Histopathology of Gill Lesions in Channel Catfish Associated with Henneguya
نویسندگان
چکیده
منابع مشابه
Ultrastructure of interlamellar Henneguya exilis in the channel catfish.
Ultrastructural aspects of interlamellar Henneguya exilis infections in channel catfish are reported. The plasmodium wall of this form differs from that of other species in that it is composed of two outer unit membranes which give rise to a zone of numerous pinocytic canals. Single-membraned canals appeared to be a stable feature of the wall while double-membraned canals are interpreted as tho...
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This study describes aspects of the infection caused by the myxosporean genus Henneguya, which forms cysts in the bony portion of the gill filaments of Hypophthalmusmarginatus. Specimens of this catfish were acquired dead from artisanal fishermen near the town of Cametá, state of Pará, northern Brazil, between July 2011 and May 2012. They were transported in refrigerated containers to the Carlo...
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Nowadays, silver nanoparticles have very important application in different industries mainly because of the antimicrobial activity. The purpose of this investigation was to evaluate the possible effects of silver nanoparticles in comparison with the silver ions (as silver nitrate) on some histopathological alterations in gill of rainbow catfish. Eighty-five individual of rainbow Catfish (12 ±0...
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Chlorothalonil (2,4,5,6-tetrachloroisophthalonitrile) is a broad spectrum fungicide that is a potent acute toxicant to fish. Therefore, the metabolism of chlorothalonil was investigated in liver and gill cytosolic and microsomal fractions from channel catfish (Ictalurus punctatus) using HPLC. All fractions catalyzed the metabolism of chlorothalonil to polar metabolites. Chlorothalonil metabolis...
متن کاملA new species of Henneguya, a gill parasite of Astyanax altiparanae (Pisces: Characidae) from Brazil, with comments on histopathology and seasonality.
A new species of Myxosporea, Henneguya chydadea, is described parasitizing the gills of Astyanax altiparanae collected from a lake on Rio das Pedras farm near Campinas, state of São Paulo, Brazil. Of the fish examined, 88.3% had gills parasitized by myxosporeans. The prevalence of the parasite ranged from 80% in the spring and fall, 93% in the summer and 100% in the winter. The parasite induced...
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ژورنال
عنوان ژورنال: Journal of Wildlife Diseases
سال: 1985
ISSN: 0090-3558
DOI: 10.7589/0090-3558-21.2.177