巻号一覧
38 巻, 4 号
選択された号の論文の13件中1～13を表示しています
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ニジマスの伝染性膵臓壊死症:わが国における地理的および季節的分布佐野 徳夫1972 年 38 巻 4 号 p. 313-316
発行日: 1972/04/25
公開日: 2008/02/29
ジャーナル フリーRainbow trout fry from 27 hatcheries and culture farms located in the prefectures of Shizuoka, Nagano, Yamanashi, Tokushima, Shimane, and Tokyo were examined viroloigcally for virus infestaions. The virus, isolated from 24 of the samples and titers, ranged from 105.8 to 108.2 TCID50 per ml. In the three additional prefectures, Tokushima, Shimane, and Tokyo, the virus was isolated for the first time.
Virus was isolated in both spring and summer fry and from these facts it can be concluded that the virus is widespread in Japan and epizootics occur regardless of season.抄録全体を表示PDF形式でダウンロード (193K) -
イワガニの精巣にみられる季節的変化千葉 晃, 本間 義治1972 年 38 巻 4 号 p. 317-322
発行日: 1972/04/25
公開日: 2008/02/29
ジャーナル フリーSeasonal changes in the testis of the lined shore crab, Pachygrapsus crassipes, were examined histologically. The materials were obtained along the beach of Niigata City facing the Japan Sea, and the period of collection extended from April to November, 1969. The process of spermatogenesis was classified roughly into six stages. These are: primary and secondary spermatogonia, primary and secondary spermatocytes, spermatids and spermatozoa. The sperm is aflagellate, consisting of a spherical acrosome that is surrounded by a cup shaped nucleus with radiating processes. The acrosome is derived from the PAS-positive granules found in the cytoplasm of the spermatid during spermiogenesis. Further, the acrosome is provided with a proximal tubule and a structure of distal coronet. In April, the seminiferous tubule contains many residual sperms and a cluster of spermatogenetic cells in their earlier stages, such as secondary spermatogonia and primary spermatocytes. Some of the residual sperms are included in the cytoplasm of the nursing cells that form a simple layer of the columnar epithelium. The testes taken from the materials of May to June are filled with a lot of spermatocytes and spermatids. The highest peak of the testicular activity reaches in late July. Spent testes are found in some individuals obtained in late August, but spermatogenesis still continued to exist in a number of specimens obtained in late September to November, because the recovery phase takes place gradually.抄録全体を表示PDF形式でダウンロード (2492K) -
イワガニの卵巣にみられる季節的変化千葉 晃, 本間 義治1972 年 38 巻 4 号 p. 323-329
発行日: 1972/04/25
公開日: 2008/02/29
ジャーナル フリーThe present paper deals with the seasonal changes in the ovary of the lined shore crab, Pachygrapsus crassipes, known as a common crab which is widely distributed in the rocky beaches of the Japanese Islands. The animals used in the present study were collected along the coast of Niigata City facing the Japan Sea, and the period of collection extended from April to November, 1969. By means of histological examinations and gono-somatic index, the seasonal changes found in the ovary were classified into six stages. These are: growth stage (April), vitellogenetic stage (May to early July), premature and mature stages (middle to late July), spawning stage (late July), and recovery stage (August to November). A small number of sudanophilic bodies were detected in the ooplasm of the young oocyte and after that, the yolk globules began to be deposited in the entire ooplasm with accompanied growth of the ovum. In the spent individual, the ovary was characterized by a considerable number of the ovulation scars, residual ova and developing ovarian stroma, intermingled with each other. Subsequently, the ovary reached the recovery stage as revealed by the absorption of the residual yolk by the stromatous tissue and several kinds of leucocytes. As some of the spent females with developing embryos in their abdominal flap have another set of mature ovary, it is assumed that these crabs can spawn twice during a single breeding season.抄録全体を表示PDF形式でダウンロード (2570K) -
カロチノイドの代謝秦 正弘, 秦 満夫1972 年 38 巻 4 号 p. 331-338
発行日: 1972/04/25
公開日: 2008/02/29
ジャーナル フリー1) Zeaxanthin and β-carotene were metabolized to astaxanthin. Zeaxanthin was metabolized easily, but β-carotene was metabolized very slightly. Echinenone and canthaxanthin were not metabolized distinctly to astaxanthin. Lutein was metabolized to 4-ketolutein but not to astaxanthin.
2) The rates of accumulation and absorption of carotenoids differed. OH groups and α-structure increased the absorption but carbonyl group decreased it.
3) The hepatopancreas did not accumulate all given carotenoids.抄録全体を表示PDF形式でダウンロード (477K) -
ゼアキサンチンからアスタキサンチンへの転換秦 正弘, 秦 満夫1972 年 38 巻 4 号 p. 339-343
発行日: 1972/04/25
公開日: 2008/02/29
ジャーナル フリー1) Zeaxanthin was metabolized to astaxanthin through 4-keto-zeaxanthin. It was assumed that zeaxanthin would be metabolized to astaxanthin in ester form in the integument.
2) The accumulation in the integument reached a maximum level after 48 hrs and the equilibrium state after 7-8 days.抄録全体を表示PDF形式でダウンロード (202K) -
Valyl polypeptide chain天野 秀臣, 橋本 周久, 松浦 文雄1972 年 38 巻 4 号 p. 345-350
発行日: 1972/04/25
公開日: 2008/02/29
ジャーナル フリーN-Terminal amino acid sequences of the valyl polypeptide chains of the four hemoglobin components (F1, F2, S1, and S2) of eel, Anguilla japonica, were analyzed by the PTC-DNP method and the leucine aminopeptidase method. Results obtained are summarized as follows: (1) The N-terminal sequence of the valyl polypeptide chain was Val-Glu-Thr-Asn-… for components S1 and S2. As far as the present results are concerned, therefore, there are no differences between components F1 and F2 nor between S1 and S2. In the four components, Val was the only common residue. (2) It seemed impossible to judge, based on the present results, which chain of the α and β chains of higher vertebrate Hb is comparable to the valyl chain of each Hb component of eel.抄録全体を表示PDF形式でダウンロード (370K) -
Acetylated polypeptide chain天野 秀臣, 橋本 周久, 松浦 文雄1972 年 38 巻 4 号 p. 351-357
発行日: 1972/04/25
公開日: 2008/02/29
ジャーナル フリーAcetylated polypeptide chains of the four hemoglobin (Hb) components (F1, F2, S1, and S2) of eel, Anguilla japonica, were analyzed for N-terminal amino acid sequence by use of the method involving “Pronase” and carboxypeptidase digestions. Results obtained are summarized as follows: (1) The N-terminal structure of the acetylated polypeptide chain was Acetyl-Ser-Leu-Ser-Ala-… for component F1, and Acetyl-Ser-Glu-Ser-Asp-… for the other three components. (2) Principally based on a close resemblance in the N-terminal sequences of those acetylated chains of eel Hb's to the α chain of carp Hb, it could be concluded that the acetylated chains of the four Hb components correspond to the α chains of Hb's from human or other vertebrates, and hence the valyl chains of eel Hb's reported previously, to the non-α chains, or to the β chains as called customarily.抄録全体を表示PDF形式でダウンロード (369K) -
I-1. 漁業の発展過程苫米地 洋文1972 年 38 巻 4 号 p. 360-361
発行日: 1972/04/25
公開日: 2008/02/29
ジャーナル フリーPDF形式でダウンロード (111K) -
前田 辰昭1972 年 38 巻 4 号 p. 362-371
発行日: 1972/04/25
公開日: 2008/02/29
ジャーナル フリーPDF形式でダウンロード (703K) -
肥後 伸夫1972 年 38 巻 4 号 p. 372-378
発行日: 1972/04/25
公開日: 2008/02/29
ジャーナル フリーPDF形式でダウンロード (487K) -
II-1. 北海道周辺(集団分布構造と評価)辻 敏1972 年 38 巻 4 号 p. 383-388
発行日: 1972/04/25
公開日: 2008/02/29
ジャーナル フリーPDF形式でダウンロード (414K) -
高橋 善弥, 山口 〓常1972 年 38 巻 4 号 p. 389-399
発行日: 1972/04/25
公開日: 2008/02/29
ジャーナル フリーPDF形式でダウンロード (524K) -
北野 裕, 吉田 久春, 金丸 信一1972 年 38 巻 4 号 p. 400-408
発行日: 1972/04/25
公開日: 2008/02/29
ジャーナル フリーPDF形式でダウンロード (549K)
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