lt is registered for lhe firsl time in lhe Rio Grande do Sul coast, lhe crab Pallopells berllllldellsis Benedict & Rathbun, 1891, which previous southern limit ofdistribution was at Santa Catarina, and now it is extended ...

Several studies have focused on the release of carbohydrates by phytoplankton because of the ecological significance of such compounds. This process increases the supply of carbon to the heterotrophic community, enhancing ...

The highest density of aggregates (1.4 3 103 L21) in the hypereutrophic Barra Bonita Reservoir (mean depth of 10.2 m) coincided with the peak population density of the diatom Aulacoseira granulata (2.3 3 106 chains L21), ...

This study investigated the body copper accumulation in the amphipod Gammarus sp.. Groups of copper-binding proteins were also investigated considering their molecular weights. Regarding copper accumulation, a saturation ...

Avaliou-se o efeito da idade de abate e da castração sobre a composição tecidual da paleta e da perna e composição química dos músculos Tríceps braquial e Semimembranoso em cordeiros Corriedale abatidos aos 120, 210 e ...

Foram coletados dezesseis espécimes de Neohelice granulata no estuário da Laguna dos Patos sendo que, de cada um destes foram coletados cinco apêndices locomotores. Dois destes apêndices foram fixados em Formol a 10%, ...

Para otimizar a avaliação in vivo e da carcaça foram estudados os efeitos de sexo, procedência/lote, raça, avaliadores e a relação entre as características do animal e da carcaça. Foram utilizados 98 cordeiros procedentes ...

Imposex in gastropods is used worldwide as a bioindicator of organotin compounds (OTs). Samples of three prosobranch mollusc species were collected(Stramonita haemastoma, Leucozonia nassa and Cymatium parthenopeum) in ...

In fishes, arsenic (As) is absorbed via the gills and is capable of causing disturbance to the antioxidant system. The objective of present studywas to evaluate antioxidant responses after As exposure in gills of ...

Determination of total antioxidant capacity, instead of the measurements of limited number of antioxidants, is very important for the understanding of how antioxidants interact with reactive oxygen species (ROS). Several ...

Numerous studies have shown that melatonin exerts some influence on the antioxidant defense system (ADS) in vertebrates, but for crustaceans no such effect has been demonstrated till now. However,earlier reports did show ...

Microcystins (MICs) are potent toxins produced worldwide by cyanobacteria during bloom events.Phosphatases inhibition is a well recognized effect of this kind of toxins as well as oxidative stress. However, it is not fully ...

We evaluated the effects of aqueous extracts of the cyanobacterium-producing microcystin(MC), Microcystis aeruginosa (strain RST9501), on detoxification capacity and glutathione (GSH) synthesis in liver, brain, gill, ...

This study analyzed water quality in regions around Patos lagoon (Southern Brazil) that are under anthropogenic pressure. Water samples were collected from five different sites, including one used as a source for human ...

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 ...

Arsenic(As)is a wide spread pollutant in the world and its toxicity is related to its chemical form,with inorganic forms being considered more toxic than the organic form, and huge differences ineffects and processes ...

The purpose of this catalogue was to combine the available data from publications, theses, databases, and herbarium specimens from around 120 Herbaria, and colections sampled in Brazilian vegetation during the last 15 years ...

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 ...

This work accomplished in a remainder ombrophylous mixed forest of the municipal district of Curitiba, consists of the rising floristic of vascular epiphytes of the San Cristovão Forest. Starting from collections, analyses ...