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<p>Manipur, a state in North-east India has favourable climatic condition for aquaculture industry especially fish culture. To meet the high demand of fish in the region, various fish species were imported from other states. Among them, <i>Wallago attu</i> is one of the important species, due to its high demand for its unique taste and flavour, in addition to its great nutritional value. The present study reported infection of the zoonotic parasite <i>Isoparorchis</i> sp. in swim bladder of the imported freshwater <i>Wallago attu</i> (family Isoparorchiidae) in Manipur. Molecular techniques using PCR amplification and sequencing of rDNA inter transcribed spacer 2 (ITS2) and larger subunit (LSU or 28&#xa0;S), respectively have been utilized to characterize the parasite. The sequences generated from the parasite were compared with related sequences retrieved from the public domain and were used for phylogenetic tree construction that confirmed their identification. Thus, the present study confirmed the infection of the imported freshwater fish with zoonotic parasite. As the imported fish was in frozen state, the parasites recovered were also in inactive state. But the toxins produced by the parasites could still cause human illness. So, further studies need to be carried out in the region by covering other imported fish species, to understand the risk for any infection with any zoonotic parasite.</p>

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Molecular characterization of zoonotic parasite Isoparorchis trisimilitubis (Digenea: Isoparorchiidae) in imported freshwater fish Wallago attu in Manipur, India

  • 期刊论文

  • 发表日期：

    2026年3月12日

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  • Voleentina Devi Athokpam

摘要

Manipur, a state in North-east India has favourable climatic condition for aquaculture industry especially fish culture. To meet the high demand of fish in the region, various fish species were imported from other states. Among them, Wallago attu is one of the important species, due to its high demand for its unique taste and flavour, in addition to its great nutritional value. The present study reported infection of the zoonotic parasite Isoparorchis sp. in swim bladder of the imported freshwater Wallago attu (family Isoparorchiidae) in Manipur. Molecular techniques using PCR amplification and sequencing of rDNA inter transcribed spacer 2 (ITS2) and larger subunit (LSU or 28 S), respectively have been utilized to characterize the parasite. The sequences generated from the parasite were compared with related sequences retrieved from the public domain and were used for phylogenetic tree construction that confirmed their identification. Thus, the present study confirmed the infection of the imported freshwater fish with zoonotic parasite. As the imported fish was in frozen state, the parasites recovered were also in inactive state. But the toxins produced by the parasites could still cause human illness. So, further studies need to be carried out in the region by covering other imported fish species, to understand the risk for any infection with any zoonotic parasite.