Estudo transversal que objetivou identificar a prevalência de abortos espontâneos e fatores associados em mulheres em idade reprodutiva residentes nas proximidades de um parque industrial. A amostra foi de 285 mulheres ...

A fauna entomológica na restinga da Ilha dos Marinheiros, no estuário da laguna Lagoa dos Patos, foi inventariada entre setembro de 2003 a agosto de 2004, utilizando-se a armadilha malaise. Foram coletados 21.449 insetos ...

Pollution is a world problem with immeasurable consequences. Heavy metal compounds are frequently found as components of anthropogenic pollution. Here we evaluated the effects of the treatment with cadmium acetate, lead ...

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) ...

To broaden the understanding of physiological responses of tropical fish to environmental stressors, the effects of nitrite on haematological parameters and plasma and red blood cell ion regulation were studied in two ...

On the basis of these facts about freshwater fish and invertebrates: (i) the Na+ turnover is a physiological process associated with the gill membranes; (ii) the key mechanism of acute silver toxicity consists of reduction ...

The euryhaline copepod Acartia tonsa was exposed to silver (AgNO(3)) in either the absence or the presence of food (diatom Thalassiosira weissflogii; 2 x 10(4) cells/ml). Standard static-renewal toxicity tests that included ...

In vivo and in vitro studies were performed to evaluate acute toxicity, organ-specific distribution, and tissue accumulation of copper in Callinectes sapidus acclimated to two different experimental salinities (2 and 30 ...

Muito se discute sobre o que realmente deve ser feito para gerar um amanhã mais digno e igualitário, principalmente, dentro das universidades. Nesse sentido, o que estamos propondo neste artigo é a análise sobre o ...

We present data on age composition and sexual size dimorphism (SSD) of albatrosses, petrels and shearwaters in southern Brazil for 301 birds of 14 species captured live at sea. The pelagic community of seabirds off Brazil ...

The foraging and diving behavior of the Great Grebe (Podicephorus major) was studied in southern Brazil, from June to October 2005. A total of 547 dives performed by adult birds and 578 dives of juveniles were recorded. ...

Aggregate formation in axenic and microbial co-inoculated batch cultures of Aulacoseira granulata (Bacillariophyceae). Aggregate formation involving diatoms is a well-known process, especially in the marine environment. ...

Contextualização: A literatura demonstra o efeito benéfico da terapia ultra-sônica de baixa intensidade sobre o processo de cicatrização de vários tecidos. Objetivo: Avaliar o efeito do ultra-som contínuo (USC) sobre a ...

O imposex é um excelente marcador da contaminação marinha por compostos orgânicos de estanho (COEs). Esse fenômeno consiste no surgimento de caracteres sexuais masculinos mensuráveis, em fêmeas de neogastrópodes. Um ...

The effects of aluminum on plasma ion, lipid, protein and steroid hormone concentration were evaluated in Oreochromis niloticus broodstock females. Lipid and protein concentrations from the gonads and liver were also ...

Neste trabalho investigamos como a Educação Ambiental se insere no currículo do curso de Pedagogia da Unicamp e como esse campo de conhecimento se expressa no discurso de docentes desse curso. Por meio da análise das ementas ...

The effect of Ab25–35 peptide, in its fibrillar and non-fibrillar forms, on ganglioside expression in organotypic hippocampal slice cultures was investigated. Gangliosides were endogenously labeled with D-[1-C14] galactose ...

A tropical strain of Cryptomonas obovata Skuja, isolated from a shallow oxbow lake, released a sulfated fucoserich polysaccharide. The polysaccharide is composed mainly of fucose (42%), N-acetyl-galactosamine (26%) and ...

Cytogenetic studies were carried out in the fish, Hoplias malabaricus, from the Parque Florestal do Rio Doce (Brazil). This population is characterized by 2n 42 chromosomes for both males and females and an XX/XY sex ...