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Food availability and the feeding ecology of ichthyofauna of a Ria Formosa (South Portugal) water reservoir

2003-08Journal article Restricted access
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dc.contributor.authorGamito, Sofia
dc.contributor.authorPires, A.
dc.contributor.authorPita, C.
dc.contributor.authorErzini, Karim
dc.date.accessioned2016-12-23T11:18:17Z
dc.date.available2016-12-23T11:18:17Z
dc.date.issued2003-08
dc.description.abstractThe feeding habits of several fish species in a water reservoir of the Ria Formosa, Portugal, that has similar ecological characteristics to the outside tidal channels, were studied and compared with food availability. The gilthead seabream (Sparus aurata), the most abundant fish species, mainly selected gastropods and bivalves, although occasionally fish and small crustaceans such as tanaids, ostracods, and cumaceans were also selected. Polychaetes, although abundant in the environment, were not particularly selected by any of the fish species studied. The diets of all the species studied were characterized by a large variety of prey, allowing them to survive in environments of low diversity and poor stability, such as coastal lagoons. These fish are largely benthic feeders, essentially eating the epimacroinvertebrates and endomacroinvertebrates and, occasionally, fish. Diplodus vulgaris and Diplodus annularis preferentially selected gastropods and small crustaceans. Spondyliosoma cantharus generally preyed on crustaceans, including the highly mobile epifauna, the mysids, and decapods. Halobatrachus didactylus and Anguilla anguilla, had very diversified diets that included fish. Mullus barbatus were found to have selected all groups of crustaceans and also bivalves. Wrasses, gobies, and Diplodus sargus, all small-sized fish, singled out small crustaceans, gastropods, and bivalves. The Sparids were the least specialized predators, with broader niches than the other species. They preferentially selected molluscs, which were abundant in the environment. A large overlap of diets was observed and competition may be important when fish biomass is high.
dc.identifier.doi10.1007/BF02803352
dc.identifier.issn0160-8347
dc.identifier.otherAUT: SGA00408; KER00534;
dc.identifier.urihttp://hdl.handle.net/10400.1/8882
dc.language.isoeng
dc.peerreviewedyes
dc.publisherChesapeake Biological Laboratory; Estuarine Research Federation, Springer Verlag
dc.relation.isbasedonWOS:000185936000012
dc.titleFood availability and the feeding ecology of ichthyofauna of a Ria Formosa (South Portugal) water reservoir
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage948
oaire.citation.issue4A
oaire.citation.startPage938
oaire.citation.titleEstuaries
oaire.citation.volume26
person.familyNameGamito
person.familyNameErzini
person.givenNameSofia
person.givenNameKarim
person.identifier534295
person.identifier.ciencia-id751A-DA6E-C7A2
person.identifier.ciencia-idD917-7133-341A
person.identifier.orcid0000-0001-9700-7388
person.identifier.orcid0000-0002-1411-0126
person.identifier.ridM-3476-2013
person.identifier.ridM-5216-2013
person.identifier.scopus-author-id56003796400
person.identifier.scopus-author-id7004015948
rcaap.rightsrestrictedAccess
rcaap.typearticle
relation.isAuthorOfPublication88ad20ee-e1ec-447d-b1d2-e63f94638ac9
relation.isAuthorOfPublicatione20f0e2d-3085-4c37-9e98-260dc9faddea
relation.isAuthorOfPublication.latestForDiscoverye20f0e2d-3085-4c37-9e98-260dc9faddea

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