2009
DOI: 10.1590/s1676-06032009000300002
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Abstract: BRAZIL-SOUSA, C., MARQUES, R.M. & ALBRECHT, M.P. Food partitioning between two heptapterid fish species in Macaé River, RJ (Southeastern Brazil). Biota Neotrop. 9(3): http://www.biotaneotropica.org. br/v9n3/en/abstract?article+bn00309032009. Abstract:Food is the main axis of niche partitioning among fishes, being an important factor for the organization of their populations. We herein investigate this premise for two closely related species, by characterization and comparison of the natural diet of two heptapt… Show more

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Cited by 18 publications
(16 citation statements)
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“…Since the niche is multidimensional, resource partitioning may be not experienced in the type of consumed preys, but in other dimensions like prey size, different use of space and/ or phenotypic characteristics that allow subtle differences in the use of available resources (Esteves and Aranha 1999;Piorski et al 2005;Brazil-Sousa et al 2009). Furthermore, when considering average values of resource use within a population we ignore the fact that the individuals composing the same population may use different resources, minimizing an apparent competition between species.…”
Section: Discussionmentioning
confidence: 99%
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“…Since the niche is multidimensional, resource partitioning may be not experienced in the type of consumed preys, but in other dimensions like prey size, different use of space and/ or phenotypic characteristics that allow subtle differences in the use of available resources (Esteves and Aranha 1999;Piorski et al 2005;Brazil-Sousa et al 2009). Furthermore, when considering average values of resource use within a population we ignore the fact that the individuals composing the same population may use different resources, minimizing an apparent competition between species.…”
Section: Discussionmentioning
confidence: 99%
“…Resource partitioning in neotropical fish communities has been well documented (Corrêa et al 2009;Silva et al 2012) and often related to ecomorphological and/ or behavioral differences that influence the use of space (micro-habitat) and food resources (Piorski et al 2005;Lima et al 2008;Brazil-Sousa et al 2009). Morphological features might be indicators of species life habits, types of resource use or adaptations to occupy the environment (Gatz 1979).…”
Section: Introductionmentioning
confidence: 99%
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“…Casatti (2002), by studying this species in a first order stream (São Carlos Stream) registered a high consummation of Araneae, Hymenoptera, some vegetal and Trichoptera and On the other hand, in larger aquatic systems the species uses to consume in a higher importance autochthonous items. Brasil-Sousa et al (2009) found in a 6 th order river (Macaé river) a consume based predominantly on autochthonous items, mainly formed by crustaceans and fish, and defined R. quelen as a carnivorous species specialized for crustaceans and fish in higher amount, followed by other items in a lesser importance (53 items).…”
Section: Discussionmentioning
confidence: 99%
“…So, it may be difficult to classify the species other to a generalist feeder (Brasil-Sousa et al, 2009). Such a plasticity may be an expected fact, as the normal instability of the freshwater systems may preserve the species which have developed a means of survival within such lotic systems by adapting to distinct food resources (Lowe-McConnell, 1999), a commonly observed fact among the neotropical fishes (Gerking, 1994).…”
Section: Discussionmentioning
confidence: 99%