Bulletin of the Hiroshima University Museum Issue 7
2015-12-25 発行

目視観察による有明海表面付近におけるユウレイクラゲの密度推定 <原著論文>

Estimation of density of the semaestome jellyfish Cyanea nozakii Kishinouye, 1891 in surface waters of Ariake Sea by visual observation <Article>
Kondo, Yusuke
Okada, Shoma
Hashimoto, Shuichiro
Saito, Atsushi
Kataoka, Masashi
Tanaka, Hayato
Kato, Mikio
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abstract
We estimated the density of the semaestome jellyfish Cyanea nozakii Kishinouye, 1891 in the surface waters of Ariake Sea by visual observation in October 2014. The densities of the jellyfish were 3.2-19.4, 13.0-114.5, 4.3-110.2 individuals per 0.1 km2 along three respective lines, namely, Hayasaki Seto to Kumamoto Port (27 October, 12:35-15:35), Kumamoto Port to St-B (28 October, 8:15-10:15), and St-B to Kumamoto Port (29 October, 14:00-16:00). Our observational data showed that C. nozakii had a clumped distribution in the sea. The density of C. nozakii correlated negatively with wind speed.
description
本研究の一部は科学研究補助金(基盤研究(B),No.25304031)の援助を受けたものである。
subject
有明海
ユウレイクラゲ
密度
集中分布
Ariake Sea
Cyanea nozakii
density
clumped distribution
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