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Non-commercial invertebrate discards in an experimental trammel net fishery

2008Journal article Restricted access
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dc.contributor.authorGonçalves, J. M. S.
dc.contributor.authorBentes, L.
dc.contributor.authorCoelho, R.
dc.contributor.authorMonteiro, P.
dc.contributor.authorRibeiro, J.
dc.contributor.authorCorreia, C.
dc.contributor.authorLino, P. G.
dc.contributor.authorErzini, Karim
dc.date.accessioned2016-12-14T16:22:27Z
dc.date.available2016-12-14T16:22:27Z
dc.date.issued2008
dc.description.abstractNon-commercial invertebrate discards in an experimental trammel net fishery were studied in relation to selectivity of the gear, depth, soak time and season. Forty experimental fishing trials were carried out over a 1-year period with six combinations of small mesh (100, 120 and 140 mm) inner and large mesh (600 and 800 mm) outer panels. On average, 43.8 +/- 12.2 (SD) (individuals 1000 m(-1) of net) of non-commercial invertebrates were discarded, accounting for 48% and 65% of the total catch and total discards by numbers, respectively. Within non-commercial invertebrates discards, the six most abundant species by number were Phallusia mammillata (Cuvier) (27.5%), Cymbium olla (L.) (13.0%), Sphaerechinus granularis (Lamarck) (11.3%), Paracentrotus lividus (Lamarck) (10.9%), Astropartus mediterraneus (Risso) (8.2%) and Astropecten aranciacus (L.) (8.1%); Echinoderms (43.1%) particularly important. The highest and lowest discard ratios were found in autumn and winter, respectively. Discards generally decreased with depth, varied considerably in relation to soak time and were not related to mesh size combinations. Trammel nets seem to be the most important gear in terms of ecological impacts on benthic invertebrates compared with other coastal fishing gears and at the depths studied (15-60 m).
dc.identifier.doi10.1111/j.1365-2400.2008.00607.x
dc.identifier.issn0969-997X
dc.identifier.otherAUT: KER00534; JGO02808;
dc.identifier.urihttp://hdl.handle.net/10400.1/8812
dc.language.isoeng
dc.publisherWiley. Blackwell Publishing
dc.relation.isbasedonWOS:000255703900004
dc.subjectBiodiversity
dc.subjectBy-catch
dc.subjectDiscards
dc.subjectFisheries
dc.subjectGear selectivity
dc.subjectInvertebrates
dc.titleNon-commercial invertebrate discards in an experimental trammel net fishery
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage210
oaire.citation.issue3
oaire.citation.startPage199
oaire.citation.titleFisheries Management and Ecology
oaire.citation.volume15
person.familyNameGonçalves
person.familyNameBentes
person.familyNameCoelho
person.familyNameMonteiro
person.familyNameLino
person.familyNameErzini
person.givenNameJorge Manuel Santos
person.givenNameLuis
person.givenNameRui
person.givenNamePedro
person.givenNamePedro
person.givenNameKarim
person.identifier356846
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person.identifier.ridG-5206-2011
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person.identifier.ridM-5216-2013
person.identifier.scopus-author-id7103326116
person.identifier.scopus-author-id6603195176
person.identifier.scopus-author-id56257111100
person.identifier.scopus-author-id6701691255
person.identifier.scopus-author-id7004015948
rcaap.rightsrestrictedAccess
rcaap.typearticle
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