巻号一覧
34 巻, 1 号
選択された号の論文の16件中1～16を表示しています
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本間 義治, 今 攸1968 年 34 巻 1 号 p. 1-5
発行日: 1968/01/25
公開日: 2008/02/29
ジャーナル フリーA detail of the outstanding papillomatous growth found in a young witch flounder, Glyptocephalus stelleri, was described macroscopically and microscopically. The specimen was caught from the offshore bottom of Wakasa Bay of the west coast of Honshu Island in the Japan Sea as a first record of this kind of growths in the Japanese flounders. Probable cause of this lesion was discussed from the view-point of viral infection.抄録全体を表示PDF形式でダウンロード (474K) -
小栗 幹郎1968 年 34 巻 1 号 p. 6-10
発行日: 1968/01/25
公開日: 2008/02/29
ジャーナル フリーUrinary constituents (Na, K, Ca, Mg, and sugar) and blood sugar were measured, using snake-head fish, Channa argus, and the following results were obtained.
1. Average levels of urinary Na, K, Ca, and Mg were 16.96, 2.75, 1.59, and 1.03 mEq/L, respectively.
2. A small amount of sugar (2.2-10.5mg%) was commonly detected in the urine of intact snake-head fish. Occasionally, greater amounts of sugar (17.8-54.5mg%) were found in the urine of these fish. The mean blood sugar level of 31 fish was 76.2±4.5mg%.
3. Treatment of alloxan (200mg/kg body weight) induced an increase in urinary sugar. Blood and urinary sugar levels were 53 to 154, and 17 to 281mg%, respectively.抄録全体を表示PDF形式でダウンロード (288K) -
小川 良徳1968 年 34 巻 1 号 p. 11-16
発行日: 1968/01/25
公開日: 2008/02/29
ジャーナル フリーIn order to examine gross-anatomical changes of the brain components of horse mackerel in accordance with their body-growth, and observation was made on the specimens which ranged from 15mm to 380mm in total length.
The main results obtained are summarized as follows:
1. Most remarkable changes are observed at the following three stages.
(a) The first stage: At the stage less than 40mm in total length, lobus opticus is exclusively large, but other parts of the brain are not so developed. However, development of both corpus cerebelli and crista cerebelli becomes distinct at the stage over 40mm in total length.
(b) The second stage: In the specimens ranged from 80-100mm in total length, each part of the cerebellum, begins to show their characteristic features; especially, valvula cerebelli develops and lobus inferior enlarges.
(c) The third stage: In the specimens of 140mm in total length, every part of telencephalon shows adult type.
2. The results above mentioned suggest that, in horse mackerel, there exists and intimate correlation between the behavioural modification and the morphological changes of some brain components, especially of the lobus opticus, cerebellum and telencephalon.抄録全体を表示PDF形式でダウンロード (371K) -
里見 雅子, 有賀 祐勝, 岩本 康三1968 年 34 巻 1 号 p. 17-22
発行日: 1968/01/25
公開日: 2008/02/29
ジャーナル フリーThe seasonal change in photosynthetic ability of Porphyra yezoensis grown in the culture grounds was studied at Nagai and Shiba, Kanagawa Pref., by following the development of the community on a sheet of culture net. At Nagai measurements were made on the same day under changing natural conditions in the field and under constant conditions in the laboratory.
The photosynthetic ability of P. yezoensis was initially low, attained the maximum rate of 30-35 02ml/g d.w./hr at about 40 days after seeding of conchospores, and then continuously decreased to about half of the maximum rate in 3 months after seeding. This trend of change with aging seems to be general regardless of differences in environmental conditions if the Porphyra community undergoes a healthy development.
Since the similar trends of the decline in photosynthetic activity were obtained under the field and laboratory conditions and the significant differences in the photosynthetic and respiratory activities were found between the older and the younger fronds grown under the same field conditions, it is concluded that the seasonal change in photosynthesis of P. yezoensis in the culture ground is primarily attributed to the aging of the algal community rather than the water temperature even though there is a highly significant correlation between photosynthesis of the alga and water temperature in the field through the seasons.抄録全体を表示PDF形式でダウンロード (382K) -
松田 皎, 川上 太左英1968 年 34 巻 1 号 p. 23-28
発行日: 1968/01/25
公開日: 2008/02/29
ジャーナル フリーPDF形式でダウンロード (274K) -
狩谷 貞二, 白旗 総一郎, 中村 恵江1968 年 34 巻 1 号 p. 29-35
発行日: 1968/01/25
公開日: 2008/02/29
ジャーナル フリーPDF形式でダウンロード (407K) -
大型成魚の成熟,集合および卵の分布について平本 紀久雄1968 年 34 巻 1 号 p. 36-43
発行日: 1968/01/25
公開日: 2008/02/29
ジャーナル フリーThe waters off the Boso Peninsula are one of the most important fishing grounds for the adult Japanese anchovy, Engraulis japonica (HOUTTUYN). They occur in the area during winter and spring, and are caught chiefly by two-boat purse seiners. The adult stock comprises two age groups, small sized adults of about 1-year-old and the large-sized ones of baout 2-yea-old.
The author examined maturation and aggregation of the large-sized adults, and distribution of the eggs taken off the Peninsula during winter through summer in 1965 and 1966. The results are summarized as follows.
1) The large-sized adult stock was much larger in 1965 than 1966.
2) The stock in both years comprised three subgroups. The first subgroup was exploited only in December. The latter two subgroups appeared in December through April, and in April through July, respectively. The last subgroup remarkably dominated in the 1965-66 fishing season.
3) The fishing season was diveded into three phases; premature (up to eatly March), maturing (middle March through early May), and ripening (middle May through late July). As the diameter of ova of the largest group reached almost their maximum size in the maturing and ripening phases, spawning of these anchovy was considered to be extended from middle March through late July.
4) In 1965-66 season, the large-sized adults of pre-mature phase first appeared in the waters off Zyoban and the Boso Peninsula, and gradually moved southward, reaching as far as the Suruga Bay. In maturing phase, density of the fish decreased and the centre of distribution located in the Suruga Bay. In ripening phase, the fish moved northward, and the centre of distribution appeared again in the waters around the Boso Peninsula.
5) Along the Pacific coast of Honsy ?? first the anchovy eggs occurred in the waters around the Boso Peninsula in winter, and then the distribution area extended westward, corresponding to the shift of the distribution of large-sized adults. This fact indicates that the large-sized adults are main producer of the eggs found in the waters around the Boso Peninsula.抄録全体を表示PDF形式でダウンロード (587K) -
サヨリ仔漁の腸管後部の上皮細包について岩井 保, 田中 克1968 年 34 巻 1 号 p. 44-48
発行日: 1968/01/25
公開日: 2008/02/29
ジャーナル フリーPeculiar columnar cells with acidophilic granules are found to occur in the posterior gut epithelium of well-fed larvae of the halfbeak. By electron microscopy, the granules are identifiable as vacuoles containing less dense materials which are formed by pinocytosis. The posterior gut epithelium marked by such peculiar cells may be implicated in absorption, probably ingestion of protein.抄録全体を表示PDF形式でダウンロード (1339K) -
加藤 増夫, 野中 茂樹1968 年 34 巻 1 号 p. 49-58
発行日: 1968/01/25
公開日: 2008/02/29
ジャーナル フリーDuring 6th July through 12th September, 1966, actual trawlings using Net recorder were carried out by a large sized trawl boat in the fishery near Aleutian Islands and in the southern fishery of Alaska Peninsula in the Northern Pacific Ocean.
The following results which will be useful for bottom trawlings were concluded by comparing the recordings obtained by Net recorder showing the fish school having entered the net with the haul of fish correspond to the recordings. It is noted, however, that a large net (height of net mouth: 5-6m, width of it: 30m) was employed and that operations referred to in this survey are limited to those in depth of 150 to 320 meters.
1) It is presumed that the integrated area of fish traces obtained by Net recorder showing fish school entering the net is approximately proportional in linearity to the haul of fish correspond to the area. This means that Net recorder enables us to determine the towing time required by examining the recordings obtained by Net recorder.
2) It is presumed that when both rockfishes and Alaska pollack are 30 to 44cm in total length (Alaska pollack is in its youth), fish school of Alaska pollack is two times as dense as that of rockfishes.
3) Generally, rockfishes and Alaska pollack on the recordings obtained by Net recorder are distinguished, i.e. rockfishes draws lengthways sharp traces almost touching the oscillation line, while, Alaska pollack draws densely sideways semicircular traces on the bottom line.抄録全体を表示PDF形式でダウンロード (2214K) -
アサクサノリのヌクレオチドについて大山 重信, 小林 邦男, 富山 哲夫1968 年 34 巻 1 号 p. 59-64
発行日: 1968/01/25
公開日: 2008/02/29
ジャーナル フリーA marine red alga, Porphyra tenera is one of the most important algae in Japan, and little has been known about its biochemical aspects.
The present paper deals with the separation and identification of the nucleotides and their contents in the alga. The fresh sample laver was frozen and ground under liquid nitrogen. The nucleotide fraction was extracted from the ground laver with PCA, and separated by means of an activated charcoal, followed by fractionation by ion exchange chromatography, Dowex 1, Cl form being employed.
The following nucleoside and nucleotides have been identified; Inosine, UMP, AMP, ADP, IMP, UDP, UDP-sugar, ATP, IDP, GTP and IDP-sugar ? or IDP-sugar-like substance. The sum of the contents of these identified was 0.69μmole/g•fresh. The contents of ATP, 0.21μmole/g•fresh, was the highest in all nucleotides and the next was ADP.抄録全体を表示PDF形式でダウンロード (385K) -
緑色色素の吸収スペクトルの性質小泉 千秋, 松浦 文雄1968 年 34 巻 1 号 p. 65-71
発行日: 1968/01/25
公開日: 2008/02/29
ジャーナル フリーThe optimum conditions under which the intensely green precipitate formed on heating from the model system consisting of MMb, TMAO, and cysteine were examined. The green precipitate obtained under the optimum conditions was dissolved in 1% aqueous SDS and subjected to measurement of absorption spectrum. The characteristics of the spectrum may be summarized as follows:
1. On reduction with sodium hydrosulfite, a weak absorption maximum appears at 600-605 mμ.
2. The maximum is sharpened but not shifted by treatment with sodium hydrosulfite and carbon monoxide.
3. On addition of both sodium hydrosulfite and nicotinamide, two weak maxima appear at 550 and 520 mμ as in the case of hemochrome and a maximum at 600-605 mμ disappears.抄録全体を表示PDF形式でダウンロード (399K) -
低張溶菌におよぼす無機塩の影響日高 富男, 柿本 大壱1968 年 34 巻 1 号 p. 72-77
発行日: 1968/01/25
公開日: 2008/02/29
ジャーナル フリーPDF形式でダウンロード (401K) -
Omission testによる有効物質の検索橋本 芳郎, 鴻巣 章二, 伏谷 伸宏, 能勢 健嗣1968 年 34 巻 1 号 p. 78-83
発行日: 1968/01/25
公開日: 2008/02/29
ジャーナル フリーFrom our observation that the extracts of short-necked clam, Tapes japonica, evoke exploratory and feeding response in eels, Anguilla japonica, attempts were made to locate the active components.
Various kinds of test solution were prepared by mixing the authentic reagents so as to reproduce partly or wholly the natural extracts (Table 1) and examined on their activity.
As shown in Table 2, amino acids are responsible for the activity, while the other constituents, such as nucleotides, their related compounds, organic acids and quaternary ammonium bases, make little contribution, if any. When tested individually, each of 18 amino acids, however, is not effective at the concentration tested. These results suggest that the stimulating activity of the extracts is attributable mainly to the synergistic or additive interaction between amino acids.
Eels, which had been kept respectively on the beef liver, aquatic oligochaete worms, Tubifex spp., and frozen saury for 4 weeks, did not show any difference in response to test solutions.抄録全体を表示PDF形式でダウンロード (356K) -
天然エキスの分画による有効物質の検索鴻巣 章二, 伏谷 伸宏, 能勢 健嗣, 橋本 芳郎1968 年 34 巻 1 号 p. 84-87
発行日: 1968/01/25
公開日: 2008/02/29
ジャーナル フリーSucceeding to the previous study, in which attractants for eels, Anguilla japonica, were surveyed by the omission test using synthetic extracts, the present investigation was conducted to locate stimulating constituents by a stepwise fractionation of the natural extracts.
(1) The aqueous ethanolic extracts of the soft part of short-necked clam, Tapes japonica, were defatted with ether without any decrease in activity. The extracts were then fractionated into basic, acidic and neutral fractions by passing columns of Dowex 50W (H+) and Dowex 2 (OH-) resins successively. Among them, only the basic fraction was found to be effective (Table 1).
(2) The basic fraction was further divided into two, strongly and weakly basic fractions, with a column of Dowex 50W (NH4+) resin. As shown in Table 2, the non-adsorbed, weakly basic fraction was active, while the other not.
(3) The weakly basic fraction was then fractionated by paper chromatography or chromatopile. As shown in Table 4, stimulating components were concentrated mostly in a fraction ranging from Rf 0.3 to 0.6.
(4) Amino acid analysis of the above active fraction revealed the presence of seven amino acids (Table 5). A mixture of the authentic reagents of these amino acids was confirmed to be stimulating to eels, although weaker than the original extracts.抄録全体を表示PDF形式でダウンロード (242K) -
Vibrio gerrisの有機酸生成作用について奥谷 康一, 来田 秀雄1968 年 34 巻 1 号 p. 88-92
発行日: 1968/01/25
公開日: 2008/02/29
ジャーナル フリーIn the previous paper1), OKUTANI studied on the formation of acids from several kinds of sugars by chitin-decomposing bacteria isolated form the digestive tracts of fish.
It seems important to identify and determine those acids in order to discuss about the function of those symbiotic bacteria in the digestive tracts of fish.
The present study was carried out to clarify the formation of organic acids in growing cultures of Vibrio gerris.
The results obtained were as follows:
1) Organic acids accumulated in the culture were butyric, acetic, pyruvic, formic, lactic, glycolic and an unidentified organic acids (Figs. 1 and 3). Among them, acetic and lactic acids were found in high concentrations (Fig. 2).
2) When the media were added with 0.2% chitin or, and 1.0% glucose, both amounts of acetic and lactic acids increased remarkably as compared with those of other acids (Figs. 1 and 2).
3) When the media were added with 0.5% sodium acetate and lactate, there were no sensible effect on the growth, but chitinolytic activity of bacteria (Specific activity) decreased by the addition of acetate (Table 3).抄録全体を表示PDF形式でダウンロード (276K) -
1968 年 34 巻 1 号 p. 96
発行日: 1968年
公開日: 2008/04/22
ジャーナル フリーPDF形式でダウンロード (52K)
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