1 0 0 0 OA キムラグモ(Heptathela kimurai)の発生
1 0 0 0 OA 比較発生学からみたクモ類の系統
1 0 0 0 OA 蛙の性転換に於ける脳下垂体のはたらき(発生・実験形態)
1 0 0 0 OA 蛙幼生の性転換に於ける脳下垂体の影響
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.
1 0 0 0 OA ヌマガエルの性(遺伝学・発生学・実験形態学)
1 0 0 0 ウシサワラ及カマスサワラ
1 0 0 0 ワモンゴキブリの触覚上感覚毛の微細構造(生理学)
1 0 0 0 OA クロジヨウビタキに就て
1. Donax semignosus DUNKER (Fig. 1), a mussel living at the sandy beach of the sea, manifests a characteristic tidal rhythmic migration. The observation of this rhythmic migration and the experimental analysis of the behaviour at the flood tide were performed at the coast of Okinosu in Tokusima-Si (Fig. 2), during late August and early September in 1937. 2. This animal lives beneath the sand of the beach washed by the waves (Fig. 11 and 12), and at the flood tide it makes shoreward migration inn accord with the rising of the surface of the sea, and at the ebb tide offshore retreat with the lowering of the sea level. The animal thus shows up-and-down movements synchronus with those of the tides. The distance of the migration was 3-6m at the neap tide, but at the spring tide it was often over 30m (Table 1, Figs. 3 and 4). 3. The method of the migration is characteristic. At the flood tide, the mussels lurked beneath the sand suddenly jump out to the surface of the sand just in front of the top of the surf (this motion requires 0.5-1.5 sec.) to be carried shoreward by it and then quickly insure the supporting point by inserting the foot into the sand so as not to be carried back again by the retreating current, nad in the next moment they disappear beneath the sand with quickly repeating motions of the foot (this movement requires 3-6 sec.). By repeating these movements the animals can perform the migration towards the higher parts of the beach (Figs. 5 and 6). On the contrary, at the ebb tide, they suddenly jump out to the surface when the lapped wave just begins to retreat to find themselves in the next moment at the lower parts of the shore, and then burrowing into the sand, disappear from the surface. By repeating these movements the mussels can accomplish the migration towards the lower parts of the shore (Fig. 6). 4. By several experiments and observations, it was proved that the jumping-out behaviout in front of the top of the surf at the flood tide was due to the shock or the vibration of the sand given by the wave when it beats the shore (Figs. 7-10). 5. This migrating behaviour seems to be concerned with food habit of the mussel. It feeds on minute living organisms at the beach and it is convenient for the animal to remain throughout the day at the beach where sand grains and consequently many minute organisms attached to them are always stirred by lapping waves. 6. The wedge-shaped triangular shell and the arrow-headed foot are all well adapted to execute the migration which needs the quick motion of the animal (Fig. 13). Accessory notes: 7. A king of the crab, Remipes truncatifrons MIERS (Fig. 14), which lives abundantly at the same beach mentioned above, shows up-and-down movements synchronous with those of the tides. The quick motion of this animal remembers that of the said mussel.
1 0 0 0 イモリの呼吸反射と感覚刺激(生理)
1 0 0 0 OA ミミズハゼにつく粘液胞子虫について(分類学・形態学・原生動物学)
1 0 0 0 ハタネズミの飼育実験(生態学)
- 著者
- 白石 哲
- 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.84, no.4, 1975-12-25
1 0 0 0 ネズミ類の生活
- 著者
- 白石 哲
- 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, pp.414-415, 1970-12-15
1 0 0 0 日本に栖息する蝙蝠の話第五(第二十一版)
- 著者
- 波江 元吉
- 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.1, no.7, pp.212-213, 1889-05-15
- 被引用文献数
- 2
1 0 0 0 對島採集日記(承前)
- 著者
- 波江 元吉 土田 兎四造
- 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.5, no.51, pp.20-24, 1893-01-15