caa a22 4500 606227814 CHVBK 20210128101200.0 cr unu---uuuuu 210128e20150401xx s 000 0 eng 10.1007/s10641-014-0343-7 doi (NATIONALLICENCE)springer-10.1007/s10641-014-0343-7 Carbon from littoral producers is the major source of energy for bottom-feeding fish in a tropical floodplain [Elektronische Daten] [Célia Lopes, Gislaine Manetta, Bruno Figueiredo, Luiz Martinelli, Evanilde Benedito] Bottom-feeding fish show great variation in trophic morphology, resulting in a wide array of feeding habits exploiting from periphyton in littoral habitats to ingesting larger amounts of litterfall from terrestrial habitats. Nevertheless, it has been proposed that, in temperate aquatic systems, the energetic demands from bottom-feeding fish are supplied by primary production from phytoplankton in pelagic habitats. Thus, we aimed to determine which of several energy sources support bottom-feeding fish in tropical aquatic systems, where primary producers are diverse. We performed samplings in the Paraná River floodplain from primary producers in littoral (periphyton), pelagic (phytoplankton) and terrestrial habitats (riparian vegetation). Using simultaneous signatures of C and N isotope ratios, we analysed the possible origin of available energy in muscles of nine different bottom-feeding fish species. We verified that seven of the nine fish species had the highest contribution of carbon from a littoral source compared to other energy sources, independent of trophic category. The importance of periphyton may be related to the high abundance of substrates (such as macrophytes) that are available in the littoral zone of tropical aquatic systems. Finally, we suggest that the actual carbon dynamics among bottom-feeding fish and primary producers is species-specific, varying within the same trophic guild, and therefore, it is possible to refute the assumption that each trophic guild is specialised for a distinct carbon source. Springer Science+Business Media Dordrecht, 2014 Benthic fish nationallicence Energy sources nationallicence Habitat coupling nationallicence Stable isotopes nationallicence Lopes Célia Fundação Dracenense de Educação e Cultura, Avenida Alcides Chacon Couto 395, CEP 17900-000, Dracena, SP, Brazil aut Manetta Gislaine Núcleo de Pesquisa em Limnologia, Ictiologia e Aquicultura (Nupélia), Universidade Estadual de Maringá (UEM), Avenida Colombo, 5790, Bloco H-90, CEP 87020-900, Maringá, PR, Brazil aut Figueiredo Bruno Núcleo de Pesquisa em Limnologia, Ictiologia e Aquicultura (Nupélia), Universidade Estadual de Maringá (UEM), Avenida Colombo, 5790, Bloco H-90, CEP 87020-900, Maringá, PR, Brazil aut Martinelli Luiz Centro de Energia Nuclear na Agricultura (CENA), Universidade de São Paulo (USP), Avenida Centenário, 303, CEP 13416-000, Piracicaba, SP, Brazil aut Benedito Evanilde Núcleo de Pesquisa em Limnologia, Ictiologia e Aquicultura (Nupélia), Universidade Estadual de Maringá (UEM), Avenida Colombo, 5790, Bloco H-90, CEP 87020-900, Maringá, PR, Brazil aut Environmental Biology of Fishes Springer Netherlands 98/4(2015-04-01), 1081-1088 0378-1909 98:4<1081 2015 98 10641 https://doi.org/10.1007/s10641-014-0343-7 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10641-014-0343-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Lopes Célia Fundação Dracenense de Educação e Cultura, Avenida Alcides Chacon Couto 395, CEP 17900-000, Dracena, SP, Brazil aut NATIONALLICENCE 700 1- Manetta Gislaine Núcleo de Pesquisa em Limnologia, Ictiologia e Aquicultura (Nupélia), Universidade Estadual de Maringá (UEM), Avenida Colombo, 5790, Bloco H-90, CEP 87020-900, Maringá, PR, Brazil aut NATIONALLICENCE 700 1- Figueiredo Bruno Núcleo de Pesquisa em Limnologia, Ictiologia e Aquicultura (Nupélia), Universidade Estadual de Maringá (UEM), Avenida Colombo, 5790, Bloco H-90, CEP 87020-900, Maringá, PR, Brazil aut NATIONALLICENCE 700 1- Martinelli Luiz Centro de Energia Nuclear na Agricultura (CENA), Universidade de São Paulo (USP), Avenida Centenário, 303, CEP 13416-000, Piracicaba, SP, Brazil aut NATIONALLICENCE 700 1- Benedito Evanilde Núcleo de Pesquisa em Limnologia, Ictiologia e Aquicultura (Nupélia), Universidade Estadual de Maringá (UEM), Avenida Colombo, 5790, Bloco H-90, CEP 87020-900, Maringá, PR, Brazil aut NATIONALLICENCE 773 0- Environmental Biology of Fishes Springer Netherlands 98/4(2015-04-01), 1081-1088 0378-1909 98:4<1081 2015 98 10641