Spatial variation in the trophic category of fish assemblages in longitudinal stretches in a Neotropical reservoir

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dc.contributor.authorGarcia, Thiago Deruza
dc.contributor.authorQuirino, Barbara A.
dc.contributor.authorJarduli, Lucas R.
dc.contributor.authorCarvalho, Edmir D. [UNESP]
dc.contributor.authorVidotto-Magnoni, Ana Paula
dc.contributor.institutionUniversidade Estadual de Londrina (UEL)
dc.contributor.institutionUniversidade Estadual de Maringá (UEM)
dc.contributor.institutionCentro Universitário das Faculdades Integradas de Ourinhos
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.date.accessioned2023-07-29T14:01:21Z
dc.date.available2023-07-29T14:01:21Z
dc.date.issued2023-01-01
dc.description.abstractThe spatial gradients created after the installation of large reservoirs produce a great diversity of biotopes, which affects the distribution and structuring of aquatic communities, mainly fish. Thus, we hypothesized that the fishes living in the lotic stretch (river zone, closest to the natural environment) of the reservoir would have lower overlap and higher niche breadth than fishes living in the lentic stretch. Samples were collected in six sections (lentic and lotic) of the Chavantes Reservoir, middle Paranapanema River. A total of 1478 individuals distributed in 13 species were sampled in both stretches. Many resources were acquired by species, and we observed that nine species present significant differences when comparing the two stretches. Furthermore, only Schizodon nasutus and Steindachnerina insculpta showed interindividual variability. Despite the large number of food items exploited by the species, the vast majority showed preferential consumption for few food resources, evidenced by the low values of trophic niche breadth in both stretches. Furthermore, it was observed a trend towards specialization of all trophic categories indicated that the results found here, combined with a low degree of niche breadth of the species, offer a high trophic food variation among the fish species in the reservoir.en
dc.description.affiliationPrograma de Pós-Graduação em Ciências Biológicas Universidade Estadual de Londrina, Rodovia Celso Garcia Cid. PR, 445 Km 38°PR, PR
dc.description.affiliationUniversidade Estadual de Londrina Laboratório de Ecologia e Comportamento Animal, Rodovia Celso Garcia Cid. PR, 445 Km 38°PR, PR
dc.description.affiliationPrograma de Pós-Graduação em Ecologia de Ambientes Aquáticos Continentais Universidade Estadual de Maringá, Avenida Colombo, 5790, PR
dc.description.affiliationCentro Universitário das Faculdades Integradas de Ourinhos, Rodovia BR 153, Km 338+420m, Água do Cateto, SP
dc.description.affiliationUniversidade Estadual Paulista-Júlio de Mesquita Filho, Av. Prof. Mário Rubens Guimarães Montenegro, SP
dc.description.affiliationUnespUniversidade Estadual Paulista-Júlio de Mesquita Filho, Av. Prof. Mário Rubens Guimarães Montenegro, SP
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.identifierhttp://dx.doi.org/10.1590/0001-3765202320220173
dc.identifier.citationAnais da Academia Brasileira de Ciencias, v. 95, n. 1, 2023.
dc.identifier.doi10.1590/0001-3765202320220173
dc.identifier.issn1678-2690
dc.identifier.issn0001-3765
dc.identifier.scopus2-s2.0-85151574106
dc.identifier.urihttp://hdl.handle.net/11449/249060
dc.language.isoeng
dc.relation.ispartofAnais da Academia Brasileira de Ciencias
dc.sourceScopus
dc.subjectChavantes Reservoir
dc.subjectdam
dc.subjectguilds
dc.subjectParanapanema River
dc.subjecttrophic ecology
dc.titleSpatial variation in the trophic category of fish assemblages in longitudinal stretches in a Neotropical reservoiren
dc.typeArtigo
unesp.author.orcid0000-0001-6330-0068[1]
unesp.author.orcid0000-0002-7734-3795[2]
unesp.author.orcid0000-0002-5796-6434[3]
unesp.author.orcid0000-0003-1819-7019[5]
unesp.departmentGeografia - FCTEpt

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Ourinhos - FCTE - Faculdade de Ciências, Tecnologia e Educação