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フルテキストURLC020057000201.pdf ( 2.1MB ) 公開日 2010-04-28
タイトルDistribution and habitat preferences of sea urchin species in Shirikawa Bay, Yamaguchi, during the period from 2005 to 2007
作成者Kitazawa, Chisato
Kawasaki, Shinichiro
Nishimura, Hajime
Nakano, Michihiro
Yamaguchi, Tadashi
Yamanaka, Akira
作成者ヨミキタザワ, チサト
カワサキ, シンイチロウ
ニシムラ, ハジメ
ナカノ, ミチヒロ
ヤマグチ, タダシ
ヤマナカ, アキラ
作成者別表記北沢, 千里
山中, 明
作成者所属山口大学教育学部
内容記述(抄録等)We studied habitats of sea urchin species in Shirkawa Bay in Yamaguchi City, Yamaguchi Prefecture, during the period from June 2005 to June 2007. Nine species were identified from Shirikawa Bay, which included 6 families. Several hundreds of Scaphechinus mirabilis appeared in a sandy beach in only early spring, while some regular sea urchin species, the mature Hemicentrotus pulcherrimus and the smaller Anthocidaris crassispine than ones in a shore out of the bay, were found often under the rocks in a shore in the bay through these survey periods. Additionally, Pseudocentrotus depressus were always found in the subtidal zone in a shore in/out of the bay. In a muddy beach, the only mature Temnopleurus toreumaticus inhabited. These results suggested that each sea urchin species in Shirikawa Bay segregates the own habitat and that S. mirabilis may change their habitats for spawning. We also investigated the breeding seasons of H. pulcherrimus and T. toreumaticus in this area by chemical induction of spawning. H. pulcherrimus spawned mature gametes from the middle of December to the middle of April and T. toreumaticus did from June to the middle of November. These results indicate the possibility that the provision of mature gametes by these species for a whole year contributes to the developmental biology with sea urchins in this area.
本文言語eng
著者キーワードsea urchins
Shirikawa Bay
habitat
breading season
主題教育・教育学
資料タイプtext
ファイル形式application/pdf
出版者山口大学教育学部
出版者ヨミヤマグチ ダイガク キョウイクガクブ
NII資料タイプ紀要論文
ISSN1349-810X
NCIDAN00243950
学内刊行物(紀要等)山口大学教育学部研究論叢(第2部)
掲載誌名研究論叢. 自然科学
掲載誌名別表記Bulletin of the Faculty of Education, Yamaguchi University. Natural science
57
2
開始ページ95
終了ページ105
発行日2008-01-31
著者版/出版社版出版社版
リポジトリIDC020057000201
地域区分山口大学
URIhttp://www.lib.yamaguchi-u.ac.jp/yunoca/handle/C020057000201