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Wild fish of aquaculture importance, as new host for isopod Tachaea spongillicola Stebbing, 1907 infestation with emphasis on prevalence and histopathology: A case report.

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Title Wild fish of aquaculture importance, as new host for isopod Tachaea spongillicola Stebbing, 1907 infestation with emphasis on prevalence and histopathology: A case report.
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Creator Sahoo AK, Sadhukhan D, Meena DK, Das T, Raman RK, Udgata SK, Shashikala KB, Mitra S and Das BK
 
Subject EctoparasiteIsopod infestationFreshwater fishesReservoirHistopathology
 
Description Not Available
The study reported an ectoparasitic isopod, Tachaea spongillicola infestation in fish as new host, in wild caught species of Labeo rohita and Cirrhinus mrigala of family Cyprinidae and Notopterus notopterus of family Notopteridae from reservoir ecosystem. The prevalence of infestation was 100% in all the three fish species with mean intensity 29% for C. mrigala followed by 25% in L. rohita and 11% in N. notopterus. The Mann-Whitney U test analysis showed a significant (p < 0.01) difference between C. mrigala and N. notopterus, and L. rohita and N. notopterus, while no significant (p = 0.15) difference was observed between C. mrigala and L. rohita, underlining the preference of parasitic infestation towards carps species, that contributes a major share to the world's fish production. T. spongillicola infestation resulted in interesting pathology of conspicuous gill lamellae necrosis, like chondroptosis, and thinning of cartilaginous matrix resulting in curvature of primary gill lamella were recorded. In addition, rupture of pillar cells, erythrocytes migration through epithelial rupture, hypertrophied erythrocytes, extensive proliferation and hypertrophy goblet cells were observed in gills. Till date, Tachaea spp. is being reported as ectoparasites in shrimps and with few cases in sponges. This is the first report of Tachaea sp. viz. Tachaea spongillicola as ectoparasite, recorded in fish species, since after 114 years of its first record in freshwater sponge. As these fish species particularly of Indian major carps, are widely cultured in South Asian and Southeast Asian countries, knowledge on T. spongillicola infestation in fish would add on parasitic diseases list for better preparedness in open water aquaculture system.
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Date 2022-06-25T12:30:07Z
2022-06-25T12:30:07Z
2021-01-01
 
Type Research Paper
 
Identifier Not Available
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http://krishi.icar.gov.in/jspui/handle/123456789/73467
 
Language English
 
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Publisher Not Available