巻号一覧
55 巻, 11 号
選択された号の論文の28件中1～28を表示しています
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藤野 和男, 金子 良一, 池田 保, 荒井 克俊, 奥村 誠一1989 年 55 巻 11 号 p. 1875-1883
発行日: 1989/11/25
公開日: 2008/02/29
ジャーナル フリーAnalyses on genotypic relationships between parents and their normal and triploid offspring sib populations have made it possible to estimate rate of gene-centromere recombination at the four loci coding phosphogluconate dehydrogenase, phosphoglucomutase, phosphoglucose isomerase, and esterase in the pacific abalone Haliotis discus hannai. Application of the similar analyses on parentage in genotypic compositions of the three mating groups of the pacific abalone allowed to estimate rate of gene-centromere recombination at leucine-aminopeptidase and malic enzyme loci as well as an additional locus coding phosphoglucomutase but different from that reported before. During the analyses, an excessive occurrence of homozygote genotype was observed at leucine-amino-peptidase locus commonly in triploid sib populations.抄録全体を表示PDF形式でダウンロード (651K) -
藤岡 康弘, 伏木 省三1989 年 55 巻 11 号 p. 1885-1892
発行日: 1989/11/25
公開日: 2008/02/29
ジャーナル フリーSeasonal changes in hypoosmoregulatory ability of hatchery-reared biwa salmon Oncorhynchus rhodurus and amago salmon O. rhodurus were examined by following changes in plasma Na+ concentration after transfer to 70% seawater. The landlocked biwa salmon lose parr marks and become silvery bodied (smolt) underyearling during early summer. They showed the maximum hypoosmoregulatory ability from underyearling May to July, when they transformed from parr to smolt and migrated to the lake. However, the smolt did not show increased seawater adaptability as compared with parr in underyearling May, and the ability decreased markedly in autumn and winter. There was no essential difference in seawater adaptability between smolt and dark parr or yearling parr. On the other hand, amago salmon, which smoltify and go down stream to the sea in late autumn and early winter, showed better seawater adaptability than biwa salmon throughout all developmental stages examined. Especially, the smolts during the period from November to January showed good osmoregulatory ability. The poor hypoosmoregulatory ability of biwa salmon as compared with amago salmon may be related to their lacustrine nature and a long period passed since this species was landlocked in Lake Biwa.抄録全体を表示PDF形式でダウンロード (577K) -
中村 元彦1989 年 55 巻 11 号 p. 1893-1898
発行日: 1989/11/25
公開日: 2008/02/29
ジャーナル フリーA comparative capture experiment of anchovy larvae Engrauris japonicus was carried out with a 60cm-BONGO net (0.15mm mesh width) towed at 2 different speeds of 56 and 136cm/s. A total of 12 tows was alternately repeated in the same area for about 4h. Catches of anchovy eggs were not significantly different, but catches of anchovy larvae were different between the tows at 2 different speeds. For the larvae less than 3.5mm in total length, catches at the low speed were more than those at the high speed. On the other hand, for the larvae larger than 3.5mm in total length, catches at the high speed were more than those at the low speed. The capture probablity was estimated from the catch data obtained in the comparative experiment, using a geometric model involving alarm distance and larval swimming speed. The probability thus estimated decreases with the increasing length of larvae and decreasing towing speed of the net.抄録全体を表示PDF形式でダウンロード (496K) -
角田 信孝1989 年 55 巻 11 号 p. 1899-1905
発行日: 1989/11/25
公開日: 2008/02/29
ジャーナル フリーAge Determining Character and Growth of a Sea Urchin Pseudocentrotus depressus
Nobutaka Kakuda*1
The growth of a sea urchin Pseudocentrotus depressus was investigated using dark brown zones in the fifth genital plate as an age determining character. The dark brown zones which were arbitrarily referred to as ring marks were first ascertained to be an age determining character, i.e. they were formed once a year (from June to October) and there is a significant correlation between the width of the fifth genital plate and that of each annual ring mark.
The relationship between the test diameter (D, mm) and the width of the fifth genital plate (R, mm) was expressed by the following equation: R=0.30768+0.04161D-0.00008D2. Based on these results, growth formulae for the test diameter (Dt, mm) and total weight(Wt, g)were adequately expressed by the Von Bertalanffy's equations:
Dt=84.1(1-e-0.3442(t-0.3617)), Wt=209.0(1-e-0.3442(t-0.3617))2.8793
respectively. Seasonal changes in colour of the marginal zone of the genital plate revealed that the white opaque zone and the dark brown zone were formed in the faster plate growth period (from November to May) and in the slower plate growth period (from June to October), respectively.抄録全体を表示PDF形式でダウンロード (1780K) -
湯本 勲, 山口 賢二, 山田 毅史, 絵面 良男, 木村 喬久1989 年 55 巻 11 号 p. 1907-1914
発行日: 1989/11/25
公開日: 2008/02/29
ジャーナル フリーThe bacterial flora of surface seawater at Osatube station in Funka Bay were investigated from February to December 1986. Marine Moraxella and marine Flavobacterium/Cytophaga were predominant in many samples, and marine Pseudomonas, Vibrio, Alteromonas, terrestrial Moraxella or terrestrial Flavobacterium/Cytophaga increased in some samples. In this area, Alteromonas sp., a bacterial predator and causative agent of red-spot was detected during July to September 1986. On double-layer agar plate, 43.3% of 180 strains isolated during July to December were lysed by Alteromonas sp. strain No. 8, the representative strain of red-spot causing bacterium. Each lytic susceptibility of the dominant genera to No. 8 was follows: marine Moraxella, 66%; marine Flavobacterium/Cytophaga, 17%; Alteromonas, 63%; Vibrio, 53%; marine Pseudomonas, 58% and terrestrial Flavobacterium/Cytophaga, 71%. It was also found that lytic enzyme of the red-spot forming bacterium lysed both gram negative and gram positive bacteria. According to these results, it may be considered that bacterial flora and water temperature are important factors in regulating the distribution of the Alteromonas sp. (red-spot causing bacterium) in coastal waters.抄録全体を表示PDF形式でダウンロード (570K) -
林 俊辰, 梨本 勝昭, 山本 勝太郎1989 年 55 巻 11 号 p. 1915-1919
発行日: 1989/11/25
公開日: 2008/02/29
ジャーナル フリーThe characteristics of lift and drag of the saucer-shaped otter board were studied using models with five kinds of cambers (0, 5, 10, 15, 20%). The models attached with appendages were rigged for an attack angle of between 0°and 30°and for an inward heel angle of between 0°and 10°at 5-degree intervals. The horizontal lift, drag and moment were measured by a three-component load cell in a circulating test tank. The lift and drag coefficients, lift-drag ratio and coefficient of pressure centre were then calculated.
Only from the mean lift-drag ratio which was narrowly defined and calculated using the width of 5°on both sides of the attack angle at the maximum lift-drag ratio for all models, it was difficult to evaluate the efficiency of the otter boards because the variation of the mean lift-drag ratio at given different cambers was not significant. Therefore we judged the stability of the otter boards both from the width of attack angle at 75% of the maximum lift-drag ratio and from the coefficient of pressure centre. As a result, the otter boards with cambers of between 15% and 18% and with an attack angle of between 10°and 30°were stable and better than the others.抄録全体を表示PDF形式でダウンロード (346K) -
町井 紀之, 能勢 幸雄1989 年 55 巻 11 号 p. 1921-1925
発行日: 1989/11/25
公開日: 2008/02/29
ジャーナル フリーThe safety of a Peruvian small wooden purse seiner was examined applying the Japanese safety standard for small fishing boats. The “UNA-I” which is a prototype of a Peruvian small wooden purse seiner was used in this study.
Safety coefficient C=θp/θd=1.2 of the “UNA-I” was obtained in the worst condition of heel during fishing operation, where θp is the permissible maximum angle of heel and θd is the dynamic angle of heel. Also, for heeling caused by unexpected natural irreguarities at sea, the “UNA-I” was kept in reserve θmax/θd=3.3, whereθmax is the angle in the maximum righting moment.
The calculated static and dynamic angles of heel (θs, θd) were verified by the mesaured mean and maximum angles of experiments, and were approximately fitted with the measured values. The simplified method presented in this paper can be applied to examine the safety of similarly shaped small purse seiners utilized in Third World Countries.抄録全体を表示PDF形式でダウンロード (326K) -
松田 皎, 胡 夫祥, 石沢 聡1989 年 55 巻 11 号 p. 1927-1934
発行日: 1989/11/25
公開日: 2008/02/29
ジャーナル フリーA canvas-made cambered wing parakite with ribs was designed as a net-mouth opening device for practical use. To carify its hydrodynamic characteristics, a flume experiment was conducted on the variations of the camber ratio, the number of ribs and the vertical curvature at a constant aspect ratio. Results showed that a wing parakite with 10 ribs (camber ratio 17%) was highly efficient. When this parakite was set with 6.5% vertical curvature, the maximum lift coefficient was 1.14 and the maximum lift-drag ratio was 3.35. The performance of this wing parakite was comparable to that of an ordinary cambered upright otter board.抄録全体を表示PDF形式でダウンロード (474K) -
岡本 浩明, 佐藤 一, 島崎 健二1989 年 55 巻 11 号 p. 1935-1940
発行日: 1989/11/25
公開日: 2008/02/29
ジャーナル フリーSeasonal changes of gonosomatic indices (GSI) and histological characteristics of ovaries in two genetically distinctive sympatric groups of sand lance from the region, east of Cape Soya, were compared. GSI values of one group which was fixed for Ldh-2(300) (W-b group) started to increase at least three months earlier than the other one group which was fixed for Ldh-2(100) (W-a group). In both sexes of W-b group, their GSI exceed 20.0 in November, while GSI of females in W-a group in this month were less than 5.0 in most case. Several specimens of W-a group collected in May, had ripe eggs or sperm which had the ability to fertilize and develop. Remaining specimens after spawning whose ovaries were occupied by oocytes at the peri-nucleolus stage, and many empty follicles and several remained ripe eggs were observed. While, in ovaries of the W-b group in the same sample, oocytes at the oil droplet stage were dominant, and no empty follicle or remained eggs were found. From these results the spawning period is supposed to be late November to December in W-b group, and late March to early May in the W-a group. The difference in their reproductive cycles would play an important role as a mechanism for reproductive isolation between these two sympatric groups.抄録全体を表示PDF形式でダウンロード (1984K) -
Kaname Sato, Hisahiko Watanabe, Masanobu Ishikawa, Hayao Akizawa1989 年 55 巻 11 号 p. 1941-1945
発行日: 1989/11/25
公開日: 2008/02/29
ジャーナル フリーEnergy input for squid angling in Japan was examined using census data, i.e., Economy of Fisheries Establishments. The fuel oil consumption per catch was little dependent either on the tonnage of boats or on the location of fishing area. Fuel oil consumption per catch, which was almost constant at 0.2l/kg-catch in 1950's, and was 0.31/kg-catch in 1960's made a rise in 1970. The rise continued until it reached a maximum of 2l/kg-catch in around 1978, after that a gradual decrease was observed. The rise was little affected by the skyrocketing rise of oil prices but was more related to the sudden drop of catch per fishing day per boat which took place in 1970. During this period of time, squid angling operated with a 50-100t boat increased greatly fishing days per voyage (five-fold) and fuel oil consumption per fishing day (twice). The increase in fuel oil consumption is ascribed to the increase of power of fishing lamps.抄録全体を表示PDF形式でダウンロード (283K) -
K. F. Shim, C. S. Ho1989 年 55 巻 11 号 p. 1947-1953
発行日: 1989/11/25
公開日: 2008/02/29
ジャーナル フリーFemale guppies were fed diets containing different levels and ratios of calcium (0.03%, 0.59% and 1.28%) and phosphorus (0.05%, 0.53% and 1.23%) for 12 weeks. Growth and feed conversion rates were found to be positively correlated with dietary levels of P but not of Ca. Lower levels of vertebral ash, Ca and P were also seen in fish given 0.05% P diets. The dietary phosphorus level required for optimum growth and mineralisation was found to fall between 0.53% and 1.23%.抄録全体を表示PDF形式でダウンロード (548K) -
西尾 孝之, 石田 祐三郎1989 年 55 巻 11 号 p. 1955-1960
発行日: 1989/11/25
公開日: 2008/02/29
ジャーナル フリーIron-solubilizing activity of heterotrophic bacteria isolated from sediment of the Komatsunuma Lagoon was examined by stabbing bacteria on agar plates contained granules of ferric phosphate.
Iron-solubilizing ability was judged from clear zones caused by solubilization of granules around the colony. Both because about one third of the heterotrophic bacteria exhibited iron-solubilizing activity and because their flora were not so much different from those of total heterotrophic bacteria, the character seems common to bacteria living in aerobic environments. The ratio of ironsolubilizing bacteria appeared to be low when Eh and/or pH in sediment were low. However, the ability of bacteria to solubilize iron could not be explained only in terms of a reduction of iron or in terms of a decrease in pH by organic acid production.抄録全体を表示PDF形式でダウンロード (1276K) -
広田 望, 鹿山 光, 上岡 薫, 熊谷 晶子1989 年 55 巻 11 号 p. 1961-1969
発行日: 1989/11/25
公開日: 2008/02/29
ジャーナル フリーSix pigmented zones were separated from samples of chloroplast of brown algae Hizikia fusiformis by SDS-polyacrylamide gel electrophoresis (SDS-PAGE). The resolved zones in order of increasing mobility were: I (green), II (green), III (yellow green) and IV (brown orange) (these four were chlorophyll-protein complexes (CPC)) as well as zone V (green) and zone VI (orange), which were free pigments in the non-protein part. The slowest migrating zone (I) contained chlorophyll (Chl) a and β-carotene, and had similar properties to the Chi a-protein complex (CPl) isolated from other brown algae in the absorption and fluorescence spectra. Zone II contained Chl a, Chl c and fucoxanthin, while III contained Chl a, Chl c, fucoxanthin and very little other xanthophyll. The fastest migrating (IV: brown orange zone) contained Chl a, Chl c and fucoxanthin, and showed efficient energy transfer from Chl c and fucoxanthin to Chl a. The brown orange complex of IV might be the major Chl a-Chl c-fucoxanthin protein complex in H. fusiformis chloroplast and play the role of the light harvesting complex.抄録全体を表示PDF形式でダウンロード (511K) -
藤井 建夫, 平山 昌広, 奥積 昌世, 安田 松夫, 西野 甫, 横山 理雄1989 年 55 巻 11 号 p. 1971-1975
発行日: 1989/11/25
公開日: 2008/02/29
ジャーナル フリーChanges in sensory evaluation, K-value, 2-thiobarbituric acid (TBA) value, trimethylamine (TMA), pH and viable bacterial numbers were examined for sardine Sardinops melanostictus packed under air, 20% CO2-80% N2 (v/v) or 80% CO2-20% N2 in plastic bags with low gaspermeability during 5°C-storage. Shelf-life was affected mainly by the appearance of rancid taste; samples packed under modified atmospheres had double the shelf-life of samples packed under air. The TBA number had high correlation with sensory analyses of the samples, while K-values showed no significant differences. The amounts of TMA decreased depending upon the enriched CO2, concentration. Growth of aerobic bacteria was inhibited in samples containing 80% CO2, although it was not significantly inhibited in samples containing 20% CO2, Anaerobic bacterial numbers were little affected by CO2.抄録全体を表示PDF形式でダウンロード (349K) -
渡辺 武, Supis Thongrod, 竹内 俊郎, 佐藤 秀一, 窪田 三朗, 藤巻 由紀夫, C. Young Cho1989 年 55 巻 11 号 p. 1977-1982
発行日: 1989/11/25
公開日: 2008/02/29
ジャーナル フリーA feeding experiment was conducted to characterize essential fatty acid deficiency and to determine the effect of dietary n-6 and n-3 fatty acids on growth and histological changes of white fish Coregonus lavaretus maraena. Growth, feed efficiency together with survival rate were lowest in fish fed a diet containing 5% 18:1n-9 as a sole lipid source. On the otherhand, all parameters were effectively improved by supplementation with n-3 fatty acids, and were highest in fish receiving the diet containing n-3 highly unsaturated fatty acids (HUFA) greater than 0.5%. However, 18:2n-6 was found to be ineffective for enhancing growth. Addition of 18:2n-6 to 18:3n-3 did not further improve growth and feed efficiency. The fish fed the 18:1n-9 diet showed swollen pale livers with abnormalities in histological analysis. This abnormal histological condition was improved by supplementation of 0.5% n-3 HUFA. The ratio of 20:3n-9 to 22:6n-3 in the fatty acid composition of polar lipid fractions from the livers, one of the EFA indices for freshwater fish, was highest in the EFA-deficient group and lowest in the fish receiving 1% n-3 HUFA in diet.
These results indicate that n-3 fatty acids are essential for white fish.抄録全体を表示PDF形式でダウンロード (1280K) -
Supis Thongrod, 竹内 俊郎, 佐藤 秀一, 渡辺 武1989 年 55 巻 11 号 p. 1983-1987
発行日: 1989/11/25
公開日: 2008/02/29
ジャーナル フリーA feeding experiment was conducted to determine the requirement of fingerling white fish Coregonus lavaretus maraena for dietary n-3 fatty acids. Growth, and feed efficiency together with survival rate were lowest in fish receiving a diet containing 5% 18: 1n-9 as a sole lipid source; all parameters were effectively improved by supplementation of linolenic acid (18: 3n-3) or n-3 highly unsaturated fatty acids (n-3 HUFA), and highest in fish fed a diet containing n-3 HUFA greater than 0.5%. The liver lipid content was highest in fish fed the 18: 1n-9 diet, and was effectively reduced by supplementation of n-3 HUFA by more than 1.0%, but not by 18: 3n-3 even at a level of 2%. Dietary 18: 3n-3 was converted to 22: 6n-3, but the percentage of 22: 6n-3 in the liver polar lipid of fish fed 1 and 2%. 18: 3n-3 was much lower than that of fish fed 0.25%. n-3 HUFA. The data obtained in the present study indicate that n-3 fatty acids are essential for white fish and that the EFA value of n-3 HUFA was much higher than that of 18: 3n-3. The requirement of fingerling white fish for dietary n-3 HUFA was found to be around 1%.抄録全体を表示PDF形式でダウンロード (316K) -
渡辺 武, 荒川 敏久, 竹内 俊郎, 佐藤 秀一1989 年 55 巻 11 号 p. 1989-1995
発行日: 1989/11/25
公開日: 2008/02/29
ジャーナル フリーA feeding experiment was conducted to compare the essential fatty acid (EFA) efficiency between eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) for juvenile striped jack.
The fish fed an EFA-deficient diet began to show a high mortality together with poor appetite and swimming activity around 10 days after feeding, although there was no marked external deficiency sign. The growth and feed efficiency were improved by addition of EPA and DHA to the diet. However, the supplementation of EPA alone was not effective in preventing high mortality or improving the growth rate of the fish. A replacement of one half of EPA with DHA effectively improved the growth and feed efficiency as well as reducing mortality. On the other hand, the growth and feed efficiency were highest in the fish fed the diet containing DHA and the mortality due to the EFA-deficiency was almost completely prevented by DHA alone. The fatty acid analyses of whole body lipids have shown that EPA is converted to 22:5n-3,
but not to DHA, and that DHA is not retroconverted to 22:5n-3 and EPA.抄録全体を表示PDF形式でダウンロード (467K) -
丹羽 栄二, 山田 宏, 加納 哲, 中山 照雄1989 年 55 巻 11 号 p. 1997-2000
発行日: 1989/11/25
公開日: 2008/02/29
ジャーナル フリーIn order to clarify the thermal behavior of actomyosin subunits during setting of salted fish flesh sol, shio-surimi, the fractionation tests were carried out on the actomyosin solutions of various species heated at 40°C. With the progress of heating Pacific mackerel actomyosin solution, nonaggregative “myosin heavy chain fraction” was rapidly decreased, and this was mainly due to rapid decrease in myosin heavy chain and gradual decrease in tropomyosin and actin. Simultaneously, non-aggregative “actin fraction” was a little decreased, and this was due to gradual decrease in actin, while myosin light chains and troponins contained in this fraction were hardly decreased. On the other hand, heat-aggregative “precipitated fraction” was rapidly increased from the beginning of heating and this was due to rapid increase in myosin heavy chain and a gradual increase in tropomyosin and actin. But myosin light chains and troponins contained in this fraction were hardly increased. Such changes were especially remarkable in the “so-called” easily setting species, such as flying fish, Pacific mackerel, Spanish mackerel and jack mackerel, but a little in the hardly setting species, such as chicken, beef, pork and whale.抄録全体を表示PDF形式でダウンロード (283K) -
飯島 憲章, 相原 美和子, 鹿山 光, 岡崎 三代, 原 一郎1989 年 55 巻 11 号 p. 2001-2007
発行日: 1989/11/25
公開日: 2008/02/29
ジャーナル フリーCarp plasma lipoproteins under fed condition were fractionated by sequential ultracentrifugation into VLDL (d<1.006g/ml), LDL (d=1.006-1.063g/ml), and HDL (d=1.063-1.21 g/ml) according to the same density intervals of human substances. Under starved conditions only LDL and HDL were recovered, carp plasma VLDL was not recovered. The lipids concentration in carp plasma VLDL was 83.3% and its main component was triglycerides. Carp plasma lipoproteins were mainly devided into three components by polyacrylamide gel electrophoresis; Band 1, Band II, and Band III. Carp plasma HDL prepared by sequential ultracentrifugation corresponded to Band I. The lipids concentration of carp plasma HDL was about 44% both under starved and fed conditions and its main compoinent was phospholipids. Band II distributed in HDL fraction under a starved condition, however, it was recovered in LDL fraction under a fed condition. Carp plasma LDL was recogenized as a heterogeneous component and mainly distributed in the zone of Band III. Carp plasma LDL had a similar particle size to human plasma LDL. The lipids concentration in LDL under a fed condition increased about 15% when compared to that under a starved condition.抄録全体を表示PDF形式でダウンロード (1371K) -
西島 敏隆, 畑 幸彦, 山内 章三1989 年 55 巻 11 号 p. 2009-2014
発行日: 1989/11/25
公開日: 2008/02/29
ジャーナル フリーPhysiological growth characteristics of Prorocentrum triestinum SCHILLER (Dinophyceae), a red tide phytoplankton, were examined in axenic clonal cultures.
P. triestinum incubated in ASP12 NTA was found to multiply during the early light period under a light-dark cycle and to require light intensity higher than 6, 000lx for normal growth. The organism preferred high temperature and salinity, and resisted a wide range of pH. Optimal temperature, salinity, and pH value for growth were 20-30°C, 31.5-35.0‰, and 6.5-8.5, respectively. The level of nitrate to maximize the final cell density was about 1.0mg at/l, but the growth rate saturated at a lower level of 0.01mg at/l. The organism utilized glycerophosphate as well as inorganic phosphate as phosphorus sources. The optimal PO4-P concentration maximizing its cell yield was 0.1mg at/l, and the growth rate saturated at 0.005mg at/l PO4-P. The organism required vitamin B12 essentially for growth; its half-saturation constant was 0.36ng/l. The vitamin B12 level to maximize both growth rate and cell yield was about 4ng/l. The maximum specific growth rates under the above optimal growth conditions were 0.63-0.95 d-1.抄録全体を表示PDF形式でダウンロード (1096K) -
Suda Tandavanitj, 石田 誠司, 奥谷 康一1989 年 55 巻 11 号 p. 2015-2019
発行日: 1989/11/25
公開日: 2008/02/29
ジャーナル フリーA marine strain of Pseudomonas produces a highly viscous polysaccharide which was extracted with 1% phenol solution and purified by addition of ethanol followed by precipitation with Cetavlon. This polysaccharide preparation which was homogeneous in both ultracentrifugal and electrophoretic analyses was composed of galactose, galacturonic acid, glucosamine, galactosamine, alanine, and pyruvate in molar ratios of 1.0:1.7:1.1:2.5:1.2:1.3, together with acetyl groups.抄録全体を表示PDF形式でダウンロード (1113K) -
中尾 実樹, 矢野 友紀, 松山 博子, 上村 毅1989 年 55 巻 11 号 p. 2021-2027
発行日: 1989/11/25
公開日: 2008/02/29
ジャーナル フリーThe third component (C3) of carp complement was purified to homogeneity by a four-step purification procedure: 1) affinity chromatography on Blue-Cellulofine, 2) QAE-Sephadex A-SO chromatography, 3) gel filtration on Sepharose CL-6B, and 4) CM-Sephadex C-50 chromatography. Hemolytic activity of carp C3 was assayed using intermediate cells, EAC14, and hydrazine-treated carp serum.
The final recovery of C3 activity was 17%. Carp C3 showed an electrophoretic mobility of β-globulin with a molecular weight of 194, 000. The protein consisted of two carbohydrate-containing subunits of 120, 000 (α-chain) and 74, 000 β-chain) which were linked by disulfide bonds. In agreement with mammalian C3, carp C3 was inactivated by nucleophilic attack by amines such as hydrazine, ammonia, hydroxylamine and methylamine, but it showed considerable resistance against chaotropic reagents such as KBr and KSCN. In addition, it was shown that carp C3 attached covalently to a zymosan particle as a result of the activation of the alternative complement pathway.抄録全体を表示PDF形式でダウンロード (1984K) -
山口 峰生, 本城 凡夫1989 年 55 巻 11 号 p. 2029-2036
発行日: 1989/11/25
公開日: 2008/02/29
ジャーナル フリーThe noxious red tide flagellate Gymnodinium nagasakiense (Dinophyceae) was collected from Suo-Nada, in the western section of Seto Inland Sea. The effects of temperature, salinity and irradiance on growth of this organism were examined using axenic culture to evaluate the relative importance of these factors on dynamics of natural populations. The growth of G. nagasakiense was observed at the irradiance more than 10μE/m2/s and saturated at 110μE/m2/s. The growth of the flagellate was examined in 25 different combinations of temperature (10 to 30°C) and salinity (10 to 30‰) under saturated irradiance. Growth occurred at temperatures from 10 to 30°C and at salinities from 15 to 30‰. The highest growth rate was observed in the combination of 25°C and 25‰. The tolerable salinity range of growth was relatively wide at optimum temperature and was reduced to a much narrower range at suboptimal temperatures. A statistical test indicates that temperature and salinity interact in their influence on growth. The present study reveals that G. nagasakiense is an eurythermal and euryhaline organism. These physiological characteristics presumably allow them to endure the winter as motile cells, which in turn act as the seed population for the summer red tide.抄録全体を表示PDF形式でダウンロード (587K) -
坂口 守彦, 村田 道代1989 年 55 巻 11 号 p. 2037-2041
発行日: 1989/11/25
公開日: 2008/02/29
ジャーナル フリーSeasonal variations in the level of free amino acids (FAA) and nonprotein nitrogen (NPN) were investigated in the whole body and adductor muscle of cultured oyster Crassostrea gigas. In the whole body, glutamic acid, alanine, glycine, proline, and β-alanine were abundant. There were marked seasonal variations in level of almost all FAA with a maximum in November to March and with a minimum around August, suggesting that the oyster meat is more palatable in winter to early spring than in summer. Taurine was also abundant in the whole body but showed maximum and minimum levels in June and September, respectively.
In the adductor muscle, arginine was found to be rich in addition to the FAA present in the whole body. The FAA levels exhibited pronounced seasonal fluctuations with a maximum in November to April and with a minimum in either July or August. Taurine showed a trend similar to that of the whole body. NPN levels in both whole body and adductor muscle peaked in March and came to the bottom in July.抄録全体を表示PDF形式でダウンロード (427K) -
室伏 誠, 出口 吉昭1989 年 55 巻 11 号 p. 2043
発行日: 1989/11/25
公開日: 2008/02/29
ジャーナル フリーPDF形式でダウンロード (945K) -
Marco A. Igarashi, 杉田 治男, 出口 吉昭1989 年 55 巻 11 号 p. 2045
発行日: 1989/11/25
公開日: 2008/02/29
ジャーナル フリーPDF形式でダウンロード (105K) -
坂田 泰造, 下酔尾 悟1989 年 55 巻 11 号 p. 2047
発行日: 1989/11/25
公開日: 2008/02/29
ジャーナル フリーPDF形式でダウンロード (119K) -
荒木 繁, 桜井 武麿, 大房 剛, 鹿山 光1989 年 55 巻 11 号 p. 2049
発行日: 1989/11/25
公開日: 2008/02/29
ジャーナル フリーPDF形式でダウンロード (92K)
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