caa a22 4500 445890894 CHVBK 20180317145615.0 cr unu---uuuuu 170323e20110601xx s 000 0 eng 10.1007/s10750-011-0643-2 doi (NATIONALLICENCE)springer-10.1007/s10750-011-0643-2 Feeding habits of four sympatric fish species in the Iberian Peninsula: keys to understanding coexistence using prey traits [Elektronische Daten] [Javier Sánchez-Hernández, Rufino Vieira-Lanero, María Servia, Fernando Cobo] Trophic interactions are important factors structuring animal communities. We assessed the trophic relations of four fish species that live in sympatry in the River Ladra (NW Spain), and cluster analysis differentiated two feeding strategies: (1) species with omnivorous feeding habits, feeding mainly on detritus and plant material but with aquatic macroinvertebrates as an important complement (Achondrostoma arcasii and Pseudochondrostoma duriense) and (2) species feeding mainly (Salmo trutta) or exclusively (Gasterosteus gymnurus) on aquatic macroinvertebrates. Concerning ingested macroinvertebrates, the trophic overlap was quantified using Schoener's index and the results obtained revealed a high diet overlap among the species (from 81.3 up to 99.2%). In order to get a deeper insight into mechanisms of fish species coexistence, we used ten biological and ecological traits of macroinvertebrate prey to discriminate feeding preferences. As a result, despite the high similarity among the diets, our analyses suggest that differences in diel activity patterns and drift behaviour of preys, as well as differences in the prey size, are important adaptive features that may reduce the inter-specific competition in the fish community and permit the partitioning of food that allows coexistence. Springer Science+Business Media B.V., 2011 Diet nationallicence Macroinvertebrate traits nationallicence Coexistence nationallicence Iberian Peninsula nationallicence Sánchez-Hernández Javier Departamento de Zoología y Antropología Física, Universidad de Santiago de Compostela, Campus Sur s/n, 15782, Santiago de Compostela, Spain aut Vieira-Lanero Rufino Estación de Hidrobiología "Encoro do Con”, Castroagudín s/n, 36617, Vilagarcía de Arousa, Pontevedra, Spain aut Servia María Departamento de Biología Animal, Biología Vegetal y Ecología, Facultad de Ciencias, Universidad de A Coruña, Campus da Zapateira s/n, 15008 A, Coruña, Spain aut Cobo Fernando Departamento de Zoología y Antropología Física, Universidad de Santiago de Compostela, Campus Sur s/n, 15782, Santiago de Compostela, Spain aut Hydrobiologia Springer Netherlands 667/1(2011-06-01), 119-132 0018-8158 667:1<119 2011 667 10750 https://doi.org/10.1007/s10750-011-0643-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10750-011-0643-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sánchez-Hernández Javier Departamento de Zoología y Antropología Física, Universidad de Santiago de Compostela, Campus Sur s/n, 15782, Santiago de Compostela, Spain aut NATIONALLICENCE 700 1- Vieira-Lanero Rufino Estación de Hidrobiología "Encoro do Con”, Castroagudín s/n, 36617, Vilagarcía de Arousa, Pontevedra, Spain aut NATIONALLICENCE 700 1- Servia María Departamento de Biología Animal, Biología Vegetal y Ecología, Facultad de Ciencias, Universidad de A Coruña, Campus da Zapateira s/n, 15008 A, Coruña, Spain aut NATIONALLICENCE 700 1- Cobo Fernando Departamento de Zoología y Antropología Física, Universidad de Santiago de Compostela, Campus Sur s/n, 15782, Santiago de Compostela, Spain aut NATIONALLICENCE 773 0- Hydrobiologia Springer Netherlands 667/1(2011-06-01), 119-132 0018-8158 667:1<119 2011 667 10750 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer