青木,中綱及び木崎湖の魚類に就て 1. コヒ・フナ
スポンサーリンク
概要
- 論文の詳細を見る
Investigations on the age-composition, body length l, weight w and depth, and the quality indicator, 1000 w/l8, of carps and of crucians from the three lakes mentioned in the title lead to the conclnsions: - (1) That all carps experimented were two years old and in their growth rate, lake Kizaki, being of eutrophyc type, was superior to the other two. (2) The age composition of crucians was normal in lake Kizaki, but abnormal in the other lakes. Such abnormality seems to have bearings on the variation in catch and in the number of snowy days during the year when each year class was hatched. Dimensions of the body were poor in lake Nakatuna, while the quality indicator was low in the oligotrophyc lake Aoki.
論文 | ランダム
- 憲法と有事法制--サイバー攻撃からの国民保護
- 旧岩崎邸庭園 (特集 国宝! 重要文化財!--建築を見に行こう) -- (職人に聞く、修復保存の現場)
- 旧岩崎邸庭園和館 (特集 東京 和の建築を見る)
- 場の磁力(15)旧岩崎邸庭園 邸が語る三菱財閥一族の盛衰
- 管理・運営 平成19年度旧岩崎邸庭園洋館等修理工事の概要