2007
DOI: 10.1590/s1516-89132007000500004
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Diet of a catfish before and after damming of the salto caxias reservoir, iguaçu river

Abstract: This study evaluated the diet of Pimelodus sp., before and after damming of Salto Caxias, (waterfall

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Cited by 10 publications
(8 citation statements)
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“…Espécie amplamente capturada no baixo rio Iguaçu, apresenta hábito alimentar oportunista, tendo como item preferencial peixes em regiões represadas como os reservatórios, mas podendo consumir diversos itens principalmente na fase rio (UNIVER-SIDADE ESTADUAL DO OESTE DO PARANÁ, 2006;DELARIVA;GOMES, 2007; UNIVERSIDADE ESTADUAL DO OESTE DO PARANÁ, 2008b, 2009a, 2009b. Em algumas estações do ano, o ritmo alimentar dessa espécie intensifica-se no período crepuscular vespertino (UNIVERSIDADE ESTADUAL DE MARINGÁ, 2002).…”
Section: *Hanssens (2009)unclassified
“…Espécie amplamente capturada no baixo rio Iguaçu, apresenta hábito alimentar oportunista, tendo como item preferencial peixes em regiões represadas como os reservatórios, mas podendo consumir diversos itens principalmente na fase rio (UNIVER-SIDADE ESTADUAL DO OESTE DO PARANÁ, 2006;DELARIVA;GOMES, 2007; UNIVERSIDADE ESTADUAL DO OESTE DO PARANÁ, 2008b, 2009a, 2009b. Em algumas estações do ano, o ritmo alimentar dessa espécie intensifica-se no período crepuscular vespertino (UNIVERSIDADE ESTADUAL DE MARINGÁ, 2002).…”
Section: *Hanssens (2009)unclassified
“…On the other hand, the increase in fish consumption by P. britskii, seems to be connected to ontogenetic changes, with adults more inclined to consume fish than young (Delariva et al, 2007) and not only to the necrofagous behaviour. Such hypothesis is enhanced by the fact that, after damming, larger individuals were captured in the dam sites and presented a piscivorous diet with great participation of Cyphocharax cf.…”
Section: Discussionmentioning
confidence: 96%
“…The high availability of allochthonous resource in the environment, may cause a positive effect in the production of all trophic levels, an event known as the trophic upsurge period (Kimmel & Groeger, 1986;O'Brien, 1990;Gubiani et al, 2011). The high availability of small body size species in the new environment should increase the frequency of fish with a carnivorous fish diet (Novakowski et al, 2007) or even lead some omnivorous species to piscivory (Luz- Agostinho et al, 2006;Delariva et al, 2007). Although the nutritional quality of a fish-based diet should be higher than one based on other items, such as invertebrates, due to its high protein (Anthony et al, 2000) and energy content (Davis et al, 1998), the organism's response to this consumption should differ according to the species diet in the natural environment.…”
Section: Introductionmentioning
confidence: 99%
“…This ecosystem is a hypertrophic system, due to the heavy input of organic effluents (DAVID et al, 2006). The high nutrient levels permit the development of algae blooms (DELLAMANO-OLIVEIRA et al, 2006).…”
Section: Study Sitementioning
confidence: 99%
“…The ontogenetic changes in fish diets are common Wootton (1990), as demonstrated in many fish groups DELARIVA et al, 2007;GARCIA-BERTHOU, 2002;NOVAES et al, 2004). Several studies emphasize the seasonal and ontogenetic variation in the diet of tilapiines in African Lakes, Asia and in some Brazilian reservoirs (BWANIKA et al, 2004;MESCHIATTI;ARCIFA, 2002).…”
Section: Introductionmentioning
confidence: 99%