2017
DOI: 10.1590/1982-0224-20160144
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Abstract: Fishes of the order Gymnotiformes have high diversity of oral and head morphology, which suggests trophic specializations within each clade. The aim of this study was to describe resource use patterns by two fish species (Gymnorhamphichthys rondoni and Gymnotus coropinae) in the National Forest Saracá-Taquera, Oriximiná -Pará, analyzing microhabitat use, diet composition, feeding strategies, niche breadth and niche overlap. Stomach contents of 101 individuals (41 G. rondoni and 60 G. coropinae), sampled in 23 … Show more

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Cited by 6 publications
(2 citation statements)
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“…smithi and R. lanceolata;Ibañez et al, 2007;Zuanon et al, 2015). In the case of G. rondoni for example, the sediment dependence, sand-dwelling habit and morphology makes the species highly specialized (Schwassmann, 1976;Zuanon et al, 2006;Soares, Rosa, Silva, Albrecht, & Caramaschi, 2017). Thus, the maintenance of riparian forest environments is extremely important for the survival of these and other species because they provide a wide supply of resources and maintain these resources (Castello et al, 2013), mainly in terms of woody debris (Montag et al, 2018).…”
Section: Discussionmentioning
confidence: 99%
“…smithi and R. lanceolata;Ibañez et al, 2007;Zuanon et al, 2015). In the case of G. rondoni for example, the sediment dependence, sand-dwelling habit and morphology makes the species highly specialized (Schwassmann, 1976;Zuanon et al, 2006;Soares, Rosa, Silva, Albrecht, & Caramaschi, 2017). Thus, the maintenance of riparian forest environments is extremely important for the survival of these and other species because they provide a wide supply of resources and maintain these resources (Castello et al, 2013), mainly in terms of woody debris (Montag et al, 2018).…”
Section: Discussionmentioning
confidence: 99%
“…For benthivorous fish, particularly from streams, the effect of these factors on the predator-prey relationship is unclear, which may be associated with the fact that these fishes dwell the bottom, a structurally complex habitat not always accessible to fish (Hill & Grossman, 1987) which prevents many prey from being used by predators (Gillette, 2012). Recent studies show that many species that consume benthic invertebrates have well-defined diets (Melo et al, 2004;Silva et al, 2012;Cruz et al, 2013;Soares et al, 2017), and the use of certain dietary resources is mainly attributed to the trophic morphology and feeding strategies of predators (Rolla et al, 2009;Silva et al, 2012;Brejão et al, 2013;Neves et al, 2015).…”
Section: Introductionmentioning
confidence: 99%