Feeding habit of Eigenmannia trilineata Lopez &amp; Castello, 1966 (Teleostei: Sternopygidae) of Parque Estadual de Itapuã, RS, Brazil

Giora, Julia; Fialho, Clarice Bernhardt; Dufech, Ana Paula Sassanovicz

doi:10.1590/s1679-62252005000200007

Cited by 20 publications

(19 citation statements)

References 8 publications

(12 reference statements)

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“…Therefore, the considerably low value of intestinal quotient corroborates with the definition of an invertivorous feeding habit for B. bombilla. The same feeding habit was described for the hypopomids Brachyhypopomus occidentalis and Microsternarchus bilineatus by Arrington et al (2002), and feeding on insects has been reported for species of the families Sternopygidae as well (Soares 1979;Mérigoux and Ponton 1998;Giora et al 2005).…”

Section: Feedingsupporting

confidence: 69%

“…Seasonal reproductive cycle, with no breeding or gonad development during winter months, has been documented by many authors for gymnotiform (Silva et al 2003;Quintana et al 2004;Giora et al 2005;Cognato and Fialho 2006;Schaan, et al 2009) and non-gymnotiform species inhabiting freshwater habitats in southern South America (Hartz et al 1999;Azevedo et al 2000;Querol et al 2002;Gonçalves et al 2005;Lampert et al 2007). However, a long period of dormancy, when an entire population remained buried and without any feeding activity, has never been reported for a gymnotiform or any other freshwater fish from that geographic region.…”

Section: Dormancymentioning

confidence: 97%

“…Aquatic macrophytes in Neotropical streams are micro-habitats colonized by a rich and abundant entomofauna that uses these places for feeding and sheltering (Motta and Uieda 2004). Among the aquatic insects, the family Chironomidae constitutes the most common taxa of the diet of gymnotiform (Soares 1979;Mago-Leccia 1994;Giora et al 2005) and nongymnotiform freshwater fish (Angermeier 1982;Arcifa et al 1988;Greger and Deacon 1988), and constitute the most frequent and abundant item of the diet of B. bombilla as well.…”

Section: Feedingmentioning

confidence: 99%

“…However, recent studies have unveiled a substantial number of new species from southern and southeastern portions of Brazil and Uruguay (Costa and Campos-da-Paz 1992;Triques and Khamis 2003;Loureiro and Silva 2006;Giora et al 2008;Giora and Malabarba 2009), indicating that these regions are much more taxonomically diverse than was expected in the past. The ecological understanding of gymnotiforms was also mostly focused on northern South America, whereas recent studies (Silva et al 2002;Silva et al 2003;Quintana et al 2004;Giora et al 2005;Cognato and Fialho 2006;Giora and Fialho 2009;Schaan et al 2009) provide information on populations from the southern boundary of the electric fish distribution (southern Brazil, Uruguay, and Argentina).…”

Section: Introductionmentioning

confidence: 99%

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Reproduction and feeding habits of the highly seasonal Brachyhypopomus bombilla (Gymnotiformes: Hypopomidae) from southern Brazil with evidence for a dormancy period

2011

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The reproductive biology and feeding habits of the hypopomid Brachyhypopomus bombilla were studied. The species has seasonal behavior, with breeding and feeding activity occurring mostly during the Southern Hemisphere spring and summer. We defined fractional spawning for the species and a relative fecundity similar to those previously reported for other gymnotiform species. According to the analysis of the food items, B. bombilla was included in the trophic category invertivorous, feeding mainly on autochthonous insects. The reproductive periods of males and females as well as female feeding activity were significantly related to the photoperiod. During a period of 5 months, when the lowest water temperatures and shortest photoperiod were recorded, all the specimens of B. bombilla were found buried in the muddy bottom of the creek, with lower electric organ discharge activity, empty stomachs, and gonads in early stages of the maturation process. This period, herein defined as a dormancy period, is reported here for the first time for a species of the Gymnotiformes order.

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Section: Feedingsupporting

confidence: 69%

Section: Dormancymentioning

confidence: 97%

Section: Feedingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Reproduction and feeding habits of the highly seasonal Brachyhypopomus bombilla (Gymnotiformes: Hypopomidae) from southern Brazil with evidence for a dormancy period

2011

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“…Os gimnotiformes encontrados na lagoa Negra são exemplos de organismos que dependem diretamente deste tipo de vegetação para sua sobrevivência. Eigenmannia trilineata, por exemplo, é encontrada em cardumes sob estas plantas, as quais são comprovadamente utilizadas na dieta da espécie, assim como os invertebrados que se associam às suas raízes (GIORA et al, 2005 (UIEDA, 1984).…”

Section: Discussionunclassified

Estudo comparado da taxocenose de peixes em dois ambientes aquáticos do Parque Estadual de Itapuã, sul do Brasil

Dufech

Fialho

2009

Iheringia, Sér. Zool.

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ABSTRACT. Comparative study of taxocenoses of fishes from two aquatic environments of the Parque Estadual de Itapuã, southern Brazil. This paper characterizes and compares the taxocenoses of fish from two different aquatic environments within a basin hidrographyc: the Praia das Pombas (Lago Guaíba) and the Lagoa Negra, both in the Parque Estadual de Itapuã, Rio Grande do Sul, considering quali-quantitative composition of the ichthyofauna. Ecological and abundance indexes were evaluated in both spatial and temporal contexts, checking that occurs relationship between the structure of taxocenose these sites with environmental variables. We sampled a total of 61 species, with the richness the same in both locations (44 species). Both environments showed peculiar characteristics that reflected on the fish fauna in each location. It was observed that the pattern of distribution of the taxocenoses of fishes studied in the two environments is seasonal, since the abundance, biomass and diversity were higher in the hottest months of the year, spring and summer. The temperature and day-length the main factors that influenced in the distribution of the fish fauna of the Praia das Pombas and Lagoa Negra. KEYWORDS.Praia das Pombas, Lagoa Negra, ichthyofauna, diversity, seasonality. RESUMO.Este trabalho tem por objetivos caracterizar e comparar a taxocenose de peixes de dois ambientes aquáticos distintos dentro de uma mesma bacia hidrográfica: a praia das Pombas (lago Guaíba) e a lagoa Negra, ambos no Parque Estadual de Itapuã, Rio Grande do Sul. Foram analisados aspectos que incluem a composição quali-quantitativa da ictiofauna. Para tanto, foram utilizados índices ecológicos e de abundância, sendo avaliados espacial e temporalmente e verificando se ocorre relação entre a estrutura da taxocenose destes locais e as variáveis ambientais. Foram amostradas 61 espécies no total, sendo a riqueza a mesma nos dois ambientes (44 espécies). Os dois ambientes estudados apresentam características peculiares, refletindo na composição de espécies de cada um destes locais. Foi possível observar que o padrão de distribuição da taxocenose de peixes estudada nos dois ambientes é sazonal, uma vez que a abundância, a biomassa e a diversidade foram mais elevadas nos meses mais quentes do ano, ou seja, primavera e verão. A temperatura e o fotoperíodo foram os principais fatores que influenciaram na distribuição da fauna de peixes da praia das Pombas e na lagoa Negra.

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Atlas of Fish of Tapajós and Negro Rivers II: Gymnotiformes and Siluriformes

Silvano

Nitschke

Vieira

et al. 2020

Fish and Fisheries in the Brazilian Amazon

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Feeding habit of Eigenmannia trilineata Lopez & Castello, 1966 (Teleostei: Sternopygidae) of Parque Estadual de Itapuã, RS, Brazil

Cited by 20 publications

References 8 publications

Reproduction and feeding habits of the highly seasonal Brachyhypopomus bombilla (Gymnotiformes: Hypopomidae) from southern Brazil with evidence for a dormancy period

Reproduction and feeding habits of the highly seasonal Brachyhypopomus bombilla (Gymnotiformes: Hypopomidae) from southern Brazil with evidence for a dormancy period

Estudo comparado da taxocenose de peixes em dois ambientes aquáticos do Parque Estadual de Itapuã, sul do Brasil

Atlas of Fish of Tapajós and Negro Rivers II: Gymnotiformes and Siluriformes

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