Pouilly Marc auteur aut IRD Lino F. auteur aut IRD Bretenouz J.G. auteur aut IRD Rosales C. auteur aut IRD text journalArticle eng text/pdf born digital access Morphological correlates of diet were examined in 48 species of freshwater fishes from floodplain lakes in the central part of the MamoreŽ River (Bolivian Amazon). The species were classified, according to the percentage occurrence of seven food items, into eight broad trophic categories: mud feeders, algivores, herbivores, terrestrial invertivores and omnivores, carnivores, zooplanktivores, aquatic invertivores and piscivores. There were significant relationships between the diet and morphology of the fishes even when the effect of taxonomical relatedness between species was eliminated. Relative gut length was the main morphological variable used to order species on a carnivore to mud feeder gradient. Standard length and head and mouth size were the morphological variables most closely associated with prey size. Mud feeder, algivore and piscivore species appeared as the most dietary and morphologically specialized. These results support both the hypotheses that species morphology influences the diet and that morphological similarity is conserved even in comparison with taxonomically unrelated species. (résumé d'auteur) specialized POISSON D'EAU DOUCE MORPHOLOGIE NUTRITION ANIMALE NIVEAU TROPHIQUE PREDATION ANALYSE DE CORRESPONDANCE AMAZONIE BOLIVIE 036EAUCON02 62 5 1137-1158 2003 1095-8649 https://www.documentation.ird.fr/hor/fdi:010051979 10.1046/j.1095-8649.2003.00108.x 1095-8649 [F B010051979] https://www.documentation.ird.fr/hor/fdi:010051979 https://www.documentation.ird.fr/intranet/publi/depot/2011-06-08/010051979.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2010-07-29 2011-06-21 fdi:010051979 fre