Diet of Iheringichthys labrosus (Pimelodidae, Siluriformes) in the Itaipu Reservoir, Paraná River, Brazil-Paraguay

Abes, Sara da Silva; Agostinho, Ângelo Antônio; Okada, Edson Kiyoshi; Gomes, Luiz Carlos

doi:10.1590/s1516-89132001000100014

Cited by 22 publications

(28 citation statements)

References 14 publications

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“…The importance of BM as an autochthonous food resource for fishes in rivers and streams is well documented in the literature (PREJS & PREJS 1987, LOBON-CERVIÁ & BENNEMANN 2000, ABELHA et al 2001, ABES et al 2001, CALLISTO et al 2002b, CASATTI 2002, WILLIAMS et al 2003, POUILLY et al 2004.…”

Section: Discussionmentioning

confidence: 94%

Benthic macroinvertebrate assemblages structure in two headwater streams, south-eastern Brazil

2007

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From December 2003 to September 2004, benthic macroinvertebrates (BM), fishes, water and sediment were collected quarterly at six stations in two streams of the upper São Francisco River basin, south-eastern Brazil. We evaluated the ecological conditions, habitat diversity, water quality, composition and structure of BM communities, as well as the food habits of the local fish fauna. By applying a protocol for rapid characterization of ecological conditions and habitat diversity, three of the sampled localities were classified as "pristine" while the others stations were considered "altered". A well oxygenated water with near neutral pH and low electric conductivity (< 0.01 mS/cm) and nutrient concentrations (< 0.08 mg/l total P and < 0.90 mg/l total N) was found for both streams. Sediment analysis revealed the dominance of medium, fine and very fine sand fractions in all sampled areas. The organic matter content in the sediment was higher in the lotic and well preserved area. We found 45 BM taxa, and Chironomidae (68%), Oligochaeta (10%) and Elmidae (8.5%) showed the highest abundances. From the stomach contents analysis of 13 fish species, 26 BM taxa were found, including four that were not collected in the sediment samples, being Chironomidae the dominant group (> 60%). Our results show that human activities such as forest clearing, agriculture and cattle rising have altered the habitat diversity in freshwater ecosystems in a process that affects the aquatic biota and thus the food availability to the fish fauna. The results also highlight the importance of the fish stomach contents analysis as a complementary tool in BM inventories.

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Section: Discussionmentioning

confidence: 94%

Benthic macroinvertebrate assemblages structure in two headwater streams, south-eastern Brazil

2007

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“…Iheringichthys labrosus (Lütken, 1874; Siluriformes, Pimelodidae) is a South American non migratory freshwater fish that is abundant in numerous reservoirs (Burges, 1989) and rivers (Abes et al, 2001;Teixeira-de Mello et al, 2008). The maximum total length reported for this species is 33.4 cm (Fagundes et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

“…Iheringichthys labrosus shows no parental care behaviour and reproduces along the year, with multiple spawning reproductive peaks synchronized with rainy season (Santos et al, 2006). This species exhibits a sub-terminal mouth, with dentigerous plates (Fugi et al, 2001), thick lips and free superior margin (Abes et al, 2001). It has a wide space between gill rakers, a sacciform stomach and a short intestine (Fugi et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

Feeding habits and morphometry of Iheringichthys labrosus (Lütken, 1874) in the Uruguay River (Uruguay)

Masdeu

Mello

Loureiro³

et al. 2011

Neotrop. ichthyol.

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Body size and diet of organisms are fundamental attributes which determine their ecology and natural history. Iheringichthys labrosus is one of the most common fish species of the Uruguay River. However, its natural history is poorly known and there is little information about its diet and interactions with other species. This paper describes the feeding habits of this species, relating feeding patterns to the size classes and morphometry of individuals and to the temporal variations. Fishes were captured in May and November of 2006 in three zones of the lower Uruguay River. A total of 101 stomach contents was analyzed (standard length: 60-224 mm). The species exhibited a broad feeding spectrum with most items belonging to the benthic community. We found significant diet differences between size classes and studied months. However, we have not found a close relationship between changes in morphometric variables and diet shifts between size classes.O tamanho do corpo e a dieta são atributos fundamentais que determinam a ecologia e a história de vida dos organismos. Iheringichthys labrosus é uma das espécies mais comuns do rio Uruguai, entretanto, sua história natural é pouco conhecida e particularmente existe pouca informação sobre sua dieta e interações com outras espécies. Este artigo descreve os hábitos alimentares de I. labrosus, associando os padrões de alimentação com as classes de tamanho, à morfometria dos indivíduos e às variações temporais. Um total de 101 estômagos foi analisado (comprimento padrão: 60-224 mm). Os peixes foram capturados durante Maio e Novembro de 2006 em três áreas da porção inferior do rio Uruguai. Iheringichthys labrosus exibiu um amplo espectro alimentar, com a maioria dos componentes da dieta pertencentes à comunidade bentônica. Foram encontradas diferenças significativas na dieta em relação às classes de tamanho dos indivíduos e aos meses de estudo. No entanto, não foram encontradas relações estreitas entre as variáveis morfométricas analisadas e variações na dieta entre as classes de tamanho.

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“…In the Itaipu Reservoir, I. labrosus is a secondary species in commercial fishery importance (Abes et al, 2001). However, it is an important fish species in other reservoirs of the basin, especially Promissão and Água Vermelha Reservoirs (Agostinho et al, 1995;CESP, 1996).…”

Section: Introductionmentioning

confidence: 99%

“…The reproduction of I. labrosus was studied by Silva (1995) in the Camargos Reservoir and Santos et al (2004) in the Funas Reservoir, both in state of Minas Gerais, Brazil. The diet of I. labrosus was studied by Fugi (1993), Fugi et al (1996) and Abes et al (2001) in the Upper Paraná River, and Fagundes et al (2008) in the Ibicuí River. However, in spite of its increasing importance in commercial fishery, studies on the population dynamics and reproductive biology of I. labrosus in the Piquiri River are nonexistent.…”

Section: Introductionmentioning

confidence: 99%

Iheringichthys labrosus (Siluriformes: Pimelodidae) in the Piquiri River, Paraná, Brazil: population structure and some aspects of its reproductive biology

Holzbach¹,

Gubiani

Baumgartner

2009

Neotrop. ichthyol.

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Diet of Iheringichthys labrosus (Pimelodidae, Siluriformes) in the Itaipu Reservoir, Paraná River, Brazil-Paraguay

Cited by 22 publications

References 14 publications

Benthic macroinvertebrate assemblages structure in two headwater streams, south-eastern Brazil

Benthic macroinvertebrate assemblages structure in two headwater streams, south-eastern Brazil

Feeding habits and morphometry of Iheringichthys labrosus (Lütken, 1874) in the Uruguay River (Uruguay)

Iheringichthys labrosus (Siluriformes: Pimelodidae) in the Piquiri River, Paraná, Brazil: population structure and some aspects of its reproductive biology

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