文献一覧: 00445118 (ISSN) - Ceek.jp Altmetrics

More than 1, 500 frogs of Rana limnocharis were collected in Kumamoto district and used for a morphological study on the differentiation of their gonads. Results obtained were as follows: 1) Shortly after metamorphosis the gonads of all young frogs are of ovarian type in external appearance at least. But as they grow older, the gonads in about a half of them become testes, which are distinguishable macroscopically from the ovaries. This sex ratio is established at the end of the first year. 2) Examining the gonads microscopically at the end of metamorphosis, the gonads of the genetic males have a testicular structure, and in about a half of them the oocyte-like cells are present. 3) Although most of the oocyte-like cells degenerate during the first year, some of them remain and continue their growth in the following year. But they seldom attain about 150μ in diameter.

2020-10-23 05:25:30
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https://ci.nii.ac.jp/naid/110003360772

1 0 0 0 樺太産ホホヒゲカウモリ屬の一新種

著者: 吉倉眞
出版者: 社団法人日本動物学会
雑誌: 動物学雑誌 (ISSN:00445118)
巻号頁・発行日: vol.56, no.1, pp.6-7, 1944-03-15
被引用文献数: 1

2020-10-23 05:25:30
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https://ci.nii.ac.jp/naid/110004724794

1 0 0 0 甲状腺が蛙の性転換に関係していること(実験形態・発生)

著者: 吉倉真
出版者: 社団法人日本動物学会
雑誌: 動物学雑誌 (ISSN:00445118)
巻号頁・発行日: vol.71, no.11, pp.351-352, 1962-12-15

2020-10-23 05:25:30
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https://ci.nii.ac.jp/naid/110003331952

1 0 0 0 II-3 クモ類の進化

著者: 吉倉真
出版者: 社団法人日本動物学会
雑誌: 動物学雑誌 (ISSN:00445118)
巻号頁・発行日: vol.79, no.11, 1970-12-15

2020-10-23 05:25:30
1 + 2 Wikipedia

https://ci.nii.ac.jp/naid/110003328801

1 0 0 0 キムラグモ(Heptathela kimurai)の発生

著者: 吉倉眞
出版者: 社団法人日本動物学会
雑誌: 動物学雑誌 (ISSN:00445118)
巻号頁・発行日: vol.61, no.3, 1952-04-15

2020-10-23 05:25:30
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https://ci.nii.ac.jp/naid/110004586588

1 0 0 0 綜合討論(発生・実験形態)

著者: 天沼昭吉倉真宮森弘子中村司朝山新一森田真一吉田博一
出版者: 社団法人日本動物学会
雑誌: 動物学雑誌 (ISSN:00445118)
巻号頁・発行日: vol.68, no.2, 1959-03-15

2020-10-23 05:25:30
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https://ci.nii.ac.jp/naid/110003362828

1 0 0 0 ヌマガエルの性(遺伝学・発生学・実験形態学)

著者: 吉倉真
出版者: 社団法人日本動物学会
雑誌: 動物学雑誌 (ISSN:00445118)
巻号頁・発行日: vol.65, no.3, 1956-04-15

2020-10-23 05:25:30
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https://ci.nii.ac.jp/naid/110003361978

1 0 0 0 綜合討論(発生学・実験形態学)

著者: 武藤義信朝山新一吉倉真小川嘉一郎江上信雄只野柳佐藤磐根
出版者: 社団法人日本動物学会
雑誌: 動物学雑誌 (ISSN:00445118)
巻号頁・発行日: vol.66, no.2, 1957-03-15

2020-10-23 05:25:30
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https://ci.nii.ac.jp/naid/110003362149

1 0 0 0 蛙幼生の性転換に於ける脳下垂体の影響

著者: 吉倉真
出版者: 社団法人日本動物学会
雑誌: 動物学雑誌 (ISSN:00445118)
巻号頁・発行日: vol.72, no.1, pp.13-16, 1963-01-15

The present study was undertaken with the object of determining whetehr the hypopysis has some connection with sex reversal in amphibians. Hypophysectomized or thyroidectomized frog larvae (Rana japonica) were treated with estrone (1mg/1) from 105 days of age for 45 days and thereafter maintained without estrone up to 225 days of age. In both groups of animals ovaries were not affected by estrone, but the testes, in most cases, were feminized (Figs. 1, 2). The hypophysis therefore had no connection with gonad feminization. After the treatment was stopped, feminized gonads of thyroidectomized larvae were restored to the testes, all of the ovocytes were destroyed, and the luteal-like bodies were formed (Fig. 3). On the other hand, feminized gonads of hypophysectomized larvae seemed to have evolved into the ovaries (Fig. 4). It seems probable that when the hormonal treatment is stopped, the hypophysis controls the developmental fate of the gonad feminized by the action of estrone.