A New Microsporidian Disease of Rainbow Trout Oncorhynchus mykiss Farmed in Shiga Prefecture, Japan, and Possible Involvement of Common Prawn Palaemon paucidens for Transmission of the Pathogen

• Yamamoto Michitaka

  Shiga Prefectural Fisheries Experiment Station Present address: Shiga Prefecture Fisheries Management Division

• Shirakashi Sho

  Aquaculture Research Institute, Kindai University

• Asai Nanami

  Aquaculture Research Institute, Kindai University

• Yanagida Tetsuya

  Laboratory of Parasitology, Joint Faculty of Veterinary Medicine, Yamaguchi University

• Sugahara Kazuhiro

  Shiga Prefectural Fisheries Experiment Station

• Yokoyama Hiroshi

  Faculty of Veterinary Medicine, Okayama University of Science

書誌事項

タイトル別名

• A New Microsporidian Disease of Rainbow Trout <i>Oncorhynchus mykiss</i> Farmed in Shiga Prefecture, Japan, and Possible Involvement of Common Prawn <i>Palaemon paucidens</i> for Transmission of the Pathogen

抄録

A microsporidian disease showing abnormal petechiae-like red spots on the trunk muscle, beneath the skin, occurred among rainbow trout Oncorhynchus mykiss farmed in Shiga Prefecture. ​Numerous microsporidian spores were detected from the affected area and the causative agent was identified as a microsporidian closely related to Kabatana takedai based on morphology and molecular analyses. ​Anecdotal information indicated the possible involvement of common prawn Palaemon paucidens for the transmission of the pathogen. ​Three prawn feeding trials using O. mykiss and Biwa trout Oncorhynchus masou subsp. successfully reproduced the disease in both fish species. ​The microsporidian infections were confirmed in the fish given fresh and chilled prawns and mortalities occurred in these groups. ​No infection occurred in the groups fed with frozen prawn. ​These results strongly suggest that the microsporidian infections can be lethal to Oncorhynchus spp. and that P. paucidens plays important role in the transmission of the pathogen. ​These findings may lead to the elucidation of the multi-host lifecycle of fish microsporidians.

収録刊行物

• 魚病研究

  魚病研究 56 (3), 130-139, 2021-09-15

  日本魚病学会

キーワード

• Microsporidia
• <i> Kabatana</i>
• petechiae
• rainbow trout
• <i>Palaemon</i>
• SSU rDNA
• Lake Biwa

詳細情報

• CRID: 1390852581592873728
• NII論文ID: 130008101899
• NII書誌ID: AN00063165
• DOI: 10.3147/jsfp.56.130
• ISSN: 18817335
• ISSN: 0388788X
• NDL書誌ID: 031738729
• Web Site: http://id.ndl.go.jp/bib/031738729
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I031738729
• Web Site: https://www.jstage.jst.go.jp/article/jsfp/56/3/56_130/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可