Embryo-toxic effects of environmental concentrations of chlorpyrifos on the crustacean Daphnia magna
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/20.500.12207/503 |
Resumo: | Chlorpyrifos is a non-systemic organophosphorus insecticide leading to the inhibition of the enzyme cholinesterase. Nowadays, this insecticide is widely used on a variety of crops and is frequently detected in surface waters around the world. The main aims of this study were to evaluate the effects of this insecticide on the embryonic development of Daphnia magna, and to assess the sensitivity of this endpoint in comparison with the endpoint of the chronic 21-day test. The featured endpoints were the number of offspring per female and abnormalities of both offspring and embryos. Chlorpyrifos exhibited significant toxic effects on the embryonic development manifested in the appearance of abnormalities, including arrested eggs, in 20% of the embryos exposed to a concentration of 0.01 μg L−1. Furthermore, chronic exposition to the insecticide yielded a proportion of offspring abnormalities in later stages of development of about 43% at 0.01 μg L−1. In contrast, a significant reduction in the number of offspring produced per female was only observed above a concentration of 0.03 μg L−1. Hence, these results suggest that developmental abnormality was a more sensitive endpoint than the number of offspring production per female. |
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Embryo-toxic effects of environmental concentrations of chlorpyrifos on the crustacean Daphnia magnaDaphnia magnaChlorpyrifosEmbryo toxicityDevelopmental abnormalitiesChlorpyrifos is a non-systemic organophosphorus insecticide leading to the inhibition of the enzyme cholinesterase. Nowadays, this insecticide is widely used on a variety of crops and is frequently detected in surface waters around the world. The main aims of this study were to evaluate the effects of this insecticide on the embryonic development of Daphnia magna, and to assess the sensitivity of this endpoint in comparison with the endpoint of the chronic 21-day test. The featured endpoints were the number of offspring per female and abnormalities of both offspring and embryos. Chlorpyrifos exhibited significant toxic effects on the embryonic development manifested in the appearance of abnormalities, including arrested eggs, in 20% of the embryos exposed to a concentration of 0.01 μg L−1. Furthermore, chronic exposition to the insecticide yielded a proportion of offspring abnormalities in later stages of development of about 43% at 0.01 μg L−1. In contrast, a significant reduction in the number of offspring produced per female was only observed above a concentration of 0.03 μg L−1. Hence, these results suggest that developmental abnormality was a more sensitive endpoint than the number of offspring production per female.2013-10-16T15:43:15Z2009-10-16T00:00:00Z2009-09-01T00:00:00Z2009-09-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/20.500.12207/503engmetadata only accessinfo:eu-repo/semantics/openAccessPalma, PatríciaPalma, V.Fernandes, R.Bohn, A.Soares, A.Barbosa, I.reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2022-06-23T07:46:25Zoai:repositorio.ipbeja.pt:20.500.12207/503Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T14:58:12.740621Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Embryo-toxic effects of environmental concentrations of chlorpyrifos on the crustacean Daphnia magna |
title |
Embryo-toxic effects of environmental concentrations of chlorpyrifos on the crustacean Daphnia magna |
spellingShingle |
Embryo-toxic effects of environmental concentrations of chlorpyrifos on the crustacean Daphnia magna Palma, Patrícia Daphnia magna Chlorpyrifos Embryo toxicity Developmental abnormalities |
title_short |
Embryo-toxic effects of environmental concentrations of chlorpyrifos on the crustacean Daphnia magna |
title_full |
Embryo-toxic effects of environmental concentrations of chlorpyrifos on the crustacean Daphnia magna |
title_fullStr |
Embryo-toxic effects of environmental concentrations of chlorpyrifos on the crustacean Daphnia magna |
title_full_unstemmed |
Embryo-toxic effects of environmental concentrations of chlorpyrifos on the crustacean Daphnia magna |
title_sort |
Embryo-toxic effects of environmental concentrations of chlorpyrifos on the crustacean Daphnia magna |
author |
Palma, Patrícia |
author_facet |
Palma, Patrícia Palma, V. Fernandes, R. Bohn, A. Soares, A. Barbosa, I. |
author_role |
author |
author2 |
Palma, V. Fernandes, R. Bohn, A. Soares, A. Barbosa, I. |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Palma, Patrícia Palma, V. Fernandes, R. Bohn, A. Soares, A. Barbosa, I. |
dc.subject.por.fl_str_mv |
Daphnia magna Chlorpyrifos Embryo toxicity Developmental abnormalities |
topic |
Daphnia magna Chlorpyrifos Embryo toxicity Developmental abnormalities |
description |
Chlorpyrifos is a non-systemic organophosphorus insecticide leading to the inhibition of the enzyme cholinesterase. Nowadays, this insecticide is widely used on a variety of crops and is frequently detected in surface waters around the world. The main aims of this study were to evaluate the effects of this insecticide on the embryonic development of Daphnia magna, and to assess the sensitivity of this endpoint in comparison with the endpoint of the chronic 21-day test. The featured endpoints were the number of offspring per female and abnormalities of both offspring and embryos. Chlorpyrifos exhibited significant toxic effects on the embryonic development manifested in the appearance of abnormalities, including arrested eggs, in 20% of the embryos exposed to a concentration of 0.01 μg L−1. Furthermore, chronic exposition to the insecticide yielded a proportion of offspring abnormalities in later stages of development of about 43% at 0.01 μg L−1. In contrast, a significant reduction in the number of offspring produced per female was only observed above a concentration of 0.03 μg L−1. Hence, these results suggest that developmental abnormality was a more sensitive endpoint than the number of offspring production per female. |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009-10-16T00:00:00Z 2009-09-01T00:00:00Z 2009-09-01T00:00:00Z 2013-10-16T15:43:15Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/20.500.12207/503 |
url |
http://hdl.handle.net/20.500.12207/503 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
metadata only access info:eu-repo/semantics/openAccess |
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metadata only access |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799129855976013824 |