Paralytic shellfish toxin profiles in mussel, cockle and razor shell under post-bloom natural conditions: evidence of higher biotransformation in razor shells and cockles

Detalhes bibliográficos
Autor(a) principal: Botelho, Maria João
Data de Publicação: 2020
Outros Autores: Marques, Filipa, Freitas, Rosa, Pires, Adília, Pereira, Eduarda, Vale, Carlos
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10773/27465
Resumo: Concentrations of the paralytic shellfish toxins GTX6, C1+2, GTX5, C3+4, dcSTX, dcNEO and dcGTX2+3 were determined by LC-FLD in composite samples of whole soft tissues of mussels (Mytilus galloprovincialis), cockles (Cerastoderma edule) and razor shells (Solen marginatus) after exposure to a Gymnodinium catenatum bloom. Specimens were harvested weekly during three months under natural depuration conditions in the Mira branch of Aveiro lagoon, Portugal. Under the decline of G. catenatum cell densities, elimination or transformation of the uptake toxins associated with the ingestion of toxic cells differed among the surveyed species. Ratio between the toxins dcSTX plus dcGTX2+3 plus dcNEO and toxins GTX6 plus GTX5 plus C1+2 plus C3+4 was used to illustrate the biotransformation occurring in the bivalves. Enhancement of the ratios was observed for razor shells and cockles seven weeks after the peak of the algal bloom. Most likely it reflects more intense biotransformation in razor shells and cockles than in mussels. Conversion into toxins of higher toxicity may prolong the bivalve toxicity. These results show the complexity of toxin elimination in bivalves under post-bloom conditions and emphasize the pertinence of monitoring programs of bivalve toxicity in order to protect human health.
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spelling Paralytic shellfish toxin profiles in mussel, cockle and razor shell under post-bloom natural conditions: evidence of higher biotransformation in razor shells and cocklesParalytic shellfish toxinsBiotransformationMytilus galloprovincialisCerastoderma eduleSolen marginatusConcentrations of the paralytic shellfish toxins GTX6, C1+2, GTX5, C3+4, dcSTX, dcNEO and dcGTX2+3 were determined by LC-FLD in composite samples of whole soft tissues of mussels (Mytilus galloprovincialis), cockles (Cerastoderma edule) and razor shells (Solen marginatus) after exposure to a Gymnodinium catenatum bloom. Specimens were harvested weekly during three months under natural depuration conditions in the Mira branch of Aveiro lagoon, Portugal. Under the decline of G. catenatum cell densities, elimination or transformation of the uptake toxins associated with the ingestion of toxic cells differed among the surveyed species. Ratio between the toxins dcSTX plus dcGTX2+3 plus dcNEO and toxins GTX6 plus GTX5 plus C1+2 plus C3+4 was used to illustrate the biotransformation occurring in the bivalves. Enhancement of the ratios was observed for razor shells and cockles seven weeks after the peak of the algal bloom. Most likely it reflects more intense biotransformation in razor shells and cockles than in mussels. Conversion into toxins of higher toxicity may prolong the bivalve toxicity. These results show the complexity of toxin elimination in bivalves under post-bloom conditions and emphasize the pertinence of monitoring programs of bivalve toxicity in order to protect human health.Elsevier2020-022020-02-01T00:00:00Z2021-03-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10773/27465eng0141-113610.1016/j.marenvres.2019.104839Botelho, Maria JoãoMarques, FilipaFreitas, RosaPires, AdíliaPereira, EduardaVale, Carlosinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-02-22T11:53:10Zoai:ria.ua.pt:10773/27465Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:00:13.513558Repositório 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 Paralytic shellfish toxin profiles in mussel, cockle and razor shell under post-bloom natural conditions: evidence of higher biotransformation in razor shells and cockles
title Paralytic shellfish toxin profiles in mussel, cockle and razor shell under post-bloom natural conditions: evidence of higher biotransformation in razor shells and cockles
spellingShingle Paralytic shellfish toxin profiles in mussel, cockle and razor shell under post-bloom natural conditions: evidence of higher biotransformation in razor shells and cockles
Botelho, Maria João
Paralytic shellfish toxins
Biotransformation
Mytilus galloprovincialis
Cerastoderma edule
Solen marginatus
title_short Paralytic shellfish toxin profiles in mussel, cockle and razor shell under post-bloom natural conditions: evidence of higher biotransformation in razor shells and cockles
title_full Paralytic shellfish toxin profiles in mussel, cockle and razor shell under post-bloom natural conditions: evidence of higher biotransformation in razor shells and cockles
title_fullStr Paralytic shellfish toxin profiles in mussel, cockle and razor shell under post-bloom natural conditions: evidence of higher biotransformation in razor shells and cockles
title_full_unstemmed Paralytic shellfish toxin profiles in mussel, cockle and razor shell under post-bloom natural conditions: evidence of higher biotransformation in razor shells and cockles
title_sort Paralytic shellfish toxin profiles in mussel, cockle and razor shell under post-bloom natural conditions: evidence of higher biotransformation in razor shells and cockles
author Botelho, Maria João
author_facet Botelho, Maria João
Marques, Filipa
Freitas, Rosa
Pires, Adília
Pereira, Eduarda
Vale, Carlos
author_role author
author2 Marques, Filipa
Freitas, Rosa
Pires, Adília
Pereira, Eduarda
Vale, Carlos
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Botelho, Maria João
Marques, Filipa
Freitas, Rosa
Pires, Adília
Pereira, Eduarda
Vale, Carlos
dc.subject.por.fl_str_mv Paralytic shellfish toxins
Biotransformation
Mytilus galloprovincialis
Cerastoderma edule
Solen marginatus
topic Paralytic shellfish toxins
Biotransformation
Mytilus galloprovincialis
Cerastoderma edule
Solen marginatus
description Concentrations of the paralytic shellfish toxins GTX6, C1+2, GTX5, C3+4, dcSTX, dcNEO and dcGTX2+3 were determined by LC-FLD in composite samples of whole soft tissues of mussels (Mytilus galloprovincialis), cockles (Cerastoderma edule) and razor shells (Solen marginatus) after exposure to a Gymnodinium catenatum bloom. Specimens were harvested weekly during three months under natural depuration conditions in the Mira branch of Aveiro lagoon, Portugal. Under the decline of G. catenatum cell densities, elimination or transformation of the uptake toxins associated with the ingestion of toxic cells differed among the surveyed species. Ratio between the toxins dcSTX plus dcGTX2+3 plus dcNEO and toxins GTX6 plus GTX5 plus C1+2 plus C3+4 was used to illustrate the biotransformation occurring in the bivalves. Enhancement of the ratios was observed for razor shells and cockles seven weeks after the peak of the algal bloom. Most likely it reflects more intense biotransformation in razor shells and cockles than in mussels. Conversion into toxins of higher toxicity may prolong the bivalve toxicity. These results show the complexity of toxin elimination in bivalves under post-bloom conditions and emphasize the pertinence of monitoring programs of bivalve toxicity in order to protect human health.
publishDate 2020
dc.date.none.fl_str_mv 2020-02
2020-02-01T00:00:00Z
2021-03-01T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10773/27465
url http://hdl.handle.net/10773/27465
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 0141-1136
10.1016/j.marenvres.2019.104839
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
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dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
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reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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