Alterations in methane concentration in the water column of aquatic systems is closely linked to the processes of pro- duction and consumption of this gas, i.e., methanogenesis and methanotrophy respectively. The aim of ...

This study was carried out at the Biguás and Polegar lakes, both small environments but at different successional stages. The main objective was to characterize the macroinvertebrate community associated to the aquatic ...

The gut content of 495 specimens of Farfantepenaeus brasiliensis, 131 of F. paulensis (Penaeidae) and 102 of Macrobrachium acanthurus (Palaemonidae) were analyzed to establish the composition of their diets F. brasiliensis ...

The growth relations of the shrimps Farfantepenaeus brasiliensis (Latreille, 1817) and F. paulensis (Pérez-Farfante, 1967) were evaluated at Imboassica lagoon, Macaé, Rio de Janeiro State, between June 1995 and September ...

Macrobrachium acanthurus Wiegmann, 1836 is a Palaemonidae commonly found in Brazilian coastal environments. At Imboassica lagoon, located in the north of the State of Rio de Janeiro, it is found in two stages of its life ...

This work was performed at Imboassica lagoon (Macaé, RJ), an urban coastal lagoon subject to anthropogenic impacts, such as the inflow of untreated domestic sewage, landfilling in its margins and artificial openings of the ...

The northern part of the state of Rio de Janeiro shelters many coastal lagoons, located, mostly, i the “restinga” strip that stretches from the municipality of Macaé to the municipality of Quissamã During 1995 and 1996 ...

O balneário Cassino localiza-se no município de Rio Grande, na planície costeira sul do Rio Grande do Sul. Apresenta em toda sua extensão canais construídos para escoamento pluvial, onde desenvolvem-se densos estandes ...

Habitat use affects food intake, reproductive fitness and body temperature control in reptiles. Habitat use depends on both the characteristics of the animal and the environmental heterogeneity. In this study we investigated ...

In 1999, at-sea activity of two young southern elephant seal males (Mirounga leonina) from Elephant Is.(61°13’S,55°23’W), Antarctica, was monitored and tracked for 9 months. The individuals were randomly selected, ...

Os crustáceos estão naturalmente expostos à radiação ultravioleta, podendo esta produzir mudanças bioquímicas e na função imune e predispor ao aparecimento de doenças. Objetivo: Quantificar a concentração de glicose na ...

Os termos pseudo-hermafrodita e intersexo são utilizados para se referir a animais com traços sexuais ambíguos. O diagnostico de pseudo-hermafrodita é baseado nos vestígios de gônadas e aspecto fenotípico do trato reprodutivo. ...

Neste estudo foram estabelecidas a composição específica e a sazonalidade da ocorrência das aves na área do Campus Carreiros da Fundação Universidade Federal do Rio Grande (FURG), Rio Grande, RS. Para isso foram realizadas ...

Multidrug resistance (MDR) is an obstacle in cancer treatment. An understanding of how tumoral cells react to oxidants can help us elucidate the cellular mechanism involved in resistance. Microcystins are cyanobacteria ...

This paper describes antimicrobial prescription,clinical indications, and seasonal characteristics in primary health care. We performed a cross-sectional study in family health units in Bagé, Rio Grande do Sul State, Brazil, ...

O estuário da Lagoa dos Patos (Rio Grande do Sul, Brasil) possui aproximadamente 1000 km2 de águas com pequena profundidade, alta produtividade primária e secundária, e sedimentos arenosos ricos em organismos bentônicos ...

This was a cross-sectional, descriptive, quantitative study in the port of Rio Grande, Rio Grande do Sul, Brazil, aimed at identifying occupational risk perceptions in a sample of 306 temporary dockworkers. Most temporary ...

The aim of the study was to evaluate the understanding of the antimicrobial prescriptions by children’s accompaning adults, describing the medicine utilization profile among Health Units in a South Brazilian city. A ...

Polychaeta species like Laeonereis acuta (Nereididae) usually secrete great amounts of mucus that wrap the animal inside. Taking into account that fungi action in the sediment and UV radiation acting on dissolved organic ...

Cellular oxidative stress may promote damage or death in biological systems and may be caused by production of pro-oxidant molecules known as reactive oxygen species (ROS). The aim of this work was to analyze the activity ...