Results: 27

Acute and subchronic effects of petroleum on the freshwater fish Hoplias aff. malabaricus

Braz. j. biol; 84 (), 2024
Abstract Petroleum water soluble fraction (WSF) impairs organisms, but damages may vary among cell and tissue levels. The aim of the present study was to evaluate the acute (24 h, 48 h, 72 h) and subchronic effects (36 days) of WSF (0%, 25% and 100%) in juveniles of the Neotropical top predator fish Hopl...

Biodegradation of petroleum by bacteria isolated from fishes of Indian Ocean

Braz. j. biol; 82 (), 2022
In this study, oil degrading bacteria discovered from fish living near the oil ports at Karachi in Pakistan were characterized. The bacteria isolated from skin, gills, and gut in fish could consume crude oil as a source of carbon and energy. Total 36 isolates were tested using Nutrient Agar (NA) and MSA ...

Isolation and characterization of hydrocarbon-degrading bacteria from gas station leaking-contaminated groundwater in the Southern Amazon, Brazil

Braz. j. biol; 80 (2), 2020
Abstract Twenty-three hydrocarbon-degrading bacteria strains were isolated from gas station leaking-contaminated groundwater located in the Southern Amazon, Brazil. Based on hydrocarbon (diesel, hexadecane, benzene, toluene and xylene) degradation ability, two strains were selected for further study. The...

Efecto de bacterias emulsificantes en la atenuación de la fitotoxicidad de suelos contaminados con petróleo intemperizado

Rev. biol. trop; 68 (2), 2020
Introducción: Las plantas y los microorganismos se han utilizado como bioindicadores de la toxicidad inducida por hidrocarburos presentes en los suelos. Objetivo: El presente trabajo evaluó la toxicidad de un Gleysol contaminado de origen con diferentes concentraciones de petróleo intemperizado, recol...

Aspectos de regulação internacional do petróleo: o caso Brasil
Aspects of international oil regulation: the Brazil case

Estud. av; 33 (95), 2019
O presente trabalho tem por objeto abordar os aspectos de regulação internacional do petróleo, mais precisamente aqueles previstos na Convenção das Nações Unidas sobre o direito do mar de 1982, que definem a obrigatoriedade do pagamento de royalties às Nações Unidas advindos da exploração dos...

Petroleum contamination and bioaugmentation in bacterial rhizosphere communities from Avicennia schaueriana

Braz. j. microbiol; 49 (4), 2018
ABSTRACT Anthropogenic activity, such as accidental oil spills, are typical sources of urban mangrove pollution that may affect mangrove bacterial communities as well as their mobile genetic elements. To evaluate remediation strategies, we followed over the time the effects of a petroleum hydrocarbon deg...

Indagación exploratoria in vitro de la capacidad degradadora de la cepa comercial Pleurotus ostreatus sobre dos concentraciones de petróleo crudo

NOVA publ. cient; 16 (30), 2018
Resumen Objetivo. Evaluar la potencial actividad degradadora de la cepa comercial Pleurotus ostreatus sobre petróleo crudo como única fuente de carbono. Método. Se empleó un inóculo de 10mg del hongo en medio mínimo líquido de sales con volúmenes de 0,5% y 1% de petróleo en agitación constant...

Evaluación in vitro de la capacidad biorremediadora de hongos filamentosos sobre petróleo crudo

NOVA publ. cient; 16 (30), 2018
Resumen Objetivo. Evaluar la capacidad biorremediadora de algunas especies de hongos filamentosos en suelos contaminados con petróleo crudo. Métodos. Se aislaron 138 cepas a partir de 90 cultivos primarios en muestras de suelos obtenidas en los municipios de Yondó (Antioquia), Acacías (Meta) y Tuma...

Reintroducing plant coverage in a tropical wetland contaminated with oil and sulfate: rhizosphere effects on Desulfovibrio populations

Rev. biol. trop; 66 (2), 2018
Abstract The Mexican tropical wetland is a coastal system with capacity to support the contamination derived from the extractive industry and the transformation of crude oil, due to its high plant biodiversity and the presence of rhizospheric reducing sulphate bacteria from plants tolerant to crude oil. ...

The effects of oil pollution in the development of Ejidal Communities: the case of the San Juan river basin (Nuevo León, Mexico)

Investig. desar.; 26 (1), 2018
RESUMEN La presente investigación analiza, en varios ejidos, los efectos sociales, económicos y ecológicos causados por el derrame de petróleo en el río San Juan (Nuevo León, México). Con este fin, se realizaron encuestas entre los pobladores y entrevistas a actores clave. Los resultados de la inv...