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Title: 山形県産ベニクラゲ(ヒドロ虫綱, 花クラゲ目)の85年ぶりの発見と型の決定
Other Titles: Rediscovery of Turritopsis (Hydrozoa, Anthomedusae) from Yamagata Prefecture, Northern Japan after 85 years and determination of its form
Authors: 久保田, 信  kyouindb  KAKEN_id
渡辺, 葉平  KAKEN_name
奥泉, 和也  KAKEN_name
Author's alias: Kubota, Shin
Watanabe, Yohei
Okuizumi, Kazuya
Keywords: rediscovery
large form
Issue Date: 20-Dec-2007
Publisher: 日本生物地理学会
Journal title: 日本生物地理学会会報
Volume: 62
Start page: 73
End page: 75
Abstract: Turritopsis medusa was collected in 2007 0n the coast of Yamagata Prefecture, northern Japan, after 85 years of absence of this species. It is described with photographs after being reared in the laboratory for two months. The specimen appeared as a male medusa with 156 tentacles of three whorls and a scarlet-colored manubrium, and the umbrellar diameter was 6.2mm. It is a so-called large form of Turritopis in Japanese waters, though smaller than the well-known Pacific specimens of the same form.
日本海に面する山形県沿岸からは, 未成熟クラゲの採取記録がただ1度なされたベニクラゲTurritopis Sp.のクラゲが, 85年ぶりに最初の記録地である鶴岡市沿岸で2007年に採集された. このクラゲを2 ケ月間室内飼育して得られた1個体の雄クラゲは, 傘径が6.2 mm に達し, 3環列に配列した触手が156本見られた. 触手の配列と口柄の紅色から, わが国で形態的に2型が区別されているベニクラゲ類Turritopis spp.のうちの"大型"に区分された.
Rights: © 2007 日本生物地理学会
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