Revision of the Neotropical genus Triportheus Cope, 1872 (Characiformes: Characidae)

Malabarba, Maria Claudia S. L.

doi:10.1590/s1679-62252004000400001

Cited by 57 publications

(57 citation statements)

References 12 publications

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“…are Characidae with a geographic wide distribution in Bolivia, Colombia, Peru, Argentina, Ecuador, Venezuela and Brazil (SANTOS et al, 2006;FROESE & PAULY, 2016). Currently, 18 species of Triportheus Cope, 1872 are known, including Triportheus rotundatus Jardine, 1841 (MALABARBA, 2004;FROESE & PAULY, 2016), the fish species that is the focus of the present study. The species of Triportheus inhabit most of the major river drainages of South America, and constitutes an important element in both commercial and subsistence fisheries in the Amazon basin (MALABARBA, 2004), its reproduction occurs during the rainy season in the Amazon River system (FROESE & PAULY, 2016).…”

Section: Communities Of Parasites In Triportheus Rotundatusmentioning

confidence: 99%

“…Currently, 18 species of Triportheus Cope, 1872 are known, including Triportheus rotundatus Jardine, 1841 (MALABARBA, 2004;FROESE & PAULY, 2016), the fish species that is the focus of the present study. The species of Triportheus inhabit most of the major river drainages of South America, and constitutes an important element in both commercial and subsistence fisheries in the Amazon basin (MALABARBA, 2004), its reproduction occurs during the rainy season in the Amazon River system (FROESE & PAULY, 2016). Triportheus rotundatus is a benthopelagic fish with an omnivorous diet, fed on fruits, seeds and insects that float on the water surface, besides microcrustaceans (PEREIRA et al, 2011;FROESE & PAULY, 2016;SUÇUARANA et al, 2016).…”

Section: Communities Of Parasites In Triportheus Rotundatusmentioning

confidence: 99%

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First study on communities of parasites in Triportheus rotundatus, a Characidae fish from the Amazon River system (Brazil)

Santos

Tavares‐Dias

2016

Rev. Bras. Parasitol. Vet.

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This study was the first investigation on the parasites of Triportheus rotundatus, a Characiformes fish from the Amazon, in Brazil. All the fish collected (100%) in a tributary from the Amazon River system were infected by one or more parasite species. The mean species richness of parasites was 4.9 ± 0.9, the Brillouin index was 0.39 ± 0.16, the evenness was 0.24 ± 0.09 and the Berger-Parker dominance was 0.81 ± 0.13. A total of 1316 metazoan parasites were collected, including Anacanthorus pithophallus, Anacanthorus furculus, Ancistrohaptor sp. (Dactylogyridae), Genarchella genarchella (Derogenidae), Posthodiplostomum sp. (Diplostomidae), Procamallanus (Spirocamallanus) inopinatus (Camallanidae), Echinorhynchus paranensis (Echinorhynchidae) and Ergasilus sp. (Ergasilidae), but monogenoideans were the dominant parasites. These parasites presented an aggregate dispersion pattern, except for P. (S.) inopinatus, which showed a random dispersion pattern. The body conditions of the hosts were not affected by the parasitism levels. This first report of these parasites for T. rotundatus indicates that the presence of ectoparasites and endoparasites was due to hosts behavior and availability of infective stages in the environment, and this was discussed.Keywords: Amazon, diversity, endoparasites, freshwater fish, infracommunity. ResumoEste estudo foi a primeira investigação sobre os parasitos de Triportheus rotundatus, um Characiformes da Amazônia, no Brasil. Todos os peixes coletados (100%) em um afluente do sistema Rio Amazonas estavam infectados por uma ou mais espécies de parasitos. A riqueza média de espécies de parasitos foi 4,9 ± 0,9, índice de Brillouin 0.39 ± 0,16, equitabilidade 0,24 ± 0,09 e a dominância de Berger-Parker foi 0,81 ± 0,13. Um total de 1.316 parasitos metazoários foram coletados, incluindo Anacanthorus pithophallus, Anacanthorus furculus, Ancistrohaptor sp. (Dactylogyridae), Genarchella genarchella (Derogenidae), Posthodiplostomum sp. (Diplostomidae), Procamallanus (Spirocamallanus) inopinatus (Camallanidae), Echinorhynchus paranensis (Echinorhynchidae) e Ergasilus sp. (Ergasilidae), mas monogenoideas foram os parasitos dominantes. Estes parasitos apresentaram padrão de dispersão agregado, com exceção de P. (S.) inopinatus, que mostrou padrão de dispersão randômico. As condições corporais dos hospedeiros não foram afetadas pelos níveis de parasitismo. Este primeiro relato desses parasitos em T. rotundatus indica que a presença de ectoparasitos e endoparasitos foi devido ao comportamento dos hospedeiros e disponibilidade de estágios infectantes no ambiente, e isso foi discutido.Palavras-chave: Amazônia, diversidade, endoparasitos, peixes de água doce, infracomunidades.

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Section: Communities Of Parasites In Triportheus Rotundatusmentioning

confidence: 99%

Section: Communities Of Parasites In Triportheus Rotundatusmentioning

confidence: 99%

First study on communities of parasites in Triportheus rotundatus, a Characidae fish from the Amazon River system (Brazil)

Santos

Tavares‐Dias

2016

Rev. Bras. Parasitol. Vet.

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“…As S. borelli has been easily caught in different environments of the upper rio Paraná basin over the last few decades (Agostinho et al, 2004), it has led some authors to consider it as native (Langeani et al, 2007). Triportheus nematurus is the current valid name for the species lately called T. paranensis, as stated by Malabarba (2004), who described the nomenclatural problems surrounding this species. It naturally occurred only in the lower rio Paraná basin, and its current incidence in the upper Paraná has been attributed to the Itaipu building by some authors (Portugal, 1990;Langeani et al, 2007).…”

Section: Other Allochthonous Speciesmentioning

confidence: 99%

A massive invasion of fish species after eliminating a natural barrier in the upper rio Paraná basin

et al. 2009

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Based on long-term studies in the upper rio Paraná basin, in addition to a broad review of literature and other information, we were able to identify 33 species of native fishes in the lower rio Paraná basin that successfully colonized the upper rio Paraná after Itaipu impoundment, that flooded the natural geographic barrier constituted by the Sete Quedas Falls. These species belong to six Orders, encompassing two of Myliobatiformes, six of Characiformes, 17 of Siluriformes, six of Gymnotiformes, one of Perciformes, and one of Pleuronectiformes. Extensive remarks regarding each species, including their influence upon the native assemblage, in addition to comments on other non-indigenous species, are also provided. We conclude that, in spite of its widespread neglected by environmental impact studies, massive invasion of species is a real possibility when natural barriers are suppressed by reservoirs.Baseando-se em pesquisas de longa duração na bacia do alto rio Paraná, em adição à ampla revisão bibliográfica e outras informações, pudemos reconhecer 33 espécies nativas da bacia do baixo rio Paraná que colonizaram o alto Paraná com sucesso, após a construção de Itaipu, que inundou a barreira geográfica natural constituída pelos Saltos de Sete Quedas. Estas espécies pertencem a seis ordens, incluindo duas de Myliobatiformes, seis de Characiformes, 17 de Siluriformes, seis de Gymnotiformes, uma de Perciformes, e uma de Pleuronectiformes. Extensas observações sobre cada espécie, incluindo a influência delas sobre a assembleia nativa, além de comentários sobre outras espécies não-indígenas são igualmente fornecidos. Nós concluímos que, embora geralmente negligenciadas pelas análises de impactos ambientais, invasões massivas são possibilidades reais quando barreiras naturais são suprimidas por reservatórios.

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“…5). Although T. curtus is a pelagic species (Malabarba, 2004), and the majority of Ostracoda is benthic or associated with macrophytes (Higuti et al, 2007), the explanation for the high consumption of these organisms may be related to the fact that some species of Ostracoda migrate upwards and swim in the water column. These include species of the genus Physocypria (Delorme, 2001) the only member of Ostracoda consumed by T. curtus.…”

Section: Discussionmentioning

confidence: 99%

“…The fishery for sardinhas is seasonal, and they are harvested in the September-November period, when they migrate over long distances to breed (Doria & Queiroz, 2008). The freshwater sardinhas of the genus Triportheus are small-sized pelagic species with a superior mouth position and weak dentition, and their usual diets includes seeds, plankton, and small invertebrates (Malabarba, 2004). Their feeding habits range from omnivore to insectivore and some species are partly zooplanktivorous, in different environments (Galina & Hahn, 2003).…”

Section: Introductionmentioning

confidence: 99%

Effects of flood regime on the diet of Triportheus curtus (Garman, 1890) in an Amazonian floodplain lake

et al. 2011

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We analyzed the diet of Triportheus curtus in Lake Amapá on the Acre River (AC -Brazil), during three distinct phases of the hydrological cycle (pre-flooding, flooding, and post-flooding stages). The flooding occurred between January and June of 2009. Samples were collected monthly from October 2008 through September 2009. After collection (at 19:00, 01:00, 07:00, and 13:00 hs) and taxonomic identification, fish were eviscerated and their stomachs preserved in a 4% formalin solution for later analysis. The diet was evaluated by the Index of Relative Importance (IRI), and temporal variations (pre-flooding, flooding, and post-flooding) in the diet were summarized by an ordination technique (DCA). The diet of T. curtus was comprised of several orders of insects and microcrustaceans. In the pre-flooding stage, more than 62% of the diet consisted of Ostracoda. In the flooding phase, T. curtus fed mainly on Chaoboridae larvae (Diptera) (44.3%) and terrestrial insects (fragments) (33.7%). In the post-flooding phase, Chaoboridae comprised 80% of the diet. These results indicate that the utilization of food resources by T. curtus was variable, changing with alterations in the availability of resources, as influenced by the hydrological cycle. The population of T. curtus proved to be opportunistic, changing its diet in the course of the hydrological cycle.Neste estudo avaliamos a dieta de Triportheus curtus, no lago Amapá, rio Acre (AC -Brasil), em três períodos distintos do ciclo hidrológico (pré-pulso, pulso e pós-pulso). As coletas foram realizadas mensalmente de outubro de 2008 a setembro de 2009, e o pulso de cheia ocorreu entre janeiro e junho de 2009. Após as despescas (19:00, 01:00, 07:00 e 13:00 hs) e identificação taxonômica, os indivíduos foram eviscerados e os estômagos preservados em formalina 4% para posterior análise. A dieta foi avaliada através do Índice de Importância Relativa (IRI), e as variações temporais (pré-pulso, pulso e pós-pulso) na dieta foram sumarizadas através de uma análise de ordenação (DCA). A dieta de T. curtus foi composta de insetos de diferentes ordens e microcrustáceos. No pré-pulso, aproximadamente 62% da dieta foi composta por Ostracoda. No pulso, T. curtus consumiu principalmente larvas de Chaoboridae (Diptera) (44,3%) e insetos terrestres (fragmentos) (33,7%). No pós-pulso, larvas de Chaoboridae representaram 80% da dieta. Estes resultados indicam que a dieta de T. curtus varia temporalmente, e que a espécie pode ser considerada oportunista, alterando sua dieta de acordo com a abundância dos recursos nas diferentes fases do ciclo hidrológico.

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Revision of the Neotropical genus Triportheus Cope, 1872 (Characiformes: Characidae)

Cited by 57 publications

References 12 publications

First study on communities of parasites in Triportheus rotundatus, a Characidae fish from the Amazon River system (Brazil)

First study on communities of parasites in Triportheus rotundatus, a Characidae fish from the Amazon River system (Brazil)

A massive invasion of fish species after eliminating a natural barrier in the upper rio Paraná basin

Effects of flood regime on the diet of Triportheus curtus (Garman, 1890) in an Amazonian floodplain lake

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