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30 巻, 4 号
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外套膜と生産物との関係和田 浩爾1964 年 30 巻 4 号 p. 319-325
発行日: 1964/04/25
公開日: 2008/02/29
ジャーナル フリー1) Relationships among the epithelial cells and their products were investigated in the homoplastic transplantation between the Japanese pearl oyster Pinctada martensii.
2) In mineralization of molluscan shells, groups of the metachromatic granules in various sizes appeared first on the surface of an inserted glass in contact with epithelial cells and subsequently became homogeneous.
3) Fibrous deposits formed on an inserted glass appear to be alike in the elongation and tension of regenerated epithelium.
4) Mounds grown on the fibrous deposits consisted of dendritic spherical crystalline aggregates of shell substances and increased larger in dimension than overlying epithelial cells.
5) Mineral crystals in mounds were in granular, needle-like and rhombic shapes-among individual materials and neighboring areas of a single material.抄録全体を表示PDF形式でダウンロード (2903K) -
テトラサイクリンの使用による貝殼鉱物化に関する実験和田 浩爾1964 年 30 巻 4 号 p. 326-330
発行日: 1964/04/25
公開日: 2008/02/29
ジャーナル フリー1) Experiments of crystal growth on inserted coverslips between shell valve and mantle of Pinctada martensii were carried out with the adminstration of tetracycline hydrochloride.
2) The fluorophore was incorporated into mineral crystals.
3) Localization of the fluorophore appears to be closely related to the mode of growth of mineral crystal and to mineralization of lamellae.
4) Discussion on crystal growth was attempted by the aid of tetracycline adminestered.抄録全体を表示PDF形式でダウンロード (1151K) -
中込 淳, 鈴木 弘毅1964 年 30 巻 4 号 p. 331-334
発行日: 1964/04/25
公開日: 2008/02/29
ジャーナル フリーThe following results were obtained from an investigation on relation of annual variation of catch-rates of big-eyed tuna in the eastern Pacific tropical water area, between south-and-northwise, east-and-westwise and summer season-and-winter season:
1) All the catch-rates shown in division by lat. 10° and long. 5° were high in 1955 and in 1959 through 1961 in the northern part than the equator. In waters southern than the equator, the catch-rates kept leveling in 1958 through 1960 and declined in 1960 through 1962 in sub-area from long. 100°W to 115°W, kept leveling in 1957 through 1961 and declined in 1961 through 1962 in sub-area from long. 115°W to 135°W and declined in 1957 through 1959, increased in 1959 through 1961 and declined again in 1961 through 1962 in sub-area from 135°W to 150°W (Fig. 3).
2) Annual variation of catch-rate of big-eyed tuna in divisions of lat. 0°-5° in each sub-area looks almost same with the annual variation of catch-rate of the fish in divisions of lat. 5°-10° in each sub-area (Fig. 4).
3) Annual variation of catch-rate of big-eyed tuna in summer looks almost same with the annual variation of catch-rate of the fish in winter (Fig. 5).
4) Higher catch-rate of big-eyed tuna in sub-area D happened in 1958 through 1960, that of the fish in sub-area A happened in 1959 through 1961, that of the fish in sub-area B hap-pened in 1960 through 1962 (Fig. 6).抄録全体を表示PDF形式でダウンロード (224K) -
道津 喜衛, 塚原 博1964 年 30 巻 4 号 p. 335-342
発行日: 1964/04/25
公開日: 2008/02/29
ジャーナル フリーMogurnda obscura are the large eleotrid goby, about 15cm in length (Fig. 1: A, B). They are distributed in the western Japan, and are dwelling in rivers, brooks, lakes and swamps, and solitary in life (Fig. 2: A). Especially the river dwellers are found on sandy mud bottom of stagnant waters in middle and lower course of river. They are rather nocturnal and feeding on small fishes and crustaceans, especially small shrimps. They are active in warm seasons, especially in spawning season extending from April to June, and they have a tendency to become hibernant in winter.
The male fish are larger than the female, and they are polygamy. The sex dimorphism evidently appears in the form of genital papilla. No nuptial coloration appears in both sexes. The number of the ripe ovarian eggs, 1.5 to 1.9mm in diameter, were counted 934 to 3, 559 in 5 specimens ranging 95 to 162mm in total length (Table 1). The nest preferences were widely given to many kind of substances, e. g., stone, wood, bamboo, grass root, etc. in various forms. The egg masses were found mainly on underside of the nest shelters, and they were guarded by the male parent until the egg hatched out (Figs. 2, 3). A pair of the ripe fish, reared in an aquarium, spawned an egg mass on the inner wall of the earthernware pipe given as a nest. The egg is ellipsoid in shape, 5mm in long axis and 2mm in short axis. It is demersal adhesive one with a large yolk (Figs. 2, B: 3). The embryo hatched out after it developing to juvenile form (Fig. 4: A, B). The incubation period was about 30 days at 16 to 19°C.
The newly hatched larvae were 7.5mm in total length with separate ventral fins, and after the hatching they entered instantly into a bottom life (Fig. 4). The larvae as well as the ones of the relatives, M. (M.) adspersus and M. mogurnda, and shout, and grew in an aquarium (Fig. 1, C).
It is expected that the spawning is induced smoothly by the setting of artifical nest on the bottom of the habitat, because the nest is wanting under the natural condition. The authors adopted earthernware pipes and pieces of bamboo, about 30cm in length and 7cm in diameter, for the artificial nest, and attained a desired effect.抄録全体を表示PDF形式でダウンロード (2145K) -
酸処理条件の決定について原田 悠三1964 年 30 巻 4 号 p. 343-347
発行日: 1964/04/25
公開日: 2008/02/29
ジャーナル フリーExperiments were carried out to determine the optimum condition of acid treatment in alginic acid production from a brown algae, Eisenia bicyclis, to give the following results.
1. The algae requires to be treated with acid for half an hour or longer, but not to be previously soaked in water.
2. Any influence of anion on the extraction amount of calcium is not found in the mineral acid treatment of the algae.
3. The optimum condition of pre-treatment with acid is thus concluded to be as follows: the swelling algae is treated with 0.1N mineral acid for half an hour at room temperature (15-30°C), while the dried algae with 0.2N acid for one hour at room temperature.抄録全体を表示PDF形式でダウンロード (284K) -
酸処理による藻体の膜電位の変化について原田 悠三1964 年 30 巻 4 号 p. 348-351
発行日: 1964/04/25
公開日: 2008/02/29
ジャーナル フリーMembrane potential of brown algae, Laminaria japonica, as ion-exchange membrane was measured using an apparatus shown in Fig. 1, in order to reexamine the optimal condition of acid pre-treatment in alginic acid production, the condition which was previously reported1). Results obtained were as follows:
1. Though the amount of calcium extracted increases in acid solution, the algae seems to become not so porous during acid treatment, its degree of swelling being less in acid solution than in water.
2. Change of membrane potential of the algae by acid treatment shows the same tendency as the change of the extraction amount of calcium (Fig. 2).
3. The effect of acid treatment of the algae on alginic acid extraction is stronger when the algae is exhaustively washed with water after acid treatment for 1 hr. in dry state, compared to when treated with acid for a short time in swelling state.
4. A 0.2N mineral acid is most suitable for the acid treatment (Fig. 3).
From these results, the following acid pre-treatment is recommened in alginic acid production: The dried algae is treated with 0.2N mineral acid for 1 hr. at room temperanre (10°-30°C), and then completely washed with water to remove the acid.抄録全体を表示PDF形式でダウンロード (261K) -
魚肉アクトミオシンの種特異性について(その2),加熱変性温度と魚種の関係上田 侃男, 志水 寛, 清水 亘1964 年 30 巻 4 号 p. 352-356
発行日: 1964/04/25
公開日: 2008/02/29
ジャーナル フリーThe behavior of heat denatured actomyosin purified from several species of fishes was investigated by means of viscosity measurement and the results were compared among different species. They are summarized as follows;
(1) The decrease in the intrinsic viscosity caused by the heat denaturation considerably differs from species to species. That is, when heated for 30 min. the shotted halibut actomyosin shows the drop in viscosity at 25°C, the Japanese mackerel at 30°C and the sword fish at 35°C.
(2) The denaturing temperature of fish actomyosin may have a relation to the temperature in which the fish lives.抄録全体を表示PDF形式でダウンロード (235K) -
安元 健, 渡辺 武, 橋本 芳郎1964 年 30 巻 4 号 p. 357-364
発行日: 1964/04/25
公開日: 2008/02/29
ジャーナル フリーPDF形式でダウンロード (455K) -
コイにおけるL-アスコルビン酸の生合成池田 静徳, 佐藤 守1964 年 30 巻 4 号 p. 365-369
発行日: 1964/04/25
公開日: 2008/02/29
ジャーナル フリーIn a previous paper2), it was reported that ascorbic acid occurs in all fish tissues, and that its concentration in different tissues of a given fish varies over a wide range. In the present study, ascorbic acid synthesis by carps has been investigated by means of radioactive tracer techniques. The results obtained are as follows:
(1) After injection of D-glucose-1-C14 or D-glucuronolactone-6-C14 into carps, the specific activities of the visceral ascorbic acid were determined. From the data in Table 1, it is evident that carps are able to synthesize ascorbic acid from the such precursors as D-glucose and D-glucuronolactone. Although the administration of Chloretone stimulated the ascorbic acid synthesis in carps from D-glucose, excretion of ascorbic acid was not detected.
(2) The ascorbic acid recovered from the carps administrated with the labeled sugars was degraded to determine the activities of the constituent carbon atoms. The results (Table 3) show that D-glucose-1-C14 was converted to ascorbic acid labeled primarily in carbon 6, while D-glucuronolactone-6-C14 was converted to ascorbic acid labeled predominately in carbon 1. Therefore, it appears that carps possess the same mechanism of ascorbic acid formation as have been found in rats.
(3) Both the ascorbic acid contained in intact fish tissues and the ascorbic acid labeled with C14 were identified to be L-form by paper chromatography (Figs. 1 and 2).抄録全体を表示PDF形式でダウンロード (1096K) -
マッコウ鯨油脂肪酸区分およびヌカ油メチルの飼料効果に関する予備試験金田 尚志, 荒井 君枝1964 年 30 巻 4 号 p. 370-374
発行日: 1964/04/25
公開日: 2008/02/29
ジャーナル フリーIn order to determine the effects of fatty acids fraction of sperm whale oil and free fatty acids of rice bran oil for animal feed, the authors carried out the feeding experiments using rats.
The results obtained were as follows:
1) Free fatty acids separated from sperm whale oil did not show any bad effects against rats. The growth ratio of rats given these fatty acids was approximately 86 per cent of that of rats fed with soy bean oil as control.
2) Ethyl ester of sperm whale oil fatty acids and methyl ester of fatty acids separated from rice bran oil of high acid value showed almost similar effects on rats as compared with free fatty acids of sperm whale oil.
3) Rats given methyl ester and calcium salt of sperm whale oil fatty acids showed rather lower growth than those given the above lipids.
4) Sodium salt of sperm whale oil fatty acids was less nutritive.抄録全体を表示PDF形式でダウンロード (333K)
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