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Intra- and interspecific associations in two predatory reef fishes at a shallow seamount

2020-11Journal article Restricted access
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dc.contributor.authorGandra, Miguel
dc.contributor.authorAfonso, Pedro
dc.contributor.authorFontes, Jorge
dc.date.accessioned2021-06-18T16:25:48Z
dc.date.available2021-06-18T16:25:48Z
dc.date.issued2020-11
dc.description.abstractthe spatial dynamics of marine populations are shaped by habitat availability, environmental variability and individual interactions, particularly when multiple species share limited habitat such as patchy offshore reefs. the yellowmouth barracuda Sphyraena viridensis and the almaco jack Seriola rivoliana are the 2 most abundant bentho-pelagic reef predators in the Azores archipelago (central North Atlantic). They aggregate at shallow offshore seamounts, and largely share diet preferences, but very little is known about how habitat and resources are shared by these predators intra- and inter-specifically. Here we use long-term (over 3 yr) passive acoustic telemetry to investigate the patterns of activity, space use and associative behaviour at an isolated, small shallow seamount. By quantifying fine-scale spatiotemporal overlaps and performing null model randomization tests, we found evidence of non-random associations, mostly between conspecifics of both species, as well as shifts in diel and seasonal patterns of space occupancy. Both species were detected more often during spring, and appear to be more active during daytime, suggesting the absence of fine-scale temporal habitat partitioning. Additionally, we found evidence of size-dependent spatial behaviour in almaco jack, with similarly sized individuals co-occurring more often and larger specimens being more infrequently detected. This study quantitatively assesses individual associations using solely presence-absence data collected through passive acoustic telemetry, showing the potential of this approach in a broader application to a significant number of past and ongoing studies, even if many were not originally designed to study this important aspect of fish ecology.
dc.description.sponsorshipproject MARMACII INTERREG/05/MAC/4.2/A4; DRCT/0281M2.1.2/I/018/2011;
dc.identifier.doi10.3354/meps13501
dc.identifier.issn0171-8630
dc.identifier.urihttp://hdl.handle.net/10400.1/15674
dc.language.isoeng
dc.peerreviewedyes
dc.publisherInter-Research
dc.relationMARE - Marine and Environmental Sciences Centre
dc.relationTowards an ecological theory of deep diving in large pelagic fishes
dc.relationSEAMOUNT RESERVE EFFECTS, CONNECTIVITY AND ESSENTIAL JUVENILE HABITAT
dc.subjectYellowmouth barracuda
dc.subjectAlmaco jack
dc.subjectAcoustic telemetry
dc.subjectSpace use
dc.subjectAssociation dynamics
dc.subjectAggregations
dc.subjectSpatial overlap
dc.subject.otherEnvironmental Sciences & Ecology
dc.subject.otherMarine & Freshwater Biology
dc.subject.otherOceanography
dc.titleIntra- and interspecific associations in two predatory reef fishes at a shallow seamount
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleMARE - Marine and Environmental Sciences Centre
oaire.awardTitleTowards an ecological theory of deep diving in large pelagic fishes
oaire.awardTitleSEAMOUNT RESERVE EFFECTS, CONNECTIVITY AND ESSENTIAL JUVENILE HABITAT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876-PPCDTI/PTDC%2FMAR%2F108232%2F2008/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FMAR%2F04292%2F2013/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/Investigador FCT/IF%2F01640%2F2015%2FCP1299%2FCT0001/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/FARH/SFRH%2FBPD%2F66532%2F2009/PT
oaire.citation.endPage107
oaire.citation.startPage93
oaire.citation.titleMarine Ecology Progress Series
oaire.citation.volume654
oaire.fundingStream5876-PPCDTI
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStreamInvestigador FCT
oaire.fundingStreamFARH
person.familyNameGandra
person.givenNameMiguel
person.identifier.ciencia-id4F1A-6372-FA55
person.identifier.orcid0000-0003-1506-5141
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsrestrictedAccess
rcaap.typearticle
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