Sensitivity assessment of caligus rogercresseyi to emamectin benzoate in chile

The ectoparasitic copepod Caligus rogercresseyi, as distributed in the south of Chile, is the most important parasite of farmed salmonids because of the substantial, negative effects on survival, growth and increased susceptibility to infections, and this results in severe economic effects in seawat...

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Authors: Bravo-Segura, Sandra, Sevatdal-Sevatdal, Sigmund, Horsberg, T.
Format: article
Status:Published version
Publication Date:2008
Country:Chile
Language:English
OAI Identifier:oai:repositorio.anid.cl:10533/197860
Online Access:https://hdl.handle.net/10533/197860
Access Level:Open access
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spelling Horsberg, T.Horsberg, T.Sevatdal-Sevatdal, SigmundBravo-Segura, Sandra200810.1016/j.aquaculture.2008.06.011https://hdl.handle.net/10533/197860http://purl.org/coar/access_right/c_abf2Sensitivity assessment of caligus rogercresseyi to emamectin benzoate in chile127NLDAMSTERDAMBravo-Segura, SandraSevatdal-Sevatdal, SigmundHorsberg, T.Horsberg, T.2017-04-27T18:53:15Z2022-07-07T02:26:01Z2017-04-27T18:53:15Z2022-07-07T02:26:01Z2008The ectoparasitic copepod Caligus rogercresseyi, as distributed in the south of Chile, is the most important parasite of farmed salmonids because of the substantial, negative effects on survival, growth and increased susceptibility to infections, and this results in severe economic effects in seawater aquaculture. The sensitivity of C. rogercresseyi to emamectin benzoate was studied in 18 salmon farms belonging to four large aquaculture companies in Chile. Emamectin benzoate is the only medicinal product allowed by the Chilean official authority for Caligus control since 2000. Sensitivity values, recorded as EC50 (the emamectin concentration immobilizing 50% of the test subjects) in adult C. rogercresseyi were between 57 and 203 micrograms per liter (ppb) in the survey carried out in the summer season, and between 202 and 870 ppb for the winter season survey. The EC50 control value, obtained from naive Lepeophtheirus mugiloidis parasites, was 34 ppb. The results strongly indicate loss of sensitivity of C. rogercresseyi to emamectin benzoate at all sites analyzed. (C) 2008 Elsevier B.V. All rights reserved.This study was carried out as a part of the Project Fondef D011255, with financial support by Conicyt. The authors thank Claudia Lagos for her help in the processing data, Francisca Erranz, Pier Bassaletti, Veronica Pozo and Melinka Mancilla who collected the samples in the field and for the help with the bioassay work.75FONDEFsbravo@uach.clConicyt; [D011255]4FONDEF2820D04I1255D04I1255virtual::35471-1WOS:000260292000002WOS:0002602920000020044-8486https://hdl.handle.net/10533/197860ELSEVIER SCIENCE BVinstname: Conicytreponame: Repositorio Digital RI2.0instname: Conicytreponame: Repositorio Digital RI2.010.1016/j.aquaculture.2008.06.011info:eu-repo/grantAgreement/Fondef/D04I1255info:eu-repo/semantics/dataset/hdl.handle.net/10533/93477https://doi.org/10.1016/j.aquaculture.2008.06.011info:eu-repo/semantics/openAccessSensitivity assessment of caligus rogercresseyi to emamectin benzoate in chileAQUACULTUREAquacultureArticuloinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionengArticulohttps://hdl.handle.net/10533/197860FONDEFhttp://purl.org/coar/resource_type/c_2df8fbb10f985719-6ffd-4042-93fe-5f7130927885virtual::35471-10f985719-6ffd-4042-93fe-5f7130927885virtual::35471-110533/197860oai:repositorio.anid.cl:10533/1978602023-07-24 16:36:52.164https://repositorio.anid.clRepositorio ANIDaletelier@anid.cl
dc.title.none.fl_str_mv Sensitivity assessment of caligus rogercresseyi to emamectin benzoate in chile
dc.title.journal.none.fl_str_mv AQUACULTURE
dc.title.journalabbreviation.none.fl_str_mv Aquaculture
title Sensitivity assessment of caligus rogercresseyi to emamectin benzoate in chile
spellingShingle Sensitivity assessment of caligus rogercresseyi to emamectin benzoate in chile
Bravo-Segura, Sandra
title_short Sensitivity assessment of caligus rogercresseyi to emamectin benzoate in chile
title_full Sensitivity assessment of caligus rogercresseyi to emamectin benzoate in chile
title_fullStr Sensitivity assessment of caligus rogercresseyi to emamectin benzoate in chile
title_full_unstemmed Sensitivity assessment of caligus rogercresseyi to emamectin benzoate in chile
title_sort Sensitivity assessment of caligus rogercresseyi to emamectin benzoate in chile
dc.creator.none.fl_str_mv Bravo-Segura, Sandra
Sevatdal-Sevatdal, Sigmund
Horsberg, T.
Horsberg, T.
author Bravo-Segura, Sandra
author_facet Bravo-Segura, Sandra
Sevatdal-Sevatdal, Sigmund
Horsberg, T.
author_role author
author2 Sevatdal-Sevatdal, Sigmund
Horsberg, T.
author2_role author
author
description The ectoparasitic copepod Caligus rogercresseyi, as distributed in the south of Chile, is the most important parasite of farmed salmonids because of the substantial, negative effects on survival, growth and increased susceptibility to infections, and this results in severe economic effects in seawater aquaculture. The sensitivity of C. rogercresseyi to emamectin benzoate was studied in 18 salmon farms belonging to four large aquaculture companies in Chile. Emamectin benzoate is the only medicinal product allowed by the Chilean official authority for Caligus control since 2000. Sensitivity values, recorded as EC50 (the emamectin concentration immobilizing 50% of the test subjects) in adult C. rogercresseyi were between 57 and 203 micrograms per liter (ppb) in the survey carried out in the summer season, and between 202 and 870 ppb for the winter season survey. The EC50 control value, obtained from naive Lepeophtheirus mugiloidis parasites, was 34 ppb. The results strongly indicate loss of sensitivity of C. rogercresseyi to emamectin benzoate at all sites analyzed. (C) 2008 Elsevier B.V. All rights reserved.
publishDate 2008
dc.date.issued.none.fl_str_mv 2008
dc.date.accessioned.none.fl_str_mv 2017-04-27T18:53:15Z
2022-07-07T02:26:01Z
dc.date.available.none.fl_str_mv 2017-04-27T18:53:15Z
2022-07-07T02:26:01Z
dc.type.none.fl_str_mv Articulo
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dc.type.openaire.none.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.eissn.none.fl_str_mv 0
dc.identifier.folio.none.fl_str_mv D04I1255
D04I1255
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dc.identifier.isi.none.fl_str_mv WOS:000260292000002
dc.identifier.issn.none.fl_str_mv 0044-8486
dc.identifier.uri.none.fl_str_mv https://hdl.handle.net/10533/197860
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dc.language.*.fl_str_mv eng
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dc.relation.none.fl_str_mv instname: Conicyt
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instname: Conicyt
reponame: Repositorio Digital RI2.0
dc.relation.doi.none.fl_str_mv 10.1016/j.aquaculture.2008.06.011
dc.relation.projectid.none.fl_str_mv info:eu-repo/grantAgreement/Fondef/D04I1255
dc.relation.set.none.fl_str_mv info:eu-repo/semantics/dataset/hdl.handle.net/10533/93477
dc.relation.uri.none.fl_str_mv https://doi.org/10.1016/j.aquaculture.2008.06.011
dc.rights.driver.none.fl_str_mv info:eu-repo/semantics/openAccess
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dc.coverage.spatial.none.fl_str_mv AMSTERDAM
dc.publisher.none.fl_str_mv ELSEVIER SCIENCE BV
publisher.none.fl_str_mv ELSEVIER SCIENCE BV
repository.name.fl_str_mv Repositorio ANID
repository.mail.fl_str_mv aletelier@anid.cl
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