Phylogeny, ultrastructure, histopathology and prevalence of Myxobolus oliveirai sp. nov., a parasite of Brycon hilarii (Characidae) in the Pantanal wetland, Brazil

Milanin, Tiago; Eiras, J. C.; Arana, Sarah; Maia, Antônio Augusto Mendes; Alves, Anderson Luís; Silva, Márcia Ramos Monteiro da; Carriero, Mateus Maldonado; Ceccarelli, Paulo S.; Adriano, Edson A.

doi:10.1590/s0074-02762010000600006

Cited by 40 publications

(25 citation statements)

References 37 publications

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“…has many similarities with other previously described myxozoan species [4,[30][31][32][33] with numerous mitochondria, generative cells, and pansporoblasts in different developmental stages and immature spores viewed below the ectoplasm layer, and mature spores in the deeper layer of the plasmodia, characterizing asynchronic development. A connective tissue layer composed of a thin colagenic fibril layer and fibroblast surrounded the plasmodium, as also pointed by others authors [5,34,35].…”

Section: Discussionsupporting

confidence: 72%

“…For this study, sixteen adult specimens of P. costatus (with average size of 34 [32][33][34][35][36][37][38][39][40] cm) were collected from the São Francisco River, in the city of Pirapora, Minas Gerais state, Brazil (17°12′75″S, 44°50′95″ W) in December 2011. The methodology of the present study was approved by the ethics research committee of Federal University of São Paulo (CEP: 0128/12), and is in accordance with Brazilian law.…”

Section: Methodsmentioning

confidence: 99%

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Morphology, ultrastructure and phylogeny of Myxobolus curimatae n. sp. (Myxozoa: Myxosporea) a parasite of Prochilodus costatus (Teleostei: Prochilodontidae) from the São Francisco River, Brazil

Zatti

Naldoni

Silva

et al. 2015

Parasitology International

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Section: Discussionsupporting

confidence: 72%

Section: Methodsmentioning

confidence: 99%

Morphology, ultrastructure and phylogeny of Myxobolus curimatae n. sp. (Myxozoa: Myxosporea) a parasite of Prochilodus costatus (Teleostei: Prochilodontidae) from the São Francisco River, Brazil

Zatti

Naldoni

Silva

et al. 2015

Parasitology International

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“…A number of authors have described similar findings (Gbankoto et al 2001;Viozzi and Flores 2003;Milanin et al 2010). However, other authors have reported significant difference between females and males regarding the prevalence of infection (Muzzall 1995;Gbankoto et al 2003).…”

Section: Discussionsupporting

confidence: 58%

Morphology and host–parasite interaction of Henneguya azevedoi n. sp., parasite of gills of Leporinus obtusidens from Mogi-Guaçu River, Brazil

et al. 2011

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Henneguya azevedoi n. sp. is described from the piava (Leporinus obtusidens). Between 2005 and 2007, 60 fish were collected from the Mogi-Guaçu River near Cachoeira de Emas Falls located in the municipality of Pirassununga, state of São Paulo, Brazil. A total of 70% had plasmodia of the parasite. The plasmodia were white, spherical, and measured 40-200 μm in diameter. Histopathological analysis revealed that the development of the parasite was intralamellar and caused stretching of the epithelium, with accentuated deformation, as well as compression of the capillary and adjacent tissues. Ultrastructural analysis revealed that the wall of the plasmodium was a single membrane in direct contact with the host cells and contained pinocytic canals that extended into the plasmodium. The development of the parasite was asynchronous, with the earliest stages at the periphery and mature spores in the central region. Mature spores were elongated in the frontal view [mean ± standard deviation (range)]: 45.2 ± 0.6 (45.0-47.0) μm in total length, 10.0 ± 0.07 (9.9-10.2) μm in body length, 35.6 ± 0.9 (34.9-36.5) μm in caudal process length, and 4.4 ± 0.4 (4.0-5.0) μm in body width. The polar capsules were elongated and equal in size: 3.8 ± 0.3 (3.5-4.0) μm in length and 1.0 μm in width. The polar filaments were coiled in six to seven turns and perpendicular to the axis of the capsule. Scanning electron microscopy revealed smooth valves and a conspicuous rim around the spore body. This is the first time that a myxosporean has been reported in L. obtusidens.

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“…The parasite fauna of these Brycon species is not yet well known -as most of the published studies regarding the parasite fauna of the Brycon genus were conducted on fish farms or were based on taxonomic descriptions (Andrade et al 2001;Lemos et al 2007;Milanin et al 2010).…”

Section: Fauna Endoparasitária Dementioning

confidence: 99%

Endoparasite fauna of Brycon amazonicus and B. melanopterus(Characidae, Bryconinae) from Negro and Solimões rivers, Amazon, Brazil

et al. 2016

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Congeneric host species present similar biological and behavioral aspects, what may favor the presence of a similar parasite fauna. The aim of the present study was to compare the composition and structure of the parasite community from congeneric species, Brycon amazonicus and B. melanopterus, collected on the Negro and Solimões Rivers. The fish internal organs were longitudinally opened and analyzed under stereomicroscope. The examination revealed that B. amazonicus was parasitized by Procamallanus (Spirocamallanus) inopinatus (26.7% and 35.5%), Contracaecum type 2 (10% and 16.13%) and Rhabdochona acuminata (0% and 3.23%), prevalence values for Negro and Solimões River, respectively. The analysis of B. melanopterus, a fish species found only in the Solimões River, revealed P. (S.) inopinatus (33.3%), Contracaecum type 1 (60%) and R. acuminata (3.34%). These results indicate that the taxonomic proximity of the hosts was a stronger influence on the parasite species than external host environment. KEYWORDS: Negro River, Solimões River, 'matrinxã', metazoan parasites, nematode. Fauna endoparasitária deBrycon amazonicus e B. melanopterus (Characidae, Bryconinae) dos rios Negro e Solimões, Amazônia, Brasil RESUMO Espécies hospedeiras congenéricas apresentam aspectos biológicos e comportamentais semelhantes, o que pode favorecer a presença de uma fauna de parasitas semelhantes. O objetivo do presente estudo foi comparar a composição e a estrutura da comunidade parasitária de espécies congêneres, Brycon amazonicus e B. melanopterus, coletados nos rios Negro e Solimões. Os órgãos internos dos peixes foram longitudinalmente abertos e analisados com o auxílio de estereomicroscópio. O exame revelou que B. amazonicus foi parasitada por Procamallanus (Spirocamallanus) inopinatus (26,7% e 35,5%), tipo Contracaecum 2 (10% e 16,13%) e Rhabdochona acuminata (0% e 3,23%), os valores de prevalência para os rios Negro e Solimões, respectivamente. A análise de B. melanopterus, uma espécie de peixe encontradas somente no Rio Solimões, revelou P. (S.) inopinatus (33,3%), Contracaecum tipo 1 (60%) e R. acuminata (3,34%). Estes resultados indicam que a proximidade taxonômica dos hospedeiros foi uma influência mais forte sobre as espécies de parasitas do que ambiente externo ao peixe. PALAVRAS-CHAVE: Rio Negro, Rio Solimões, parasitos metazoários, 'matrinxã', nematóides. ACTAAMAZONICA Endoparasite fauna of Brycon amazonicus and B. melanopterus (Characidae, Bryconinae) from Negro and Solimões rivers, Amazon, Brazil

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Phylogeny, ultrastructure, histopathology and prevalence of Myxobolus oliveirai sp. nov., a parasite of Brycon hilarii (Characidae) in the Pantanal wetland, Brazil

Cited by 40 publications

References 37 publications

Morphology, ultrastructure and phylogeny of Myxobolus curimatae n. sp. (Myxozoa: Myxosporea) a parasite of Prochilodus costatus (Teleostei: Prochilodontidae) from the São Francisco River, Brazil

Morphology, ultrastructure and phylogeny of Myxobolus curimatae n. sp. (Myxozoa: Myxosporea) a parasite of Prochilodus costatus (Teleostei: Prochilodontidae) from the São Francisco River, Brazil

Morphology and host–parasite interaction of Henneguya azevedoi n. sp., parasite of gills of Leporinus obtusidens from Mogi-Guaçu River, Brazil

Endoparasite fauna of Brycon amazonicus and B. melanopterus(Characidae, Bryconinae) from Negro and Solimões rivers, Amazon, Brazil

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