Diet and trophic guilds of fish assemblages in two streams with different anthropic impacts in the northwest of Paraná, Brazil

Bonato, Karine Orlandi; Delariva, Rosilene Luciana; Silva, Jislaine Cristina da

doi:10.1590/s1984-46702012000100004

Cited by 43 publications

(38 citation statements)

References 61 publications

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“…The consumption of detritus and benthonic invertebrates reinforces the status of benthivorous fish of P. reticulata, such as verified by several authors (Dussalt & Kramer, 1981;Zandona et al, 2011;Silva et al, 2012;Bonatto et al, 2012). However, the presence of terrestrial organisms in the gastrointestinal contents indicates that this small fish can occasionally feed on the surface.…”

Section: Discussionsupporting

confidence: 62%

Diet of Poecilia reticulata Peters, 1959 in streams from Paraná River basin: influence of the urbanization

Alves

Tófoli

Ganassin

et al. 2016

Acta Sci. Biol. Sci.

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ABSTRACT. This study aimed to assess the diet of Poecilia reticulata in rural (RS) and urban stream (US) and under seasonal influence. We hypothesized that rainfall have a strong negative impact on the diet of the species in the US, due to its abrupt effect on food resources; in RS this effect is less apparent. Both streams belong to Pirapó River sub-basin, Paraná River basin. Fishes were sampled bimonthly, between July 2007 and June 2008 in three sample sites along the longitudinal gradient of the streams, using electrofishing. According to the Feeding Index, in both streams the population consumed almost exclusively detritus associated with aquatic organisms (>95%), regardless of the hydrological period. The main taxa explored by fish were Simuliidae in RS and Chironomidae in US. The diet was significantly different between streams; however, the seasonal factor was not significant, showing that the results were partially consistent with the suggested proposal. In US stream the diet of the fish followed an ordinarily pattern found in urban environments. Thus, P. reticulata can be used as a tool to assess environmental conditions due to its ability to reach bioindicator organisms, such as Chironomidae species. Keywords: benthivorous fish, feeding, macroinvertebrates, anthropic impact, Paraná River basin.Dieta de Poecilia reticulata Peters, 1959 em riachos da bacia do rio Paraná: influência da urbanização RESUMO. Este estudo objetivou investigar a dieta de Poecilia reticulata, em riacho rural (RR) e urbano (RU), sob influência sazonal. Foi hipotetizado que a chuva tem forte impacto negativo na dieta da espécie no RU, devido ao efeito abrupto sobre os recursos alimentares disponíveis, sendo este menos aparente em RR. Os riachos pertencem à sub-bacia hidrográfica do rio Pirapó, bacia do rio Paraná. Os peixes foram amostrados bimestralmente entre julho de 2007 e junho de 2008 em três pontos ao longo do gradiente longitudinal dos riachos, usando pesca elétrica. De acordo com o Índice alimentar, em ambos os riachos as populações consumiram quase que exclusivamente detrito associado com organismos aquáticos (>95%) independente do período hidrológico, sendo os principais: Simuliidae no RR e Chironomidae no RU. Houve diferença significativa na dieta entre os dois riachos, porém o fator sazonal não foi significativo, mostrando que os resultados foram parcialmente consistentes com a proposta sugerida. No RU a dieta mostrou um padrão comumente encontrado em ambientes urbanos. Dessa forma, P. reticulata pode ser usada como ferramenta para avaliar condições ambientais devido à sua habilidade em consumir organismos bioindicadores, tais como espécies de Chironomidae.Palavras-chave: peixe bentívoro, alimentação, impacto antrópico, bacia do rio Paraná. IntroductionThe fast radial expansion of urban centers has had as consequence the habitat degradation, and it reflects upon natural resources and aquatic ecosystems (Lee, 2000;Fogaça, Gomes, & Higuti, 2013). Regarding streams in urban areas, the status of degradation is more accele...

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Section: Discussionsupporting

confidence: 62%

Diet of Poecilia reticulata Peters, 1959 in streams from Paraná River basin: influence of the urbanization

Alves

Tófoli

Ganassin

et al. 2016

Acta Sci. Biol. Sci.

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“…Aquatic insects present a wide distribution in the body of water, being able to be found in different microhabitats, such as sediment, macrophytes, rocks, foliage, and submerged trunks allowing them to be exploited by fish of different feeding tactics, (Gordon et al, 2004;Vidotto-Magnoni & Carvalho, 2009). Besides, the elevation of water body volume increases the abundance and availability of terrestrial invertebrates such as insects in the environment (Bonato et al, 2012).…”

Section: Discussionmentioning

confidence: 99%

“…Study the diet and fish food interaction provides ecological information, such as the mechanisms that allow the coexistence and exploitation of resources by several species (Goulding, 1980), as well as to understand the behavior of species in the face of changes in environmental conditions and food availability (Silva et al, 2012b). Thus, studies on the diet of fish are of great importance because they are directly related to obtaining energy and help to understand the activities involved in the development, growth, reproduction and maintenance processes of the organism (Gandini et al, 2014;Bonato et al, 2012;Ribeiro et al, 2014). The variation of the water level at which the reservoirs are submitted annually is another relevant aspect related to the trophic structure, which can result in changes in the fish diet, once that the hydrological routes affect the food resources availability (Santos et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Does the oscillation of the water volume of the reservoir influence in the same way in fish diet?

Oliveira

Rebouças

et al. 2018

Acta Limnol. Bras.

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Aim: To evaluate the fish feeding and to establish the preferential and secondary items of their diets, to determine the trophic guilds and the possible trophic structure variations in function of the water volume in Umari reservoir, Rio Grande do Norte, Brazilian semiarid. Methods: The fish were captured quarterly between February and November of 2013, with gill nets with different meshes, being the apparatuses exposed at 5:00 p.m., with removal at 5:00 a.m. The food items were identified using stereoscopic and optical microscopes and evaluated through the Feeding Index (IAi), being the results of this procedure used in food similarity analysis. The volume of the items was orderly in NMDS and the time differences were tested in PERMANOVA. Results: A total of 740 individuals belonging to 14 species were sampled, being analyzed a total of 258 stomachs and 8 intestines of 11 species. From the IAi values used in the trophic similarity analysis, the species were classified into five trophic guilds: detritivorous, insectivorous, malacophagous, carcinophagous and piscivorous. Conclusion: The oscillation in the water volume of the reservoir did not influence the diet of the guild detritivorous, which shows that the variations in the volume of water of the reservoir do not influence in the same way the diet of the local ichthyofauna.

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“…Estudos sobre a dieta de peixes têm grande importância pelo fato de estarem diretamente relacionados à obtenção de energia e ajudarem a entender as atividades envolvidas nos processos de desenvolvimento, crescimento, reprodução e manutenção do organismo (Gandini et al, 2012;BOnatO et al, 2012). Na bacia do rio Sorocaba apenas dois trabalhos abordaram o tema e foram conduzidos na calha principal do rio: VillaRes JuniOR et al (2008) com Serrasalmus maculatus e VillaRes JuniOR et al (2011) com Schizodon nasutus.…”

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Estudo da dieta natural da ictiofauna de um reservatório centenário, São Paulo, Brasil

Ribeiro

Biagioni

Smith

2014

Iheringia, Sér. Zool.

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ABSTRACT. Study of the natural diet of the fish fauna of a centenary reservoir, São Paulo, Brazil. This study aimed characterize and compare the fish feeding from 13 fish species in three areas (river influence zone, transition zone and lake area) of Itupararanga reservoir. We analyzed 436 stomach, were found 17 food resources, all of autochthonous origin. The predominant species diet were: fish, insect, plant material and debris in the river influence zone; fish, sediment and plant material in the transition zone and insects, fish and scales in the lacustrine zone. The diet was characterized by Feeding Index (IA). Species were categorized in guilds: piscivorous insectivores, detritivores and carcinofagous. The Cluster indicated separation of insectivorous guild in generalist species (insects) and specialized (Chironomidae) which increases to five guilds. In the riverine zone area were found four guilds; in the transition zone three guilds and lacustrine zone two guilds. There was still a dominance of piscivorous species may be related to the age of the reservoir. This study expanded knowledge about fish feeding habits in old reservoirs and their differences comparing existing zones. KEYWORDS.Guilds, old reservoir, resources origin, Sorocaba river, Itupararanga reservoir. RESUMO.Este estudo teve como objetivo caracterizar e comparar a alimentação de 13 espécies de peixes em três zonas (zona de influência fluvial, zona de transição e zona lacustre) do reservatório de Itupararanga. Foram analisados 436 estômagos, sendo encontrados 17 recursos alimentares, todos de origem autóctone. As dietas predominantes das espécies foram: peixe, inseto, material vegetal e detritos na zona de influência fluvial, peixe, sedimento e material vegetal na zona de transição e inseto, escama e peixe na zona lacustre. Através do Índice Alimentar, as espécies foram categorizadas nas guildas: piscívora, insetívora, detritívora e carcinófaga. O Cluster indicou separação da guilda insetívora em espécies generalistas (insetos diversos) e especialista (Chironomidae) o que aumenta para cinco guildas. Na zona fluvial foram verificadas quatro guildas; na zona de transição três guildas e na zona lacustre duas guildas. Observou-se ainda uma dominância de espécies piscívoras que pode estar relacionada à idade do reservatório. Este estudo ampliou o conhecimento dos hábitos alimentares dos peixes em reservatórios antigos e suas diferenças, comparando as zonas existentes. PALAVRAS-CHAVE.Guildas, reservatório antigo, origem recursos, rio Sorocaba, reservatório de Itupararanga.

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Diet and trophic guilds of fish assemblages in two streams with different anthropic impacts in the northwest of Paraná, Brazil

Cited by 43 publications

References 61 publications

<b>Diet of <i>Poecilia reticulata</i> Peters, 1959 in streams from Paraná River basin: influence of the urbanization

<b>Diet of <i>Poecilia reticulata</i> Peters, 1959 in streams from Paraná River basin: influence of the urbanization

Does the oscillation of the water volume of the reservoir influence in the same way in fish diet?

Estudo da dieta natural da ictiofauna de um reservatório centenário, São Paulo, Brasil

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