著者

上野 紘一 岩井 修一 小島 吉雄

出版者

公益社団法人 日本水産学会

雑誌

日本水産学会誌 (ISSN:00215392)

巻号頁・発行日

vol.46, no.1, pp.9-18, 1980-01-25 (Released:2008-02-29)

参考文献数

19

被引用文献数

7 11 6

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Karyotypes of three spinous loaches, Cobitis biwae, C. taenia taenia and C. taenia striata from western Japan were investigated. As the result, chromosome polymorphisms and polyploid (tetraploid) were observed in these species. (1) C. biwae: Diploid specimens showed 48 chromosomes in 2n number. There were three types in chromosome constitutions such as 22M+20SM, ST+6A, 20M+20SM, ST+8A and 20m+18SM, ST+10A. On the other hand, teraploid specimens were characterized by 96 chromosomes which consisted of 38M+54SM, ST+20A. (2) C. taenia taenia: Diploid specimens with 50 chromosomes were characterized by 12M+4SM+34A. In the tetraploid forms, two types of individuals with 86 and 94 chromosome numbers were foud. These complements were made up of 32M+32SM, ST+22A in the former, and 26M+32SM, ST+36A in the latter. (3) C. taenia striata: Diploid form was the same as that of C. taenia taenia, whereas tetraploid form possessed 98 chromosomes consisting of 20M+22SM, ST+56A. (4) The geographical distribution on each group with different karyotypes showed that they have their own habitats forming respective isolated associations. Systematics and speciation in three species of Cobitidae were discussed on the bases of the karyotypic differentiation and habitat segregation.

著者

浅木 茂 西村 敏明 岩井 修一 北村 英武 増田 幸久 迫 研一 佐藤 玄徳 渋木 諭 榛沢 清昭 佐藤 彰 大方 俊樹 後藤 由夫

出版者

Japan Gastroenterological Endoscopy Society

雑誌

日本消化器内視鏡学会雑誌 (ISSN:03871207)

巻号頁・発行日

vol.23, no.6, pp.792-798_1, 1981-06-20 (Released:2011-05-09)

参考文献数

25

被引用文献数

6

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著者らは,高周波電流による内視鏡的胃ポリペクトミー時の大出血例7症例と,緊急内視鏡検査で,大出血のため止血が必要と判断した出血性胃・十二指腸潰瘍9例の出血部に,直視下に99.5%エタノールまたは純エタノールを局注し,全例止血に成功した.局注止血後の再出血例はなく全身状態の急速な改善がみられ,全例外科的処置を必要とせず内科的に管理できた.本法は操作が簡単で,出血血管の周囲に適確に局注できる内視鏡のエキスパートであれば誰れでも,どこででもできる方法で,静脈瘤以外の出血に対して効果的な止血法と考える.