巻号一覧
28 巻, 9 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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マアジの游泳型と装餌効果田ノ上 豊隆1962 年 28 巻 9 号 p. 847-850
発行日: 1962/09/25
公開日: 2008/02/29
ジャーナル フリーOn the horse-mackerels hooked at the six different parts of the body (Fig. 1) the swimming pattern and the number of the fish found alive were measured during the periods segmented by the time unit of hour and extending to the limit of six hours; with the following results obtained.
1) Throughout the six cases covering all the hooking parts a, b, c, d, e and f, the majority of horse-mackerels were seen to be kept alive, at least, for 1-2 hours.
2) Through the greater part of the hooked horse-mackerels, only the downward swimming pattern can be observed.
3) So far as their hooking parts were kept within the three parts of a, b and c, more than half of the horse-mackerels were found to be alive even after more than 4 hours.
4) Beyond the limit of six hours, almost no horse-mackerels were found alive.抄録全体を表示PDF形式でダウンロード (254K) -
スズキの食生活畑中 正吉, 関野 清成1962 年 28 巻 9 号 p. 851-856
発行日: 1962/09/25
公開日: 2008/02/29
ジャーナル フリーThe Japanese sea-bass, Lateolabrax japonicus, a valuable food fish, changes the main food from Mysis to shrimps in autumn of the first year of life in Matsushima Bay. After emigrated to the coastal open sea, the species mainly eats fishes and shrimps, raising the trophic niche as the fish grows larger.
Considering from the results of feeding experiments the fish in nature does not usually eat as much as it can eat, and this will be caused from an insufficient share of natural feed. The following species can be enumerated as supreme competitors in feeding; Pseudoblennius cottoides and Hexagrammos otakii in the Zostera area, and Sebastes oblongs and Sebastes schlegeli outside of the Zostera area.抄録全体を表示PDF形式でダウンロード (405K) -
スズキの成長畑中 正吉, 関野 清成1962 年 28 巻 9 号 p. 857-861
発行日: 1962/09/25
公開日: 2008/02/29
ジャーナル フリーThe Japanese sea-bass, Lateolabrax japonicus, after hatched out in December or January in Sendai Bay, grows rapidly in Matsushima Bay attaining to 200mm, 135g at the end of the first year and to 300mm, 410g at the second year of life. This rate of growth is approximately eightfold in weight as much as that of Sebastes inermis, the most common fish in the Zostera area of Matsushima Bay. However, considering from the results of the feeding experiments, the fish in nature does not usually give full scope to its growth potential and would grow more rapidly provided with more sufficient food supply even under the unchanged conditions of non-biological circumstances.抄録全体を表示PDF形式でダウンロード (1115K) -
1961年秋季の表層海流丹羽 正一, 千田 哲資1962 年 28 巻 9 号 p. 862-869
発行日: 1962/09/25
公開日: 2008/02/29
ジャーナル フリー1. The surface current in autumn of the purse seine fishing grounds around Oki Islands for the period, November, 1961 to February, 1962, was studied by means of drift bottles.
2. Out of a total of 450 bottles released, 119 (26.5%) were recovered.
3. Because of the prominence of the winter monsoon and then, of the wind-induced southwards movement of bottles, the distances of drift were rather short, almost all of the recoveries being made in the region to the west of Pt. Rokugo of Noto Peninsula with three exceptions. At the same time, durations between releases and recoveries were comparatively short, a half of ultimate recoveries being made within the first 20 days since release, and 97% within 60 days.
4. Corresponding to 74% of the total recoveries, the drift-speed was estimated as 0.1-0.4 knots, and in the case of bottles recovered in the sea-off as 0.8-0.9 knots.
5. The south-westwards surface current in the vicinal sea region of Saigo was not recognized in this period, and this was supposed to be the cause of poor catch of the purse seine fishing in this area in the season of autumn and winter, 1961.抄録全体を表示PDF形式でダウンロード (480K) -
漁獲対象魚の卵・稚仔の出現A. マイワシ・ウルメイワシ・カタクチイワシ丹羽 正一, 千田 哲資, 川口 哲夫1962 年 28 巻 9 号 p. 870-875
発行日: 1962/09/25
公開日: 2008/02/29
ジャーナル フリーTo study on the actual state of spawning of commercial fishes in the fishing grounds around Oki Islands, the vertical hauls from 50m level in depth to the sea surface with “Marutoku”-net were operated during the years from 1957 to 1961 with following result:
The periods of occurrence of eggs and larvae were April to. June (mainly April) for sardine and round herring, and April to November (mainly May to July) for anchovy.
The average numbers of eggs per haul during main spawning seasons were 4.8 for sardine (April), 1.6 for round herring (April) and 20.6 (May) -12.7 (June) for anchovy.
Eggs and larvae of sardine occurred mainly in the area on the continental shelves, and their distributions were most strictly limited there but eggs and larvae of anchovy were considerably abundant in the offing, as well.
As for sardine and round herring, the collected number of eggs and larvae decreased year by year during survey period, and in 1961 those of eggs of sardine and round herring were 0.4% and 2% against to those in 1958. The collected number of eggs and larvae did not coincide with the catch of adult fish during the spring fishing season in each year.
Comparing with the results of collections in the adjacent waters to Goto Islands, one of the most important spawning grounds of sardine in Japan, the collected number of eggs of sardine, round herring and anchovy per haul in this area were not little.抄録全体を表示PDF形式でダウンロード (377K) -
磯建網漁業の漁獲量と漁具の特性について塩川 司1962 年 28 巻 9 号 p. 876-883
発行日: 1962/09/25
公開日: 2008/02/29
ジャーナル フリーUsing the records of commercial catches on the bottom gill-net fishery (Kashi-ami) and using the results of the research of the catches taken by the bottom gill-net (Takasu-ami), the catches and the characteristics of the fishing gears were discussed. The results obtained from this study are as follows:
1) This gill-net (Kashi-ami) is so fished for taking the warm-sea fishes in this region, that the main fishing season is from April to July and poor, in winter. The resources of this fishery with the exception of the stock of Japanese spiny lobster, Panulirus japonicus are stable comparatively (Figs. 1 and 2).
2) The type of frequency distribution curve of the catch per a boat-day for a year is like logarithmic distribution but in major fishing season they form logarithmic normal distribution curve. The average catch is about 9.8kg and the coefficient of variation is 0.9. Accordingly, it is demonstrated that this fishery is very small scale and unstable (Figs. 3 and 4).
3) The fishing ability of the net made of nylon is larger than that of cotton, especialy on the moving or active season of the objective fishes (Table 1).
4) Though the “Kashi-ami” is chiely fished for taking the coastal resident fishes, the “TaKasu-ami” is almost used for the coastal moving fishes and is more selective in its fishing than the former. The catch and coefficient of its variation on the “Takasu-ami” fishery are respectively 1.5 and 1.1 times more than those of the “Kashi-ami” (Fig. 5 and Table 2).抄録全体を表示PDF形式でダウンロード (565K) -
磯建網魚類群集の生態的解析塩川 司1962 年 28 巻 9 号 p. 884-890
発行日: 1962/09/25
公開日: 2008/02/29
ジャーナル フリーIn the present paper, the author analysed ecologically the fish population taken by the bottom gill-net in the coastal water of Tomioka during the four years from 1956 to 1959. The results obtained from this study are as follows:
The inner bay is for the nursery ground, and the fish population there consists mainly of the smaller fishes (young) than those of the other fishing grounds. But the fish populations in the outer bay and open sea consist of the large-size (adult), and most of them are relatively similar in their length composition each other, and have a tendency to migrate actively between each grounds (Fig. 1).
Even the unit catch per ten nets on the spiny lobster, Panulirus japonicus or file-fish, Stephanolepis cirrhifer is less than 3 in number, and the coefficient of its variation is comparatively large. In, other words, the net is not used selectively for taking dense or large schools. These facts demonstrate the characteristics of this net (Figs. 2 and 3).
Further, the gill-net is used almost for the spawners and feeders from spring to autumn, specially for the spawners from spring to summer (Fig. 4).抄録全体を表示PDF形式でダウンロード (441K) -
女川湾付近におけるエゾアワビの生産構造の解析酒井 誠一1962 年 28 巻 9 号 p. 891-898
発行日: 1962/09/25
公開日: 2008/02/29
ジャーナル フリーAnnual fluctuation in catches of abalones in northern part of Japan is quite significant. The present study has been made to search the cause of fluctuation in the production of abalones.
The results are as follows:
(1) The annual fluctuation in the growth of the abalone is considered to be no significant correlation with the environmental factors such as the temperature and salinity of water.
(2) The said fluctuation shows a high correlation with the amount of catch of sea-weed. Especially, it is recognized that it has a significant and positive correlation with the amount of catch of Undaria pinnatifida, a brown sea-weed favorite food for abalone, as shown in Table 8.
(3) The annual fluctuation in the amount of catch of the abalone is parallel to that of the growth of the abalone.
(4) It has already been reported by the authors1) that U. pinnatifida and Laminaria are the most suitable food for H. discus hannai. Presuming from these facts, it is easily conceivable that the production of abalones is influenced by the production of sea-weed, especially by that of the brown-algae such as U. pinnatifida or Laminaria.
(5) That the fluctuation in production of U. pinnatifida is closely related with the variation of the Kurile current, commonly called “Oyashio”, has already been reported by the author6). In consequence, it is assumed that the production of the brown-algae like U. pinnatifida being influenced by the condition of “Oyashio”, furthermore, the production of the brown-algae becomes the main factor affecting on the production of the abalone.抄録全体を表示PDF形式でダウンロード (591K) -
成長に関する研究酒井 誠一1962 年 28 巻 9 号 p. 899-904
発行日: 1962/09/25
公開日: 2008/02/29
ジャーナル フリーSince it was clarified by the author that the age of the abalone, Haliotis discus hannai, can be determined by means of counting annual rings of the shell, the present study has been made to search the growth of abalones in nature in the region of Onagawa Bay, Miyagi Prefecture. While by rearing experiments the seasonal changes of growth and fatness, and the effect of the environmental factors such as water temperature and food on the growth have been investigated.
1. In rearing experiments, it is assumed that the growth of abalone is slowed down in winter, and in water temperature below 7°C almost no growth takes place. As the water temperature rises, they show rapid growth, reaching maximum in the period from April to June. In the period from August to October their growth is again slowed down and their weight decreases temporally. The decrease of growth rate in autumn is assumed not to be due to the decrease of water temperature, but to the maturation of gonad.
The abalone gains flesh remarkably from February to July. Thereafter it gets thin in consequence of the spawning. In winter it begins to gain flesh again.
2. The growth rate of the natural abalone in the principal fishery areas of Onagawa Bay is shown in Table 3. Their growth differs somewhat from place to place, but in general, their shell length becomes 4.7cm in 2 years, 8.5cm in 4 years, and 10cm in 5 years.抄録全体を表示PDF形式でダウンロード (378K) -
ニジマス餌料の消化率およびその向上方法について山田 充阿弥, 菊地 嶺, 松島 又十郎, 大上 皓久1962 年 28 巻 9 号 p. 905-908
発行日: 1962/09/25
公開日: 2008/02/29
ジャーナル フリーDigestibilities on various commercial feedstuffs for rainbow trout culture were tested by labelling the diets with P32 in the form of water-insoluble ammonium phospho-molybdate.
The poor digestibility of fish meal was not improved by rendering it into powder as fine as 300 mesh through, neither affected by addition of commercial protease. The latter phenomenon may due to the too low temperature for the enzyme to act on the fish meal while staying in the fish stomach.
The good digestibility of dried mysis powder freshly prepared was greatly reduced by the addition of hot-water extracts of degenerated dried mysis. Therefore one must be more careful about the degeneration of feeding stuff during the storage which is rather common phenomenon to trout farms, and cause a considerable loss in efficiency of materials.
The highest digestibility of fish soluble will naturally be ascribable to a high content of water soluble substances.抄録全体を表示PDF形式でダウンロード (300K) -
軟体動物および甲殻類動物組織中のホマリンの分布研究福島 清1962 年 28 巻 9 号 p. 909-913
発行日: 1962/09/25
公開日: 2008/02/29
ジャーナル フリーDistribution of homarine in muscle and vicera was polarographically studied in some mollusca and crustucea to give the following results.
1) The 1st reduction wave of synthetic homarine•HCI was separated refinedly from the 2nd wave in the electrolyte of acidic buffer (Fig. 1, D and E).
2) A linear relation was found between the diffusion current of the 1st wave and the concentration of synthetic homarine•HCl (Fig. 2).
Thus homarine in extracts from tissues was also estimated by measuring the current of the 1st wave, but not the 2nd wave (Fig. 1, C).
3) Homarine content seemed to be higher in liver tissues than in the other tissues.
As far as content of homarine in several muscles was estimated in this experiment, the content of homarine in Penaeus japonicus was the highest (0.11% on wet basis), and 0.03-0.07% of homarine (on wet basis) was contained in tissues of other species, but very few in Venerupsis philipinarum and Corbicula leans (Table 1).抄録全体を表示PDF形式でダウンロード (327K) -
N末端アミノ酸残基橋本 周久, 松浦 文雄1962 年 28 巻 9 号 p. 914-919
発行日: 1962/09/25
公開日: 2008/02/29
ジャーナル フリーHb components F and S of chum salmon were assayed for N-termìnal resìdues by the DNP method. Valine was identified as N-terminal amino acid for both components. The number of the valyl residues per molecule of Hb was estimated to be 2 for each component in a strong contrast to mammalian Hb's havìng 4 N-terminal residues.抄録全体を表示PDF形式でダウンロード (369K) -
関根 隆, 堀江 進, 佐伯 和昭1962 年 28 巻 9 号 p. 920-923
発行日: 1962/09/25
公開日: 2008/02/29
ジャーナル フリーUsing a liquid medium, 5% NaC1 containing mannitol ethyl violet broth1) for the selective cultivation of the so-called Takikawa's pathogenic halophilic bacteria, the authors isolated 42 strains having a halophilic property from coastal sea-water, sewage, and the other contaminated waters. Regarding general biological characters, 33 strains among isolated organisms were found to be identical with those of the Takikawa's group.
Comparative investgation between Takikawa's strains and the isolated ones revealed that all of the organisms may be devided into two groups, I and II. The group II organisms have the following characteristics; fermentative of sucrose, ability to grow in a 10% NaC1 containing broth, production of acetylmethylcarbinol, and swarming on an agar plate, while the organisms belong to group I are lack in the aforementioned characters.
The majority of the Takikawa's strains were found to belong to the group I, on the other hand almost all of the strains isolated from natural environments in the present study, belonged to the group II. These facts may strongly suggest that the true pathogenic organisms belong to group I, and the group II organisms which are much more abundant in natural environment than the group I are non-pathogenic.抄録全体を表示PDF形式でダウンロード (275K) -
清水 千秋, 松浦 交雄1962 年 28 巻 9 号 p. 924-929
発行日: 1962/09/25
公開日: 2008/02/29
ジャーナル フリーPDF形式でダウンロード (1400K) -
岡市 友利, 橋本 芳郎1962 年 28 巻 9 号 p. 930-935
発行日: 1962/09/25
公開日: 2008/02/29
ジャーナル フリーThe biological assay method of nereistoxin using killifish is described. The minimum lethal dose to killifish was about 0.3 ppm. The concentration of the toxin in the live worms was 60 ?? 105mg%. The LD50 to mice was approximately the same as reported by NITTA and was 33.6 mg/kg as hydrogen oxalate. Neither a growth-promoting action to Streptococcus faecalis nor an antagonizing one to a-lipoic acid was observed. Nere istoxin was not so effective as commercial insecticides, but revealed a remarkable anesthetizing activity and immediate effect on some noxious insects.抄録全体を表示PDF形式でダウンロード (970K) -
小野 豊樹, 永山 文男, 吉金 卓一郎, 武藤 義則1962 年 28 巻 9 号 p. 936-940
発行日: 1962/09/25
公開日: 2008/02/29
ジャーナル フリーAs the technique for measurement of fluorescence is simple and not time-consuming, this method has been proposed by several workers for food inspection which requires rapidity1-10) However, there is no established method for fish. The present investigation was undertaken to see whether fluorometry could be used for determining the quality of fish.
The sole flesh gave a clearr and considerably fluorescent solution when extracted with 5 volumes of 70% ethanol, but gave a turbid solution which is not suitable for fluorometry when extracted with water (Table 1). Maximum fluorescence of the extracts was found at 460mμ. Therefore, the measurement could be standardized with quinine sulfate solution. Heat treatment of flesh increased fluorescence of the extracts (Figs. 1 and 2), especially in the presence of glucose (Table 2). Fluorescence of the extracts from spoiled flesh was greater than that from fresh flesh (Table 3).
Development of fluorescence of the extracts was closely related to the storage time. Especially, fluorescemce of the extracts from the flesh which was steam boiled with glucose seemed to be more excellent indication of quality of the flesh than VBN value (Figs. 3A-3D).抄録全体を表示PDF形式でダウンロード (294K)
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