巻号一覧
33 巻, 9 号
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模型魚礁の大きさと魚群反応小川 良徳1967 年 33 巻 9 号 p. 801-811
発行日: 1967/09/25
公開日: 2008/02/29
ジャーナル フリーUsing stone bream, Oplegnathus fasciatus(T. et S.), striped pigfish, Parapristipoma trilineatum(THUNBERG), common sea bass, Luteolabrax japonicus (CUVER), leather fish, Stepthanolepis cirrhifer (T. et S.), gray rock cod, Sebastes inermis (CUVER) and so on, experiments were carried out in an outdoor water tank (L. 8×W. 6×D. 1.5m) with pooled water, in order to obtain the foundamental knowledges about the influences of various dimensions of fish reefs, both horizontally and vertically, to the reaction of fish schools.
1) Stone bream, striped pigfish and common sea bass were attracted samely to the various distances between model fish reefs, both horizontally and vertically. In other words, two seemingly different factors, the one being the increase of height and the other the increase of horizontal area, have the same values of stimulus to the mentioned species of fishes.
2) Seigo, the young of common sea bass, was more attracted to the increase of height than that of area of model fish reefs.
3) Leather fish was more attracted to the increase of horizontal area than that of height of model fish reefs.
4) Stone bream was attracted samely to the blocks, even if the blocks were set in a distance one to one and half the heights of the blocks. While, striped pigfish was obviously less attracted to the blocks, when they were set in a distance more than same to the heights of the blocks.
5) Gray rock cod was hardly attracted to the model fish reefs used in the present report. It was rather attracted to the shadow of the water tank.抄録全体を表示PDF形式でダウンロード (624K) -
年令と成長について増沢 寿1967 年 33 巻 9 号 p. 812-817
発行日: 1967/09/25
公開日: 2008/02/29
ジャーナル フリーWith an aim to know the age and growth of isaki Parapristipoma trilineatum (THUNBERG), a scale analysis has been done on the 157 specimens mostly taken from waters near Miura peninsula, Kanagawa Prefecture during 1964-'66. For this analysis, a shadowgraph was used. Resting zones found on the scale were marked on scale-cards and then the distance of these zones were measured.
The major findings of the present study are summarized as follows. The resting zones in question seemed to be formed twice a year, one in winter (January to February), and the other in summer (June to August). An anti-Lee-phenomenon was observed. For the growth of the fish, the von BERTALANFFY's formulae were estimated as
lt=32.9[1-e-0.31(t+0.496)], wt=579[1-e-0.31(t+0.496)]3.135
However, the curve did not fit to the growth of fish up to six-month-old. Hence a curve was infered for this stage as shown by a dotted line in Fig. 5. The calculated fork length at ages I-IV are given as follows: 12.2, 17.8, 21.8, 24.7cm, respectively.抄録全体を表示PDF形式でダウンロード (1044K) -
銅による斃死狩谷 貞二, 芳賀 克子, 芳賀 秀雄, 津田 勉1967 年 33 巻 9 号 p. 818-824
発行日: 1967/09/25
公開日: 2008/02/29
ジャーナル フリーIn this research, it was tried to determine the quantity of copper in the fish body. The quantity of copper was determined by the Sodium-Diethyl-Dithiocarbamate method. A normal fish contented copper that was less than 2.2γ/g per body weight and was 1.35γ/g on an average. (Table 1) The excessive copper content was regarded as follows:-
Excessive copper content Determined copper content -2.2(γ/g)
After a fish was died in various concentrations of CuSO4 within 48 hours, copper content in its fish body was determined at once or after washing in running tap water for 24 hours. According to these experiment, it was possible to detect the excessive copper content in every case. (Table 3)
Post-mortem identification of copper in the bodies of fishes killed by acidic-copper-plating and alkaline-copper-plating solutions was possible too. In case of a brass-plating solution, however, it was possible in higher concentrations, but often impossible in lower concentrations. But even in case of the low concentrations, CN was detected from the fish body killed in it. (Table 6, 7, 8)抄録全体を表示PDF形式でダウンロード (379K) -
北海道南方海域の炭水化物の分布について川原 鳳策, 米田 義昭, 石井 次郎1967 年 33 巻 9 号 p. 825-833
発行日: 1967/09/25
公開日: 2008/02/29
ジャーナル フリーSea water samples were collected from off coast of Southern Hokkaido by surveying vessels “Kofu-maru” and “Ryofu-maru” which belong to the Japan Meteorological Agency.
Horizontal and vertical distributions of carbohydrate and dissolved oxygen were examined for the samples which were collected from thirteen observational stations at varying depths.
It was found that Tsugaru warm-current and Oyashio cold-current formed a boundary of watermass in offshore of Cape Erimo, 41°30'N, 143°40'E. In the east side of this watermass, higher content of carbohydrate and supersaturation of dissolved oxygen were detected and a large number of phytoplankton was found.
In surface and subsurface sea water of this area, about 0.0-1.3mg/l of total carbohy-drate (expressed as sucrose equivalent) and 0.0-0.7mg/1 of dissolved carbohydrate were found and supersaturation of dissolved oxygen raised up about 1-2ml/l. Maximum concen-tration of carbohydrate was found at 10-75m depth. Correlation coefficient between carbo-hydrate and supersaturated value of dissolved oxygen showed 0.39.抄録全体を表示PDF形式でダウンロード (597K) -
高木 光造, 大石 圭一, 奥村 彩子1967 年 33 巻 9 号 p. 834-838
発行日: 1967/09/25
公開日: 2008/02/29
ジャーナル フリーUsing an amino acid analyzer (Hitachi, Type KLA-III, Amberlite CG 120), the seasonal variation, from April 6 to June 15, of the free amino acid composition of Chondrus ocellatus has been studied. The results obtained are shown in Table 2.
Amino acid composition of Chondrus ocellatus consists of considerable quantities of S-hydroxymethyl-L-homocysteine, glutamic acid, citrulline and taurine, some quantities of al-anine, arginine, aspartic acid, chondrine, cysteic adid, D-cysteinolic acid, glycine, isoleucine, leucine, lysine, phenylalanine, serine, threonine and valine, and small quantities of alloisole-ucine, histidine, methionine, ornithine, and tyrosine. In the samples collected in June, pro-line is determined. Any amount of tryptophan is not detected throughout the period.
Interesting results on seasonal variation of nitrogen contents of amino acids have been found. The ratio of nitrogen of each amino acid to the sum of nitrogens of amino acids and ammonia was changed seasonally and abruptly (Table 3), i. e. 32-44% was obtained in the periods from April to, the beginning of June and 19% in the middle of June on citrulline; 14-16% in April and May and 10% in the middle of June on glutamic acid; 18% in the beginning of April and 0.2% in the middle of June on S-hydroxymethyl-L-homocysteine, 12-13% in April and the beginning of May and 27% in the middle of June on taurine. The values of cysteic acid and D-cysteinolic acid in June were higher than those in April.抄録全体を表示PDF形式でダウンロード (295K) -
緑色色素生成におけるシスティンの関与小泉 千秋, 松浦 文雄1967 年 33 巻 9 号 p. 839-842
発行日: 1967/09/25
公開日: 2008/02/29
ジャーナル フリーTo find out an additional factor participating in greening of Mb with TMAO, effects of egg albumin, cysteine and some other reducing substances were examined. The mixed solution was heated under anaerobic condition and color of the precipitate and filtrate was observed on the green tinge. The results obtained are as follows:
1. Egg albumin caused greening to some extent and cysteine the most intense greening. Glutathione, thioglycolic acid and hydrogen sulfide also induced a slight greening but were not so effective as cysteine. Ascorbic acid and sodium hydrosulfite were ineffective.
2. The natural “green” tuna could be represented by a model system consisting of Mb, TMAO and cysteine.抄録全体を表示PDF形式でダウンロード (269K) -
渡辺 武, 土屋 孝夫, 橋本 芳郎1967 年 33 巻 9 号 p. 843-847
発行日: 1967/09/25
公開日: 2008/02/29
ジャーナル フリーIt was previously observed that the synthetic antioxidants, methylene blue, BHA and ethyl gallate, are all ineffective on muscular dystrophy of carp induced by oxidized saury oil and that methylene blue promotes the disease.
Succeeding to the previous work, the effect of DPPD and ethoxyquin was compared with that of DL-α-tocopheryl acetate on the muscular dystrophy of carp and that of methylene blue was reexamined.
As shown in Table 3, the both antioxidants, DPPD and ethoxyquin did not counteract the action of oxidized saury oil and the former killed carp in 30-40 days at the level of 250mg%. When kept on a diet containing 120mg% of methylene blue, carp showed a typical sign of the disorder in 7 days and the rate of diseased fish exceeded 90 percent in 20 days. A high blood glucose level was observed in the lots, in which fish showed a high percentage of muscular dystrophy.抄録全体を表示PDF形式でダウンロード (329K) -
ハマチの消化管に存在するキチン分解酵素について奥谷 康一, 川田 泉, 木俣 正夫1967 年 33 巻 9 号 p. 848-852
発行日: 1967/09/25
公開日: 2008/02/29
ジャーナル フリーIn the previous paper1) it was reported by the present authors that the chitinolytic enzyme is present in some organs of a few kinds of aquatic animals.
Recently, it has been reported that in the digestive tracts of Japanese sea-bass, Latsolabrax japonicus, chitin seems to be decomposed simultaneously by both bacterial and non-bacterial actions.2)
The present study was carried out in order to ascertain whether similar chitinolytic systems are present in yellow tail, Seriola quinqueradiata. This paper is concerned with both chitinolytic enzyme of non-bacterial origin in the stomach and chitin-decomposing bacteria present in the digestive tracts.
Results obtained were as follows:
1) The chitinolytic enzyme of high activity is present in the stomach but not in the pyloric caeca and intestine at all (Table 1).
2) The optimum pH value for the action of the enzyme is about 4.0 (Fig. 2), and the optimum temperature is about 50°C (Fig. 3).
3) The enzyme is stable at pH 3.0-4.0 at 22°C at least for 24 hours (Fig. 4).
4) Most or many of the bacterial cells present in the digestive tracts are occupied by chitin-decomposing ones (Table 2).
5) The optimum pH values for the action of the enzyme of bacterial origin is about 7.0 (Fig. 5), and the optimum temperature is about 40°C (Fig. 6), both being in sharp contrast to those of the enzyme of non-bacterial origin.抄録全体を表示PDF形式でダウンロード (310K) -
橋本 周久1967 年 33 巻 9 号 p. 854-858
発行日: 1967/09/25
公開日: 2008/02/29
ジャーナル フリーPDF形式でダウンロード (405K) -
野村 正1967 年 33 巻 9 号 p. 860-865
発行日: 1967/09/25
公開日: 2008/02/29
ジャーナル フリーPDF形式でダウンロード (486K) -
平尾 秀一1967 年 33 巻 9 号 p. 866-870
発行日: 1967/09/25
公開日: 2008/02/29
ジャーナル フリーPDF形式でダウンロード (401K) -
日比谷 京1967 年 33 巻 9 号 p. 872-876
発行日: 1967/09/25
公開日: 2008/02/29
ジャーナル フリーPDF形式でダウンロード (426K) -
尾藤 方通1967 年 33 巻 9 号 p. 878-882
発行日: 1967/09/25
公開日: 2008/02/29
ジャーナル フリーPDF形式でダウンロード (447K) -
小泉 千秋1967 年 33 巻 9 号 p. 883-887
発行日: 1967/09/25
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) -
秦 満夫1967 年 33 巻 9 号 p. 889-893
発行日: 1967/09/25
公開日: 2008/02/29
ジャーナル フリーPDF形式でダウンロード (374K) -
豊水 正道1967 年 33 巻 9 号 p. 894-898
発行日: 1967/09/25
公開日: 2008/02/29
ジャーナル フリーPDF形式でダウンロード (390K) -
新村 大三郎1967 年 33 巻 9 号 p. 900-903
発行日: 1967/09/25
公開日: 2008/02/29
ジャーナル フリーPDF形式でダウンロード (261K) -
1967 年 33 巻 9 号 p. e3
発行日: 1967年
公開日: 2008/04/22
ジャーナル フリーPDF形式でダウンロード (47K)
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