巻号一覧
31 巻, 4 号
選択された号の論文の12件中1～12を表示しています
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森 勇, 佐々田 昭七1965 年 31 巻 4 号 p. 253-257
発行日: 1965/04/25
公開日: 2008/02/29
ジャーナル フリーPopulations of the jack mackerel and the mackerel have been exploited by fishing of the purse-seine boats in recent years.
The fishing grounds of those populations are shallow in depth and located west off Cheju Do I. in the Yellow Sea.
The jack mackerel in catches are 32-33cm long in body length, and immature. The rate of individual number of the jack makerel is higher than that of the male in the sex ratio.
The fishing season is about 2 months from the last ten days of October to the last ten days of December, and as the season progresses the fishing grounds move towards Kuchibinose Bank.
Generally speaking, it is likely that the fishing grounds are made in the areas having 15-20°C water temperature zones.抄録全体を表示PDF形式でダウンロード (285K) -
藤田 矢郎1965 年 31 巻 4 号 p. 258-262
発行日: 1965/04/25
公開日: 2008/02/29
ジャーナル フリーEopsetta grigorjewi (HERZENSTEIN) and Tanakius kitaharai (JORDAN et STARKS) are cammon flatfish in Japan. The spawning season of these fishes seems to extend from Junuary to early March in the western part of Yamaguchi Prefecture. The author carried out the artificial insemination at Senzaki Machi, Yamaguchi Prefecture on February 28, 1960 and reared the hatched larvae in the glass jar, feeding with fertilized eggs of the sea-urchin and brine shrimp nauplii.
The eggs of both species are colorless and bouyant, spherical in shape, with no oil-globule. The outer surface of the egg-membrane of these fishes has faint network sculaptures. The egg of E. grigorjewi is measured 1.10-1.20mm and T. kitaharai is measured 1.20-1.30mm in diameter. The incubation period of E. grigorjewi is about 93 hours and T. kitaharai is 103 hours at the water temperature 11.0-13.8°C.
The newly hatched larva of E. grigorjewi is 3.0-3.2mm in total length, with 44-45 (12 ?? 13+32) myomers. The yolk is absorbed in 5-6 days. The larvae are free from any cross band of the chromatophores. 12 days after hatching, the larvae all die out.
The newly hatched larva T. kitaharai is 3.4mm in total length, with 51-54 (11 ?? 12+40 ?? 42) myomers. Many melanophores and xanthophores are distributed on the larval fins as well as the body. In 2 days the xanthophores form three cross bands on the tail part of the body. The yolk is consumed in 5 days. In 29 days one of the reared larva attains 7.5mm in total length. The eyes are located symmetry on both sides of head.抄録全体を表示PDF形式でダウンロード (455K) -
吉光 虎之助1965 年 31 巻 4 号 p. 263-268
発行日: 1965/04/25
公開日: 2008/02/29
ジャーナル フリーJudging from all the available data obtained in the salmon season for the seven years from 1954 to 1960, salmon mother ships began their fishing operations at the end of May in those years, when prominent fishing grounds for salmon must have been formed in the area situated in latitude 46°N to 52°N and longitude 165°E to 170°E, where red and chum salmon were expected to come swarming about. There seems to have been two centers of the salmon fishing grounds; one, up in the north of the area and the other, down in the south.
In the area in the west longitude south of the Aleutian, mainly in the north of 50°N, there seemed to be every indication for red salmon to appear late in May of those seven years. Early in June salmon fishing grounds may have been appointed in two areas; one to the south of the Aleutian Islands, and the other, in the Bering Sea north of the Aleutian, with the center of the fishing grounds moving towards the Bering Sea in mid-June. Toward longitude area may have shifted to the east as far as 178°W, only those of minor importance still remaining early in July.
Up to the mid-June in those seven years in the area east of 165°E to the south of the Aleutian, there seems to have been a pretty large catch of red salmon, while in the area west of the same longitude more chum salmon were found than red salmon. Late in June, however, the main fishing grounds for red salmon are believed to have been turned to the area west of 165°E.抄録全体を表示PDF形式でダウンロード (436K) -
三島 清吉, 上野 元一, 川島 利兵衛1965 年 31 巻 4 号 p. 269-276
発行日: 1965/04/25
公開日: 2008/02/29
ジャーナル フリーSalmon in the North Pacific Ocean are widely distributed and migrate from the open sea to the coast in a broad area. When they have been captured by the drift gill-net, it has been observed that they are gathered densely here and there in the net. But, the characteristics of their spatial distribution have not been clarified yet in this area.
Judging from these phenomena, it is considered that salmon must have the gathering instict and make social grouping in these areas. The authors applied the method in which the number of captured fish for the net was taken as the stochastic process for analysis of these phenomena and tried to clarify the spatial distribution of the salmon in the above mentioned area. The number of fish include the four species; that is, pink, chum, red and silver salmon.
Put the captured number of fish in the net as variables X(i) against numerical order of the net T, these variables fluctuate for their mean value as an irregular phenomenon.
The auto-correlation coefficients and power spectra for the variables are calculated with regard to the fluctuations in the stochastic process. According to these calculations, it was deduced that the existences of remarkable power in the spectra would mean the grouping of the salmon.
Using the data of 1960 and 1963 from the Okhotsk Sea, 1961 and 1963 from the Pacific Ocean, the calculations were performed by the equations (1), (2), (3) and (4).
According to the results of these calculations, the various periodic components in the power spectra indicate the characteristics spatial distribution of the school.抄録全体を表示PDF形式でダウンロード (389K) -
中才 啓, 川上 太左英1965 年 31 巻 4 号 p. 277-280
発行日: 1965/04/25
公開日: 2008/02/29
ジャーナル フリーPDF形式でダウンロード (179K) -
III. -Prorocentrum摂取中の貝類の毒性について中島 雅男1965 年 31 巻 4 号 p. 281-285
発行日: 1965/04/25
公開日: 2008/02/29
ジャーナル フリーPDF形式でダウンロード (452K) -
3, 5-di-tert-butyl-4-hydroxyanisole (3, 5-di-BHA) の適用性外山 健三, 猿谷 九万1965 年 31 巻 4 号 p. 286-292
発行日: 1965/04/25
公開日: 2008/02/29
ジャーナル フリーROSENWALD reported that 3, 5-di-tert-butyl-4-hydroxyanisole was more effective antioxidant than BHA2). The authors have applied this antioxidant in a variety of marine products to prevent oil autoxidation. In the preliminary experiments they confirmed that this compound exerts a strong antioxidant effect on saurel oil subjected to sun light (Table 2) and saury oil stored at 30±1°C (Table 3). However, this antioxidant was rather ineffective in salted-and-dried saury (Tables 4 and 5) and boiled-and-dried sardine (Table 6) as compared with BHA, and was almost equal in salted saury as with BHT (Table 7). This may be due to the low solubility of the antioxidant (c. a. 4.9% at 20°C in saury oil) and high melting point (104.0-105.0°C). In order to use 3, 5-di-BHA effectively in the protection of marine products, the usual method of application has to be modified.抄録全体を表示PDF形式でダウンロード (406K) -
小栗 幹郎, 高田 直子1965 年 31 巻 4 号 p. 293-296
発行日: 1965/04/25
公開日: 2008/02/29
ジャーナル フリー1. A simple method to collect urine from fish was described, using the snakehead fish, Channa argus, and the following results were obtained on the urine and blood serum of this fish.
2. Average calcium levels of urine and serum in this fish were 1.55mEq/L and 6.11mEq/L, respectively.
3. Mean value of the urinary osmotic concentration was 49.7mOsm/kg water, and that value in serum was 282.4mOsm/kg water.
4. Average pH values of urine and serum were 6.28 and 7.53, respectively, and the increase of urinary pH was observed by the administration of Diamox, an inhibitor of carbonic anhydrase.
Authors thank Dr. I. HIBI and Mrs. K. YAMAGUCHJ, Department of Pediatrics, Faculty of Medicine, the University of Tokyo, for their kind assistance in the measurement of osmotic concentrotion of urine and blood serum of fish.抄録全体を表示PDF形式でダウンロード (401K) -
白身肉,血合肉の比較榎本 則行, 手島 新一, 冨安 行雄1965 年 31 巻 4 号 p. 297-301
発行日: 1965/04/25
公開日: 2008/02/29
ジャーナル フリーThe protein denaturation of separated white and bloody muscle of jack mackerel (Trachurus japonicus) during the freeze-dehydrating and the subsequent storage (30°C) was studied by following the extractability of muscle protein with 0.6M KCl and the change of salting-out curves, and compared with those of the “whole flesh” (white and bloody muscle not separated from each other) freeze-dehydrated at the same time. The results obtained are as follows:
1) Amounts of extracted myosin decreased remarkably during the freezing and at the end of freeze-dehydrating, but this severe denaturation of protein was regarded by authors as exceptional results owing to the faltiness of experimental conditions.
2) Through freeze-dehydrating process the amounts of the so-called albumin fraction decreased in the bloody muscle and the “whole flesh”, but they remained almost unchanged in the white muscle.
3) The salting-out curves of the extractable myosin with 0.6M KCI suggested that the components of myosin fraction were different among these three kinds of muscles, and salting-out patterns of each muscle changed conspicuously during the experimental period.
4) The rapid denaturation of protein was observed on the first day of the storage at 30°C.抄録全体を表示PDF形式でダウンロード (330K) -
須山 三千三, 中島 喜久一, 野中 順三九1965 年 31 巻 4 号 p. 302-306
発行日: 1965/04/25
公開日: 2008/02/29
ジャーナル フリーEuphausia, a kind of mysis, is known as a feed stuff of aquatic animal and cetacean; the nutritive constituents of the Euphausia are being watched with interest from the biochemical as well as technological points of view. In the present experiments, the protein and nonprotein nitrogenous constituents of the Euphausia, E. pacifica, E. superba and E. vallentini, have been analysed by the automatic amino acid analyser or by the individual chemical methods.
The chemical compositions of fresh samples are given in Table 1, and the amounts of crude protein were around 17%. The pattern of amino acids in hydrolysates of protein given in the Table 2 was similar to that of muscle protein of common crustacean reported by the other authors, but somewhat higher content of tryptophan in the present samples are of interest from the nutritional viewpoint.
The amount of extractive nitrogen of E. pacifica (whole) was higher than that of E. superba (muscle), and the concentrations of peptide-composing amino acids, free amino acids and their related compounds of these two are tabulated in Table 3. Relatively large amounts of alanine, glycine, proline, arginine, taurine, trimethylamine oxide and betaine were found, and the calculations of nitrogen summarized in the table show that 94 and 96% of extractive nitrogen are respectively accounted for.抄録全体を表示PDF形式でダウンロード (299K) -
伊藤 啓二1965 年 31 巻 4 号 p. 307-311
発行日: 1965/04/25
公開日: 2008/02/29
ジャーナル フリーOccurrence of D-glyceryltaurine in the ethanolic extracts of a red alga, Gymnogongrus flabelliformis has been established.
Only 39% of the extractive nitrogen was accounted for as ammonia and free amino acids, in which arginine, citrulline, glutamic acid and glyceryltaurine predominated. After acid hydrolysis, the figure increased only to 44%, indicating the paucity of peptides and the amino acid pattern was markedly changed by the formation of γ-aminobutyric acid and ornithine, in place of the considerable loss of arginine and citrulline.抄録全体を表示PDF形式でダウンロード (309K) -
富山 哲夫, 白石 悦子1965 年 31 巻 4 号 p. 312-318
発行日: 1965/04/25
公開日: 2008/02/29
ジャーナル フリーTOMIYAMA et al2) reported previously that tylosin could be heat-inactivated both in solution and in tissues by ferric iron and/or autoxidized oil and be prevented from its inactivation by the addition of isoamylgallate and chelating agents. YOKOSEKI et al3), however, pointed out a possibility that the decrease in tylosin on heating various tylosin-containing muscle tissues might be due to the adsorption of tylosin on protein coagulum.
The present data clearly indicated that tylosin included in fresh muscle tissue could be inactivated upon heating by the reaction with reducing group(s), most probably sulfhydryl group in situ or formed on heating the tissue (Tables 2, 10 and 11). This type of inactivation was inhibited by the presence of oxidizing agents (Tables 7 and 8). A possibility of leaving some tylosin activity adsorbed on protein coagulum of muscle tissue can be eradicated by the present result showing that an added amount of tylosin was nearly completely recovered in a non-coagulable part of the tissue by heating it with potassium bromate at pH 7 (Table 12).抄録全体を表示PDF形式でダウンロード (471K)
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