北西北太平洋に生息するミンククジラの寄生虫相

内田明彦1)   荒木  潤2)

1)麻布大学環境保健学部(〒229-8501 相模原市淵野辺1-17-71)
2)目黒寄生虫館(〒153-0064 東京都目黒区下目黒4-1-1)

(1999年5月27日受付・1999年9月2日受理)

要     約

 1995年(6〜8月)および1996年(7〜9月)に北西北太平洋(北緯35〜52度,東経140〜170度)で捕獲された177頭(雌:21頭,雄:156頭)のミンククジラについて外部・内部寄生虫相を調査した結果,外部寄生虫3種; クジライカリムシPennella balaenoptera(68.4%),クジラシラミCyamus balaenoptera(5.1%),Xenobalanus globicipitis(1.1%),内部寄生虫6種; Anisakis simplex(89.8%),クジラ大複殖門条虫Diplogonoporus balaenoptera(13.0%),大卵裂頭条虫Diphyllobothrium macroovatum(13.0%),Tetrabothrius sp.(4.5%),クジラ肝蛭Lecithodesmus goliath(59.9%)およびクジラ鉤頭虫Bolbsoma nipponicum(100.0%)が検出された.
―キーワード:外部寄生虫,内部寄生虫,ミンククジラ,北西北太平洋

--------------------日獣会誌 53,85〜88(2000)


The Ectoparasites and Endoparasites in the Minke Whale, Balaenopteraacutorostrata from the Western North Pacific Ocean

Akihiko UCHIDA* and Jun ARAKI

*College of Environmental Health, Azabu University, 1-17-71 Fuchinobe, Sagamihara 229-8501,Japan

SUMMARY

 A Parasitological survey was conducted of minke whales (Balaenoptera acutorostrata) from the Western North Pacific Ocean in June〜August 1995 and July〜September 1996. A total of minke whales were captured in waters from 35〜52°N and 140〜170°E. The ecto- and endo parasites found were as follows (prevalence): the copepod Pennella balaenoptera (68.4%); the amphipod (whale louse) Cyamus balaenoptera (5.1%); the trematode Lecithodesmus goliath (59.9%); the cestodes Diphyllobothrium macroovatum (13.0%); Diplogonoporus balaenoptera (13.0%); Tetrabothrius sp. (4.5%); the nematode Anisakis simplex (89.8%); and the acanthocephalan Bolbosoma nipponicum (100%). Two species of epizoits, Xenobalanus globicipitis (1.1%) and Conchoderma virgatum, were also collected.
―Key words : ectoparasite, endoparasite, minke whale, Western North Pacific Ocean.

--------------------J. Jpn. Vet. Med. Assoc., 53, 85〜88(2000)