Alimentação de Cyphocharax voga (Hensel, 1869) (Characiformes, Curimatidae) no arroio Corrientes, Pelotas, Rio Grande do Sul, Brasil

Corrêa, Fabiano; Piedras, Sérgio Renato Noguez

doi:10.5007/2175-7925.2008v21n4p117

Cited by 16 publications

(12 citation statements)

References 3 publications

(3 reference statements)

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“…malabaricus diet. In contrast with Characidae and Poeciliidae specimens that are typically found feeding in the water column (Ceneviva-Bastos and Casatti 2007; Abilhoa et al 2008), specimens of Callichthydae and Curimatidae found in the study site were bottom dwellers typically feeding on detritus near the substrate (Corrêa and Piedras 2008). Based on their absence in the stomach content of H. aff.…”

Section: Discussionmentioning

confidence: 98%

Feeding ecology and prey preferences of a piscivorous fish in the Lagoa do Peixe National Park, a Biosphere Reserve in Southern Brazil

et al. 2011

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We investigated the diet, feeding strategy, size-related dietary shifts and prey preferences of South American Hoplias aff. malabaricus in an internationally recognized but poorly investigated Biosphere Reserve in southern Brazil. Fish were caught between April 2008 and March 2009 using a variety of fishing gear. The analysis of 113 individuals revealed a diet essentially composed of fish (16 species), particularly characid species (9). The diet became more diverse and contained larger fish prey with increasing predator size. Feeding strategy analysis revealed a clear specialization towards the consumption of fish. However, individuals did not prey upon particular prey species, instead opportunistically consuming many different fish species, which could be a strategy to avoid intraspecific competition. Characid species were the most important prey, followed by poecillids. A multi-gear sampling of the ichthyofauna revealed that these prey species were the most abundant (Characidae: 61.3%, Poeciliidae 18.8%) of the 14 fish families occurring at the study site, suggesting that the predator exploits the most abundant fish resources available rather than the rarer fish prey. These findings suggest that potential topdown controls exerted by H. aff. malabaricus in this system follow specific food web pathways that seem to be mediated by the abundance of prey resources.

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Section: Discussionmentioning

confidence: 98%

Feeding ecology and prey preferences of a piscivorous fish in the Lagoa do Peixe National Park, a Biosphere Reserve in Southern Brazil

et al. 2011

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“…The fish-eating habit for H. malabaricus in environments of neotropical regions is well documented in the literature (Corrêa and Piedras 2008). Experimental studies in mesocosms show that H. malabaricus plays an important role in trophic structuring and regulation of forage species in aquatic environments (Mazzeo et al 2010).…”

Section: Feeding and Trophic Guilds Of Fish In The Brazilian Semiaridmentioning

confidence: 93%

Feeding patterns, trophic structure and damming rivers effect: studies applied in freshwater environments in the Brazilian semi-arid region

Oliveira

Nascimento

et al. 2018

JABB

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The knowledge of the fish trophic structure has been outstanding for providing relevant information on the functioning of the ecosystem in which they are inserted, mainly in dammed environments of semiarid regions that suffer constant changes in the level of water, resulting in alterations, especially in the feeding of the fish due to the variation of the food resources throughout the year, causing changes in the diet of the local ichthyofauna. Within this context, the objective was to describe the trophic categories of fish species in freshwater environments of the Rio Grande do Norte state. Seven trophic guilds were recorded: Detritivore/iliophagous, Insectivorous, Carcinophagous, Piscivorous, Herbivorous and Omnivorous. Through the results, it is observed that the fish species inserted in different environments of the state present the same food pattern, demonstrating flexibility on the diet, prevailing a generalist alimentary habit.

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“…The second species found in stomach contents in this drainage is Cyphocharax voga, one of the five most abundant species in these coastal lagoons (Schifino et al, 2004). Both host species are detritivorous and edentulous (Dualiby, 1988;Oliveira and Soares, 1996;Corrêa and Piedras, 2008). In the laguna dos Patos drainage the two identified stomach contents included scales of Bryconamericus iheringii, a characid species with inferior mouth that feeds in the substrate (Orciolli and Bennemann, 2006) and is very abundant in creeks of this drainage (Corrêa et al, 2015).…”

Section: Discussionmentioning

confidence: 99%

Unrevealing Parasitic Trophic Interactions—A Molecular Approach for Fluid-Feeding Fishes

2018

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Fish diets have been traditionally studied through the direct visual identification of food items found in their stomachs. Stomach contents of Vandeliinae and Stegophilinae (family Trichomycteridae) parasite catfishes, however, cannot be identified by usual optical methods due to their mucophagic, lepidophagic, or hematophagic diets, in such a way that the trophic interactions and the dynamics of food webs in aquatic systems involving these catfishes are mostly unknown. The knowledge about trophic interactions, including difficult relation between parasites and hosts, are crucial to understand the whole working of food webs. In this way, molecular markers can be useful to determine the truly hosts of these catfishes, proving a preference in their feeding behavior for specific organisms and not a generalist. Sequences of cytochrome oxidase subunit 1 (COI) were successfully extracted and amplified from mucus or scales found in the stomach contents of two species of stegophilines, Homodiaetus anisitsi, and Pseudostegophilus maculatus, to identify the host species. The two species were found to be obligatory mucus-feeders and occasionally lepidophagic. Selection of host species is associated to host behavior, being constituted mainly by substrate-sifting benthivores. Characiformes are preferred hosts, but host choice depends on what characiform species are available in their environments, usually corresponding to the most abundant species. This is the first time that host species of parasitic fishes bearing mucophagous habits are identified, and demonstrates the effectiveness of the extraction and amplification of mitochondrial DNA from the ingested mucus in gut contents. The molecular markers effectively allowed determine parasite preferences and helps in better understanding the food web and trophic interaction on which fish species are involved. Despite, the methodology applied here can be used for an infinitive of organisms improving ecological trophic studies.

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Alimentação de Cyphocharax voga (Hensel, 1869) (Characiformes, Curimatidae) no arroio Corrientes, Pelotas, Rio Grande do Sul, Brasil

Cited by 16 publications

References 3 publications

Feeding ecology and prey preferences of a piscivorous fish in the Lagoa do Peixe National Park, a Biosphere Reserve in Southern Brazil

Feeding ecology and prey preferences of a piscivorous fish in the Lagoa do Peixe National Park, a Biosphere Reserve in Southern Brazil

Feeding patterns, trophic structure and damming rivers effect: studies applied in freshwater environments in the Brazilian semi-arid region

Unrevealing Parasitic Trophic Interactions—A Molecular Approach for Fluid-Feeding Fishes

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