巻号一覧
36 巻, 6 号
選択された号の論文の16件中1～16を表示しています
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風浪と作業時間の関係前田 弘, 南 四郎1970 年 36 巻 6 号 p. 549-555
発行日: 1970/06/25
公開日: 2008/02/29
ジャーナル フリーAmong many of the oceanographic and meteorological factors, the wind wave was chosen; and the difference of its influence on the working time of the Danish seiners according to the steps of works, was examined. The results obtained are summarized as follows:
1. The hauling-brail.ing step was the least resistive against the wind wave. And the maximum difference of the average times among the grades reached as large as 20% of the time expended on this step, because the net in surface layer was handled at the working pace of the fishermen.
2. The laying step succeeded to this, the retardation being 7%, because this step of work progressed at the working pace of the boat.
3. The sinking-pulling step was the most resistive and received scarcely any influence (45 seconds or 3%).
4. The fishable limit of wind wave was the grade 7; and the influence of wind wave was far larger than that impressed from the retardation of the work and the elongation of the intervals, because much hours were expended to wait the recovery of the sea condition on the days of the grade 7 but they were not counted in the intervals.抄録全体を表示PDF形式でダウンロード (421K) -
高 冠瑞, 鈴木 誠, 近藤 仁1970 年 36 巻 6 号 p. 556-562
発行日: 1970/06/25
公開日: 2008/02/29
ジャーナル フリーUsing the shrimps (Penaeus Japonicus BATE) obtained from the off shore by trammel nets, some experiments were carried out to know the behaviour of shrimp to moving plane net that was towed in various speed in water tank.
1. The reactions of shrimp to moving net in sea water tank can be classified into four major types.
a) Jumping backward type
b) Swimming forward type
c) Sticking on the net type
d) Crawling type
2. The relationship between the towing speed and the behaviour patterns of (a) and (b) type decrease according to the increase in the towing speed. But stick on the net type (c) increases proportionately to the towing speed. Crawling type (d) reveals only under the speed of 0.5m/sec.
3. Angling nets showed different herding ability by its angle and effectiveness of herding ability is superior in the order 30°>45°>60° respectively as shown in Fig. 2.
4. Maximum escaping speed was about 1.7m/sec and sustained distance with maximum speed was presumed as about 17m.
5. Desirable towing speed of the common shrimp trawl is thought to will be about 0.5m/sec according to the function of wing nets as shown in Fig. 1.
6. The position at which the shrimps were caught by trammel nets were within one meter from the sea bottom as shown in Fig. 4 and this data will give one hint to design the common shrimp trawl.抄録全体を表示PDF形式でダウンロード (425K) -
秋山 章男1970 年 36 巻 6 号 p. 563-570
発行日: 1970/06/25
公開日: 2008/02/29
ジャーナル フリー1. The differential susceptibility of eggs, developing embryos, fry and adult of a cypridont fish, Oryzias latipes, have been studied on the base of the 24 hour Median Tolerance Limit to the organic mercury compounds, phenylmercuric acetate and metoxyethylmercuric chloride.
2. The aliphatic organic mercury, metoxyethylmercuric chloride was less toxic than the aromatic organic mercury, phenylmercuric acetate. To metoxyethylmercuric chloride, 24 hour TLm for eggs, fry and adult was 0.50-1.30 ppm, 1.48 ppm and 1.74 ppm respectively, while to phenylmercuric acetate, 0.18-0.26 ppm, 0.03 ppm and 0.21 ppm respectively.
3. To all toxicants applied adult fish were more tolerant than fry, but eggs in the solution of PMA were most resistant.
4. In developing embryos, 24 hour TLm to the organic mercury compounds gradually increased through the early stage, passed through a maximum in the median phase, at 5-day-old, and finally fell off in the later phase, in a general minimum.
5. With the process of growth of fish, 24 hour TLm increased logarithmically. A straight line is well fitted when log TLm (Y in ppm) is plotted against age (X in days) of the fish. The regression equation was,
log Y=0.0050X-1.4018
and significant in the level of P=0.01 and regression coefficient ranged from 0.0016 to 0.0084.抄録全体を表示PDF形式でダウンロード (466K) -
板沢 靖男1970 年 36 巻 6 号 p. 571-577
発行日: 1970/06/25
公開日: 2008/02/29
ジャーナル フリーArterial and venous level of oxygen content were determined with normal fish of three freshwater species, rainbow trout, carp, eel, and a marine one, a sea bream.
1. Oxygen content of arterial blood in the teleosts (6.7-10.7 vol.%) is much smaller than that in mammals (17.2 or 19.6 vol.%).
2. Oxygen content of venous blood in the teleosts (1.1-2.7 vol.%) is also much smaller than that in mammals (12.9 or 13.0 vol.%).
3. Fishes are considered to utilize the oxygen, transported to the tissues by the arterial blood, very efficiently. The percent utilization of oxygen by the tissues reached to high levels (60-88%) in contrast with low ones (24 or 34%) in mammals. From a different viewpoint, fishes are considered to utilize the oxygen to the utmost limit, and leave little spare.
4. The gills of fishes are highly efficient as an oxygenator. Recovery ratio of the oxygen content of blood by the respiratory organ reached to high values (2.5-8.2) in the teleosts compared with low ones (1.3 or 1.5) in mammals.抄録全体を表示PDF形式でダウンロード (370K) -
試作たて繩によるビンナガの釣獲について斎藤 昭二, 石井 清彦, 米田 国三郎1970 年 36 巻 6 号 p. 578-584
発行日: 1970/06/25
公開日: 2008/02/29
ジャーナル フリーIt has been presumed that the swimming level of albacore is generally deeper than that of other species. A study was undertaken to determine the swimming depths of the albacore by fishing by means of a newly designed vertical longline.
The results are summarized as follows;
1) To equip with vinyl chloride triangular plates at the joints of branch lines were effective to prevent hook entanglements (Fig. 1).
2) Lesser influence of sea currents was seen upon the angle of inclination of the vertical longline. It was possible to sink the longline to 97% of the expected depth.
3) It was apparent that the opportunity of hooking albacore commenced with the settling period of the longline, as observed from an automatic depth-meter.
4) The rate of hooking was 4.7-5.4% at 200-300m depths, and 3.4% even at 380m depth. This fact suggests that the albacore swims in the deeper layers of the water.抄録全体を表示PDF形式でダウンロード (574K) -
スルメイカ血液のディスク電気泳動元広 輝重, 猪上 徳雄1970 年 36 巻 6 号 p. 585-587
発行日: 1970/06/25
公開日: 2008/02/29
ジャーナル フリーDisc electrophoresis was carried out on individual samples of squid, Todarodes pacificus, blood. Four protein components of which threw were haemocyanins, were detected. There was no significant difference in the electrophoretic patterns due to locality of catch, size or sex of the squid.抄録全体を表示PDF形式でダウンロード (314K) -
ブルー・ミートの化学成分および組織観察猪上 徳雄, 元広 輝重1970 年 36 巻 6 号 p. 588-591
発行日: 1970/06/25
公開日: 2008/02/29
ジャーナル フリーCopper contents in blue and normal meats of king crabs were 2.80 and 0.49mg% (wet weight) in average, respectively. Higher copper contents were found in the shoulder meat, surface of first leg, and meats nearer a joint and claw meat than those in other parts. The limit of copper above which blueing occurs appears to be about 2mg%. The result of histological study suggested that blood haemocyanin might be a causative material for blueing.抄録全体を表示PDF形式でダウンロード (414K) -
ケラト硫酸分解細菌の単離北御門 学, 上野 隆二, 中村 孝1970 年 36 巻 6 号 p. 592-596
発行日: 1970/06/25
公開日: 2008/02/29
ジャーナル フリーA bacterium capable of consuming keratosulfate was found in human and dog stools. The bacterium isolated from human stool showed the keratosulfate-degrading activity so far as it grew in the liquid medium containing keratosulfate. Furthermore, the enzymatic degradation of keratosulfate derived from bovine cornea and whale nasal cartilage was demonstrated with the cell extract and cultured medium of the bacterium.抄録全体を表示PDF形式でダウンロード (328K) -
キハダマグロジェリーミートのたんぱく質の分画小長谷 史郎, 尾藤 方通, 天野 慶之1970 年 36 巻 6 号 p. 597-605
発行日: 1970/06/25
公開日: 2008/02/29
ジャーナル フリーPDF形式でダウンロード (1482K) -
戸沢 晴巳, 榎原 和子, 天野 慶之1970 年 36 巻 6 号 p. 606-611
発行日: 1970/06/25
公開日: 2008/02/29
ジャーナル フリーIt has been known that the picrate colour reaction is not specific for trimethylamine (TMA) because the reaction occurs also with many types of amines formed during the spoilage of fish. Thus, the TMA level in the muscle of gadoid fishes are considered to be overestimated by the DYER's picrate method, since the muscle often contains a considerable amount of dimethylamine (DMA) even in a good grade of quality.
By chance the authors observed that the picrate value of cod muscle, obtained by HASHIMOTO's method using KOH instead of K2C03, was too low for the expected level from the amount of DMA contained, and therefore, examined the colour development of DMA picrate in relation to the reagents employed in the picrate method.
Optical density of DMA picrate was much smaller with the combined use of KOH and 1ml of 10% formaldehyde (FA), than the O. D. obtained with K2C03 and FA. The ratio of the O. D. of DMA picrate to the O. D. of the equivalent TMA picrate (ratio of colour development) was approximately 4% for the KOH method, while the ratio was about 50% in the case of using K2CO3 as the reagent.
The amount of FA showed markedly different effects in the two methods: with K2C03 the colour intensified in proportion to the increase of FA, while with KOH, a maximum value occurred in the absence of FA and abruptly dropped with the addition of 0.5 to 1.0ml of FA, followed by a gradual intensification in colours as FA increased.
The use of KOH as well as K2C03 was examined to determine their effect on the picrate values of fish samples. Cod and Alaska pollock fillets, including irradiated or salted, were analyzed after chilled or frozen storage. The picrate values with the use of KOH were found close to the “real” TMA values measured by gas-liquid chromatography (GLC), except one sample which contained a larger amount of DMA. However, the picrate values obtained with K2CO3 were much higher than the GLC values.
With regard to the results mentioned above, the authors propose that KOH be used instead of K2C03 as the alkali reagent, and the amount of 10% FA added be kept to 1ml, when gadoid fishes are subjected to TMA analysis by the picrate method.抄録全体を表示PDF形式でダウンロード (427K) -
魚肉アクトミオシンATP-aseのレシチンによる活性化田口 武1970 年 36 巻 6 号 p. 612-616
発行日: 1970/06/25
公開日: 2008/02/29
ジャーナル フリーTo clarify the mechanism of activation by lecithin of the actomyosin ATPase from fish muscle, the effect of lecithin on the interaction of actomyosin with ATP was examined.
1) The marked structural change of actomyosin induced by the addition of lecithin was observed in the presence of ATP, as judged by a more drop in the relative intensity of light scattering at 90°.
2) By the treatment of actomyosin with phospholipase C, the substrate concentration curve-the ATPase activity showed the sigmoidal shape.
3) The enhancing effect of lecithin on the actomyosin ATPase activity was lost as a result of storage of the preparation and treatment with NTP, without loss of the original enzyme activity. On the other hand, although pCMB inhibited the ATPase activity, the ATPase was susceptible to lecithin. From these results, it was assumed that the sensible site to lecithin on the actomyosin preparation presumably is different from that to ATP.抄録全体を表示PDF形式でダウンロード (281K) -
ウニの冷凍貯蔵中に生成されるえご味成分の分離三輸 勝利1970 年 36 巻 6 号 p. 617-622
発行日: 1970/06/25
公開日: 2008/02/29
ジャーナル フリーThe strong pungent taste increases in sea urchin gonads during freezing storage for several months, and such off-flavor reduces its quality as food.
Pungent components in sea urchin, Strongylocentrotus intermedius, gonad, which was frozen at -13±5°C for 6 months, were isolated and identified.
1) Three pungent fractions, volatile neutral carbonyls, nonvolatile neutral carbonyls and keto carboxylic acids, were obtained from the frozen gonad.
2) Acetaldehyde, crotonaldehyde and n-valeraldehyde (or iso-valeraldehyde) were contained in the volatile neutral carbonyl fraction, aldol and crotonaldehyde in the nonvolatile carbonyl fraction, and pyruvic acid, α-keto butyric acid and α-keto iso-caproic acid in the keto carboxylic acid fraction.抄録全体を表示PDF形式でダウンロード (368K) -
渡辺 武, 荻野 珍吉, 隆島 史夫, 日比谷 京1970 年 36 巻 6 号 p. 623-630
発行日: 1970/06/25
公開日: 2008/02/29
ジャーナル フリーPDF形式でダウンロード (716K) -
中村 孝, 豊水 正道1970 年 36 巻 6 号 p. 631-637
発行日: 1970/06/25
公開日: 2008/02/29
ジャーナル フリーThe fatty acid amide compounds in organisms are known to occur in several forms, ceramide and shingolipid, N-acyl amino acid, peptidolipid, N-acyl ethanolamine, and the like.
While investigating the composition of visceral lipid of fin whale Balaenoptera physalus, the authors detected another fatty acid amide compound, fatty acid amide (RCONH2), which had not been found to occur in organisms. The present report is concerned with the separation, identification and distribution of RCONH2 in fishes.
The fatty acid amide fractions were prepared from red sea bream Chrysophyrys major and carp Cyprinus carpio by the method shown in Fig. 1. Although the main component of the fractions was ceramide; the minor component RCONH2 could be separated and identified by gas chromatography (Fig. 4), and then the composition of RCONH2 was compared with that of fatty acid of crude lipid (Table 2).
RCONH2 in red sea bream: The amounts of RCONH2 found in the viscera were 82 μg% on the wet weight basis and in muscle 7μg%. Both tissues contained C14:0, C16:0, C17:0, C18 0 and C18 1 of RCONH2. In viscera, 53.2% of the total RCONH2 were C16 0, but in muscle, C16:0, C18 0 and C18:1 were almost evenly distributed.
RCONH2 in carp: The amounts of RCONH2 found in viscera were 172 μg% and the composition is as shown in Table 2. The main component of RCONH2 was C22:0, which was not detected in red sea bream. In addition, short chain RCONH2 were also detected (Fig. 5). On the other hand, only trace amounts of RCONH2 were found in the muscle.抄録全体を表示PDF形式でダウンロード (947K) -
小栗 幹郎1970 年 36 巻 6 号 p. 638-650
発行日: 1970/06/25
公開日: 2008/02/29
ジャーナル フリーPDF形式でダウンロード (1564K) -
1970 年 36 巻 6 号 p. 651
発行日: 1970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 (40K)
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