巻号一覧
23 巻, 12 号
選択された号の論文の12件中1～12を表示しています
- |<
- <
- 1
- >
- >|
-
井上 実, 渡辺 佳一郎1958 年 23 巻 12 号 p. 745-748
発行日: 1958/04/25
公開日: 2008/02/29
ジャーナル フリーThe fishing power of saury blanket net (Bouke-Ami) boats based on the fishing ports in Awa-Gun in Chiba prefecture was studied by means ef using daily catch of each boat reported from 97 boats and the results obtained were as follows.
1) The size of net, the number of attraction lump and another elements of boat as shown in Tables 1-4 have no connection with the fishing power of saury blanket net fishery.
2) Through the fishing season, the average catch of 10-29 tons class in the fishing boats are equal to about 60 percent of that of above 30 tons class as shown in Fig. 2.抄録全体を表示PDF形式でダウンロード (301K) -
フサカサゴ上科Scorpaenicaeに見られる円鱗について小林 久雄1958 年 23 巻 12 号 p. 749-753
発行日: 1958/04/25
公開日: 2008/02/29
ジャーナル フリーCycloid scales found in Scorpaenoid fishes and the phylogenetical significance of their existence are studied in this paper. Scorpaenicae has both scaled and scaleless fishes, and the scale character of the former is, when compared, quite different from that of the fishes of the other superfamilies in Order Cottida, distinctly showing the characteristic as a super-family. There are three groups in scaled Scorpaenicae, which are fishes with cycloid only, fishes with both cycloid and ctenoid, and those with ctenoid only. When they have both ctenoid and cycloid, though, most of their scales on the body are ctenoid, while cycloid remain only in a part of the body, e. g., on the breast or belly. Judging from the fact that cycloid scales remain like this and the existing condition of specialization or degeneration of the structure, the author believes that one side or the evolution of Scorpaenoid fishes can be presumed. And when the existence and structure of these cycloid scales are referred to the suggested generalogical tree by Dr. MATSUBARA, K. (1955), both generally correspond with each other, except that they do not in a part alone where, e. g., Genus Apistus is regarded as a branch of Cocotropus-stem.抄録全体を表示PDF形式でダウンロード (516K) -
木村 正雄1958 年 23 巻 12 号 p. 754-757
発行日: 1958/04/25
公開日: 2008/02/29
ジャーナル フリーPDF形式でダウンロード (222K) -
人工受精に及ぼす潰卵の影響と洗卵法について稲葉 伝三郎, 野村 稔, 富永 健1958 年 23 巻 12 号 p. 758-761
発行日: 1958/04/25
公開日: 2008/02/29
ジャーナル フリーIt is very difficult to extrude the eggs from the ripe female without breaking some of them during the artificial fertilization of the trout cultured. It is known by the culturist that the broken eggs in any amount will seriously interfere with fertilization. To prevent it the following method was devised ; the eggs are extruded on the net receiver and washed by the isotonic salt solution from the shower bath (disolved NaCl 55.05g., KCl 1.97g. and CaCl2•2H2O 3.14g. in 7.5l. water). The eggs are poured into the pan which contained a small quantity of isotonic salt solution and fertilized in the same manner as the usual dry method. We designate it “Egg washing method” for convenience.
The authors studied the interference of the broken eggs in the fertilization of rainbow trout eggs and compared the number of eyed eggs obtained between the dry method and the egg washing method. The results obtained are as follows:
1) When more than 25 broken eggs were contained in 100 cc. coelomic fluid, all the sperm coagulated and did not move.
2) No eyed eggs were obtained when the broken eggs were present at the rate of 3% in the normal stripped eggs. In order to obtain above 80% of eyed eggs, the number of broken eggs should be less than about 0.15% in the normal eggs (Fig. 1 and Table 1).
3) The egg washing method is more useful than the dry method in the fertilization of trout eggs when broken eggs are present among the stripped eggs (Tables 2 and 3).抄録全体を表示PDF形式でダウンロード (336K) -
精液・卵・体腔液などのpH稲葉 伝三郎, 野村 稔, 須山 三千三1958 年 23 巻 12 号 p. 762-765
発行日: 1958/04/25
公開日: 2008/02/29
ジャーナル フリーThe pH values of eggs, milt and coelomic fluid of mature rainbow trout were measured with Beckmann pH meter G type and their results were compared with the percentages of eyed eggs obtained by each brood fish. The results obtained are as follows:
1) The pH value of the testis has a tendency to gradually increase its value from the anterior part toward the posterior (Table 1).
2) The pH value of milt varies from 7.84 to 8.14, and averages 8.03 ± 0.05. The pH value of the transparent fluid which is stripped with milt is 6.25 in average, and this fluid coagulates the sperm and stops its movement. Therefore, care should be taken to prevent mixing this fluid into the normal sperm.
3) The sperm moves within the scope of nearly 4.5 to 10.4 in the pH value and its movement tends to be more active in basic range of pH.
4) The pH value of the egg surface is 8.10-8.59, average 8.27 ± 0.80. The pH value of egg content is 6.53-6.68, average 6.63 ± 0.01 (Table 2). The eggs which showed survival rate below 80% appeared only in the pH range below 8.2 for the egg surface (Fig. 2).
5) The pH value of the coelomic fluid is 7.61-8.14 and its value decreases as the number of broken egg in the coelomic, fluid increases (Fig. 1).抄録全体を表示PDF形式でダウンロード (320K) -
草下 孝也1958 年 23 巻 12 号 p. 766-769
発行日: 1958/04/25
公開日: 2008/02/29
ジャーナル フリーThe author has done those experiments continously for the former report (Refference 1) which was carried out the effect of colour vinyle cord as a model net on drive to fish.
10 goldfish Carassius auratus of an average total length of 3.5cm. were liberated in a wooden tank of 50cm. long, 26cm. wide and 10cm. water depth. A pair of model nets are prepared which wooden frames are stretched netting of small mesh, except the middle part, because inserting three glass tubes in it, seeing Fig. 1. Observing for effect of colours, there were used red, blue and black inks to fill each glass tube, and for depth of colour, these inks were diluted in 10……1, 000 times. The centralizing method was done with repeat of 40 times using all these 11 conditions and in all combinations of two conditions each.
The sum of the total values were given in Table 1. and they were applied the chi-square test of statistics and the visible distance of the glass tubes in the water were given in Table 2.
Even the driving effect is in being of difference by kinds of colours, he recognized superiority and inferiority of the effect according the depth of colour in the same. The visible distance of those glass tubes in the water was coincided with the order of depth of colour, neverthless the colour more visible in the water is not always excellent on the driving effect. As coincide with the result of the former report, the red ink of non-dilution is most excellent on driving effect.
To sum up of those conception, he thinks over that the distinctness with kind and depth of colour is excellent on driving effect.抄録全体を表示PDF形式でダウンロード (288K) -
幽門垂並びにそのグリセリン抽出液中の無機成分について斗ケ沢 宜久1958 年 23 巻 12 号 p. 770-774
発行日: 1958/04/25
公開日: 2008/02/29
ジャーナル フリーIn the present investigation the author made an attempt to make clear the presence of GG-dipeptidase activating inorganic ions such as Co++, Mn++ and Mg++ in the pyloric caeca of several fishes, tunny, bonito, and yellow-tail as well as in their glycerine extractives.
As shown in Tables 2, 3 and 4, whereas Co++ and Mn++ were not detected, the presence of Mg++ was verified, its amount being calculated as 30-50mg % for fresh pyloric caeca. It seems that about 70% of the Mg++ is transferred to the glycerine extractives.抄録全体を表示PDF形式でダウンロード (842K) -
松本 重一郎1958 年 23 巻 12 号 p. 775-781
発行日: 1958/04/25
公開日: 2008/02/29
ジャーナル フリー1) On M-actomyosin preparation of squid muscle purified by reprecipitations, its responses of streaming birefringence (SB) and of viscosity to adenosinetriphosphate (ATP) added were studied togather with superprecipitation.
2) The changes of SB stood in harmony with those of viscosity, suggesting that dissociation and recombination of M-actomyosin occurred successively when ATP was added. Superprecipitation was also confirmatively found with M-actomyosin.
3) In the process of ATP-responses of SB and viscosity, the adenosinetriphosphatase (ATPase) activity of M-actomyosin was found to be inhibited by Mg ion. It was shown that, as far as the effect of alkali earth metals on ATPase activity is concerned, M-actomyosin of squid is not distinct from actomyosin of rabbit and carp.抄録全体を表示PDF形式でダウンロード (445K) -
福田 博業1958 年 23 巻 12 号 p. 782-784
発行日: 1958/04/25
公開日: 2008/02/29
ジャーナル フリーAmounts of blood suger contained in living fresh water fish and amphibia has been estimated.
Blood suger of pond cultured fish or gentle stream fish are at a comparatively low concentration, ranging from 15 to 40mg./dl., while that of the fish, living in the rushing stream, has high contents of blood suger, i. e., from 59 to 129mg./dl. The highest value of blood suger content is found with “yamame” trout, Oncorhynchus milktschitsch, to be 129-131mg./dl., while the lowest value of 19mg./dl. in the normal state is assigned to “unagi”, Anguilla japonica, and “namazu”, Parasilurus asotus.抄録全体を表示PDF形式でダウンロード (164K) -
須山 三千三, 荻野 珍吉1958 年 23 巻 12 号 p. 785-788
発行日: 1958/04/25
公開日: 2008/02/29
ジャーナル フリーTrend of pH value, changes in the amounts of water, total nitrogen, non-protein nitrogen, ether-extractives, crude ash, crude lipides, lipide-phosphorus and-nitrogen in developing rainbow trout eggs were measured, the results being shown in Table 1. The eggs, when transferred from ovarian fluid to water, absorbed abundant water, but decreased in weight on hatching, and then increased gradually after hatching as shown in Fig. 1.
In order that the bearing of these individual components on the egg development may be estimated as justly as possible, they are finally represented in gram per 100 grams of unfertilized eggs ( Table 2). The results obtained are summarized as follows:
1) The amount of water of the unfertilized eggs increased by 17.5g. due to the water uptake following the fertilization. On hatching, the water and solid matter decreased by about 4.4g. and 7.8g., respectively, owing to the detachment of egg capsule. The sac fry when a substantial amount of the yolk had been disappeared, retained the water about two times that of initial eggs.
2) Total nitrogen, ether extractives, and lipides were reduced by half during the course of development, but the non-protein nitrogen increased up to a value about five times as much as that of unfertilized eggs.
3) Ash content increased gradually.
4) On the whole, these increases or decreases became conspicuous with the start of the hatching. The consumption of total nitrogen, ether extractives, and lipides are thought to serve as the energy supply for the motion of embryo.抄録全体を表示PDF形式でダウンロード (332K) -
須山 三千三1958 年 23 巻 12 号 p. 789-792
発行日: 1958/04/25
公開日: 2008/02/29
ジャーナル フリーThe nitrogenous constituents of the fish eggs have been studied by many workers, but we know very little as yet as for the amino acid composition of egg-proteins and its changes during development. The total proteins of the unfertilized eggs and the larva at some developmental stages of rainbow trout, Salmo irideus, have been analyzed in respect of amino acid composition by the chromatografic technique of MOORE and STEIN13) using a Dowex 50 column. In Fig. 1 is shown the elution curves obtained for the hydrolyzate aliquots of unfertilized eggs (No.8) and the fry (No.19); and in Table 1 is shown the results, the composition of amino acid.
1) The amino acid composition of total protein of unfertilized eggs bears some resemblance to that of vitellin4) prepared from the yolk of chick-eggs except as to alanine and serine contents.
2) The unfertilized eggs show some changes in the amino acid composition of the protein during development; the contents of arginine, aspartic acid, glutamic acid, glycine, hydroxyproline, lysine, methionine, and proline tended to increase, while the contents of alanine, isoleucine, leucine, phenylalanine, serine, threonine, valine, and amide-nitrogen tended to decrease.
From the rise and fall of glycine, glutamic acid, amide-nitrogen, etc., some discussion have been made regarding the consumption of total nitrogen and the formation of fish muscle protein during development.抄録全体を表示PDF形式でダウンロード (338K) -
曽々木 淑子1958 年 23 巻 12 号 p. 793-796
発行日: 1958/04/25
公開日: 2008/02/29
ジャーナル フリーIt is known that the preservation period of “Kamaboko” is influenced by the degree of the microbiological contamination of the starch used as a subsidiary raw material.
The present paper embodies a few observations of the chlorination of various commercial starches. Results obtained are as follows:
1. Anyone of the starches thus far examined, if treated with chlorine water of 5 times or 2.5 times the weight of it, became sterilized at chlorine concentrations higher than 300-400 p. p. m. (as available chlorine) in the former case (Table 1), or than 600-800 p. p. m. in the latter, respectively (Table 2).
2. The length of the time required for killing the bacterial spores appears to be little influenced by the environmental temperature (Table 3).抄録全体を表示PDF形式でダウンロード (268K)
- |<
- <
- 1
- >
- >|