&lt;b&gt;Parasites in &lt;i&gt;Curimata cyprinoides&lt;/i&gt; (Characiformes: Curimatidae) from eastern Amazon, Brazil&lt;/b&gt; - doi: 10.4025/actascibiolsci.v35i4.19649

Tavares‐Dias, Marcos; Neves, Lígia Rigôr; Pinheiro, Douglas Anadias; Oliveira, Marcos Sidney Brito; Marinho, Renata das Graças Barbosa

doi:10.4025/actascibiolsci.v35i4.19649

Cited by 17 publications

(42 citation statements)

References 20 publications

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“…Although G. leporini in this study had the highest mean intensity of Metazoan parasite communities of Leporinus macrocephalus (Characiformes: Anostomidae) in cultivation systems in the western Amazon, Brazil ACTA AMAZONICA infection in both systems (10.1), they had low prevalence (21.5%), while in southeastern Brazil prevalence was higher (65%), with lower mean infection intensity (4.1) (Martins and Yoshitoshi 2003). The aggregated dispersion of metazoan parasites in L. macrocephalus found in our study is a common pattern in parasite communities of freshwater fish in different regions of Brazil (Machado et al 1996;Abdallah et al 2004;Moreira et al 2005;Paraguassú and Luque 2007;Guidelli et al 2009;Neves et al 2013;Tavares-Dias et al 2013). This mode of dispersion has been associated with the direct life cycle of Monogenoidea parasites, as well as the susceptibility and capacity of immunological response of the hosts (Paraguassú and Luque 2007;Tavares-Dias et al 2013).…”

Section: Discussionmentioning

confidence: 52%

“…The aggregated dispersion of metazoan parasites in L. macrocephalus found in our study is a common pattern in parasite communities of freshwater fish in different regions of Brazil (Machado et al 1996;Abdallah et al 2004;Moreira et al 2005;Paraguassú and Luque 2007;Guidelli et al 2009;Neves et al 2013;Tavares-Dias et al 2013). This mode of dispersion has been associated with the direct life cycle of Monogenoidea parasites, as well as the susceptibility and capacity of immunological response of the hosts (Paraguassú and Luque 2007;Tavares-Dias et al 2013). Dispersion values were lower for species with high prevalence, because aggregation tends to decrease as the proportion of hosts that are infected increases, and parasites spread more evenly among hosts, leaving fewer hosts uninfected (Poulin 1993).…”

Section: Discussionmentioning

confidence: 87%

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Metazoan parasite communities of Leporinus macrocephalus (Characiformes: Anostomidae) in cultivation systems in the western Amazon, Brazil

Martins

Justo²,

Cárdenas³

et al. 2017

Acta Amaz.

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In the Amazon, the growing demand for fish has been boosting the expansion of fish farms. However, the intensification of cultivation can generate disequilibrium in the parasite-host environment, predisposing fish to parasitic infections. The objective of this study was to evaluate the community structure of metazoan parasites in cultivation systems of piauçu, Leporinus macrocephalus, in the state of Acre, Brazil. We examined 100 specimens from a semi-intensive cultivation system (earth tanks) and 100 from an extensive system (dams). Overall 66.5% of the hosts were parasitized. We collected 1,240 parasite specimens, classified in 15 metazoan taxa (10 monogenoidean, one digenean and four nematodes). The parasite prevalence was higher by Monogenoidea in the dams, and by Nematoda in the earth tanks. The parasitic indexes were, in general, low and varied among species. Monogeneoidea had higher values for quantitative and ecological descriptors of parasitism in the dams, while Nematoda had higher values in the earth tanks. A single species of Digenea was found in the dams, with low prevalence. No taxon was classified as central. In the dams, parasite abundance was correlated only with total fish length, while in the earth tanks, it was positively correlated with total length, weight and condition factor of fish. The endoparasite and ectoparasite infracommunities presented higher richness, dominance, diversity and evenness, respectively, in the earth tanks and in the dams. This is the first study of ecological descriptors of parasites of L. macrocephalus in the Amazon. KEYWORDS: diversity, Digenea, Monogenoidea, NematodaComunidade de metazoários parasitos de Leporinus macrocephalus (Characiformes: Anostomidae) em sistemas de cultivo no oeste da Amazônia, Brasil RESUMO Na Amazônia, a crescente demanda por pescado vem impulsionando a expansão da piscicultura. No entanto, a intensificação dos cultivos pode gerar desequilíbrio no sistema parasito-hospedeiro-ambiente, predispondo os peixes a infecções parasitárias. O objetivo deste estudo foi avaliar a estrutura das comunidades de metazoários parasitos de piauçu, Leporinus macrocephalus, em sistemas de cultivo no estado do Acre, Brasil. Foram coletados 200 peixes, sendo 100 espécimes de sistema de cultivo semi-intensivo em viveiro escavado e 100 de sistema extensivo em açude. Dos 200 hospedeiros analisados 66,5% estavam parasitados. Foram coletados 1.240 espécimes de metazoários, classificados em quinze espécies (10 de Monogenoidea, uma de Digenea e quatro de Nematoda). A prevalência de parasitismo por Monogenoidea foi maior em açude e por Nematoda em viveiro. De forma geral, os índices de parasitismo foram baixos e variaram entre as espécies, com maiores valores dos descritores quantitativos e ecológicos do parasitismo por Monogenoidea em açude e Nematoda em viveiro. A única espécie de Digenea foi encontrada em açude e com baixa prevalência. Nenhum táxon foi classificado como central. Nos açudes, a abundância parasitária foi correlacionada apenas com o comprimento...

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Section: Discussionmentioning

confidence: 52%

Section: Discussionmentioning

confidence: 87%

Metazoan parasite communities of Leporinus macrocephalus (Characiformes: Anostomidae) in cultivation systems in the western Amazon, Brazil

Martins

Justo²,

Cárdenas³

et al. 2017

Acta Amaz.

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“…Moreover, the knowledge about parasites community infracommunities and their relationship with the host fish is of great importance, because the parasites also play a key role in ecosystems by regulating the abundance or density of natural fish populations, thus stabilizing food web and host community structures (MOREIRA et al, 2009;MORLEY, 2012;TAVARES-DIAS et al, 2013;OLIVEIRA et al, 2016 (MACHADO, 1959;KRITSKY et al, 1992;COHEN et al, 2013;COSTA-PEREIRA et al, 2014;OLIVEIRA et al, 2016). However, there are no studies on the parasites of T. rotundatus.…”

Section: Communities Of Parasites In Triportheus Rotundatusmentioning

confidence: 99%

“…The Igarapé Fortaleza basin, located at the estuarine coastal sector, is characterized for having a river system with extensive floodplains, which is drained by fresh water and connected to a main watercourse, influenced by high rainfalls and tides (every 12 hours) from the Amazonas River (TAVARES-DIAS et al, 2013). This tributary of the Amazon River system harbors more than 80 species of freshwater fish (GAMA & HALBOTH, 2004), including Characiformes species of the genus Triportheus Cope, 1872, which are popularly known as freshwater sardines and represents an important resource for artisanal fishing and subsistence of human population in the region.…”

Section: Communities Of Parasites In Triportheus Rotundatusmentioning

confidence: 99%

“…Studies on parasitic fauna aspects should be directed to T. rotundatus, due to the importance of knowledge on several factors that could influence the diversity and structure of the parasite infracommunities in fish populations (MOREIRA et al, 2009;LAGRUE et al, 2011;TAVARES-DIAS et al, 2013;COSTA-PEREIRA et al, 2014;OLIVEIRA et al, 2016). Moreover, the knowledge about parasites community infracommunities and their relationship with the host fish is of great importance, because the parasites also play a key role in ecosystems by regulating the abundance or density of natural fish populations, thus stabilizing food web and host community structures (MOREIRA et al, 2009;MORLEY, 2012;TAVARES-DIAS et al, 2013;OLIVEIRA et al, 2016 (MACHADO, 1959;KRITSKY et al, 1992;COHEN et al, 2013;COSTA-PEREIRA et al, 2014;OLIVEIRA 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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Structure of parasites community in Chaetobranchopsis orbicularis (Cichlidae), a host from the Amazon River system in northern Brazil

Tavares‐Dias¹,

Oliveira²

2017

Parasitol Res

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The aim of this paper was to investigate the component communities of parasites in Chaetobranchopsis orbicularis from a tributary of the Amazon River system, in Northern Brazil. In 32 fish examined, 902,551 parasites were collected, including Ichthyophthirius multifiliis, Piscinoodinium pillulare, Sciadicleithrum geophagi, Posthodiplostomum sp., Clinostomum marginatum, Echinorhynchus paranensis, Neoechinorhynchus pterodoridis, and Dolops longicauda. I. multifiliis was the dominant and abundant parasite species. The ectoparasites presented aggregate dispersion, but the endoparasites showed random dispersion pattern. Mean species richness was 4.0 ± 1.5 parasites, mean Brillouin diversity (HB) was 0.33 ± 0.28, mean evenness was 0.15 ± 0.13, and Berger-Parker dominance (d) was 0.85 ± 0.17. The species richness of parasites and HB were positively correlated with the length of hosts. There was positive correlation between the abundance of P. pillulare and length and weight, between the abundance of I. multifiliis and weight, as well as between the abundance of E. paranensis and N. pterodoridis and the length of hosts. Body condition of the hosts was not affected by moderate parasitism. The low diversity of endoparasites indicates that C. orbicularis is a host with low position in the food web. This is the first record of all these parasites for C. orbicularis.

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<b>Parasites in <i>Curimata cyprinoides</i> (Characiformes: Curimatidae) from eastern Amazon, Brazil</b> - doi: 10.4025/actascibiolsci.v35i4.19649

Cited by 17 publications

References 20 publications

Metazoan parasite communities of Leporinus macrocephalus (Characiformes: Anostomidae) in cultivation systems in the western Amazon, Brazil

Metazoan parasite communities of Leporinus macrocephalus (Characiformes: Anostomidae) in cultivation systems in the western Amazon, Brazil

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

Structure of parasites community in Chaetobranchopsis orbicularis (Cichlidae), a host from the Amazon River system in northern Brazil

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