Feeding convergence in South American and African zooplanktivorous cichlids Geophagus brasiliensis and Tilapia rendalli /Lazzaro, Xavier POISSON D'EAU DOUCE ETHOLOGIE NUTRITION ANIMALE RELATION PREDATEUR PROIE ETUDE COMPARATIVE PLANCTOPHAGE FILTREUR CHASSEUR VISUEL Acara, Geophagus brasiliensis, and red-breasted bream, Tilapia rendalli, are important planktivorous cichlids in Southern Brazilian lakes and reservoirs. In laboratory experiments, I quantified behavior and selectivity of different sizes of these two fish feeding on lake zooplankton. Feeding behavior depended on fish size. Fish <30 mm were visual feeders. Fish 30-50 mm either visually feed or pump-filter fed depending on zooplankton size. Fish >70 mm were pump-filter feeders. Replicate 1 h feeding trials revealed that, as the relative proportions of prey changed during an experiment, acara (30-42 mm, standard lenght) and tilapia (29-42 mm) shifted from visual feeding on large evasive copepods to filter feeding on small cladocerans and rotifers. Electivity and feeding rate increased with prey lenght, but were distinct for similar-sized cladocerans and copepods. Visual/filter-feeding fish had lowest electivities for small and poorly evasive rotifers and cyclopoid nauplii. (D'après résumé d'auteur) 1991 text https://www.documentation.ird.fr/hor/fdi:40415 fdi:40415 Lazzaro Xavier. Feeding convergence in South American and African zooplanktivorous cichlids Geophagus brasiliensis and Tilapia rendalli. 1991, 31, 283-293 EN BRESIL CONGO