巻号一覧
4 巻, 5 号
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Mititaka UDA1936 年 4 巻 5 号 p. 289-293
発行日: 1936/01/08
公開日: 2008/02/29
ジャーナル フリーPDF形式でダウンロード (239K) -
Masao KIMATA1936 年 4 巻 5 号 p. 294-296
発行日: 1936/01/08
公開日: 2008/02/29
ジャーナル フリーVarious authors have reported that Cl' has very weak toxic action and in general its effect is negligible. Inhibitory action of NaCI in higher concentration is known to be due to the osmotic pressure. F' is the moat active among the halogen ions, as repeatedly shown by many investigators. According to EFFRONT(1), F' in hydrofluoric acid must be potent, as this acid is 10-20 times as inhibitory as hydrochloric ac??d. MEYERHOF(2) ha ?? studied the effect of halogen ions on the respiration of nitrifying bacteria and found that 0.05N NaF reduced the respiration by 30% and O.1N by 65%, O.1N NaBr reduced by 27% and 0.2N by 56%, 0.05N NaJ reduced by 44% and 0.1N by 57%. ISCHIKAWA(3) found that iodides even in low concentrations tend to inhibit ammonia formation by proteolytic as well as urea bacteria; no stimulation was evidenced. According to BOAS(4) NaJ or KJ in higher concentration than about 0.3M inhibits the growth of bacteria, but not the growth of molds. He found also that NaJ in concentration of 0.033M-0.003M stimulate the growth of yeast, but with the same compound of a concentration of 0.000008M the growth is worse than the control.
In the present experiment, I have studied the effect of halogen ions on the bacterial decomposition of fish muscle and on the growth rate of bacteria.抄録全体を表示PDF形式でダウンロード (175K) -
Kiyomatsu MATSUBARA1936 年 4 巻 5 号 p. 297-300
発行日: 1936/01/08
公開日: 2008/02/29
ジャーナル フリーPDF形式でダウンロード (253K) -
高橋 豊雄1936 年 4 巻 5 号 p. 301-302
発行日: 1936/01/08
公開日: 2008/02/29
ジャーナル フリーThe distribution of amino acid in the food stuffs has been studied by many investigators(1-21). While almost all authors hydrolysed their samples by acid and detected the distribution in the decomposition products, ROSEDALE(12, 13) digested his sample by pepsin and analysed the protin digested by pepsin. From the biochemical point of view, ROSEDAL'S process seems to be better than the others. Present author analysed the several food stuffs for fish after ROSEDALE'S method. The results obtained are as shown in Table 1.抄録全体を表示PDF形式でダウンロード (118K) -
V. チロシン及びトリプトファン含量に就て山村 彌六郎1936 年 4 巻 5 号 p. 303-304
発行日: 1936/01/08
公開日: 2008/02/29
ジャーナル フリーTyrosine and Tryptophane in animal bodies are considered as important amino-acids, because they can not be transformed from other substances and have particular functions, which none of the other substances in animal body has. So the animal has to take them up from its food. It may, therefore, be taken as a measure of the nutritive value of food-stuffs.
In the present paper are embodied the analytical data of Tyrosine and Tryptophane of ten kinds of food-organisms for fish. The method used for Tyrosine determination is that of FOLIN and MARENZI1), while TILLMANS and ALT'S2) method was used for the Tryptophane.
The results are summarized in Table 1.抄録全体を表示PDF形式でダウンロード (83K) -
島田 清, 田中 栄司1936 年 4 巻 5 号 p. 305-306
発行日: 1936/01/08
公開日: 2008/02/29
ジャーナル フリーInositol C6H6(OH)6, was found in muscles and various organs of mammals by KÖNIG, BÖRNER, ROSENBERGEN and others. Recently YOUNG(3) has determined inositol in the brains and muscles of ox, sheep, dog and rabbit. We have determined this compound in the muscles of various kinds of fishes by the method employed by YOUNG, with the results as were summarised in the tables 1 and 2. Inositol is present in the living muscles of fish, though varying in amount with species and individuals of the fish and with freshness of the muscle. It increases during autolysis, suggesting the presence of its mother substance in the fishmuscle.抄録全体を表示PDF形式でダウンロード (140K) -
宇野 道夫1936 年 4 巻 5 号 p. 307-309
発行日: 1936/01/08
公開日: 2008/02/29
ジャーナル フリー202, 617 individuals of Germo germo angled in the waters east of Nozima Promontory, Tiba Pref. were landed at Misaki harbour from May to June, 1935. With about 1, 500 samples out of them, the body lengths and weights were measured and the age was determined by counting, the winter rings on vertebra. The results my be summarized as follows: -
1. Most of fishing grounds situated, as shown in the figures in text, between longitudes 142° and 145°E, and between latitudes 34° and 35°N. They moved Lom southern waters in the NE direction as the days passed yielding catches gradually increased.
2. Schoals were composed of 6% of IV age group, 86% of V age group and 8% of VI age group during the said two months.
3. Mean and standard deviation of body lengths and of body weights for each age groups at 5 successive decades are as given in Table 2, the mean length appeared in the 2 months being 72.38cm, 79.15cm and 89.55cm respectively, and the mean weight, 8.090kg, 10.149kg and 13.380kg respectively.抄録全体を表示PDF形式でダウンロード (201K) -
宮本 秀明1936 年 4 巻 5 号 p. 310-314
発行日: 1936/01/08
公開日: 2008/02/29
ジャーナル フリーThe original drifter drag net, of which a model was made for study, is used in Lake Kasumigaura for fishing Sirauwo, Salanx microdon Bleek. The construction of net, the arrangement of net pieces and the method of plying of the net are shown in Figs. 1, 2 and 3. The modelling was completed according to TAUTI'S principle of model-net construction.
The tention of the warps under various pulling speeds obtained from the model experiment coincides with the tention of the original net as shown in Fig. 4. In the figure, the former are plotted with black circles and the latter with triangles and crosses.
The form of model net was sketched both from above and lateral sides under the pulling speeds, which are, when refferred to the originals, 1/12, 1/8, 1/4 and 1/2 mile/hour (Fig. 5).抄録全体を表示PDF形式でダウンロード (258K) -
近藤 仁1936 年 4 巻 5 号 p. 315-317
発行日: 1936/01/08
公開日: 2008/02/29
ジャーナル フリーThe study is made to know the influence of the size of cotton yarns composing the netting cord on the breaking strength and the flexibility. The results are as follows: -
When the linear density of cords is nearly the same,
i) the number of twists at which the cord shows the maximum strength is less numerous when it is composed of finer yarns;
ii) the cord with that or less number of twists is more flexible and stronger when it is composed of finer yarns.抄録全体を表示PDF形式でダウンロード (182K) -
菅野 進1936 年 4 巻 5 号 p. 318-320
発行日: 1936/01/08
公開日: 2008/02/29
ジャーナル フリーThe number of salmons which were found gilled on the leading branch of fixed nets installed at Voroskaya, West Kamtchatka, was analysed with respect to the distributions in the depth below the water surface, in the distance from sea-shore and in the direction. From the results (Table 1) the same factors of migration routes of the fish were inferred, taking into account the fact that the catch of each net varies parallelly with the number of fishes thus gilled (Fig. 1).
With each of pink, dog and red salmons, it can be concluded that there are groups migrating northwards as well as those migrating southwards throughout the whole fishing season; that the proportion of groups migrating northwards becomes higher from the earlier (before Aug. 2) to the main fishing season (from Aug. 3 to Aug. 15) and then is decreased towards the end of the season (after Aug. 16); that the fishes are found exclusively near the surface in the earlier, more widely in depth in the main and more or less deep in the later fishing season; and that the fishes are abundant in the most distant part from the shore in the earlier, in the intermediate and the next parts to the shore in the main, and again most apart in the later season.抄録全体を表示PDF形式でダウンロード (211K) -
尾崎 正夫1936 年 4 巻 5 号 p. 321-324
発行日: 1936/01/08
公開日: 2008/02/29
ジャーナル フリーIn July and August 1935, the writer was on board S. S. “Daisan-Un'yômaru”, a floating factory of Taiheiyô Gyogyô Kwaisya, to make the determination of the species of Oncorhynchus caught in the region extending from 51 north latitude to the south of Cape Kronotskii.
The results of detailed measurements with each one individual of each kind got in four successive fishing periods, A to D, as shown in table 1, together with some of the variations obtained with each 400 individuals, as shown in comparison with JORDAN'S results in Table 2, confirm that the fish, which are called (1) “Beni” or “Benizyake” by fishermen in this region, are Oncorhynchus nerka (Walbaum), (2) “Syake” or “Sake” are Oncorhynchus keta (Walbaum), (3) “Gin” or “Ginzyake” are Oncorhynchus kisutch (Walbaum), (4) “Masu” are Oncorhynchus gorbuscha (Walbaum) and (5) “Suke” are Oncorhynchus tschawytscha (Walbaum).抄録全体を表示PDF形式でダウンロード (251K) -
松浦 義雄1936 年 4 巻 5 号 p. 325-330
発行日: 1936/01/08
公開日: 2008/02/29
ジャーナル フリー1) The Lesser Rorqual, Balaenoptera acuto-rostrata Laeépède is commonly found in the adjacent waters of Japan and its distribution fairly coincides with those of fin whales; In summer it is caught at the southern seas of Kurile Islands (on both Okhotsk and Pacific sides), while in winter its whaling grounds are in Yellow Sea, Tusima Kaikyo and the adjacent waters of “Syanzen”, Korea.
2) The lesser rorquals get closest to the shore of all the whalebone whales and, as fin whales do, they also migrate far into Yellow Sea in the winter season where the salinity of the surface water is as low as 32.00‰ or even lower (euryhaline species).
3) The breeding appears to he in the south-western seas of Japan (Yellow Sea, Tusima Kaikyô and its adjacent seas) and judging from the data available on the foetuses measured at various shore-stations in the years 1932-1935, copulation may be presumed to take place chiefly in the season from December to March and the period of gestation covers about ten or eleven months. Newly born calf measures 2.4-2.7m. in body length.
4) The body length of the whales caught extends from 6.1m. to 9.1m. and the female 7.0m. long was found pregnant. The individuals captured in the northern regions are superior to those captured in the southern seas in body length, the fact was also observed in any other whalebone whales. Regarding the southwards migrations of the whales in the adjacent waters of Japan, the following two main courses may be presumed as in the fin wha'es; thus one herd descends Japan Sea, and the another one goes down Pacific coast of Honsyu, at winter advances.抄録全体を表示PDF形式でダウンロード (381K) -
田内 森三郎, 三善 清旭1936 年 4 巻 5 号 p. 331-334
発行日: 1936/01/08
公開日: 2008/02/29
ジャーナル フリーThis study is based on the yearly records of the catch and the number of liberated fry in the above-mentioned lakes.
In each group of fishes, which compete for nearly the same food and living space with each other, the percentage of the total catch of the artificially propagated species in the groups is calculated, and the mean values of the percentage (r and r0 in the periods in which the liberated fry is caught and not respectively) are determined. The mean values of the yearly liberation of the fry of that species (w' in weight, N' in individuals) and the mean values of the yearly catch of that species (w in weight, N in individuals) in the period in which the liberated fry is caught are calculated.
The effect of the liberating fry on the propagation is estimated with the following three ratios : r-r0:r0 (The catch of fishes due to the liberation: that due to the natural propagation),
r-r0/r w/w' (The recapture ratio of liberated fry in weight) and r-r0/r N/N' (The recapture ratio of liberated fry in individuals).抄録全体を表示PDF形式でダウンロード (275K) -
久保 伊津男1936 年 4 巻 5 号 p. 335-338
発行日: 1936/01/08
公開日: 2008/02/29
ジャーナル フリーThe experiments were done at the Yosida Piscicultural Laboratory of the Imperial Fisheries Institute, situated near the estuary of the Ooi River in the Siduoka Prefecture, during a period from Oct. 5 to Nov. 21, 1934. Two experimental ponds (I and II) allotted for the experiment differ greatly in size but are nearly the same in depth, namely, about 5 feet deep. The “feeding velocity” of the eel (Anguilla japonica) cultured in these ponds was measured by the weight of the food consumed by the fish either in a minute (II) or in five minutes (I) and was found to stand in closer relation to water and air temperatures read at each experiment (Fig. 1). This relation can be said to be exponential for the majority of the data (Figs. 2 and 3), the deviations (as plotted A, B, etc., in the figures) concurrent with unusually greater or smaller velocity of the wind. The air-pressure did not cause any effect on the feeding velocity.抄録全体を表示PDF形式でダウンロード (255K) -
水温・塩分及び透明度の変化と相互關係木村 喜之助1936 年 4 巻 5 号 p. 339-352
発行日: 1936/01/08
公開日: 2008/02/29
ジャーナル フリー1. Remarkable changes in water temperature, seemingly keeping pace with the tidal currents, were observed at the hydrographical station near Awasima Isle, in the lower layers of water during the stratification periods1). 7.3°C on July 30, 1933 and 9.1°C on August 25, 1934 were the greatest values, in the respective years, of the difference in temperature at 25m, recorded between two successive observations, which were carried out with several hours' intermissions.
The water so cool as 14 to 15°C appeared in the lower layers of about 20m in summer, when the air temperature was about 30°C. Such cool water must have been carried there by the tidal currents from the bottom of the wider north-eastern area of Suruga Bay about 100m deep, where a mass of water at the same temperature was found to be spreaded.
2. The quality of the sea-water at the station is determined by the proportion of mixing of (A) the surface water of Kurosio (Japan Current), (B) the water of River Kano and (C) the bottom water spreaded in the wider north-eastern area of the bay. The surface waters are mainly affected by the inflow of the river-water (B) and the water of lower layers by the upwelling of the bottom water (C), while the waters of intermediate layers by all of the three kinds. Consequently, the thermo-haline curve at the station assumes an hyperbolic curve, as shown in Fig. 6. The deformation of such a thermo-haline curve from decade to decade enabled the author to discuss the quantities of the three kinds of waters inflowing to the station.
In such a longer variations, temperature or salinity at the surface attains the maximum or the minimum values sooner than in the lower layers. The surface salinity attains generally the minimum values about one and half days earlier than transparency or the salinity at 25m, suggesting the different type of the current at both levels.抄録全体を表示PDF形式でダウンロード (632K)
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