caa a22 4500 605509395 CHVBK 20210128100641.0 cr unu---uuuuu 210128e20151201xx s 000 0 eng 10.1007/s10452-015-9535-2 doi (NATIONALLICENCE)springer-10.1007/s10452-015-9535-2 Seasonal variation in the use of food resources by small fishes inhabiting the littoral zone in a Neotropical floodplain lake [Elektronische Daten] [Bárbara Quirino, Natália Carniatto, Juliana Gaiotto, Rosemara Fugi] This study evaluated the effect of seasonality on diet composition and overlap in fish species inhabiting the littoral zone of a small lake. We analyzed whether the way the species exploit food resources may help explain their coexistence. Fish samples were collected in a lake in the Upper Paraná River floodplain in September (dry period) and December (rainy period) of 2010. The diet of six species was evaluated through stomach content analysis, which showed that the most consumed resources were microcrustaceans, aquatic insects, aquatic higher plant and algae. Diet composition was significantly different between periods for all species studied. Diet overlap values were low in both periods, but trophic segregation was even higher in the rainy period, indicating that with greater abundance of food resources, species could exploit preferential resources. Trophic segregation, evidenced by the low overlap values in both periods, indicates the absence of interspecific competition, which may explain the coexistence of these species in the littoral zone of this small lake. Springer Science+Business Media Dordrecht, 2015 Diet nationallicence Trophic segregation nationallicence Food partitioning nationallicence Paraná River nationallicence Quirino Bárbara Universidade Estadual de Maringa, Núcleo de Pesquisas em Limnologia Ictiologia e Aquicultura, Avenida Colombo, 5790 - Jardim Universitario, 87020-900, Maringá, Brazil aut Carniatto Natália Universidade Estadual de Maringa, Núcleo de Pesquisas em Limnologia Ictiologia e Aquicultura, Avenida Colombo, 5790 - Jardim Universitario, 87020-900, Maringá, Brazil aut Gaiotto Juliana Universidade Estadual de Maringa, Núcleo de Pesquisas em Limnologia Ictiologia e Aquicultura, Avenida Colombo, 5790 - Jardim Universitario, 87020-900, Maringá, Brazil aut Fugi Rosemara Universidade Estadual de Maringa, Núcleo de Pesquisas em Limnologia Ictiologia e Aquicultura, Avenida Colombo, 5790 - Jardim Universitario, 87020-900, Maringá, Brazil aut Aquatic Ecology Springer Netherlands 49/4(2015-12-01), 431-440 1386-2588 49:4<431 2015 49 10452 https://doi.org/10.1007/s10452-015-9535-2 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/s10452-015-9535-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Quirino Bárbara Universidade Estadual de Maringa, Núcleo de Pesquisas em Limnologia Ictiologia e Aquicultura, Avenida Colombo, 5790 - Jardim Universitario, 87020-900, Maringá, Brazil aut NATIONALLICENCE 700 1- Carniatto Natália Universidade Estadual de Maringa, Núcleo de Pesquisas em Limnologia Ictiologia e Aquicultura, Avenida Colombo, 5790 - Jardim Universitario, 87020-900, Maringá, Brazil aut NATIONALLICENCE 700 1- Gaiotto Juliana Universidade Estadual de Maringa, Núcleo de Pesquisas em Limnologia Ictiologia e Aquicultura, Avenida Colombo, 5790 - Jardim Universitario, 87020-900, Maringá, Brazil aut NATIONALLICENCE 700 1- Fugi Rosemara Universidade Estadual de Maringa, Núcleo de Pesquisas em Limnologia Ictiologia e Aquicultura, Avenida Colombo, 5790 - Jardim Universitario, 87020-900, Maringá, Brazil aut NATIONALLICENCE 773 0- Aquatic Ecology Springer Netherlands 49/4(2015-12-01), 431-440 1386-2588 49:4<431 2015 49 10452