巻号一覧
38 巻, 7 号
選択された号の論文の19件中1～19を表示しています
- |<
- <
- 1
- >
- >|
-
放流直後の行動門間 春博1972 年 38 巻 7 号 p. 671-676
発行日: 1972/07/25
公開日: 2008/02/29
ジャーナル フリーLocomotion and settlement of the seed disc abalone produced artificially has been observed under water in order to know their behavior immediately after releasing them into the fishing ground.
1) Most of disc abalones released into the water fell on their backs to the bottom, then turned over and moved to their temporary habitats within one hour, both in the tank and in the fishing ground.
2) The abalones on their backs were attacked by carnivorous animals in the fishing ground.
3) Protecting seed disc abalones from such carnivorous animals was accomplished by keeping them lodged on oyster shells in a wire basket.
4) A large percentage of the injured seed disc abalones were killed by carnivorous animals such as small gastropods, crabs, star-fishes and fishes.抄録全体を表示PDF形式でダウンロード (375K) -
アユおよびニジマスにおける飼料効果袈裟丸 倉基, 前 正紀, 福田 博業1972 年 38 巻 7 号 p. 677-683
発行日: 1972/07/25
公開日: 2008/02/29
ジャーナル フリーIn the previous papers 1-4), the authors pointed out the excellent nutritive values of wheat germ as diet for carp, Cyprinus carpio.
The present paper deals with the nutritive values of a formulated diet with wheat germ and white fish meal for young ayu, Plecoglossus altivelis and young rainbow trout, Salmo gairdneri f. irideus.
The procedures for the feeding experiments were essentially identical with those of the carp.
Results of the feeding experiments showed that both defatted wheat germ and white fish meal improved the nutritive values when used as a mixed diet as compared to being used singly for young ayu and rainbow trout as in the case of carp.
It was shown that the most excellent nutritive values were obtained at the mixing ratio of 50:50 for ayu and 25:75 for rainbow trout and the protein concentrations of the diets were nearly 50 and 60 percent respectively.抄録全体を表示PDF形式でダウンロード (407K) -
前田 辰昭1972 年 38 巻 7 号 p. 685-691
発行日: 1972/07/25
公開日: 2008/02/29
ジャーナル フリーSince 1969 the fishing conditions of Alaska pollack, Theragra chalcogramma (PALLAS), had begun to show symptoms of decrease in the catch, a situation that had not appeared by that time on the trawling grounds in the eastern Bering Sea.
In order to find the clue to the above cause, the author carried out research on the length composition, catch per unit of fishing effort of Alaska Pollack and the oceanographic conditions of the sea bottom and the findings are as presented in this paper.
The results obtained are summarized as follows:
1. The length composition of Alaska pollack showed increased percentage of fish larger than 40cm in fork length due to the selective catching of larger sized fish from 1963 to 1966, a time when the catches were meager. Since then the percentage of fish larger than 40cm decreased year by year from 1967 to 1970 when total catches were actually greater.
2. The C. P. U. E. of Alaska pollack increased year by year from 1963 to 1968 with the rise in the unit of fishing effort, but began to slacken in 1969 and then decrease in 1970 in spite of the rise in the unit of fishing effort.
3. The water temperature was rated high in 1969, and low in 1970. But the C. P. U. E. of Alaska pollack in 1970 was less than that in 1969.
4. Estimating the results from length composition, the C. P. U. E. and the oceanographic conditions, the stock of Alaska pollack may have begun to symptoms of decrease in 1970.抄録全体を表示PDF形式でダウンロード (491K) -
癌腫病罹病ノリのDNAについて加藤 盛, 渡辺 競1972 年 38 巻 7 号 p. 693-697
発行日: 1972/07/25
公開日: 2008/02/29
ジャーナル フリーThe abnormal cell division in cancered Porphyra tissue was studied in respect to its DNA. The results obtained are as follows:
1) Base composition of DNA in Porphyra cells was characterized by a high content of guanine and cytosine, thus representing the DNA of G-C type.
2) Base composition, melting temperature and buoyant density of cancered and healthy cell DNA were not significantly different. These results suggest that the abnormal cell division in cancered Porphyra may not be caused by structural changes of DNA.
3) When the DNA content in the tissue was expressed on a dry weight basis, it was greater in the cancered tissue than the healthy tissue. On the other hand, microspectrophotometric analysis of cancered single cells revealed that the ultra-violet extinction at 260mμ did not differ from that of healthy cells. Probably, the increase of DNA content in the cancered tissue might be due to increase in the number of cells per dry weight.抄録全体を表示PDF形式でダウンロード (326K) -
沼知 健一, 松宮 義晴, 佐藤 良三1972 年 38 巻 7 号 p. 699-706
発行日: 1972/07/25
公開日: 2008/02/29
ジャーナル フリーSupernatant malate dehydrogenase (S-MDH) isozymes of chum salmon and rainbow trout were examined by starch gel electrophoresis. Three types of B-subunit isozyme patterns were demonstrated for 396 specimens of chum salmon captured in nine rivers, and four types for 420 of rainbow trout from six hatcheries. On the bases of the occurrence of three isozymes at distinctly asymmetrical ratios in heterozygote variants and the frequencies of phenotypes in the populations examined, it was suggested that each of these two species possesses duplicate genetic loci producing dimeric isozymes, which are composed of subunits B' and B in rainbow trout, and B and B" in chum salmon, under the control of corresponding alleles. The gene frequencies of B allele in the rainbow trout populations and the frequency of B" allele in the chum salmon populations were respectively .103 and .056 at most: 65 to 95 percent of rainbow trout exhibited a single isozyme consisting of B' subunit, and more than 82 percent of chum salmon exhibited one consisting of B subunit. The demonstration of duplicate loci for B-subunit isozyme of S-MDH in both species provides additional support for the tetraploidy hypothesis of salmonids.抄録全体を表示PDF形式でダウンロード (454K) -
宋 大鎮, 磯貝 宰1972 年 38 巻 7 号 p. 707-710
発行日: 1972/07/25
公開日: 2008/02/29
ジャーナル フリーThe effect of platen temperature on the characteristics of lyophilized and subsequently powdered Wakame-Mekabu, sporophyll of Undaria pinnatifida, was examined. The kelps were frozen by vacuum freezing and subsequently freeze-dried at various platen temperatures of 60°C, 40°C, and 20°C. These lyophilized powders were compared with the sun-dried powders with respect to viscosity, thread forming property, chlorophyll content, and visual assessment of colour.
The results are summarized as follows:
1) Though the effect of platen temperatures on the viscosity of the lyophilized material was small, the lower the temperature the higher was the viscosity of the sporophyll. For the wing, however, the situation was reversed.
2) Till one month storage the thread forming property of wing was larger at the lower platen temperatures, but the difference became less. After two months storage all the samples showed an increase in the property of thread forming.
3) Chlorophyll retention was better with lyophilization at higher temperatures, but visual assessment of colour gave contrary results.抄録全体を表示PDF形式でダウンロード (233K) -
渡辺 悦生, 安藤 一夫1972 年 38 巻 7 号 p. 711-715
発行日: 1972/07/25
公開日: 2008/02/29
ジャーナル フリーCholesterol in the free and esterified forms and the esterforming fatty acids were studied in the rainbow trout egg during its development.
In the fertilized egg, free cholesterol decreased slightly while the esterified form increased, there being a slight decrease in the sum of these two.
Until eyeing stage some of the ester-forming fatty acids increased while others decreased, the former being C16:1, C18:0, C18:1, and C18:4+C20:1, the latter being C12:0, C14:0, C16:0 and C18:2. Almost all the fatty acids were maximal after the hatching stage.
Unfertilized egg which was kept alive for 24 days under the same conditions as the fertilized showed a remarkable increase in lower fatty acids (less than 12 carbon atoms) during this period.
These observations may suggest that cholesterol plays an important role in fat metabolism in the developing egg.抄録全体を表示PDF形式でダウンロード (817K) -
海水由来分離菌株からの検出および結晶生成に関与する細菌の主要形態学的性状による群別信濃 晴雄1972 年 38 巻 7 号 p. 717-725
発行日: 1972/07/25
公開日: 2008/02/29
ジャーナル フリーIn the previous paper, the author described that artificial sea water resembling natural sea water, such as LYMAN and FLEMING's sea water, should be used to detect the marine microorganisms taking part in the precipitation of calcium carbonate in media prepared with artificial sea water. The present study deals with the detection and grouping of the bacteria taking part in the precipitation of calcium carbonate.
The results obtained are summarized as follows:
1. As for the microorganisms taking part in the precipitation of calcium carbonate, 653 strains of bacteria and 32 strains of yeast were detected out of 3517 strains of microorganisms isolated from various sea areas, i.e. the North Pacific, mainly the Okhotsk Sea and the Bering Sea, the area south of the islands proper to Japan and the East China Sea, the southwest part of Sumatra and the Indian Ocean.
2. Six hundred and fifty-three strains of bacteria taking part in the precipitation of calcium carbonate were divided into four groups, i.e. cocci, monopolar gram-negative rods, peritrichous gram-negative rods, non-motile gram-negative rods, on the basis of main morphological characteristics.抄録全体を表示PDF形式でダウンロード (167K) -
炭酸カルシウムの沈積に関与する海洋細菌の分類学的検討 (1)信濃 晴雄1972 年 38 巻 7 号 p. 727-732
発行日: 1972/07/25
公開日: 2008/02/29
ジャーナル フリーAs described in a previous paper, marine microorganisms taking part in the precipitation of calcium carbonate were divided into four groups on the basis of main morphological characteristics.
Various methods of taxonomy for gram positive, catalase positive and aerobic cocci have been proposed by many workers since Cohn established the genus Micrococcus in 1872. In this paper, a taxonomic investigation concerning 16 strains of cocci was made according to the method of Bergey's Manual of Determinative Bacteriology (7 ed.).
The results obtained are summarized as follows:
1. All the strains of cocci belonged to the genus Micrococcus by the cell arrangement and form of sugar metabolism.
2. Sixteen strains of cocci were identified as species of Micrococcus rubens (5 strains), M. conglomeratus (5 strains), M. roseus (2 strains), M. flavus (2 strains) or M. freudenreichii (2 strains) respectively.抄録全体を表示PDF形式でダウンロード (386K) -
矢野 勲1972 年 38 巻 7 号 p. 733-739
発行日: 1972/07/25
公開日: 2008/02/29
ジャーナル フリーThe exocuticle and associated epidermal cells in a shore crab, Gaetice depressus, were studied in relation to the calcification of the exoskeleton. In the completed exoskeleton, the upper part of the exocuticle is heavily calcified showing a marked contrast with the lower weakly calcified part. Differences of some histochemical nature were detected between these two parts. Throughout the molting cycle, the upper calcifying part of the exocuticle was shown to be strongly metachromatic with toluidine blue and strongly positive to alcian blue, while the lower less-calcifying part was faintly metachromatic and less positive to alcian blue. The epidermal cells in the premolt stage D3-D4 and postmolt stage A1-A2 were very faintly positive by the von Kossa stain, but they showed an intensely positive reaction in the postmolt stage B1-C3 and the intermolt stage C4.抄録全体を表示PDF形式でダウンロード (527K) -
鍵前躯体としてのメバロン酸のin vitro試験鹿山 光, 島田 英明1972 年 38 巻 7 号 p. 741-751
発行日: 1972/07/25
公開日: 2008/02/29
ジャーナル フリーThe biosynthesis of squalene and cholesterol from acetate-1-14C by the homogenate supernatant of carp hepatopancreas and from mevalonate-2-14C by that of rainbow trout liver was studied in vitro. The incubation was carried out with the addition of ATP, NAD, NADH, NADP and NADPH for four hours in the carp hepatopancreas preparation with acetate, and for two hours in the rainbow trout liver preparation with mevalonate under aerobic and anaerobic conditions at 30°C.
The total radioactivities incorporated into the lipids of carp hepatopancreas preparations were less than 5% of the initial acetate, in which most of the label was found in the saponifiable fraction, whereas in the nonsaponifiable fraction the percentage radioactivities were not over 10%. Therefore, the net acetate incorporation into squalene and cholesterol does not exceed 0.5%. However, it was shown that the mevalonate incorporation by the rainbow trout liver preparation into such compounds was almost quantitative, if only one enantiomorph of DL-mevalonate were utilized on the pathway of cholesterogenesis.
In general, the coenzyme requirements for cholesterol synthesis in the fish are not markedly different from those needed by land animals. As one of the cofactors required for the cyclization of squalene to lanosterol, molecular oxygen plays an important role as in the case of aerobic conditions.
Moreover, the metabolic pathway from acetate or mevalonate via squalene to cholesterol and their relations as the precursor, intermediate and product are discussed.抄録全体を表示PDF形式でダウンロード (1239K) -
新井 茂, 能勢 健嗣, 橋本 芳郎1972 年 38 巻 7 号 p. 753-759
発行日: 1972/07/25
公開日: 2008/02/29
ジャーナル フリーEssential amino acids for the 2 species of eel, A. anguilla and A. japonica, were examined by using an amino acid test diet. Forty fish were grouped in each aquarium and fed the test diets for a period of 6 weeks. In the both species, the fish fed diets deficient in each of alanine, aspartic acid, cystine, glutamic acid, glycine, proline, and tyrosine grew as well as those fed the complete amino acid diet. The fish fed diets deficient in each of arginine, histidine, isoleucine, leucine, lysine. methionine, phenylalanine, threonine, tryptophan, and valine failed to grow until the deleted amino acid was added to the ration. It was thus established that eels require the same 10 kinds of amino acid reported to be essential for salmonids and others.抄録全体を表示PDF形式でダウンロード (349K) -
遠藤 俊夫, 荻島 健次, 田中 久, 大島 慧1972 年 38 巻 7 号 p. 761-767
発行日: 1972/07/25
公開日: 2008/02/29
ジャーナル フリーEugenol (4-allyl-2-methoxyphenol) was found to exhibit an anesthetic effect on various fishes.
Carp, Cyprinus carpio, medaka, Oryzias latipes, crucian carp, Carassius auratus and rainbow trout, Salmo gairdnerii irideus were anesthetized in a short time in water containing 12.5 to 100 ppm of eugenol as added to water in the form of FA-100 (a pharmaceutical preparation of 10% eugenol). Eugenol was effective at only one fourth the concentration of MS-222 that would give comparable effects in gold fish, Carassius auratus, medaka and crucian carp. Anesthesia by FA-100 and recovery from it required longer time at low water temperatures (5 and 10°C) than at normal temperature (24.5°C).抄録全体を表示PDF形式でダウンロード (399K) -
弾力の熱力学的成分におよぼすでんぷん含量の影響高木 一郎, 清水 亘1972 年 38 巻 7 号 p. 769-772
発行日: 1972/07/25
公開日: 2008/02/29
ジャーナル フリーTwo thermodynamical components of the elastic force and their occupying ratios were determined for kamaboko containing starch.
It was shown that with increasing starch content the entropy force component decreases while the energy force component increases proportionately.
Further, it was discussed that the energy force in expanding kamaboko is cuased by the crystalline of residual micelles in the starch gel lumps and the orientation of protein network molecules.抄録全体を表示PDF形式でダウンロード (206K) -
応力緩和挙動の特徴高木 一郎, 清水 亘1972 年 38 巻 7 号 p. 773-777
発行日: 1972/07/25
公開日: 2008/02/29
ジャーナル フリーBoth tensile relaxation and shear relaxation in kamaboko were examined. The results obtained were as follows:
1) By a general definition of tensile relaxation modulus,
E(t)=ƒ(t)/α-1,
the behavior is linear in very narrow extension ratio range, 1.0<α≤1.1.
2) By a definition derived from the equation of state for ideal rubber,
E(t)=3•ƒ(t)/α-α-2,
the behavior is linear in the whole measured extension ratio range, 1.0<α≤2.0.
3) The behavior in shear is linear in the whole measured strain range, and the relation between tensile relaxation modulus and shear relaxation modulus is given by the equation,
E(t)=3•G(t).
4) The generalized Maxwell model or the Eyring-Tobolsky's viscoelasticity theory should be applied to the stress relaxation behavior of kamaboko.抄録全体を表示PDF形式でダウンロード (223K) -
イワナ属魚類吉安 克彦, 麓 禎康1972 年 38 巻 7 号 p. 779-788
発行日: 1972/07/25
公開日: 2008/02/29
ジャーナル フリーThe hemoglobins (Hb's) of Salvelinus fishes (chars), including “iwana”, “kirikuchi”, “gogi”, etc., which inhabit mainly the southwestern part of Japan, were analyzed by means of a vertical starch-gel electrophoresis. Results obtained were as follows:
1. Their Hb patterns were almost indistinguishable from one another, and were similar to that of “amemasu” as reported by other authors.
2. The previous proposal that Salvelinus fishes in Japan excepting “oshorokoma” can be classified as one species on the basis of the geographical continuous variation (cline) in the number of pyloric caecums or gill-rakers was strongly supported by the present data.抄録全体を表示PDF形式でダウンロード (3723K) -
沼知 健一1972 年 38 巻 7 号 p. 789
発行日: 1972/07/25
公開日: 2008/02/29
ジャーナル フリーPDF形式でダウンロード (987K) -
1972 年 38 巻 7 号 p. 792a
発行日: 1972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 (65K) -
1972 年 38 巻 7 号 p. 792b
発行日: 1972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 (65K)
- |<
- <
- 1
- >
- >|