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The diet of two opportunistic seabirds (Caspian and Royal Terns) confirms the importance of Sardinella spp. in West African coastal food webs

2019Journal article Restricted access
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dc.contributor.authorCorreia, Edna
dc.contributor.authorGranadeiro, J. P.
dc.contributor.authorRegalla, Aissa Said
dc.contributor.authorMonteiro, Hamilton
dc.contributor.authorCatry, Paulo
dc.date.accessioned2019-04-05T19:42:33Z
dc.date.available2019-04-05T19:42:33Z
dc.date.issued2019
dc.description.abstractDespite their importance for fisheries, livelihoods and biodiversity conservation, shelf ecosystems in West Africa are poorly known. Caspian Tern (Hydroprogne caspia) and Royal Tern (Thalasseus maximus) are two of the most numerous and widespread nesting seabirds in the region, and an understanding of the diet of these opportunistic predators may throw light on important elements of the local food webs. This study describes and compares the prey consumed by these two species in Guinea and Guinea-Bissau collected from 2013 to 2015. Our results show that both tern species feed mostly on pelagic fish from which Clupeidae (mostly Sardinella maderensis) dominated the diet at all locations and seasons. Pristigasteridae and Polynemidae were the next most frequent prey in the diet of these two tern species. Our findings strengthen the recent suggestion of a wasp-waist ecosystem for our study area, with sardinella as the key prey for several predators, including seabirds and pelagic fishes, and potentially influencing their distribution and abundance. Moreover, our results show a higher diversity in the diet of the Caspian Tern, with this species preying on a greater range of benthopelagic fishes (e.g. Gerreidae; Mugilidae) which fits with observations of inshore foraging that seems rarer in Royal Terns. We further show that prey identification based only on otoliths from pellets, as opposed to the use of all hard structures (e.g. otoliths, vertebrae, scales), seriously underestimates the occurrence of species with fragile and small otoliths, including clupeids and other small pelagics.pt_PT
dc.description.sponsorshipIBAP (Guinea-Bissau); Fundação para a Ciência e a Tecnologia - FCT; CESAM; FEDER; MAVA Foundationpt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationMarine Biology Research, 14(9-10), 961-972 Doi: 10.1080/17451000.2019.1572193pt_PT
dc.identifier.doiMarine Biology Researchpt_PT
dc.identifier.issn17451000
dc.identifier.urihttp://hdl.handle.net/10400.12/6984
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherTaylor & Francispt_PT
dc.relationPD/BD/52594/2014,UID/AMB/50017pt_PT
dc.relationPROGRAMA DOUTORAL EM BIOLOGIA E ECOLOGIA DAS ALTERAÇÕES GLOBAIS - PROGRAMA DE TRABALHOS A DEFINIR ATÉ AO FINAL DO 1º ANO CONFORME FUNCIONAMENTO DO PROGRAMA DOUTORAL
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/pt_PT
dc.subjectHydroprogne caspiapt_PT
dc.subjectThalasseus maximus albididorsalispt_PT
dc.subjectBijagóspt_PT
dc.subjectArchipelagopt_PT
dc.subjectSardinella maderensispt_PT
dc.titleThe diet of two opportunistic seabirds (Caspian and Royal Terns) confirms the importance of Sardinella spp. in West African coastal food webspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitlePROGRAMA DOUTORAL EM BIOLOGIA E ECOLOGIA DAS ALTERAÇÕES GLOBAIS - PROGRAMA DE TRABALHOS A DEFINIR ATÉ AO FINAL DO 1º ANO CONFORME FUNCIONAMENTO DO PROGRAMA DOUTORAL
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FMAR%2F04292%2F2013/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FAMB%2F50017%2F2013/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/FARH/PD%2FBD%2F52594%2F2014/PT
oaire.citation.conferencePlaceUnited Kingdompt_PT
oaire.citation.endPage972pt_PT
oaire.citation.issue9-10pt_PT
oaire.citation.startPage961pt_PT
oaire.citation.titleMarine Biology Researchpt_PT
oaire.citation.volume14pt_PT
oaire.fundingStream5876
oaire.fundingStream5876
oaire.fundingStreamFARH
person.familyNameCorreia
person.familyNamePedro Granadeiro
person.familyNameCatry
person.givenNameEdna
person.givenNameJosé
person.givenNamePaulo
person.identifier470348
person.identifierSlxtKi4AAAAJ
person.identifier.ciencia-idAC17-6557-92CE
person.identifier.ciencia-id3114-23EB-2E89
person.identifier.ciencia-idEF1A-6A4A-013A
person.identifier.orcid0000-0003-3893-1700
person.identifier.orcid0000-0002-7207-3474
person.identifier.orcid0000-0003-3000-0522
person.identifier.ridD-8766-2019
person.identifier.ridI-5408-2013
person.identifier.scopus-author-id57188749015
person.identifier.scopus-author-id6603758245
person.identifier.scopus-author-id7003725276
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
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
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