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Metacercárias de Diplostomum (Austrodiplostomum) compactum Lutz, 1928 (Digenea, Diplostomidae) em peixes do rio Paraná, Brasil. Prevalência, sazonalidade e intensidade de infecção

Authors: Santos, Rosemeire de Souza; Pimenta, Franco Dani Akira; Martins, Maurício Laterça; Takahashi, Haroldo Kazuyuki; Marengoni, Nilton Garcia;

Metacercárias de Diplostomum (Austrodiplostomum) compactum Lutz, 1928 (Digenea, Diplostomidae) em peixes do rio Paraná, Brasil. Prevalência, sazonalidade e intensidade de infecção

Abstract

Avaliou-se a ocorrência de Diplostomum (Austrodiplostomum) compactum (Digenea: Diplostomidae) no globo ocular de Plagioscion squamosissimus (corvina) e Cichla ocellaris (tucunaré), capturados mensalmente, no rio Paraná, Presidente Epitácio, Estado de São Paulo, Brasil. De 61 corvinas analisadas, 56 estavam parasitadas (92%) com intensidade média de 42,0 parasitos por hospedeiro. De 81 tucunarés, 45 estavam parasitados (55%) com intensidade média de 9,3 parasitos. A corvina apresentou prevalências de 71 a 100% e as maiores intensidades médias (103,3 e 106,9) nos meses de fevereiro e março/2001. Comparativamente, o tucunaré apresentou as mais altas prevalências nos meses de novembro/2000 (90%) e fevereiro/2001 (80%). As mais altas intensidades médias no tucunaré ocorreram em setembro/2000 (12,7), dezembro/2000 (12,2) e fevereiro/2001 (16,1). As metacercárias apresentam o corpo côncavo ventralmente e na região posterior existe uma sinuosa protuberância cônica. A ventosa oral menor do que o acetábulo. Acetábulo simples situado na região pré-equatorial do helminto. Pré-faringe curta seguida de faringe musculosa. Poro genital situado próximo da altura do acetábulo. As metacercárias da corvina apresentam 1.434,0 µm (880 a 1.840) de comprimento por 611,2±93,4 µm (400 a 792) de largura e as do tucunaré 1.462,4 µm (960 a 2.480) por 710,8 µm (560 a 960). Os autores confirmaram a maior susceptibilidade da corvina ao Diplostomum e a relação do parasitismo com os parâmetros aquáticos e climáticos.

Country
Brazil
Keywords

pharynx, QH301-705.5, plagioscion squamosissimus, river, parasitism, genital system, infection rate, sazonalidade, Cichla, Microbiology, animal parasitosis, cichla ocellaris, Plagioscion squamosissimus, prevalência, Cuchla ocellaris, Diplostomatidae, Seasoning, Prevalence, Animalia, Biology (General), helminth, Vermes, fish, seasonal variation, nonhuman, morphometrics, Description, Diplostomum compactum, Plagioscion, eye, QR1-502, Diplostomum, parameter, Pisces, diplostomum compactum, descrição, Brazil, parasite prevalence, Cichla ocellaris

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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