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ID 43704
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title alternative
Infection of a big trematode in juvenile Japanese amberjack, Seriola quinqueradiata, cultured in Japan
creator
subject
海水養殖
吸虫類
魚類寄生虫
ブリ
Hirudinellidae
fish parasite
Japanese amberjack
mariculture
Seriola quinqueradiata
trematode
NDC
Zoology
abstract
高知県沿岸で養殖されていたブリSeriola quinqueradiata 幼魚2尾の筋肉に大型吸虫の寄生を認めた。この吸虫は各尾に1個体が寄生し,生時の体長約7–15mm で,わが国の養殖カンパチから報告されている「ヒルディネラ類吸虫」によく似ていた。寄生魚が見出されたのは2015年5月中旬で,養殖種苗はその約1か月前に高知県沖の北西太平洋で漁獲された。寄生魚の皮膚は寄生部位付近で凹凸を有し,筋肉には吸虫から排泄されたと考えられる黒色異物が見られた。
abstract
Two big trematodes, provisionally identified as a hirudinellid, were found individually in the muscle of two juveniles (ca. 150 mm fork length) of Japanese amberjack, Seriola quinqueradiata Temminck and Schlegel, 1845, cultured in mid-May 2015 in coastal waters of Tosa Bay off Kochi Prefecture, Shikoku, western Japan. The trematodes were 7-15 mm long in fresh conditions. The juveniles were caught in the western North Pacific Ocean off Kochi Prefecture around 10 April 2015 and then cultured in net pens. The body surface of the infected juveniles was uneven in the affected area, and black substances, probably excreted by the trematodes, were found in the host’s muscle.
journal title
Journal of the Graduate School of Biosphere Science, Hiroshima University
volume
Volume 55
start page
7
end page
12
date of issued
2016-12-25
publisher
広島大学大学院生物圏科学研究科
issn
1348-1371
ncid
language
jpn
nii type
Departmental Bulletin Paper
HU type
Departmental Bulletin Papers
DCMI type
text
format
application/pdf
text version
publisher
department
Graduate School of Biosphere Science
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