Quantification of polycyclic aromatic hydrocarbon (PAH) metabolites in fish bile is widely used to evaluate levels of internal PAH contamination in fish, whereas behavioral effects are deemed important to address potential ...

Copper (Cu) accumulation and regulation of key-genes involved in Cu homeostasis were evaluated infreshwater- and saltwater-acclimated guppies Poecilia vivipara. Fish were exposed (96 h) to environ-mentally relevant ...

Uma sequência de três experimentos foi realizada para avaliar o efeito da temperatura na sobrevivência, consumo alimentar e crescimento de pós-larvas de Farfantepenaeus paulensis. Foram avaliadas as faixas de resistência ...

The influence of copper on the ability of the intertidal sea anemone Bunodosoma cangicum to cope with reactive oxygen species generation associated with changes in oxygen availability was evaluated. Sea anemones were kept ...

Biochemical biomarkers were evaluated in the barnacle Balanus improvisus (Crustacea: Cirripedia) sampled from both polluted and reference sites in the Patos Lagoon Estuary, Southern Brazil. During winter, higher glutathione ...

The effects of H2O2 were evaluated in the estuarine worm Laeonereis acuta (Polychaeta, Nereididae) collected at the Patos Lagoon estuary (Southern Brazil) and maintained in the laboratory under controlled salinity (10 psu ...

O sistema de degradação utilizando ferro metálico e peróxido de hidrogênio (reação de Fenton) foi empregado para a degradação do herbicida diurom. Visando obter as melhores condições de degradação, foram otimizados parâmetros ...

A contaminação de ambientes aquáticos por compostos potencialmente tóxicos oriundos de atividades agrícolas é um problema que tem se agravado nos últimos anos. O tebuconazol é um fungicida amplamente usado na agricultura, ...

Esta dissertação teve como objetivo descrever a composição e estrutura da assembleia de Chironomidae durante um período de 10 anos e sua resposta frente a mudança de estados alternativos em um lago raso. Buscou-se também ...

b-Galactosidase is an enzyme that catalyzes the hydrolysis of lactose. It has potential importance due to various applications in the food and dairy industries, involving lactose- reduced ingredients. The properties of ...

Objetivo. Analisar a educação contínua no espectro do processo de trabalho do Programa Saúde da Família no Brasil, através de seus realizadores, o lugar de realização, o modo de desenvolvimento e a finalidade. Metodologia. ...

To identify the occupational characteristics and their implications for the occurrence of voice disorders among teachers in early childhood and primary education. Methodology. A quantitative and exploratory research was ...

Twenty-four teeth of Tursiops truncatus from the collection of the Marine Mammals Laborato ry (FURG-RS) were analysed for their potential as DNA source for population genetic and taxonomic studies. All teeth were submitted ...

A prática de modelos de Educação Ambiental (EA) que buscam uma transformação do sujeito merece entendimento e qualificação de gestores e executores destes programas acerca da subjetividade. O presente ensaio tem por objetivo ...