All issues
Volume 8 (1939 - 1940･･･
- Issue 6 Pages 267-
- Issue 5 Pages 213-
- Issue 4 Pages 169-
- Issue 3 Pages 115-
- Issue 2 Pages 57-
- Issue 1 Pages 1-
Volume 8, Issue 2
Displaying 1-10 of 10 articles from this issue
- |<
- <
- 1
- >
- >|
-
Ituo IUBO1939 Volume 8 Issue 2 Pages 57-59
Published: July 15, 1939
Released on J-STAGE: February 29, 2008
JOURNAL FREE ACCESSAn ovigerous female obtained in August, 1938 from Gelidium-bed near Huruye, Kitaura-mura, Miyazaki Prefecture, at a depth of 7 fathoms was kindly placed at my disposal through the courtesy of Mr. Takio YOKOTA. It proved to represent a new genus and species which I propose to call Pinnotheropsis yokotai.
The writer must express his sincere thanks to Professor A. TERAO for his kind supervision. He is much obliged to Mr. T. YOKOTA for the favour of the valuable specimen.View full abstractDownload PDF (145K) -
Morisaburô TAUTI, Kiyohide MIYOSI1939 Volume 8 Issue 2 Pages 60-68
Published: July 15, 1939
Released on J-STAGE: February 29, 2008
JOURNAL FREE ACCESSBased on the statistics giving the yearly catches of “Iwasi” (sardine), “Ika” (squids), and “Tara” (codfish) from several districts of Northern Japan, the relations among the catches at different districts and those among the catches and the oceanographical factors were investigated.View full abstractDownload PDF (666K) -
Eiiti KUROKI1939 Volume 8 Issue 2 Pages 69-72
Published: July 15, 1939
Released on J-STAGE: February 29, 2008
JOURNAL FREE ACCESSInvestigations on the age-composition, body length l, weight w and depth, and the quality indicator, 1000 w/l8, of carps and of crucians from the three lakes mentioned in the title lead to the conclnsions: -
(1) That all carps experimented were two years old and in their growth rate, lake Kizaki, being of eutrophyc type, was superior to the other two.
(2) The age composition of crucians was normal in lake Kizaki, but abnormal in the other lakes. Such abnormality seems to have bearings on the variation in catch and in the number of snowy days during the year when each year class was hatched. Dimensions of the body were poor in lake Nakatuna, while the quality indicator was low in the oligotrophyc lake Aoki.View full abstractDownload PDF (401K) -
I. Red Salmon (Oncorhynchus nerka (WALB.))Rokuzi SATÔ1939 Volume 8 Issue 2 Pages 73-75
Published: July 15, 1939
Released on J-STAGE: February 29, 2008
JOURNAL FREE ACCESSIn the far offing to the east of Kamchatka Peninsula, almost all the red salmon to be caught in drift nets of 14cm. meshes are returning to their mother stream in the same year. These fishes, of the returning age migrate from the southern side of Attu Island of Alleusian Archiperago, via the southern part of the Commandorskie Is., comming down the east coast of the Kamchatka P., to the west coast of it near Ozernaya. During the period of this migration, which takes about 40 to 60 days, the gonad of the fish of 4 years as well as 5 years old increases its weight 2 times for ovary, while for testis 3 times.View full abstractDownload PDF (208K) -
Syôzi TANI1939 Volume 8 Issue 2 Pages 76-78
Published: July 15, 1939
Released on J-STAGE: February 29, 2008
JOURNAL FREE ACCESSCylindrical glass vessels similarly shaped as 1. lb tall cans were filled up with water and heated in a water bath at constant temperatures. Convection currents and the temperature distribution within the cylinder were observed at frequent intervals during beating.View full abstractDownload PDF (190K) -
III. The Type of the Figure and the Rate of Decrease in the Vacuity of Salmon CansKenzi MITUHASI, Tomozirô OGAWA1939 Volume 8 Issue 2 Pages 79-80
Published: July 15, 1939
Released on J-STAGE: February 29, 2008
JOURNAL FREE ACCESSVibration figures developed on the flat surface of aluminium powder covering the upper end of cans, as investigated previously by A. HASEBE, seem to have it certain correlation with the rate of decrease in vacuity during storage of the salmon cans.View full abstractDownload PDF (373K) -
Tomozirô OGAWA1939 Volume 8 Issue 2 Pages 81-83
Published: July 15, 1939
Released on J-STAGE: February 29, 2008
JOURNAL FREE ACCESSVariation in the thermal conductivity of cod (Gaclus macrocephalus TILESIUS), tunny (Thunnus orientnlis (T. & S.)) and salmon (Oncorhynchus masou (BREVOORT)) due to the freezing was observed by the similar method as in the previous study. With the temperature, -θ°C, beneath the freezing point, -θc°C, the thermal conductivity, k, varies as
k=K-βθC/θ=k0+β(1-θC/θ0), K=k0+β,
where k0 is the conductivity at -θC°C or that of unfrozen fish, which is nearly constant irrespective of temperature. The constant β seems to increase as k0 for the five kinds of fishes hitherto experimented. The asymptotic value of conductivity, K, thus, varies more vigorously than k0. Both constants vary considerably among the specimens even of the same kind of fish.View full abstractDownload PDF (193K) -
Yonesaku NAGATA1939 Volume 8 Issue 2 Pages 84-96
Published: July 15, 1939
Released on J-STAGE: February 29, 2008
JOURNAL FREE ACCESSThe germination of spores of Penicillium sp. was found suppressed when kept in mixtures of CO2, (26-76%) with air. Such mixture proved effective in preserving dried herring fillet and smoked herring for about four months when kept dry. Even addition of 70% moisture to the gas mixtures suspended moulding for 15 days at 23°-28°C on sardin fish-meal, flocky meal, and sardin fish-meal mixed with 1•2-8•8% NaCl.View full abstractDownload PDF (774K) -
Saburô WAKAMATSU1939 Volume 8 Issue 2 Pages 97-101
Published: July 15, 1939
Released on J-STAGE: February 29, 2008
JOURNAL FREE ACCESSEinige Reihe der Rattenfütterungsversuches, in denen das Rinder-, das Herings- und das Sardinefleisch, sowohl in der getrockneten, auch in den gekochten und kouservierten Zustände, als das Futter gebraucht wurden, zeigten daß das Fischfleisch einen vergleichlichen, oder, beim festgehaltenen Kalorienwert des Futters, einen vorzüglicheren Nährwert hat, als das Rinderfleisch. Beim festgehaltenen Jodgehalt, den man durch Zufügung der Jodkaliumlösung oder des Seegrasmehles (Ka ?? ime) erfüllt hat, weisten die Futter aus verschiedenen Fleischarten beinahe dieselben Nahrungsfähigkeit auf.View full abstractDownload PDF (305K) -
Takaharu YAMAMOTO1939 Volume 8 Issue 2 Pages 102-106
Published: July 15, 1939
Released on J-STAGE: February 29, 2008
JOURNAL FREE ACCESSThe present experiments were carried out to ascertain the optimum temperature and the optimum salinity of the sea water for the embryonal development of the eggs of Pseudopleuronectes yokohamae (GÜNTHER). (1) For the influence of temperature, the artificially fertilized eggs were kept at ten constant temperatures ranging from about 4° to 21°C. The time required for hatching and the percentages of the hatched fry were observed. (2) For the influence of salinity, the eggs were kept at six constant salinities ranging from 14•34 to 49•70‰, and at 10•1°C on an average. The percentages of the hatched fry were observed.
The results obtained may be summarized as follows: -
1. Water temperature for normal development of the eggs ranges from 6° to 16°C., the optimum being about 9°C.
2. Favorable salinity for normal development of the eggs ranges from 20•90 to 40•11‰.
3. The relation between the temperature (θ) and time in days required for hatching (T) may be expressed, as given by HIGUBASHI and TAUTI, by the formula Teeθ=C, where a and C are constants specific to the kind of eggs. The values of these constants found in the present experiment and that of Q10 calculated therefrom are, a=0•117, C=1•524 and Q10=3•21.
4. The product of temperature and time in days required for hatching increases with temperature at lower temperatures but decreases at higher, and thus it gives the maximum value at 8•5°C.
5. The percentage of deformity of the hatched fry varies inversely with the hatch rate in relation to temperature; and nearly half of the deformed fry were of the form of downward bending.
6. In the relation between the salinity variation and the time in days required for hatching no appreciable difference was observed.View full abstractDownload PDF (393K)
- |<
- <
- 1
- >
- >|