Abstract This study assessed the genotoxicity and chemical quality of the Rio dos Sinos, southern Brazil. During two years, bimonthly, cuttings of Tradescantia pallida var. purpurea with flower buds were exposed to river water samples from Caraá, Santo Antônio da Patrulha, Taquara and Campo Bom, which ...
Abstract INTRODUCTION: This study quantified Mycobacterium leprae bacilli in environmental water samples from five municipalities in the State of Ceará by quantitative polymerase chain reaction (qPCR) and compared the identified genotypes with those obtained from leprosy patient biopsies. METHODS: We ...
AbstractThe gordiids are freshwater representatives of the parasite phylum Nematomorpha that function as a link between aquatic and terrestrial ecosystems. In recent years, different ecotoxicologic studies have been made with the South-American gordiid species, Chordodes nobilii, that have demonstrated t...
Abstract:Freshwater crab, Sodhiana iranica, is an endemic gecarcinucid crab that has been recently reported from Southern Iran. This research examined some reproductive aspects of S. iranica from Eelood freshwater spring, Southern Iran. Crabs were haphazardly sampled from April 2012 to April 2013, on a b...
ABSTRACT Freshwater algae are rich sources of structurally biologically active metabolites, such as fatty acids, steroids, carotenoids and polysaccharides. Among these metabolites, lectins stand out. Lectins are proteins or glycoproteins of non-immune origin which bind to carbohydrates or glycoconjugates...
Abstract The biodegradation of synthetic dyes by fungi is emerging as an effective and promising approach. In the present study, freshwater fungal strains isolated from submerged woods were screened for the decolorization of 7 synthetic dyes. Subsequently, 13 isolates with high decolorization capability ...
Resumen:Pomacea flagellata es una especie de caracol de agua dulce nativo en el sureste de México. Sobre esta especie existen pocos estudios y en ninguno se han abordado aspectos de su reproducción. Este caracol ha sido explotado durante años en la laguna Bacalar y sus poblaciones han decrecido consid...
Análisis de Varianza,
Clima,
Agua Dulce,
México,
Oviposición/fisiología,
Densidad de Población,
Lluvia,
Reproducción/fisiología,
Estaciones del Año,
Caracoles/fisiología,
Estadísticas no Paramétricas,
Temperatura,
Factores de Tiempo
Abstract:Sulfate-reducing bacteria (SRB) and methanogenic archaea (MA) share common niches in coastal sediments during the terminal phases of the anaerobic mineralization of organic matter. The purpose of this study was to analyze the spatial - temporal variation of SRB and MA in the sediments of a tropi...
Acetatos/metabolismo,
Análisis de Varianza,
Archaea/aislamiento & purificación,
Archaea/metabolismo,
Agua Dulce/microbiología,
Sedimentos Geológicos/microbiología,
Golfo de México,
Microbiota,
Lluvia,
Valores de Referencia,
Análisis Espacio-Temporal,
Bacterias Reductoras del Azufre/aislamiento & purificación,
Temperatura,
Factores de Tiempo,
Clima Tropical
Abstract The phosphorus and nitrogen discharge via effluent of intensive trout farming system was quantified through the use of environmental indicators. The nutrient loads, the mass balance, the estimated amount of nutrients in feed and the amount of nutrients converted in fish biomass were calculated b...
We described the spatial distribution of fish trophic groups in the Água Boa Stream, MS, Brazil. Specimens were caught using electrofishing in the upper, intermediate and lower stretches of the stream, between March and November 2008. We analyzed 415 stomach contents of 24 species. Detritus/sediment and...
