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Survival rates and physiological recovery responses in the lesser-spotted catshark (Scyliorhinus canicula) after bottom-trawling

2019-07Journal article Restricted
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dc.contributor.authorBarragan-Mendez, C.
dc.contributor.authorRuiz-Jarabo, I.
dc.contributor.authorFuentes, Juan
dc.contributor.authorMancera, J. M.
dc.contributor.authorSobrino, I.
dc.date.accessioned2020-07-24T10:52:05Z
dc.date.available2020-07-24T10:52:05Z
dc.date.issued2019-07
dc.description.abstractIn 2019, Europe will adopt a no-discards policy in fisheries. This entails the landing of captured species unless strong evidence is provided supporting their survival and recovery after fishing. Thus, research on this topic is gaining momentum. Bottom-trawling, as a non-selective fishing method, is characterized by a high proportion of discards including vulnerable key species, such as demersal sharks. Their survival may also depend on capture depth. By paralleling onboard and laboratory experiments with the small-spotted catshark, Scyliorhinus canicula, we offer a robust experimental design to assess the survival of discarded sharks. Catsharks were captured by bottom-trawling at two depths (shallow similar to 89 m and deep similar to 479 m). Blood samples were collected following trawl capture and analyzed for stress biomarkers (lactate, osmolality, phosphate, urea). During recovery in onboard tanks, behavior was video-recorded and fish were re-sampled after 24 h. A second experiment was conducted in laboratory facilities to simulate air-exposure after trawling and to analyze the physiological recovery. Our results showed that 95.7% of the animals survived 24 h after trawling. We confirmed that trawling elicited acute stress responses in catshark but that they managed to recover. This was demonstrated by lactate concentrations that were 2.6 mM upon capture, but recovered to assumed baselines after 24 h (0.2 mM). Non-invasive video monitoring revealed behavioral differences with depth, whereby those captured at 89 m depth required longer to recover than those captured at 479 m depth. Implementation of standardized survival studies by fishery managers can benefit from holistic physiological approaches, such as the one proposed here.
dc.description.sponsorshipEuropean UnionEuropean Union (EU)
dc.description.sponsorshipPADI Foundation [28467]
dc.description.sponsorshipMinisterio de Economia y CompetitividadSpanish Government [AGL2013-48835-C2-R, AGL2016-76069-C2-1-R]
dc.description.sponsorshipProject SUREDEPAR (Programa Pleamar, Ministerio de Agricultura y Pesca, Alimentacion y Medio Ambiente)
dc.description.sponsorshipMinistry of Science and Higher EducationMinistry of Science and Higher Education, Poland
dc.description.sponsorshipEuropean Social Funds through the Portuguese National Science Foundation (FCT)Portuguese Foundation for Science and Technology [PTDC/MAR-BIO/3034/2014]
dc.description.sponsorshipFCTPortuguese Foundation for Science and Technology [UID/Multi/04326/2013]
dc.identifier.doi10.1016/j.cbpa.2019.03.016
dc.identifier.issn1095-6433
dc.identifier.issn1531-4332
dc.identifier.urihttp://hdl.handle.net/10400.1/14313
dc.language.isoeng
dc.peerreviewedyes
dc.publisherElsevier
dc.subjectPort Jackson sharks
dc.subjectGill-net capture
dc.subjectStress-response
dc.subjectPostrelease survival
dc.subjectReflex impairment
dc.subjectElasmobranch
dc.subjectMortality
dc.subjectExposure
dc.subjectFish
dc.subjectTransport
dc.titleSurvival rates and physiological recovery responses in the lesser-spotted catshark (Scyliorhinus canicula) after bottom-trawling
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FMulti%2F04326%2F2013/PT
oaire.citation.endPage9
oaire.citation.startPage1
oaire.citation.titleComparative Biochemistry and Physiology - Part A: Molecular and Integrative Physiology
oaire.citation.volume233
oaire.fundingStream5876
person.familyNameRuiz-Jarabo
person.familyNameFuentes
person.givenNameIgnacio
person.givenNameJuan
person.identifier392998
person.identifier.ciencia-id421B-E196-2C33
person.identifier.orcid0000-0002-3918-0921
person.identifier.orcid0000-0003-0430-8734
person.identifier.scopus-author-id7201832526
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsrestrictedAccess
rcaap.typearticle
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relation.isAuthorOfPublicationd354b937-b18c-4ca5-a843-04a04269d60f
relation.isAuthorOfPublication.latestForDiscovery31cbd691-c8ea-4ad5-838e-bcf58a4f533f
relation.isProjectOfPublication868b4818-3efa-4edb-9202-c464d64fd38f
relation.isProjectOfPublication.latestForDiscovery868b4818-3efa-4edb-9202-c464d64fd38f

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