Dietary composition of myctophid larvae off Western Australia

Special issue: The Second International Indian Ocean Expedition (IIOE-2): Motivating New Exploration in a Poorly Understood Ocean Basin Volume 3).-- 14 pages, 7 figures, 3 tables, supplementary data https://doi.org/10.1016/j.dsr2.2020.104841

Detalles Bibliográficos
Autores: Bernal, Ainhoa, Olivar, M. Pilar, Beckley, Lynnath E.
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2020
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/222378
Acceso en línea:http://hdl.handle.net/10261/222378
Access Level:acceso abierto
Palabra clave:Feeding behaviour
Ichthyoplankton
Marine fish larvae
Myctophidae
Indian Ocean
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spelling Dietary composition of myctophid larvae off Western AustraliaBernal, AinhoaOlivar, M. PilarBeckley, Lynnath E.Feeding behaviourIchthyoplanktonMarine fish larvaeMyctophidaeIndian OceanSpecial issue: The Second International Indian Ocean Expedition (IIOE-2): Motivating New Exploration in a Poorly Understood Ocean Basin Volume 3).-- 14 pages, 7 figures, 3 tables, supplementary data https://doi.org/10.1016/j.dsr2.2020.104841Mesopelagic fishes of the southeastern Indian Ocean are represented by a high number of lanternfish species (Myctophidae). The horizontal distribution patterns of their larvae have been previously studied; however, research on larval feeding habits is non-existent. The goal of this study was to describe the diet and trophic-based strategies of the most abundant myctophid larvae off Western Australia through stomach content analysis. Samples were collected in autumn 2007 off southwestern Australia when this oligotrophic area was under the influence of the seasonal Leeuwin Current, and in autumn 2010 on the tropical continental shelf of northwestern Australia. The species investigated during these periods were Benthosema fibulatum, B. pterotum, B. suborbitale, Dasyscopelus asper, Diaphus “deep” and “slender” morphotypes, Hygophum hygomii, Lampadena luminosa, Lampanyctus alatus, Lampanyctus spp. and Myctophum sp. Generally, myctophid larvae showed a diurnal feeding pattern. Only postflexion stages in L. alatus, L. luminosa, B. pterotum, Diaphus “slender”, and Myctophum sp. preyed at dawn or during the night. The highest feeding incidence was found in L. luminosa and the Diaphus “deep” morphotype, while the lowest, in H. hygomii. Generally, larvae were zooplankton feeders with nauplii and copepodites being the most abundant dietary groups, except for B. suborbitale and Myctophum sp. where the small non-calanoid genus Oncaea was dominant. Soft organisms such as appendicularians were frequent items in most fish diets throughout their entire larval phase, and highly abundant in Diaphus “deep” morphotype. The wide prey-size spectrum indicates that the majority of the fish species were not size-specific feeders for most of their larval life. Nevertheless, B. suborbitale, B. fibulatum, and L. alatus preferred larger prey, ignoring the smaller items as they grew. Larval feeding patterns of similar genera from other ecosystems are discussed and compared with those in Western AustraliaAinhoa Bernal was the recipient of a PhD scholarship associated with the project CTM 2008-04489-C03-02 awarded by the Spanish Ministry of Science and InnovationWith the funding support of the ‘Severo Ochoa Centre of Excellence’ accreditation (CEX2019-000928-S), of the Spanish Research Agency (AEI)Pergamon PressMinisterio de Ciencia e Innovación (España)Agencia Estatal de Investigación (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2020202020202020info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/222378reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttps://doi.org/10.1016/j.dsr2.2020.104841Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2223782026-05-22T06:33:51Z
dc.title.none.fl_str_mv Dietary composition of myctophid larvae off Western Australia
title Dietary composition of myctophid larvae off Western Australia
spellingShingle Dietary composition of myctophid larvae off Western Australia
Bernal, Ainhoa
Feeding behaviour
Ichthyoplankton
Marine fish larvae
Myctophidae
Indian Ocean
title_short Dietary composition of myctophid larvae off Western Australia
title_full Dietary composition of myctophid larvae off Western Australia
title_fullStr Dietary composition of myctophid larvae off Western Australia
title_full_unstemmed Dietary composition of myctophid larvae off Western Australia
title_sort Dietary composition of myctophid larvae off Western Australia
dc.creator.none.fl_str_mv Bernal, Ainhoa
Olivar, M. Pilar
Beckley, Lynnath E.
author Bernal, Ainhoa
author_facet Bernal, Ainhoa
Olivar, M. Pilar
Beckley, Lynnath E.
author_role author
author2 Olivar, M. Pilar
Beckley, Lynnath E.
author2_role author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia e Innovación (España)
Agencia Estatal de Investigación (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Feeding behaviour
Ichthyoplankton
Marine fish larvae
Myctophidae
Indian Ocean
topic Feeding behaviour
Ichthyoplankton
Marine fish larvae
Myctophidae
Indian Ocean
description Special issue: The Second International Indian Ocean Expedition (IIOE-2): Motivating New Exploration in a Poorly Understood Ocean Basin Volume 3).-- 14 pages, 7 figures, 3 tables, supplementary data https://doi.org/10.1016/j.dsr2.2020.104841
publishDate 2020
dc.date.none.fl_str_mv 2020
2020
2020
2020
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/222378
url http://hdl.handle.net/10261/222378
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv https://doi.org/10.1016/j.dsr2.2020.104841
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Pergamon Press
publisher.none.fl_str_mv Pergamon Press
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,812455

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