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Impaired fish swimming performance following dietary exposure to the marine phycotoxin okadaic acid

2020-05Artigo científico Acesso restrito
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dc.contributor.authorCorriere, Mauro
dc.contributor.authorBaptista, Miguel
dc.contributor.authorPaula, Jose R.
dc.contributor.authorRepolho, Tiago
dc.contributor.authorRosa, Rui
dc.contributor.authorReis Costa, Pedro
dc.contributor.authorSoliño, Lucia
dc.date.accessioned2021-06-24T11:35:41Z
dc.date.available2021-06-24T11:35:41Z
dc.date.issued2020-05
dc.description.abstractFish are frequently exposed to harmful algal blooms (HAB) and to related toxins. However, the biological effects of okadaic acid (OA), the most abundant and frequent HAB-toxin in Europe, South America and Asia, have been poorly investigated. In this study, fish swimming performance and metabolic rates were investigated in juveniles of Zebra seabream (Diplodus cervinus) exposed to OA-group toxins via dietary route, during three days. Fish fed on contaminated food accumulated up to 455.5 mu g OA equiv. Kg(-1). Significant lower mean critical swimming speed (Ucrit) were observed in fish orally exposed to OA (and its related isomer dinophysistoxin-1, DTX-1) than fish feeding on non-toxic diet. A tendency to higher demands of oxygen consumption was also recorded in OA-exposed fish at higher current velocities. This study indicates that fish may not be affected by OA-group toxins under basal conditions, but suggests a decrease in fitness linked to a reduction in swimming performance of fish exposed to OA under increased stimulus. OA and related toxins are suggested to have a cryptic effect on swimming performance that may be enhanced when fish deals with multiple stressors. Considering that a reduction in swimming performance may have impact on critical activities, such as foraging and escaping from predators, this study highlights the ecological risk associated with dinoflagellate toxic blooms, biotoxins food web transfer and fish contamination.
dc.description.sponsorshipPortuguese Foundation for Science and Technology (FCT)Portuguese Foundation for Science and Technology [PTDC/CTA-AMB/30557/2017, PTDC/BIA-BMA/28317/2017]
dc.description.sponsorshipFEDEREuropean Commission
dc.description.sponsorshipFCTPortuguese Foundation for Science and TechnologyEuropean Commission [UID/Multi/04326/2019]
dc.description.sponsorshipEuropean Regional Development Fund, European Union, through Operational Program Mar 2020, Portugal 2020 [PTDC/CTA-AMB/30557/2017]
dc.description.sponsorshipSNMB-INOV
dc.description.sponsorshipOperational Program Mar 2020, Portugal 2020
dc.description.versioninfo:eu-repo/semantics/publishedVersion
dc.identifier.doi10.1016/j.toxicon.2020.02.022
dc.identifier.issn0041-0101
dc.identifier.urihttp://hdl.handle.net/10400.1/16511
dc.language.isoeng
dc.peerreviewedyes
dc.publisherElsevier
dc.subjectHarmful algal blooms
dc.subjectDinophysistoxins
dc.subjectFish metabolism
dc.subjectCritical swimming speed
dc.subjectSwim tunnel
dc.subject.otherPharmacology & Pharmacy
dc.titleImpaired fish swimming performance following dietary exposure to the marine phycotoxin okadaic acid
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage59
oaire.citation.startPage53
oaire.citation.titleToxicon
oaire.citation.volume179
person.familyNameReis Costa
person.familyNameSoliño
person.givenNamePedro
person.givenNameLucia
person.identifier600820
person.identifier.ciencia-idC911-9715-E547
person.identifier.ciencia-id2F12-68AC-8F6C
person.identifier.orcid0000-0001-6083-470X
person.identifier.orcid0000-0001-8356-5688
person.identifier.ridN-1908-2019
person.identifier.scopus-author-id7201895802
rcaap.rightsrestrictedAccess
rcaap.typearticle
relation.isAuthorOfPublication24ad7119-d61f-4bdb-a5d5-9bd6e2c37312
relation.isAuthorOfPublication27e1ebce-5931-49c1-9d91-53c69d8e255b
relation.isAuthorOfPublication.latestForDiscovery27e1ebce-5931-49c1-9d91-53c69d8e255b

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