Consulta: subjectFacets:"Tiburonella viscana"
Registros recuperados: 3
Data/hora: 07/06/2024 04:51:39

Use of the burrowing amphipod Tiburonella viscana as a tool in marine sediments contamination assessment
Provedor de dados: 52
Autores: Abessa,Denis M.S.; Sousa,Eduinety C.P.M.; Rachid,Bauer R.F.; Mastroti,Ricardo R.
The acute toxicity of sediment samples from Santos Estuary was evaluated by using sediment toxicity tests with the burrowing amphipod Tiburonella viscana. Survival of amphipods acclimated for 2 and 15 days was also analyzed. The sensitivity of this species was evaluated by 48h-exposure tests using potassium dichromate (K2Cr2O7) as a reference substance. The sediment samples from Gonzaga Beach, Prainha and Paranapuã Beach were not toxic to T. viscana, whereas the samples collected at Santos Channel and São Vicente Bay were toxic. The acclimation period did not affect survival significantly, in spite of the higher mortality within the 15-day acclimated group. The estimated 48-h LC50 to K2Cr2O7 was 6.029 mg/L (3.27-11.12). Toxicity tests using T. viscana were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amphipoda; Tiburonella viscana; Toxicity test; Sediment.
Ano: 1998
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89131998000200009

A simple approach to integrate the ecotoxicological and chemical data for the establishment of environmental risk levels
Provedor de dados: 52
Autores: Cesar,Augusto; Abessa,Denis Moledo de Souza; Pereira,Camilo Dias Seabra; Santos,Aldo Ramos; Fernández,Nuria; Choueri,Rodrigo Brasil; DelValls,Tomas Angel.
In this work, multivariate and numeric methods were used to integrate the chemical and ecotoxicological data obtained for the sediments from the Santos Estuarine System, and for the vicinity of the discharges of the Submarine Sewage Outfall of Santos, in order to establish more accurately the environmental risks, identify the priority areas and thus provide guidance to control the programs and public policies. For both the datasets, the concentrations which exceeded numeric sediment guidelines tended to be associated to toxicity. For the estuary, this trend was corroborated by the correlations between the toxicity and Cu and PAHs levels, whereas for the sewage outfall region, this was observed through the correlation between the toxicity and Hg contents....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sediment; Contamination; Toxicity; Tiburonella viscana; Environmental risk assessment.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000100028

Sensitivity of the amphipod Tiburonella viscana (Platyischnopidae) to K2CR2O7
Provedor de dados: 52
Autores: Abessa,Denis M. S.; Sousa,Eduinetty C. P. M.
The sensitivity of Tiburonella viscana to K2Cr2O7 was evaluated from 18 water-only toxicity tests. The mean 48h-LC50 was estimated as 11.217 ± 3.768 mg/l, and the warning limits were calculated (mean LC50 ± 2 SD) as being between 3.68 and 18.75 mg/l. These results are baseline for the species and can be used for future comparisons in toxicity tests.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tiburonella viscana; Potassium dichromate; Brazil; Ecotoxicology.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132003000100009