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Mechanisms for longitudinal transport on early life stages in benthic-pelagic fishes within a tide-dominated estuary

2022Journal article Open access
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dc.contributor.authorMiró, J.M.
dc.contributor.authorMegina, C.
dc.contributor.authorGarel, Erwan
dc.contributor.authorDonázar-Aramendía, I.
dc.contributor.authorOlaya-Ponzone, L.
dc.contributor.authorGarcía-Gómez, J.C.
dc.date.accessioned2023-01-12T13:43:36Z
dc.date.available2023-01-12T13:43:36Z
dc.date.issued2022
dc.description.abstractMechanisms that control the longitudinal transport of larvae and juveniles in nursery grounds such as estuaries are reported for some species. However, the behaviour and population consequences of these mechanisms are still uncertain. In this study, we tested selective tidal-stream transport from the along-channel (up-and down-stream) and cross-channel (from one margin to the other) perspectives for two kinds of fish: estuarine-resident gobies (Pomatoschistus spp.) and marine estuarine-opportunistic anchovies (Engraulis encrasicolus). Three cruises were conducted in the lower Guadalquivir estuary, on the ebb and on the flood of spring tides in summer. Plankton samples were collected across a channel section, at three stations (one in the middle of the channel and two in adjacent shallower areas), near the surface and near the bottom simultaneously. In addition, multiple physico-chemical variables (temperature, turbidity, dissolved oxygen, pH, salinity, chlorophyll-a, along with wind and current direction and velocity) were measured to examine the different correlations used by the studied fish in their strategies. The benthic distribution of gobies indicated that they used flood currents near the bottom of lateral (shallow) areas to ingress into and remain in the estuary, temperature and/or dissolved oxygen being their main possible cues. On the contrary, the anchovies were more abundant near the surface, especially on the ebb tide, showing downstream advection, which was mainly influenced by salinity. However, the largest indi-vidual anchovies in the lateral/shallow zones suggested a behavioural ontogeny, which, together with wind induced transport, could contribute to their retention. This comparison also enhanced the knowledge of the habitat distribution of two species common and abundant in estuaries, anchovies and gobies.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.ecss.2022.108009pt_PT
dc.identifier.eissn1096-0015
dc.identifier.issn0272-7714
dc.identifier.urihttp://hdl.handle.net/10400.1/18810
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationCentre for Marine and Environmental Research
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/pt_PT
dc.subjectRecruitmentpt_PT
dc.subjectEarly life stagespt_PT
dc.subjectEstuarypt_PT
dc.subjectSelective tidal -stream transportpt_PT
dc.subjectAnchovypt_PT
dc.subjectGobypt_PT
dc.titleMechanisms for longitudinal transport on early life stages in benthic-pelagic fishes within a tide-dominated estuarypt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleCentre for Marine and Environmental Research
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FMAR%2F00350%2F2013/PT
oaire.citation.startPage108009pt_PT
oaire.citation.titleEstuarine, Coastal and Shelf Sciencept_PT
oaire.citation.volume276pt_PT
oaire.fundingStream6817 - DCRRNI ID
person.familyNameGarel
person.givenNameErwan
person.identifier.ciencia-id5D13-7EA7-6C6D
person.identifier.orcid0000-0002-4584-9759
person.identifier.ridN-9811-2014
person.identifier.scopus-author-id23491739700
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication7e619cba-3bfb-4964-bdf3-b8afd91a4a29
relation.isAuthorOfPublication.latestForDiscovery7e619cba-3bfb-4964-bdf3-b8afd91a4a29
relation.isProjectOfPublicationac84688e-8ae0-4c31-9d2f-ae46ee8bd2c7
relation.isProjectOfPublication.latestForDiscoveryac84688e-8ae0-4c31-9d2f-ae46ee8bd2c7

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