Impact of cypermethrin on stream fish populations under field-use in biotech-soybean production

Autores
Carriquiriborde, Pedro; Díaz, Juan; Mugni, Hernan Diego; Bonetto, Carlos Alberto; Ronco, Alicia Estela
Año de publicación
2007
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The impact of biotech-soybean technology on freshwater ecosystems is being evaluated in the Rolling Pampas region, Argentina. The effect of cypermethrin, the main soybean insecticide, on low-order temperate-stream fish populations was investigated for two consecutive crop cycles under field-use conditions in biotech-soybean production. Cypermethrin was unable to induce mortality or behavioral effects on any of the fish species resident in a first-order stream across a crop field (pulsed acute exposure scenario) sprayed according to conventional practices. No spatially or temporally dependent effects were observed on population parameters (size-class structure, abundance, survival, sex and immature/mature ratio, condition factor) of resident or caged Cnesterodon decemmaculatus after spraying or rainfall events, not even one year after, at the beginning of the next crop cycle. Although cypermethrin was “very highly toxic” to C. decemmaculatus in laboratory water (96 h-LC50 = 0.43 μg/l), its toxicity was reduced in filtered (78%) and unfiltered (92%) stream water. Changes in LC50 values were mainly correlated with the OC content of each water fraction (r2 = 0.99; p < 0.01; n = 9), showing that both DOC and TOC contributed proportionally to toxicity reduction. Protective effects of stream water (12-fold reduction LC50 values) explained the lack of effects on fish populations in the field, despite cypermethrin water concentrations after spraying reached values comparable with the 96 h-LC50. Therefore, cypermethrin under field-use conditions in transgenic-soybean production represents a low risk of acute exposure for fish populations inhabiting low-order temperate-streams rich in TOC. The relationship between LC50 and TOC could be a convenient way to improve risk estimation based on laboratory toxicity testing.
Fil: Carriquiriborde, Pedro. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Química. Centro de Investigaciones del Medio Ambiente; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Díaz, Juan. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Química. Centro de Investigaciones del Medio Ambiente; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Mugni, Hernan Diego. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Limnología ; Argentina
Fil: Bonetto, Carlos Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Limnología ; Argentina
Fil: Ronco, Alicia Estela. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Química. Centro de Investigaciones del Medio Ambiente; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
Cypermethrin
Transgenic-Soybean Crops
Temperate-Plains Streams
Cnesterodon Decemmaculatus
Field-Laboratory Comparison
Organic Carbon
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/30735
Acceder
id CONICETDig_fdf7ce694fe9122a69e015dbd564477c
oai_identifier_str oai:ri.conicet.gov.ar:11336/30735
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Impact of cypermethrin on stream fish populations under field-use in biotech-soybean productionCarriquiriborde, PedroDíaz, JuanMugni, Hernan DiegoBonetto, Carlos AlbertoRonco, Alicia EstelaCypermethrinTransgenic-Soybean CropsTemperate-Plains StreamsCnesterodon DecemmaculatusField-Laboratory ComparisonOrganic Carbonhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1The impact of biotech-soybean technology on freshwater ecosystems is being evaluated in the Rolling Pampas region, Argentina. The effect of cypermethrin, the main soybean insecticide, on low-order temperate-stream fish populations was investigated for two consecutive crop cycles under field-use conditions in biotech-soybean production. Cypermethrin was unable to induce mortality or behavioral effects on any of the fish species resident in a first-order stream across a crop field (pulsed acute exposure scenario) sprayed according to conventional practices. No spatially or temporally dependent effects were observed on population parameters (size-class structure, abundance, survival, sex and immature/mature ratio, condition factor) of resident or caged Cnesterodon decemmaculatus after spraying or rainfall events, not even one year after, at the beginning of the next crop cycle. Although cypermethrin was “very highly toxic” to C. decemmaculatus in laboratory water (96 h-LC50 = 0.43 μg/l), its toxicity was reduced in filtered (78%) and unfiltered (92%) stream water. Changes in LC50 values were mainly correlated with the OC content of each water fraction (r2 = 0.99; p < 0.01; n = 9), showing that both DOC and TOC contributed proportionally to toxicity reduction. Protective effects of stream water (12-fold reduction LC50 values) explained the lack of effects on fish populations in the field, despite cypermethrin water concentrations after spraying reached values comparable with the 96 h-LC50. Therefore, cypermethrin under field-use conditions in transgenic-soybean production represents a low risk of acute exposure for fish populations inhabiting low-order temperate-streams rich in TOC. The relationship between LC50 and TOC could be a convenient way to improve risk estimation based on laboratory toxicity testing.Fil: Carriquiriborde, Pedro. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Química. Centro de Investigaciones del Medio Ambiente; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Díaz, Juan. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Química. Centro de Investigaciones del Medio Ambiente; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Mugni, Hernan Diego. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Limnología ; ArgentinaFil: Bonetto, Carlos Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Limnología ; ArgentinaFil: Ronco, Alicia Estela. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Química. Centro de Investigaciones del Medio Ambiente; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaPergamon-Elsevier Science Ltd.2007-04-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/30735Ronco, Alicia Estela; Bonetto, Carlos Alberto; Mugni, Hernan Diego; Díaz, Juan; Carriquiriborde, Pedro; Impact of cypermethrin on stream fish populations under field-use in biotech-soybean production; Pergamon-Elsevier Science Ltd.; Chemosphere; 68; 4; 8-4-2007; 613-6210045-6535CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.chemosphere.2007.02.051info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0045653507003050info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:41:08Zoai:ri.conicet.gov.ar:11336/30735instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 15:41:08.722CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Impact of cypermethrin on stream fish populations under field-use in biotech-soybean production
title Impact of cypermethrin on stream fish populations under field-use in biotech-soybean production
spellingShingle Impact of cypermethrin on stream fish populations under field-use in biotech-soybean production
Carriquiriborde, Pedro
Cypermethrin
Transgenic-Soybean Crops
Temperate-Plains Streams
Cnesterodon Decemmaculatus
Field-Laboratory Comparison
Organic Carbon
title_short Impact of cypermethrin on stream fish populations under field-use in biotech-soybean production
title_full Impact of cypermethrin on stream fish populations under field-use in biotech-soybean production
title_fullStr Impact of cypermethrin on stream fish populations under field-use in biotech-soybean production
title_full_unstemmed Impact of cypermethrin on stream fish populations under field-use in biotech-soybean production
title_sort Impact of cypermethrin on stream fish populations under field-use in biotech-soybean production
dc.creator.none.fl_str_mv Carriquiriborde, Pedro
Díaz, Juan
Mugni, Hernan Diego
Bonetto, Carlos Alberto
Ronco, Alicia Estela
author Carriquiriborde, Pedro
author_facet Carriquiriborde, Pedro
Díaz, Juan
Mugni, Hernan Diego
Bonetto, Carlos Alberto
Ronco, Alicia Estela
author_role author
author2 Díaz, Juan
Mugni, Hernan Diego
Bonetto, Carlos Alberto
Ronco, Alicia Estela
author2_role author
author
author
author
dc.subject.none.fl_str_mv Cypermethrin
Transgenic-Soybean Crops
Temperate-Plains Streams
Cnesterodon Decemmaculatus
Field-Laboratory Comparison
Organic Carbon
topic Cypermethrin
Transgenic-Soybean Crops
Temperate-Plains Streams
Cnesterodon Decemmaculatus
Field-Laboratory Comparison
Organic Carbon
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The impact of biotech-soybean technology on freshwater ecosystems is being evaluated in the Rolling Pampas region, Argentina. The effect of cypermethrin, the main soybean insecticide, on low-order temperate-stream fish populations was investigated for two consecutive crop cycles under field-use conditions in biotech-soybean production. Cypermethrin was unable to induce mortality or behavioral effects on any of the fish species resident in a first-order stream across a crop field (pulsed acute exposure scenario) sprayed according to conventional practices. No spatially or temporally dependent effects were observed on population parameters (size-class structure, abundance, survival, sex and immature/mature ratio, condition factor) of resident or caged Cnesterodon decemmaculatus after spraying or rainfall events, not even one year after, at the beginning of the next crop cycle. Although cypermethrin was “very highly toxic” to C. decemmaculatus in laboratory water (96 h-LC50 = 0.43 μg/l), its toxicity was reduced in filtered (78%) and unfiltered (92%) stream water. Changes in LC50 values were mainly correlated with the OC content of each water fraction (r2 = 0.99; p < 0.01; n = 9), showing that both DOC and TOC contributed proportionally to toxicity reduction. Protective effects of stream water (12-fold reduction LC50 values) explained the lack of effects on fish populations in the field, despite cypermethrin water concentrations after spraying reached values comparable with the 96 h-LC50. Therefore, cypermethrin under field-use conditions in transgenic-soybean production represents a low risk of acute exposure for fish populations inhabiting low-order temperate-streams rich in TOC. The relationship between LC50 and TOC could be a convenient way to improve risk estimation based on laboratory toxicity testing.
Fil: Carriquiriborde, Pedro. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Química. Centro de Investigaciones del Medio Ambiente; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Díaz, Juan. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Química. Centro de Investigaciones del Medio Ambiente; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Mugni, Hernan Diego. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Limnología ; Argentina
Fil: Bonetto, Carlos Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Limnología ; Argentina
Fil: Ronco, Alicia Estela. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Química. Centro de Investigaciones del Medio Ambiente; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description The impact of biotech-soybean technology on freshwater ecosystems is being evaluated in the Rolling Pampas region, Argentina. The effect of cypermethrin, the main soybean insecticide, on low-order temperate-stream fish populations was investigated for two consecutive crop cycles under field-use conditions in biotech-soybean production. Cypermethrin was unable to induce mortality or behavioral effects on any of the fish species resident in a first-order stream across a crop field (pulsed acute exposure scenario) sprayed according to conventional practices. No spatially or temporally dependent effects were observed on population parameters (size-class structure, abundance, survival, sex and immature/mature ratio, condition factor) of resident or caged Cnesterodon decemmaculatus after spraying or rainfall events, not even one year after, at the beginning of the next crop cycle. Although cypermethrin was “very highly toxic” to C. decemmaculatus in laboratory water (96 h-LC50 = 0.43 μg/l), its toxicity was reduced in filtered (78%) and unfiltered (92%) stream water. Changes in LC50 values were mainly correlated with the OC content of each water fraction (r2 = 0.99; p < 0.01; n = 9), showing that both DOC and TOC contributed proportionally to toxicity reduction. Protective effects of stream water (12-fold reduction LC50 values) explained the lack of effects on fish populations in the field, despite cypermethrin water concentrations after spraying reached values comparable with the 96 h-LC50. Therefore, cypermethrin under field-use conditions in transgenic-soybean production represents a low risk of acute exposure for fish populations inhabiting low-order temperate-streams rich in TOC. The relationship between LC50 and TOC could be a convenient way to improve risk estimation based on laboratory toxicity testing.
publishDate 2007
dc.date.none.fl_str_mv 2007-04-08
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/30735
Ronco, Alicia Estela; Bonetto, Carlos Alberto; Mugni, Hernan Diego; Díaz, Juan; Carriquiriborde, Pedro; Impact of cypermethrin on stream fish populations under field-use in biotech-soybean production; Pergamon-Elsevier Science Ltd.; Chemosphere; 68; 4; 8-4-2007; 613-621
0045-6535
CONICET Digital
CONICET
url http://hdl.handle.net/11336/30735
identifier_str_mv Ronco, Alicia Estela; Bonetto, Carlos Alberto; Mugni, Hernan Diego; Díaz, Juan; Carriquiriborde, Pedro; Impact of cypermethrin on stream fish populations under field-use in biotech-soybean production; Pergamon-Elsevier Science Ltd.; Chemosphere; 68; 4; 8-4-2007; 613-621
0045-6535
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.chemosphere.2007.02.051
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0045653507003050
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd.
publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd.
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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