Title: Histopathological study of grass carp (Ctenopharyngodon idella) experimentally infected with Ichthyophthirius multifiliis
Abstract:Little information is available regarding the histopathological changes of grass carp (Ctenopharyngodon idella) after infection with Ichthyophthirius multii¬liis. In the present study, the pathologic...Little information is available regarding the histopathological changes of grass carp (Ctenopharyngodon idella) after infection with Ichthyophthirius multii¬liis. In the present study, the pathological changes of the gill, skin and muscle from the grass carp exposed to I. multii¬liis were observed experimentally by the light microscopy (LM) and transmission electron microscopy (TEM), respectively. Results showed that I. multifiliiswere observed in gill, skin and muscle sections of exposed fish and infections induced by this parasite were associated with epithelial hyperplasia, focal areas of cellular disruption and disappearance. Notably, the histological changes in ultrastructure of the mitochondria and nuclei, such as dislocation of nuclei, brown atrophy (pigmentation accumulation) destruction of striation were observed by TEM compared to control groups. In conclusion, the results obtained indicated that invasion intensified occurrence of morphological lesions in the gill, skin and muscle of grass carp exposed to I. multifiliis, which may lead torespiratory insufficiency of infected fish, bacterial or fungal secondary infection, and even cause mass mortality.
Key words: Ichthyophthirius multifiliis, grass carp (Ctenopharyngodon idella), pathological change, transmission electron microscopy (TEM), light microscopy (LM)Read More
Publication Year: 2012
Publication Date: 2012-04-16
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 8
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