Regulation of fish stocks without stock-recruitment relationships: The case of small pelagic fish

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dc.contributor.authorMariella Canales, T.
dc.contributor.authorDelius, Gustav W.
dc.contributor.authorLaw, Richard
dc.date.accessioned2025-01-23T19:48:51Z
dc.date.available2025-01-23T19:48:51Z
dc.date.issued2020
dc.description.abstractSmall pelagic fish lack clear stock-recruitment relationships. This is a problem because such relationships are taken to be the primary descriptors of density dependence, responsible for regulating population density. In this paper, we show that small pelagic fish species, anchovy (Engraulisspp., Engraulidae), living in a stochastic environment, can be strongly regulated without a stock-recruitment relationship emerging. This is done through numerical analysis of a size-spectrum model, in which fish grow by eating and die in part from being eaten, with the result that birth, growth and death are all density-dependent. The model includes cannibalism, and growth-dependent larval mortality, both of which have been suggested as regulatory mechanisms in anchovy, together with growth and reproduction later in life. Despite the lack of a clear stock-recruitment relationship in the presence of stochasticity, signals of density dependence in the vital rates remain clear, suggesting that they might prove to be better indicators of density dependence than stock-recruitment relationships in small pelagic fish.
dc.fuente.origenWOS
dc.identifier.doi10.1111/faf.12465
dc.identifier.eissn1467-2979
dc.identifier.issn1467-2960
dc.identifier.urihttps://doi.org/10.1111/faf.12465
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/100463
dc.identifier.wosidWOS:000564931600001
dc.issue.numero5
dc.language.isoen
dc.pagina.final871
dc.pagina.inicio857
dc.revistaFish and fisheries
dc.rightsacceso restringido
dc.subjectanchovy
dc.subjectdensity dependence
dc.subjectgrowth
dc.subjectplankton
dc.subjectsize-spectrum
dc.subjectstochasticity
dc.subject.ods15 Life on Land
dc.subject.ods14 Life Below Water
dc.subject.odspa15 Vida de ecosistemas terrestres
dc.subject.odspa14 Vida submarina
dc.titleRegulation of fish stocks without stock-recruitment relationships: The case of small pelagic fish
dc.typeartículo
dc.volumen21
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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