日本水産学会誌
Online ISSN : 1349-998X
Print ISSN : 0021-5392
ISSN-L : 0021-5392
2 巻, 2 号
選択された号の論文の6件中1~6を表示しています
  • Yukio GOTO
    1933 年 2 巻 2 号 p. 57-61
    発行日: 1933/07/15
    公開日: 2008/02/29
    ジャーナル フリー
    There are not so many studies of the bacteria which decompose the fish muscle. HUNTER(4) isolated from the decomposing salmon, Colon-cloaca group, Bact alkaligenes, Bact. formosum-like bacteria and pigment producing bacteria. HILDEBRANDT(6) isolated from the putrefying fish, aerobic, motile, partly spore forming bacteria, but not an anaerobic. BECKER(2) observed that the bacteria found in putrefying fish were aerobic gelatin-liquefying bacteria besides coccus, diprococcus, short or long rods. FELLERS(3) obtained cocci, sporulating aerobes, aerobic asporogenous chromatic rods, aerobic asporogenous achromogenic rods, yeasts, obligate anaerobes and spirlla from the decomposing salmon. HULPHER(6) isolated ten kinds of bacteria from putrefying fish and observed that these becteria were short oval, gram negative bacteria (partly gelatin liquefied) and micrococcus. HARRISON(5) found in decomposing fish muscle a number of Achromobacter which were probably marine bacteria (Micrococcus, Flavobacterium, Pseudomonas) with the ability to decompose the fish muscle. SCHÖNBERG(6) reported that the most encountered bacteria in the putrefying fish muscle were the rods, gram negative, slender, very active motile, gelatin liquefying and best flourishing at room temperature.
    Most of the authors above mentioned isolated the bacteria from the putrefying raw fish, the kinds of these being different according to their origins. The present paper embodies my observations on the bacteria found on fish fillets obtained from Tokyo fish market.
  • Hiroshi NIINO
    1933 年 2 巻 2 号 p. 62-64
    発行日: 1933/07/15
    公開日: 2008/02/29
    ジャーナル フリー
    Large blocks of nodules were dredged by the surveying ship Soyomaru at the station 221, 33° 20'30"N, 135° 50'00" E, about three miles off Muroto Peninsula, Prov. Tosa, at a depth of 209 meters and were put at my disposal through the kindness of the director of the Imperial Fisheries Experimental Station.
    On breaking one of these hard nodules, many fragments of fossil crab and mollusk were obtained. The specimens of fossil crabs consist of one carapace; right half of a body comprising carapace, abdomen, cheliped and an ambulatory leg; a fragment with an arm and first leg; two palms; and many fragments of ambulatory legs.
    They are undoubtedly referable to one species and capable of being described under the following one series of headings.
  • 鐡本 總吾
    1933 年 2 巻 2 号 p. 65-68
    発行日: 1933/07/15
    公開日: 2008/02/29
    ジャーナル フリー
    In the previous paper(2), I have reported the bactericidal activity of saturated monobasic fatty acids (C1-C10) on Staphylococcus pyogenes aureus, Proteus vulgaris HAUSER, Bacillus typhosus and Vibrio cholerae. The present paper deals with the bactericidal activity of saturated monobasic higher fatty acids (C11-C18) on the above-mentioned kinds of bacteria using the method described in the previous paper(1).
    The results obtained are summarized as follows:- (1) As regards the bactericidal activity of the saturated solutions of acids, from undecylic acid (C11) to stearic acid (C18), undecylic acid leads the list, and lauric acid comes next. The acids with C14-C18 have no bactericidal power, but even afford better conditions to microorganisms for sustaining life.
    (2) Hydrogen-ion, dissociated from acids, concerns little with the bactericidal action of these acids.
    (3) Anions of C11-C12 acids have bactericidal power to a certain measure.
    (4) Among Na-, Ca-and NH4-salts, the last one has the weakest bactericidal power.
    (5) Undissociated molecules have also remarkable effects on the bactericidal activites of undecylic and lauric acids.
  • キハダマグロ・カジキ・ブリ・ヒラマサ・アジに就いて
    木村 喜之助, 石井 一美
    1933 年 2 巻 2 号 p. 69-79
    発行日: 1933/07/15
    公開日: 2008/02/29
    ジャーナル フリー
    The greater majority of the fishes dealt with in this report are younger yellowtail and Japanese horse mackerel. The fishing seasons are taburated in the following lines.
    Yellowfin tuna, adult……………………Middle of June-middle of October., , , , , I-age group………………, , , , , , -end of September. Sword-fish………………………………June-October. (Histiophorus orientalis……………………Middle of July-October.) Yellowtail, adult…………………………End of May-end of June., , , II-age group……………………Middle of April-middle of May., , , I-age group……………………June-August., , , 0-age group……………………End of July-end. of October. “Hiramasa” (Seriola aureovittata)……………Beginning of April-beginning of June. Japanese horse mackerel……………………March-August.
    The following types are recognized in the catch according to the size of the catch and to the fishing grounds.
    (A) Larger catch at the mouth of this region of Suruga Bay but smaller toward the interior of it. i) Large on both north (Senbonhama) and south (Enasi) sides……Bluefin tuna, especially I-age young. ii) Large on the north but rather small on the south……Sword-fish (except Histiophorus orientalie) iii) Large on the north but very scarce on the south……Yellowtail and Histiophorus orientalis. (B) Large catch in the interior of the locality in question……Yellowfin tuna, Japanese horse mackerel and Seriola aureovittata.
    Remarkably enough, I-age bluefin tuna was obtained at Sigedera fishing ground in an enormous quantity in 1929 and 1932, whereas the size of the catch of the other fishes in the corresponding years at this ground was even smaller than that in other years. But the catch of bluefin tuna here was small in 1931 in contrast with large size of the catch of yellowfin tuna in the same year. At Sigedera fishing ground was noted a very large catch of Histiophorus ori…ntalis and I-age yellowtail in 1926 and 1930.
  • 安田 秀明
    1933 年 2 巻 2 号 p. 80-84
    発行日: 1933/07/15
    公開日: 2008/02/29
    ジャーナル フリー
    In the first experiment, several cords were put in a cage and held in water at a depth of 5-15cm. To set air bubbles free from the cords, the cage were agitated a little while at the beginning. The temperature of water ranged 6-8°C during the experiment. The amount of absorbed water was determined from the increase of weight of the cord, w, and from the decrease of buoyancy upon it. The diameter, 2r, was measured with a micrometer, and the ength under constant loading, l, with a scale.
    From the experiment we know that: (1) w-w0/w0, l0-l/l0 and r-r0/r0, where w0, l0 and r0 represent the initial values of w, l and r respectively, vary in a similar way with t, the duration of immersion of the cord in water (Figs. 1, 2 and 3); (2) The relation between w-w0/w0 and t follows the formula
    w-w0/w0=Q0'(1-e-a0t)+Q1'(1-e-a1t)+Q2'(1-e-a2t), Q0', Q1', Q2', α0, α1 and α2 being certain constants. Q0', Q1' and Q2' depend upon r0, but the ratio, Q0':Q1':Q2' is independent of r0 α0, α1 and α2 are proportional to r0-n, where n<1 for α0 and n=1 for α1 and α2 (Tab. 1, Figs. 4 and 5).
    In the second experiment, cords were immersed in coloured water and at intervals the coloured area was observed on a cross section of the cord. Thus we know that: (3) The colour-ing begins to take place on the surface layer of a cord and extends gradually toward the centre of it. The time T, in which the colouring reaches the centre of cord varies with r02 (Fig. 6).
  • 宇田 道隆
    1933 年 2 巻 2 号 p. 85-94
    発行日: 1933/07/15
    公開日: 2008/02/29
    ジャーナル フリー
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