A pilot tagging program on southern rays bream (<i>Brama australis</i>): methodology and preliminary recaptures

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dc.contributor.authorWiff, Rodrigo
dc.contributor.authorFlores, Andres
dc.contributor.authorGacitua, Santiago
dc.contributor.authorDonovan, Carl R.
dc.contributor.authorCanales, T. Mariella
dc.contributor.authorAhumada, Mauricio
dc.contributor.authorQueirolo, Dante
dc.date.accessioned2025-01-20T20:15:50Z
dc.date.available2025-01-20T20:15:50Z
dc.date.issued2023
dc.description.abstractThe southern rays bream (Brama australis) is a highly migratory, epi-mesopelagic species supporting an important artisanal fishery off central-southern Chile. Despite its importance, several questions exist about this species's demography and migratory routes. The first step in understanding the migratory behavior of B. australis is to test the feasibility of a conventional tagging program, a standard mark-recapture method, to infer migration in fish. Between February 2020 and December 2021, conventional tagging was conducted during 21 fishing trips on board artisanal vessels off Lebu harbor ( Biobio Region, Chile) using gillnets, longlines, and handlines. Three thousand nine hundred forty-six individuals of B. australis between 30 and 55 cm fork length were tagged using external T-anchor bar labels (commonly known as "spaghetti"). Approximately 100 and 200 fish were tagged per fishing trip using longlines and gillnets, respectively. The size distribution of the tagged individuals was consistent with those retained in the catch, with 90% of tagged fish being longer than the fork length at 50% maturity. Eight tags have been recovered off the coast of Lebu up to May 2022. With times at liberty between 50 and 537 days. These preliminary recaptures are also analyzed in the context of the conceptual model for demography and migration proposed for this species in Chile. The main conclusion of this research is that a conventional tagging program is feasible for B. australis in Chile.
dc.fuente.origenWOS
dc.identifier.doi10.3856/vol51-issue1-fulltext-2950
dc.identifier.issn0718-560X
dc.identifier.urihttps://doi.org/10.3856/vol51-issue1-fulltext-2950
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/92287
dc.identifier.wosidWOS:000961952100004
dc.issue.numero1
dc.language.isoen
dc.pagina.final46
dc.pagina.inicio34
dc.revistaLatin american journal of aquatic research
dc.rightsacceso restringido
dc.subjectBrama australis
dc.subjectsouthern rays bream
dc.subjecttagging program
dc.subjectartisanal fishery
dc.subjectmigratory fish
dc.subjectSouth Pacific
dc.subject.ods14 Life Below Water
dc.subject.ods15 Life on Land
dc.subject.odspa14 Vida submarina
dc.subject.odspa15 Vida de ecosistemas terrestres
dc.titleA pilot tagging program on southern rays bream (<i>Brama australis</i>): methodology and preliminary recaptures
dc.typeartículo
dc.volumen51
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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