巻号一覧
38 巻, 9 号
選択された号の論文の17件中1～17を表示しています
- |<
- <
- 1
- >
- >|
-
実験的終宿主,及びその消化管内における嚢虫とProcercusの動態について中島 健次, 江草 周三1972 年 38 巻 9 号 p. 939-944
発行日: 1972/09/25
公開日: 2008/02/29
ジャーナル フリーFrom preliminary experiments where bladder worms, plerocercus of Callotetrarhyuchus sp., collected from the body cavity of Seriola quinqueradiata were introduced into the stomach of several species of sharks kept in aquaria, it was found that a kind of requiem shark, Triakis scyllia MÜLLER et HENLE, was suitable for tracing the development of this Trypanorhynchan cestode.
Movement and development of the bladder worms introduced orally into the stomach of T. scyllia were observed as follows: 1) In the stomach of T. scyllia the bladder worms escaped from the sorrounding membrane, made of connective tissue of S. quinqueradiata, within 12 hours after administration. 2) The naked bladder worms became very active and moved toward the valvular intestine through the middle intestine by stretching and shrinking their body. 3) At the posterior parts of the valvular intestine or the colon, the scolecis became free from the bladders and immediatly fixed themselves to the walls of the intestine with 4 tentacles. Escaping of the scolecis was completed from 6 to 18 hours after administration. 4) The main site of parasitism was the spiral valve of the terminal of the valvular intestine, though some scolecis moved to the middle part of the valvular intestine within 24 hours after administration. 5) The average infection rate of the bladder worms, determined 24 hours after administration in 2 sharks, was observed to be 65.0%.
The anchovy worms, procercus of Callotetrarhynchus sp., (procercus was a new term tentatively given by the present authors to a pre-staged larva of plerocercus), which were collected from Engraulis japonica, were scarcely attacked and penetrated the wall of the gut of T. scyllia. Part of the worms introduced were digested in the stomach and the rest were discharged from the anus within 24 hours after administration.抄録全体を表示PDF形式でダウンロード (1430K) -
ドチザメの螺旋腸内における成虫の消長について中島 健次, 江草 周三1972 年 38 巻 9 号 p. 945-954
発行日: 1972/09/25
公開日: 2008/02/29
ジャーナル フリーStudies were made on the growth of adult Callotetrarhynchus sp. in the valvular intestine of Triakis scyllia, a kind of requiem shark, which was demonstrated by a previous study to be a suitable experimental final host for this cestode. Parasitefree sharks were prepared by raising juveniles at the Himeji City Aquarium. Twenty bladder worms collected from the body cavity of Seriola quinqueradiata were introduced into each shark by a catheter into the stomach. The sharks examined for the number of adults and for the growth of the cestode from 2 to 80 days after administration. From the experiment the following conolusions were reached: 1) The adult of Callotetrarhynchus sp. was thought to be harmful to the host. Of the 35 sharks, 12 died during the course of the experiment. The dying animals always showed an abnormal movement a few days before death and severe intestinal inflammation was observed in all the dying or dead sharks. 2) The adult stage, which could continue to grow without killing the host, was limited in number. The number of adults varied with the size of the valvular intestine and with the growth of the adult. 3) In the valvular intestines of normal sharks, the post-holdfast zone of the adult parasite stretched rapidly and then segmentation started. Adults matured in about 15 days after administration at temperatures of 21.8-26.5°C. At the same time, free proglottides were found to be separated from the strobilae. All gravid proglottides moved to the outside through the anus within 40 days. Most of the adults died in the valvular intestine after about 25 days and were discharged one by one.抄録全体を表示PDF形式でダウンロード (2210K) -
隆島 史夫, 日比谷 京1972 年 38 巻 9 号 p. 955-964
発行日: 1972/09/25
公開日: 2008/02/29
ジャーナル フリーHepatic tumors in a landlocked variety of masu salmon, yamamé, Oncorhynchus masou ishikawae, were described histopathologically. The hepatic cells of this species showed hyperfunctional features during vitellogenesis, but became atrophic after attainment of ovarian maturation. Hepatic tumors were first recognizable in these depleted livers as small neoplastic cell clusters. As the growths increased in size, many of the nodules became degenerative. It is noteworthy that tumors were found at highest incidence in the fast-growing female fish. The possibility that some components of the diet are capable of promoting tumor formation in the nutritionally disordered liver is discussed.抄録全体を表示PDF形式でダウンロード (1943K) -
井田 斉1972 年 38 巻 9 号 p. 965-980
発行日: 1972/09/25
公開日: 2008/02/29
ジャーナル フリーThe present study's objective has been to clarify the tow to tow variations in the number of fish larvae taken in relation to the variation of the volume of water filtered. More than 230 surface towings and 170 towings of subsurface layers were carried out in the regions off central and southern Japan, and the results obtained are as follows:
(1) Volume of water filtered vary from tow to tow, net to net and it is difficult to keep the volume of water filtered to a constant level by only maintaining a constant ship speed and towing time.
(2) Collecting efficiency both in number and size appeared better in small meshed nets than large meshed nets at sea areas of poor plankton. However, the difference in the numbers collected diminished at towings in rich plankton waters, and the variation in collection became large with small meshed nets.
(3) Variations in collection was large for samples of low collection and this decreased by increasing the amount of collection in numbers.
(4) Movement of net during towing was stable at shallow layers and at calm seas and it oscillated to some extent at deeper layers and seas having complexed water stratification.抄録全体を表示PDF形式でダウンロード (829K) -
井田 斉1972 年 38 巻 9 号 p. 981-994
発行日: 1972/09/25
公開日: 2008/02/29
ジャーナル フリーMore than 400 towings of surface and sub-surface layers were carried out to obtain informations on the distributional features of larval fish in the waters off central Japan. The results obtained are as follows:
(1) More than 72000 individuals of larval fish were collected. Abundance in both number of species and individuals was high during spring to summer and most of these samples were represented by Engraulis japonica, Scomber japonicus, Trachurus japonicus, Myctophum asperum, Thunnus thynnus and Sebastes inermis, given in the order of abundance.
(2) Larval forms are classified into the following three types from their vertical distributions; (i) species appearing only at surface layers, (ii) species appearing at layers far below the surface and (iii) species appearing from surface to the depth of some several ten meters. There is an inverse correlation between the depth of distribution of larvae and the degree of development of chromatophores.
(3) Larvae of the dominent species are distributed at layers from surface to sub-surface layers and their zones of distribution move up with their growth. The remarkable diurnal changes of distribution of Engraulis japonica at surface layers are caused by vertical migration of larger sized larvae.抄録全体を表示PDF形式でダウンロード (777K) -
光週期を統御したコアユの胸腺にみられた退行変化本間 義治, 田村 栄光1972 年 38 巻 9 号 p. 995-1005
発行日: 1972/09/25
公開日: 2008/02/29
ジャーナル フリーThe annual salmonoid fish, Koayu was reared in outdoor hatchery ponds exposed to short (8 hours), long (16 hours), and natural photoperiods (control). These, as well as Otunen-Ayu that survived spawning and was collected in the streams of the suburbs of Niigata City, were examined histologically to elucidate the involution and regression of the thymus. Age involution of this organ commences with gonad maturation. A remarkable decrease in the number of lymphocytes and their mitotic divisions occurs, and at the same time an increase in the amount of reticular and collagenous fibers around the vessels and development of cystic spaces take place. The connective tissues and spaces disappear toward the end of involution. These regressive changes, including the disappearance of the thymus, occurred one month earlier in the short-photoperiod group than in the control group, but under the long photoperiod one to two months later than in the controls. The thymus was absent in all the Otunen-Ayu examined.抄録全体を表示PDF形式でダウンロード (938K) -
石田 力三, 広瀬 慶二, ドナルドソン Ｅ．Ｍ．1972 年 38 巻 9 号 p. 1007-1012
発行日: 1972/09/25
公開日: 2008/02/29
ジャーナル フリーThis study was carried out to determine the practical effective dose of partially purified salmon gonadotropin required for inducing ovulation in intact ayu, Plecoglossus altivelis. Salmon gonadotropin administered as a single injection of 10μg/g was very effective in inducing ovulation of ayu. Based on the previous tests in ayu using human chorionic gonadotropin (HCG), 10μg salmon gonadotropin (SG-G100) was equivalent to 1, 250 IU of HCG. An increase in body weight was shown in the gonadotropin-treated fish. This increment was dose-dependent and may have been due to an increase in ovarian weight resulting from water uptake by the oocytes.抄録全体を表示PDF形式でダウンロード (485K) -
消化管内キチナーぜ産生菌ついて南 善朗, 梶田 雅尚, 日比野 進1972 年 38 巻 9 号 p. 1013-1019
発行日: 1972/09/25
公開日: 2008/02/29
ジャーナル フリーIn order to elucidate the reasons for the highly efficient utilization of petro-yeast in freshwater fish, a series of experiments were carried out, laying emphasis on the characteristically high content of chitin in petro-yeast.
In this report, the authors examined the distribution of chitin decomposing bacteria in the digestive tracts of ayu (Plecoglossus altivelis), carp (Cyprinus carpo), and rainbow trout (Salmo gairdneri), as well as the biochemical characteristics of the isolated chitin decomposing bacteria. Chitin decomposing bacteria were isolated from the digestive tracts of the above mentioned fishes in relatively high frequencies. The proportion of chitin decomposing bacteria to total bactiria was generally high in every species of fish, particularly in fishes fed with a diet containing petro-yeast.
Most of the chitin decomposing bacteria isolated were considered to belong to Ahromonas genus according to their biochemical characteristics. This makes a marked contract with the case of marine fishes whose chitin decomposing bacteria were mainly members of genus Vibrio.
In particular, a high incidence of chitin decomposing bacteria in carp was considered to be related to a better utilization of petro-yeast by carp than by the other freshwater fish.抄録全体を表示PDF形式でダウンロード (431K) -
清水 幹博, 滝 襄1972 年 38 巻 9 号 p. 1021-1034
発行日: 1972/09/25
公開日: 2008/02/29
ジャーナル フリーHistotopographical observations of collagen-like fibers and other organic substances in the mature test plate and the associated tissues of a sea urchin were recently carried out. The collagen-like fibers, complicated with acid mucopolysaccharides, PAS-positive materials, non-fibrous proteins and sudanophilic substances, were found to occur in actively growing areas of the test plate, the spine muscle and the peristomial membrane, whereas no such fibers could be found in the mid-portion of the test plate and the calcified areas of the peristomial membrane. A seasonal difference in the histochemical nature of the above organic substances was not detected.抄録全体を表示PDF形式でダウンロード (1761K) -
森井 秀昭, 金津 良一1972 年 38 巻 9 号 p. 1035-1039
発行日: 1972/09/25
公開日: 2008/02/29
ジャーナル フリーIn order to elucidate the origin and the function of iso-valeric acid in dolphin oil, we studied the free volatile fatty acids in the blood and the stomach fluids, and the pH values of the stomach fluids of porpoise, Neomeris phocaenoides. The results are as follows:
1) As free fatty acids in the blood, the presence of each acid, acetic, propionic, iso-butyric, n-butyric and iso-valeric acid was observed. Among these acids, iso-valeric acid was most dominant.
2) The same free volatile fatty acids as in the blood were identified in the stomach fluids, and they were mostly both acetic and iso-valeric acids.
3) The pH values of the stomach fluids were different between two samples, and the pH values in the I st stomach were lower than in the II nd stomach in both samples.抄録全体を表示PDF形式でダウンロード (302K) -
奥谷 康一, 岡市 友利, 来田 秀雄1972 年 38 巻 9 号 p. 1041-1049
発行日: 1972/09/25
公開日: 2008/02/29
ジャーナル フリーThe purpose of the present study was to contribute to background knowledge of the relation between mineralization and bacterial population in the Hiuchi-nada.
To measure mineralization activity, samples of sea water and bottom sediments were incubated in a medium containing U-14C-glucose and the radioactive carbon dioxide pro-duced was estimated.
In the surface waters, mineralization values ranged from 25 to 1296mg-cm3. day, and heterotrophic bacterial populations ranged from 1.1×104 to 2.4×107 cells/ml. Higher values of mineralization and bacterial population were more common in the inshore waters than areas remote from land influences.
Comparison of several stations suggested that some relation exists between mineralization activities and heterotrophic bacterial numbers.
In the bottom sediments mineralization values ranged from 69 to 204μg-C/100g. day, and heterotrophic bacterial populations ranged from 1.3×105 to 2.4×107 cells/g. The relationship between mineralization and bacterial population in this case is obscure. Mineralization activities per unit bacterial cell ranged from 0.27 to 96.88×10-12mg-C/hour in sea water and from 1.82 to 116.56×10-12mg-C/hour, in bottom sediments.抄録全体を表示PDF形式でダウンロード (407K) -
森下 達雄1972 年 38 巻 9 号 p. 1051-1056
発行日: 1972/09/25
公開日: 2008/02/29
ジャーナル フリーSome properties of the partially purified, proteolytic enzyme preparation from the liver of octopus, Octopus vulgaris CUVIER, were investigated.
1. The optimun pH for casein hydrolysis was in two pH ranges of 2.0-3.0 and 5.5-6.0.
2. The enzyme activity on casein at pH 2.5 and that at pH 6.0 were the most stable in the pH range 4.0-5.5 in both cases and when heated for 30 minutes at pH 5.0 the former was stable up to 50°C, while the latter was stable up to 45°C.
3. The effect of bivalent metallic ions and NaCN on casein hydrolysis at pH 2.5 was negligible, while the enzyme action was accelerated by cysteine and ascorbic acid. On the other hand, the hydrolysis of casein at pH 6.0 was strongly accelerated not only by cysteine and ascorbic acid but also by NaCN, while a very weak inhibition with metallic ions such as Mn2+, Cu2+ and Zn2+ was observed.
4. The enzyme preparation hydrolyzed carbobenzoxy-L-glutamyl-L-tyrosine at pH 5.0 and also deamidated benzoyl-L-argininamide and glycyl-L-phenylalaninamide at pH 5.0 in the presence of cysteine.
5. The above results suggest that the octopus liver contains at least two distinct proteolytic enzymes, the major part of which consists of cathepsin-like enzymes.抄録全体を表示PDF形式でダウンロード (350K) -
森下 達雄1972 年 38 巻 9 号 p. 1057-1060
発行日: 1972/09/25
公開日: 2008/02/29
ジャーナル フリーIn the previous paper dealing with the properties of the proteolytic enzyme from the liver of octopus, Octopus vulgaris CUVIER, it was shown that the action of the partially purified enzyme preparation on three synthetic substrates, such as carbobenzoxy-L-glutamyl-L-tyrosine (CGT, a substrate of cathepsin A), benzoyl-L-argin-inamide (BAA, a substrate of cathepsin B) and glycyl-L-phenylalaninamide (GPA, a substrate of cathepsin C), was detected.
The data of the present investigation suggest that the enzyme action is due to the actions of cathepsins A, B and C. Thus it may be concluded that cathepsins A, B and C are present in the liver of octopus. These cathepsins A, B and C have optimal hydrolytic activities at near pH 5.0 on CGT, BAA and GPA, respectively, and their activities were high in the order B > A > C.抄録全体を表示PDF形式でダウンロード (172K) -
蛋白分解酵素溶解法によつて得た標品との比較中嶋 昭正1972 年 38 巻 9 号 p. 1061-1066
発行日: 1972/09/25
公開日: 2008/02/29
ジャーナル フリーThe differences in composition and properties of crude chondroitin sulfate preparations obtained by the alkaline liquefaction method (A-CCS) and the Pronase digestion method (E-CCS) were studies and the following results were obtained.
1) Both A-CCS and E-CCS contained mainly chondroitin sulfate A and a small amount of chondroitin sulfate C, keratosulfate and hyaluronic acid.
2) A-CCS contained less keratosulfate and protein than E-CCS, and the molecular weight of A-CCS was half that of E-CCS.
3) By fractional precipitation of A-CCS with ethanol, chondroitin sulfate which was slightly contaminated with keratosulfate sand hyaluronic acid was obtained in about 70% yield.
4) A-CCS was stronger than E-CCS in antioxidative action on vitamin C and weaker in protective action on colloid.抄録全体を表示PDF形式でダウンロード (389K) -
食餌性脱皮ホルモンの効果金沢 昭夫, 田中 憲穂, 柏田 研一1972 年 38 巻 9 号 p. 1067-1071
発行日: 1972/09/25
公開日: 2008/02/29
ジャーナル フリーThe dietary effect of three different ecdysones isolated from plants on molting in the prawn was studied.
All three ecdysones were effective in inducing molting at the concentrations used, but the growth rate of prawn fed on diet supplemented with ecdysones revealed a lower percent-age as compared with that of prawn fed on an ecdysone-free diet.抄録全体を表示PDF形式でダウンロード (237K) -
吉田 多摩夫, 野村 稔1972 年 38 巻 9 号 p. 1073
発行日: 1972/09/25
公開日: 2008/02/29
ジャーナル フリーPDF形式でダウンロード (87K) -
森 勝義1972 年 38 巻 9 号 p. 1075
発行日: 1972/09/25
公開日: 2008/02/29
ジャーナル フリーPDF形式でダウンロード (97K)
- |<
- <
- 1
- >
- >|