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A New species of Tripartiella (Ciliophora: Trichodinidae) from Aequidens tetramerus (Perciformes: Cichlidae) in north Brazil. Repositório Alice
MARTINS, M. L.; MARCHIORI, N.; BITTENCOURT, L. S.; TAVARES-DIAS, M..
A new species of Tripartiella is described from the gills of the wild saddle cichlid Aequidens tetramerus in north Brazil. Wet smears of skin and gills of examined fish were air-dried at room temperature and impregnated with Klein?s dry silver method for examination of the adhesive disc?s structures and denticles. Total prevalence of parasitism was 65%. This ciliate is characterized as a small-sized trichodinid, body diameter 37.03 ± 4.9 μm, adhesive disc 30.50 ± 2.71 μm, denticulate ring 13.28 ± 0.8 μm and 24 ± 2.0 denticles. Taxonomic and morphometric data for the new species are discussed.
Tipo: Artigo de periódico Palavras-chave: Protozoan.; Morfologia; Morphology; Parasite animal; Peixe de água doce; Parasito de animal; Protozoário.; Freshwater fish..
Ano: 2016 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1045165
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First study on infestation of Excorallana berbicensis (Isopoda: Corallanidae) on six fishes in a reservoir in Brazilian Amazon during dry and rainy seasons. Repositório Alice
GENTIL-VASCONCELOS, H. C.; TAVARES-DIAS, M..
We analyzed the infestation levels of Excorallana berbicensis on Acestrorhynchus falcirostris, Ageneiosus ucayalensis, Geophagus proximus, Hemiodus unimaculatus, Psectrogaster falcata and Serrasalmus gibbus in a reservoir in the Araguari River basin, northern Brazil, during the dry and rainy seasons. For P. falcata, the infestation levels due to E. berbicensis were greater during the rainy season. For all the species studied, the peak parasite prevalence was in the month of highest rainfall levels and there were two peaks of parasite abundance: one in the month with highest rainfall level and the other in the month of transition from the rainy season to the dry season. In these hosts, around 70% of the E. berbicensis specimens were collected during the...
Tipo: Artigo de periódico Palavras-chave: Parasite animal; Parasito animal.; Climatologia; Variação sazonal.; Climatology; Seasonal variation..
Ano: 2015 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1030696
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Parasite diversity of Osteoglossum Bicirrhosum, an Osteoglossidae fish from Amazon. Repositório Alice
RODRIGUES, M. de N. G.; DIAS, M. K. R.; MARINHO, R. das G. B.; TAVARES-DIAS, M..
We investigated the ecological relationships between parasites and the host silver arowana Osteoglossum bicirrhosum Cuvier, 1829 from Amazonian basin, in Brazil. A total of 1,570.539 parasites belonging to different taxa were found including Ichthyophthirius multifiliis, Piscinoodinium pillulare (Protozoa), Gonocleithrum aruanae, Gonocleithrum planacrus, Gonocleithrum coenoideum (Monogenoidea) and Camallanus acaudatus (Nematoda); all had an aggregated dispersion.
Tipo: Artigo de periódico Palavras-chave: Fresh water fish; Parasite animal; Fator de condição.; Peixe de água doce; Parasito de animal; Condition factor..
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1006124
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Parasites component community in wild population of Pterophyllum scalare Schultze, 1823 and Mesonauta acora Castelnau, 1855, cichlids from the Brazilian Amazon. Repositório Alice
PANTOJA, W. M. F.; FLORES, L. V.; TAVARES-DIAS, M..
The aim of the present study was to compare the component parasite communities of the Pterophyllum scalare and Mesonauta acoracichlids in the Amazon River system in northern Brazil. From September to December 2012, 42 specimens of P. scalareand 38 specimens of M. acorawere captured using hand nets and gillnets in the Igarape Fortaleza basin, a tributary of the Amazon River in the state of Amapa. Of the P. scalarespecimens examined, 97.6% were parasitized by Ichthyophthirius multifiliis, Tripartiellasp., Trichodina nobilis, Gussevia spiralocirra, Posthodiplostomum sp., Capillaria pterophylli, Ichthyouris sp. and Gorytocephalus spectabilis. Similarly, all specimens of M. acorawere parasitized by I. multifiliis, Tripartiellasp,T. nobilis, Sciadicleithrum...
Tipo: Artigo de periódico Palavras-chave: Parasite animal; Parasito animal..
Ano: 2015 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1030674
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Seasonality affects the parasitism levels in two fish species in the eastern Amazon region. Repositório Alice
DIAS, M. K. R.; TAVARES-DIAS, M..
Fish parasite communities have strong interactions with the environment, the host fish, and the aquatic invertebrate communities. Thus, factors directly involving their different life cycles, such as different host populations and environments, as well as seasonal fluctuations in water levels can cause different responses. The main factors structuring parasite communities may be the hydrodynamic variations, together with seasonal variations in the availability of infectious stages of parasites in the environment. The purpose of this study was therefore to investigate the influence of the rainy and dry seasons on parasite infracommunities in fish species in the Amazon River System of Brazil. Between October 2009 and April 2011, specimens of Colossoma...
Tipo: Artigo de periódico Palavras-chave: Parasite animal; Parasito animal.; Climatologia; Variação sazonal.; Climatology; Seasonal variation..
Ano: 2015 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1030660
Registros recuperados: 5
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