Toxicity and genotoxicity of water and sediment from streams on dotted duckweed (Landoltia punctata)
Autor(a) principal: | |
---|---|
Data de Publicação: | 2014 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Brazilian Journal of Biology |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842014000400769 |
Resumo: | Most rivers are used as a source to supply entire cities; the quality of water is directly related to the quality of tributaries. Unfortunately men have neglected the importance of streams, which receive domestic and industrial effluents and transport nutrients and pesticides from rural areas. Given the complexity of the mixtures discharged into these water bodies, this study aimed to evaluate the quality of water and sediment of ten tributaries of Pirapó River, in Maringá, Paraná State, Brazil. To this end, the free-floating macrophyte Landoltia punctata (G. Meyer) Les & D.J.Crawford was used as test organism in microcosm, and the toxicity of water and sediment samples was evaluated by the relative growth rate, dry/fresh biomass ratio, and genotoxic effects (comet assay). Samples of water and sediment of each stream were arranged in microcosms with L. punctata. Seven days later, plants were collected for analysis. Nutrient levels were higher than the reference location, indicating eutrophication, but the results indicated a toxic effect for only three streams, and a genotoxic effect for all streams. |
id |
IIE-1_f2088e4be8e6e247e04b0a24798dba15 |
---|---|
oai_identifier_str |
oai:scielo:S1519-69842014000400769 |
network_acronym_str |
IIE-1 |
network_name_str |
Brazilian Journal of Biology |
repository_id_str |
|
spelling |
Toxicity and genotoxicity of water and sediment from streams on dotted duckweed (Landoltia punctata)Ecotoxicologyaquatic macrophytemicrocosmanthropogenic pollutioncomet assayMost rivers are used as a source to supply entire cities; the quality of water is directly related to the quality of tributaries. Unfortunately men have neglected the importance of streams, which receive domestic and industrial effluents and transport nutrients and pesticides from rural areas. Given the complexity of the mixtures discharged into these water bodies, this study aimed to evaluate the quality of water and sediment of ten tributaries of Pirapó River, in Maringá, Paraná State, Brazil. To this end, the free-floating macrophyte Landoltia punctata (G. Meyer) Les & D.J.Crawford was used as test organism in microcosm, and the toxicity of water and sediment samples was evaluated by the relative growth rate, dry/fresh biomass ratio, and genotoxic effects (comet assay). Samples of water and sediment of each stream were arranged in microcosms with L. punctata. Seven days later, plants were collected for analysis. Nutrient levels were higher than the reference location, indicating eutrophication, but the results indicated a toxic effect for only three streams, and a genotoxic effect for all streams.Instituto Internacional de Ecologia2014-11-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842014000400769Brazilian Journal of Biology v.74 n.4 2014reponame:Brazilian Journal of Biologyinstname:Instituto Internacional de Ecologia (IIE)instacron:IIE10.1590/1519-6984.01013info:eu-repo/semantics/openAccessFactori,RLeles,SMNovakowski,GCRocha,CLSCThomaz,SMeng2015-11-24T00:00:00Zoai:scielo:S1519-69842014000400769Revistahttps://www.scielo.br/j/bjb/https://old.scielo.br/oai/scielo-oai.phpbjb@bjb.com.br||bjb@bjb.com.br1678-43751519-6984opendoar:2015-11-24T00:00Brazilian Journal of Biology - Instituto Internacional de Ecologia (IIE)false |
dc.title.none.fl_str_mv |
Toxicity and genotoxicity of water and sediment from streams on dotted duckweed (Landoltia punctata) |
title |
Toxicity and genotoxicity of water and sediment from streams on dotted duckweed (Landoltia punctata) |
spellingShingle |
Toxicity and genotoxicity of water and sediment from streams on dotted duckweed (Landoltia punctata) Factori,R Ecotoxicology aquatic macrophyte microcosm anthropogenic pollution comet assay |
title_short |
Toxicity and genotoxicity of water and sediment from streams on dotted duckweed (Landoltia punctata) |
title_full |
Toxicity and genotoxicity of water and sediment from streams on dotted duckweed (Landoltia punctata) |
title_fullStr |
Toxicity and genotoxicity of water and sediment from streams on dotted duckweed (Landoltia punctata) |
title_full_unstemmed |
Toxicity and genotoxicity of water and sediment from streams on dotted duckweed (Landoltia punctata) |
title_sort |
Toxicity and genotoxicity of water and sediment from streams on dotted duckweed (Landoltia punctata) |
author |
Factori,R |
author_facet |
Factori,R Leles,SM Novakowski,GC Rocha,CLSC Thomaz,SM |
author_role |
author |
author2 |
Leles,SM Novakowski,GC Rocha,CLSC Thomaz,SM |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Factori,R Leles,SM Novakowski,GC Rocha,CLSC Thomaz,SM |
dc.subject.por.fl_str_mv |
Ecotoxicology aquatic macrophyte microcosm anthropogenic pollution comet assay |
topic |
Ecotoxicology aquatic macrophyte microcosm anthropogenic pollution comet assay |
description |
Most rivers are used as a source to supply entire cities; the quality of water is directly related to the quality of tributaries. Unfortunately men have neglected the importance of streams, which receive domestic and industrial effluents and transport nutrients and pesticides from rural areas. Given the complexity of the mixtures discharged into these water bodies, this study aimed to evaluate the quality of water and sediment of ten tributaries of Pirapó River, in Maringá, Paraná State, Brazil. To this end, the free-floating macrophyte Landoltia punctata (G. Meyer) Les & D.J.Crawford was used as test organism in microcosm, and the toxicity of water and sediment samples was evaluated by the relative growth rate, dry/fresh biomass ratio, and genotoxic effects (comet assay). Samples of water and sediment of each stream were arranged in microcosms with L. punctata. Seven days later, plants were collected for analysis. Nutrient levels were higher than the reference location, indicating eutrophication, but the results indicated a toxic effect for only three streams, and a genotoxic effect for all streams. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-11-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842014000400769 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842014000400769 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/1519-6984.01013 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Instituto Internacional de Ecologia |
publisher.none.fl_str_mv |
Instituto Internacional de Ecologia |
dc.source.none.fl_str_mv |
Brazilian Journal of Biology v.74 n.4 2014 reponame:Brazilian Journal of Biology instname:Instituto Internacional de Ecologia (IIE) instacron:IIE |
instname_str |
Instituto Internacional de Ecologia (IIE) |
instacron_str |
IIE |
institution |
IIE |
reponame_str |
Brazilian Journal of Biology |
collection |
Brazilian Journal of Biology |
repository.name.fl_str_mv |
Brazilian Journal of Biology - Instituto Internacional de Ecologia (IIE) |
repository.mail.fl_str_mv |
bjb@bjb.com.br||bjb@bjb.com.br |
_version_ |
1752129880451973120 |