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タイトルウスイロユスリカ(双翅目:ユスリカ科)の生物学的研究
タイトルヨミウスイロユスリカ ソウシモク : ユスリカ カ ノ セイブツガクテキケンキュウ
タイトル別表記Biology of Chironomus kiiensis : (Diptera : Chironomidae)^*
作成者前田, 光裕
矢野, 宏二
作成者ヨミマエダ, ミツヒロ
ヤノ, コウジ
作成者別表記Maeda, Mitsuhiro
Yano, Koji
作成者所属山口大学農学部
内容記述(抄録等)Biological studies of Chironomus kiiensis Tokunaga (Diptera : Chironomidae), one of the dominant paddy dwelling chironomid species in the Yamaguchi area, were made in 1979 and 1980 both in the laboratory and paddy fields. Morphological studies including frequency distribution of head width indicated that number of larval instars in four, and the first instar larvae lack lateral and ventral tubules I and II, the second instar larvae lack lateral tubules, and the third and fourth instar larvae have all blood gills. The larvae made undulations in their nests making usually an antero-posterior current, and turned periodically to change their orientation. Strong phototaxis was seen in the first instar larvae. It was less sensitive in the second instar larvae, and there was none in the third and fourth instar larvae. Emergence peaks of adults occurred between 20 : 00 and 21 : 30, and no emergences were seen between sunrise and around 15 : 00. Adult males showed greater longevity than females. Longevity under the condition with food was greater than that without food, and under the condition at 15℃ was greater than that at 25℃. Developmental period from hatching to emergence took 15 days at 25℃. The period between egg and emergence is estimated as about 17-18 days. The highest peak in the number of specimens collected by the Malaise trap occurred in early July, and the number decreased accordingly. Judging from rearing experiments and the Malaise trap collectoions, it is estimated that there may be 6 generations from late May to early September when water is available.
本文言語jpn
主題農学
資料タイプtext
出版者山口大学農学部
出版者ヨミヤマグチ ダイガク ノウガクブ
NII資料タイプ紀要論文
ISSN0513-1715
NCIDAN00244250
学内刊行物(紀要等)山口大学農学部学術報告
掲載誌名山口大学農学部学術報告
掲載誌名別表記Bulletin of the Faculty of Agriculture, Yamaguchi University
36
開始ページ31
終了ページ48
発行日1998
著者版/出版社版その他
リポジトリIDD490036000004
地域区分山口大学
URIhttp://www.lib.yamaguchi-u.ac.jp/yunoca/handle/D490036000004