Blood Fluke Infection of Japanese Amberjack <i>Seriola quinqueradiata</i> in Fish Farms along the Western Coastal Area of Bungo Channel, Japan

• Fukuda Yutaka

  Fisheries Research Division, Oita Prefectural Agriculture, Forestry and Fisheries Research Center

• Miyamura Kazuyoshi

  Fisheries Management Division, Agriculture, Forestry and Fisheries Department, Oita Prefectural Government

• Hitaka Etsuhisa

  Oita Prefecture Southern Region Bureau

• Kimoto Keisuke

  Fisheries Research Division, Oita Prefectural Agriculture, Forestry and Fisheries Research Center

• Sanada Yasuhiro

  Oita Prefecture Central Region Bureau

• Asai Takayuki

  Oita Prefecture Southern Region Bureau

• Ogawa Kazuo

  Meguro Parasitological Museum

Bibliographic Information

Other Title

• Blood Fluke Infection of Japanese Amberjack Seriola quinqueradiata in Fish Farms along the Western Coastal Area of Bungo Channel, Japan

Abstract

Blood fluke infection among diseased Japanese amberjack Seriola quinqueradiata (n = 9,470) cultured in Oita Prefecture was monitored from 1992 to 2001. Infection was confirmed by the presence of parasite eggs accumulated in the gills. Amberjack with parasite eggs were found in all culture areas except for Usuki Bay. Eggs in the gills of 0-year-old fish started to be observed from early July, with the minimum body weight (BW) of 130 g in Yonouzu Bay, whereas in Nyuzu Bay egg-positive fish was first found in late August with the minimum BW of 296 g. Amberjack were cultured in the inner part of Nyuzu Bay up to the size of 200-250 g in BW, suggesting that infection occurred when fish were later moved to the mouth of the bay for further growth. In the inner part of Nyuzu Bay, hypoxia and conspicuously high dissolved inorganic nitrogen in the water near the bottom and acid volatile sulfides in the sediment were recorded every summer in the present survey. It is speculated that such extraordinary environment is unfavorable for the propagation of the intermediate host of the causative organism in the inner part, but not at the mouth, of the bay.

Journal

• Fish Pathology

  Fish Pathology 52 (4), 191-197, 2017

  The Japanese Society of Fish Pathology

Keywords

• <i>Seriola quinqueradiata</i>
• Japanese amberjack
• blood fluke
• distribution
• environmental factor
• Bungo Channel

Details

• CRID: 1390001206460373760
• NII Article ID: 130006321465
• NII Book ID: AN00063165
• DOI: 10.3147/jsfp.52.191
• ISSN: 18817335
• ISSN: 0388788X
• NDL BIB ID: 028773869
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I028773869
• Web Site: https://www.jstage.jst.go.jp/article/jsfp/52/4/52_191/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed