巻号一覧
6 巻, 2 号
選択された号の論文の10件中1～10を表示しています
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Hiroaki AIKAWA1937 年 6 巻 2 号 p. 59-65
発行日: 1937/07/15
公開日: 2008/02/29
ジャーナル フリーPDF形式でダウンロード (408K) -
高橋 豊雄1937 年 6 巻 2 号 p. 66-68
発行日: 1937/07/15
公開日: 2008/02/29
ジャーナル フリーThe various parts, into which the fin whale carcasses are dissected for respective handling, are weighed by the flensers and other operators. The weight, W, of those parts is, in the present study, examined in relation to the body-length, L, of the whale and proved to be given by such formula as W=aLx, with the values of the constants, a and x, as are, shown in Table 1.抄録全体を表示PDF形式でダウンロード (163K) -
木村 喜之助1937 年 6 巻 2 号 p. 69-72
発行日: 1937/07/15
公開日: 2008/02/29
ジャーナル フリーThe quantity, f=1, 000 w/l3, where w is the weight in g and l the length in cm of fish body, the so-called “quality indicator” or “condition factor, ” has been discussed by the writer to re-present the “fatness” of the sardine from the north-eastern parts of the bays of Sagami and Suruga (Bull. Jap. Soc. Sci. Fish., 3(6), 1933, 312-326).
In the present paper, the writer expresses f by f= 1, 000 × Kρc1c2, where c1l and c2l are the height and the breadth of the fish respectively, ρ the density and K a constant, to examine with the sardine fished in Tôkyô Bay in 1936, as to which of the density or the thickness of the body actually causes the variation in f.
The variation in ρ of individual fish, having the coefficients of variation of 0.003-0.007, can not cause that in f, which has the coefficients of 0.03-0.06. On the other hand, the coefficient of correlation between f and c1c2 is so high as 0.89 on an average.
The value of f averaged for each group, -f showed an increase from June to August, follow-ed by a slight decrease in September, and another rapid increase until mid-November, having attained 14•5. The first increase was accompanied by a diminishing but the second by a re-markable increase in the density averaged for the group. The relative fat-content in the body seems to have little effect on -f.
Thus, the factor which governs the values of f is the thickness, but not the density of the body. Consequently, f is rather proper to be called the “thickness-coefficient” in popular sense, than “fatness” as in the previous paper.抄録全体を表示PDF形式でダウンロード (407K) -
川名 武1937 年 6 巻 2 号 p. 73-74
発行日: 1937/07/15
公開日: 2008/02/29
ジャーナル フリーFrom the thirteen years' catch statistics from 1924 to '36 and the records of regular of regular oceanographic observations, there is found a negative correlation between the catch per boat of large tunny, weighing above 20 kwan (75kg), and the difference in temperature at the surface and at 50m depth.抄録全体を表示PDF形式でダウンロード (121K) -
山田 鐵雄1937 年 6 巻 2 号 p. 75-78
発行日: 1937/07/15
公開日: 2008/02/29
ジャーナル フリーWatasenia scintillans (BERRY), “Hotaru-ika, ” one of the luminous deep-sea squids, is known from the surrounding seas of Japan Proper, and it is fished in a large quantity in Toyama Bay during its spawning season, namely, April and May.
Although this squid has hitherto been unknown from Korean waters, the writer considers it to be abundant in the waters of the east coast of Korea according to the following facts:-
1) From June 1931 to December 1935, the writer found many pelagic eggs of a certain squid in the surface tows from the waters of the east coast of Korea. These eggs were iden-tified by the writer to be those of Watasenia scintillans, on the basis of the careful comparison with the ripe ovarian eggs of the species in question.
2) Adult female and male specimens of Watasenia scintillans were found in the stomachs of Scomber japonicus, and Alaska-Pollack, Theragra chalcogramm, which had been angled in the water of the same region.
It appears that the this squid spawns mostly from July to August mainly in the coastal waters of Keisyôhokudô and Kôgendô of Korea.抄録全体を表示PDF形式でダウンロード (284K) -
吉川 吉男, 小杉 嘉久雄1937 年 6 巻 2 号 p. 79-84
発行日: 1937/07/15
公開日: 2008/02/29
ジャーナル フリーThe mildewing is one of indispensable processes in manufacturing the dried cake of bonito and the like. The fungi of the group of Aspergilus glaucus, namely, Asp. repens, Asp. ruber, and Asp. scheeli, were found, when inoculated on the minced cakes of bonito, to be very active in decomposing the fatty substances in fish muscle and responsible for the production of good smell. Of these three, Asp. repens is best grown on the dried bonito while Asp. ruber worse and Asp. scheelei worst. The majority of fungi grown at first on dried bonito belongs to Asp. glaucus which does not appear at subsequent mildewing.抄録全体を表示PDF形式でダウンロード (502K) -
柳川 鐵之助1937 年 6 巻 2 号 p. 85-87
発行日: 1937/07/15
公開日: 2008/02/29
ジャーナル フリーThe sea weed, Gloiopeltis, is manufactured in Japan into agglutinating material. The writer chemically analyzed four kinds of the commercial preparations which had been done according to different methods. He also measured such physical properties as degree of lustre, relative viscosity, and adhesiveness of these materials.抄録全体を表示PDF形式でダウンロード (236K) -
青木 克1937 年 6 巻 2 号 p. 88-90
発行日: 1937/07/15
公開日: 2008/02/29
ジャーナル フリーThe viscosity of the substance in question was measured by the previously reported method with a view to determining the relations between it and physical, chemical, ecological agencies. The summer material was found to be the most viscous of all. The viscosity increased with the length and thickness of the fronds but decreased with their branching frequency.抄録全体を表示PDF形式でダウンロード (161K) -
殖田 三郎1937 年 6 巻 2 号 p. 91-104
発行日: 1937/07/15
公開日: 2008/02/29
ジャーナル フリーAlready in 1929, I(18) reported preliminarily on this subject, but at that time both experi-ments and observations were. not satisfactory, so that I have continued this study since 1934 at the suggestion of Dr. K. MIYAKE.
As regards the fate of the carpospores, DANGEARD (2) has reported that the carpospores of Porphyra germinate and develop to the protonema-like microscopic plantlets after they are liberated from the mother fronds.
After my observation, anyhow, I think it is not far from the truth to say that the car-pospores of Porphyra tenera KJELLM. germinate soon after the mother frond liberate them, because not only I could easily observe this germination with the fully riped carpospores in the laboratory, but also in nature on the twigs of dead trees or bamboos, which were planted in shallow waters for the culture of the alga, I could find out many germinated young plantlets in the later part of spring-that is the season, for the mother plants, to begin to decay. These plantlets do not grow large during the summer season, and they propagate with monospores repeatedly. The young fronds which germinate in autumn on the twigs of dead trees or bamboos yield monospores which are transformed from the ordinary vegetative cells; and thus multiplication of this alga is done. Thereafter, this plant develops normally, and gives rise to the frond of Porphyra in winter. These facts observed by myself in nature were quite certified also by the results of my experimental cultivations of the plantlets in the laboratory.抄録全体を表示PDF形式でダウンロード (3652K) -
山本 孝治1937 年 6 巻 2 号 p. 105-109
発行日: 1937/07/15
公開日: 2008/02/29
ジャーナル フリーSoon after spawning the eggs of the Japanese Killifish, Oryzias la ?? ipes (TEMMINCK & SCHLEGEL) and the Dutch-Lion-Head Goldfish, Carassius auratus (LINNAEUS) were kept at various constant temperatures. The time required for hatching and the percentage of the hatched fry were observed. To obtain a series of constant temperatures a SENO-TAUT??'s serial in ubator was made use of, in which 6 constant temperatures ranging from about 11° to 30°C. for the eggs of the Japanese Killifish and 10 constant temperatures ranging from about 12° to 31°C, for the eggs of The Dutch-Lion-Head Goldfish were maintained. The results obtained may be summarized as follows:
1) Water temperatures for normal development of the eggs range
for the Japanese Killifish 18° to 30°C.,
and for the Dutch-Lion-Head Goldfish 15° to 23°C.
2) The relation between the temperature (θ) and the time in days required for hatching (T) may be expressed as given by HIGURASHI and TAUTI by the formula Teaθ=C, where a and C are constants specific to the eggs of the respective kind. The values of these constants found in the present experiment and those of Q10 calculated from them are
for the Japanese Killifish a 0.0799, C 1.923 and Q10 2.22,
and for the Dutch-Lion-Head Gordfish a 0.0933, C, 1.523 and Q10 2.54.抄録全体を表示PDF形式でダウンロード (303K)
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