巻号一覧
48 巻, 11 号
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今田 克, 安部 敏男1982 年 48 巻 11 号 p. 1507-1516
発行日: 1982/11/25
公開日: 2008/02/29
ジャーナル フリーEleven kinds of commercially available herbicides were examined for elimination of algae which might contaminate the artificial culture of laver. Selective herbicidal activities of drugs were checked by comparing the growth of laver fronds and diatoms in cultures containing drugs of serial concentration.
Paraquat and to some extent diquat, quaternary salt of bigyridyl, were found suitable as selective herbicides for laver. Various kinds of algae, diatoms, Chlorella (green algae), Brachy trichia (blue-green algae) were completely killed by paraquat in concentrations below 100mg/l, but laver was not affected by paraquat in concentrations below 700mg/l at any stage of the life cycle.
The herbicidal action of paraquat is involved in photosynthesis, but the required light intensity was 1300lx.
Selective resistance of laver to paraquat was involved in the characteristic sulfite reduction system conjugated with photosynthesis; cysteine added in the culture medium decreased the effect of resistance of laver.
The stability of paraquat in seawater and fresh water and the effects of meatal ion, ascorbic acid, and light on its stability were examined.抄録全体を表示PDF形式でダウンロード (701K) -
今田 克, 斉藤 祐一1982 年 48 巻 11 号 p. 1517-1524
発行日: 1982/11/25
公開日: 2008/02/29
ジャーナル フリーTo determine of suitable artificial light source for laver culture, 4 types of arc lamp, e. g. white fluorescent lamp, high pressure mercury lamp, thallium mercury lamp and metal-halide lamp were examined. According to the resuls of culture test of germlings or laver thallus in a vessel equipped the test lamp, the most suitable lamp was selected with the respect to the growth rate, thallus color and contamination by the other algae under the same light intensity.
The results were as follows.
(1) In the culutre illuminated with the thallium mercury lamp laver thallus showed high gorwth rate, dark greenish color and contaminants did not occur, in consequence thallium mercury lamp was the most suitable one for laver culutre.
(2) In the cluture illuminated with the fluorescent lamp, high pressure mercury lamp and metal-hiald lamp laver thallus showed reddish black in color and much contaminants occurred.
(3) Metal-halide lamp was considered to have an advantage of the highest energy effciency.抄録全体を表示PDF形式でダウンロード (610K) -
岡崎 登志夫1982 年 48 巻 11 号 p. 1525-1535
発行日: 1982/11/25
公開日: 2008/02/29
ジャーナル フリーAllelic frequencies of fourteen polymorphic loci were compared among chum salmon populations returning to forty-three rivers in Japan.
The study on genetic similarity revealed two major clusters of (1) Okhotsk and Nemuro and (2) East of Cape Erimo regional populations in Hokkaido and (1) northern and (2) southern regional populations both on the Pacific coast and the Japan Sea coast of Honshu. The division occurs at the middle of Iwate Prefecture on the Pacific coast and at the northern part of Niigata Prefecture on the Japan Sea coast.
The common genetic feature is still observed despite the frequent transplantations attempted to date, which suggests there is no noticeable effects of planting.抄録全体を表示PDF形式でダウンロード (682K) -
帰山 雅秀, 文谷 俊雄1982 年 48 巻 11 号 p. 1537-1544
発行日: 1982/11/25
公開日: 2008/02/29
ジャーナル フリーJuvenlie of different stages (alevin, fry and fingerling) of chum aslmon Oncorhynchus keta derived from natrual spawning and artificial propagation were captured in the Koizumi River and the Futamata River from January to June in 1980, and phasic development from fry to fingerling was examined. The phasic changes in morphology, growth mode, behavior and ecology were observed when the juvenlie grew to 4.1-6.0cm in fork length. Namely, 1) squamation was intiated at 4.1-5.0cm, 2) the specific growth rate maximized at about 5.0cm, 3) the condition factor became stable at about 9 after the juvenile grew up to 5.1-5.5cm, 4) parabolic curves indicating the relationships between ratios of head length (HL), body depth (BD) and upper jaw length (UJL) to fork length (FL) and fork length inflected at 5.3cm for HL/FL, 5.9cm for BD/FL and 5.4cm for UJL/FL, 5) most of fish migrated seaward at 4.1-6.0cm, 6) juvenile larger than 5.5cm changed their life space from pools to rapids of the rivers. Among these changes, the squamation is the most practical criterion of the phasic change from fry to fingerling.抄録全体を表示PDF形式でダウンロード (593K) -
小長谷 庸夫1982 年 48 巻 11 号 p. 1545-1550
発行日: 1982/11/25
公開日: 2008/02/29
ジャーナル フリーA new tracking method of biotelemetry is described. The apparatuses used were composed of an acoustic transmitter (pinger), three sonobuoys, wireless receivers and two timeinterval counters.The sonobuoys were desigened to relay acoustic pulses from the pinger to a base station on land by wireless. These buoys were moored several hundred meters apart so as to form a triangle on the surface of the water. A fish carring the pinger was tracked in the circumscribed circle of the triangle. The wireless signals from the buoys were caught with three receivers at the bast station. The successive positions of the fish were calculated from the differences in the received times of the signals. The results of the tests showed that this method gives good positional information. It is possible to plot the successive positions of the fish on a X-Y plotboard with a computer.抄録全体を表示PDF形式でダウンロード (597K) -
佐藤 延子, 山根 誠久, 川村 隆1982 年 48 巻 11 号 p. 1551-1557
発行日: 1982/11/25
公開日: 2008/02/29
ジャーナル フリーAn epizootic attributable to enterobacteriaceae Citrobacter freundii was observed among sunfish Mola mola in Matsushima Aquarium, Japan. During May to September, 1981, twenty-five out of twenty-nine sunfish died in the aquarium. Almost all the infected sunfish showed the same characteristic pathological changes, that is, hemorrhagic exanthema upheaved from skin surface and multiple lipoid granuloma in the kidney. Citrobacter freundii was isolated from the various organs examined. Pure cultures were obtained from kidney granuloma and the spleen, the results indicating that Citrobacter freundii was the most likely pathogen. Bacteriological examination of the sea water circulating in the aquarium showed high levels of various entero-bacteriaceae, such as Klebsiella, Enterobacter and proteus, in addition to Citrobacter freundii. These findings suggested the urine-water-oral transmission route within the aquarium. Several antibiotics were administered but none were effective in treating the infected sunfish. However, after disinfecting the sea water with chlorine sunfish infection with Citrobacter freundii terminated. The unique pathogenecity of Citrobacter freundii to sunfish will be discussed regarding host range in sea water.抄録全体を表示PDF形式でダウンロード (1203K) -
辻 祥子, 青山 恒雄1982 年 48 巻 11 号 p. 1559-1562
発行日: 1982/11/25
公開日: 2008/02/29
ジャーナル フリーThe presence of daily growth increments, initiated just after hatchimg, are described in the otoliths of reared Japanese red sea bream Pagrus major (TEMMINCK et SCHLEGEL). Counts deviate within the range of 30% of the mean and the coefficient of deviation varies 6% to 10%. Since there is no significant correlation between the number of increments and the standard length within age groups, it may be concluded that formation of daily increments in the otolith is indep ndent of the growth rate of fish. There is no singnificant difference between counts of increments made on right and left otoliths. Daily increments in the otoliths of field-collected larvae are clearer and easier to count than those of reared ones. Since the main cause of counting error results from the diffculty in distinguishing daily increments accurately. the error in ageing field-collected samples may ne smaller than in ageing reared ones.抄録全体を表示PDF形式でダウンロード (506K) -
清水 昭男, 羽生 功1982 年 48 巻 11 号 p. 1563-1568
発行日: 1982/11/25
公開日: 2008/02/29
ジャーナル フリーSpring-spawning bitterling Acheilognathus tabira were kept under several combinations of photoperiod and water temperature regimes at different phases of their annual reproductive cycle. In early spring, the gonads developed rapidly under warm temperature (16°C) regardless of photo-period. In early summer, gonads intensely regressed under high temperature (26-30°C), also regardless of photoperiod. In early autumn, the first phase of gonadal recrudescence, i.e. forma-tion of spermatocytes and accumulation of yolk vesicles, proceeded under lower temperature (22°C-16L), regardless of photoperiod. In a mid autumn experiment, the second phase of gonadal recrudescencd, i.e. active spermatogenesis and accumulation of yolk globules, could be commenced only by warm temperature-long day (22°C-16L) treatment.
Thus, it is concluded that the spawning period of A. tabira is initiated by the rising of water temperature in spring and is terminated by the high temperature in summer. The first phase of gonadal recrudescence is induced by the lowering temperature in autumn. In this season, how-ever, the second phase of gonadal recrudescence is prevented by the short daylength although the temperature is permissive. Seasonal changes in photoperiodism are also suggested.抄録全体を表示PDF形式でダウンロード (439K) -
芳我 幸雄1982 年 48 巻 11 号 p. 1569-1572
発行日: 1982/11/25
公開日: 2008/02/29
ジャーナル フリーA possibility of preservation of fertilized eggs of rainbow trout Salmo gairdneri was examined at-7°C-20°C for 3 hours. The results obtained are summarized as follows;
1. Eggs after eyed stage had higher tolerance for subzero temperature expisure than those of before eyed stage.
2. Suitable concentration of dimethyl sulfoxide (DMSO) as organic cryoprotectant was 1.4-2.1M.
3. In-7°C exposure, about95%of hatching rate was obtained by using10%calf serum and mineral saltion besides DMSO as cryoprotectants, while14%of hatching rate was obtained in -12°C exposure.抄録全体を表示PDF形式でダウンロード (228K) -
松山 倫也, 松浦 修平1982 年 48 巻 11 号 p. 1573-1580
発行日: 1982/11/25
公開日: 2008/02/29
ジャーナル フリーThe process of oocyte maturation and the seasonal changes of ovarian development were observed with the amphidromous type Ayu captured at Chikugo River, Fukuoka Prefecture, Japan.
In the oocytes of the fish, three kinds of the vitelline elements, i. e. yolk vesicles, yolk globules and oil droplets appeared in this order. In the mature eggs, yolk globules never formed a massed yolk in spite of increasing in size. Accumulation of yolk rapidly proceeded and was completed in about three weeks. The oocytes showed the development of asynchronous type and the mature ovaries contained groups of oocytes in various maturation stages at the same time. Therefore the ovarian maturity of the fish is adequately represented by the histological maturation stage of the oocytes that have the modal value of diameter in the first batch (the most advanced group of oocytes). After the first batch was ovulated, the second batch developed up to secondary yolk globule stage at most. But long without ovulation of the second batch.抄録全体を表示PDF形式でダウンロード (1542K) -
南 卓志1982 年 48 巻 11 号 p. 1581-1588
発行日: 1982/11/25
公開日: 2008/02/29
ジャーナル フリーThe early life history of a flounder Paralichthys olivaceus (TEMMINCK et SCHLEGEL)was studied in the western Wakasa Bay, the Japan Sea.
General morphology and characteristics of the larvae and juvenile ranging from 3.25mm to 13.20mm BL, were described. The characteristic features of this fish in early larval stages were elongations of the first 5 dorsal fin rays and distribution patterns of melanophores on the body surface.
There is some variation in relationship between stage and boby length in larvae, especially at the late metamorphosis stage. It may mean the variation in the size at settlement.
Judging from records of occurrence of early larvae, actual spawning may occur in the western Wakasa Bay during a relative long period from March to May.
Early postlarvae were caught mainly off the coast of Wakasa Bay, and late postlarvae were caught mainly in the nearshore regions. In the period of pelagic larval stage, an inshore movement must have taken place. Early juveniles were captured in the shallower water of the estuary of Yura River, and this area may be their nursery ground.
Annual occurrence of larval occurrence showed remarkable differences from year to year.
Analyses of the gut content showed that the food items were copepod nauplii in early postlarvae, Oikopleura spp. in late postlarvae, and copepods and mysids in early juveniles.
Some considerations on the daily food intake of the larvae under natural conditions were discussed.抄録全体を表示PDF形式でダウンロード (642K) -
野村 節三, 斎藤 博司1982 年 48 巻 11 号 p. 1589-1597
発行日: 1982/11/25
公開日: 2008/02/29
ジャーナル フリーSeveral pathogenic bacteria isolated from furunculosis infected rainbow trouts Salmo gairdnerii were identified with Aeromonas salmonicida. The organism has been shown to produce relatively large quantities of hemolytic toxin in its culture medium under aerobic condition. The toxin in the supernatant fluid was cytolytic for erythrocytes of sheep and freshwater salmonids in vitro, and the erythrocytes of Japanese common char Salvelinus leucomaenis were the most sensitive, among freshwater salmonids, to the toxin. The production of hemolytic toxin was stimulated by the addition of enzymatic hydrolyzates of protein as nitrogen and carbon sources, however it was suppressed with glucose or sucrose. Bivalent metal ions (Ca2+, Co2+ and Mn2+) and phos-phate ion (HPO42-) were also required for both growth and toxin production. The optimum pH range for toxin production was from 7.5 to 8.0, and the optimum temperature was around 20°C. The toxin production occurred during the stationary phase of growth. The hemolytic toxin in the supernatant fluid was rapidly inactivated at 60°C, and is most stable at pH 8.0. These results indicate that the hemolytic toxin is a thermolabile exotoxin, and some kinds of amino acids, bivalent metal ions and phosphate ion play an important role in hemolytic toxin production of the organism.抄録全体を表示PDF形式でダウンロード (603K) -
老田 哲也, 河野 薫, 片江 宏巳, 中村 信一, 関根 豊, 橋本 昌久1982 年 48 巻 11 号 p. 1599-1608
発行日: 1982/11/25
公開日: 2008/02/29
ジャーナル フリーLevels of an antibacterial agent, piromidic acid (PA), and its metabolites (2-OHPA and 3-OHPA) in eel tissues after oral administration were determined by high-performance liquid chromatography, and following results were obtained.
1) After single administration of 40mg/kg of PA, both the unchanged drug and metabolites were found in plasma, liver, kidney spleen, and muscle with the order of PA, 2-OHPA, and 3-OHPA. The concentration of PA in tissues reached peak levels of 12-18 μg/ml or g 3-6 hours after dosing, followed by a gradual decrease with half-lives of 4-7 hours and went below the assay limit (0.02 μg/ml or g) in 4 days. Whereas the concentration of the metabolites reached peak levels of 4.1-9.1 μg/ml or g for 2-OHPA and 1.4-4.7 μg/ml or g for 3-OHPA 6-24 hours after dosing, followed by a relatively slow decrease with half-lives of 8-18 hours. Total levels of PA and metabolites in kidney and liver were one and a half times as high as the level in plasma, while the level in muscle was one half of that in plasma.
2) After 7-consecutive dosing of 40mg/kg per day of PA, the concentration of the unchanged drug and metabolites reached peak levels of 8.8-16 μg/ml or g for PA, 7.1-12 μg/ml or g for 2-OHPA, and 5.5-7.6 μg/ml or g for 3-OHPA, mostly 6 hours after the final dosing and total levels went below the assay limit within 11 days.
3) In the case of the treament of fish diseases with PA, PA and the metabolites would be eliminated from tissues within 6 days after single administration or 11 days after 7-consecutive administration.抄録全体を表示PDF形式でダウンロード (502K) -
石井 紀明1982 年 48 巻 11 号 p. 1609-1615
発行日: 1982/11/25
公開日: 2008/02/29
ジャーナル フリーThe chemical speciation of tin in marine plants, waters, and sediments was carried out by means of an atomic absorption spectrometer with a hydride generator.
Marine algae in san Diego Bay had several times higher concentrations of inorganic and organic tins than those in Mission Bay. Little tin was present in the supernatant of the homegenate of Ulva sp.. The concentration of tin in the crude residue was very low in comparison with that from the residue digested by wet ashing. Over two-thirds of the dissolved forms of tin in fresh and dried algal samples was found to be inorganic.
The results of tin-uptake and excretion excretion experiments with five species suggested that marine macro algae lack the ability to substitute chloride for methyl. It was not chear whether organotin compounds were degraded by marine algae or not, because the reagents of organotin compounds used in this investigation were not absolutely pure. Algal concentration factors for five species of tin tended to decrease in the following order:
SnCl4>CH3SnCl3>(CH3)2SnCl2>(CH3)8SnCl>(CH3)4Sn抄録全体を表示PDF形式でダウンロード (441K) -
森田 耕治, 古市 政幸, 米 康夫1982 年 48 巻 11 号 p. 1617-1620
発行日: 1982/11/25
公開日: 2008/02/29
ジャーナル フリーIn order to investigate the nutritive effect of carboxymethlcellulose (CMC), groups of red seabream Chrysophrys major were fed on the 10%, 20%, or 30% dextrin-containing control diets with-out CMC and on the diets which were supplemented with CMC at a level of 3%, 6%, 9%, or 12% to each control diet. The supplement of CMC improved the growth and feed effficiency, and the optimum level of CMC in diets increased with the increase of dietary dextrin.抄録全体を表示PDF形式でダウンロード (228K) -
奥谷 康一1982 年 48 巻 11 号 p. 1621-1625
発行日: 1982/11/25
公開日: 2008/02/29
ジャーナル フリーMarine bacterium NAM-1 strain produced a extracellular polysaccharide on sea water agar medium containing sucrose. The homogeneous, neutral and high molecular weight polysaccharides contain only fructose as the constituent. The structure of this polysaccharide has been investigated by using the techniques of methylation analysis, periodate oxidation and 13C-NMR spectroscopy.
The principal feature of the 13C-NNR spectrum consists in the six intense signals which have been completely assigned. It is evident from the 13C-NMR analysis that sugar residues of this polysaccharide are fructofuranosidic and β-linked. Methylation analysis indicates that NAM-1 is composed of fructofuranosyl repeating units having twenty four (2-6) linked sugar residues, one branching point and one terminal.抄録全体を表示PDF形式でダウンロード (369K) -
福田 裕, 柞木田 善治, 川村 満, 掛端 甲一, 新井 健一1982 年 48 巻 11 号 p. 1627-1632
発行日: 1982/11/25
公開日: 2008/02/29
ジャーナル フリーDuring freezing and subsequent frozen storage of fish muscle, the denaturation of myofibrillar protein was studied by measuring the inactivation of its Ca-ATRase activity
Minced muscle of chub mackerel (and sardine) was initially frozen at -20, -30, or -40°C for 20 h and stored at -20, -30, or -40°C for 8 months; the denaturation of myofibrillar protein becameless for lower temperatures of storage, regardless of the initial freezing temperature
The whole fish of chub mackerel was frozen at -40°C for 20h and stored at -20, -30, or -40°C for 4 months. Frozen surimi was then prepared and its myofibrillar protein and kamoboko forming ability were evaluated. The quality of surimi was found to be improved for lower temperatures of frozen storage.
When the minced muscle (A) of chub mackerel, which has previously been treated with 0.3% NaCl twice (B) or with 0.5% NaHCO3 followed by 0.3% NaCl (C), was frozen at -40°C for 20h and stored at -20, -30, or -40°C for 4 months, a similar relationship between the temperature and the denaturation of myofibrillar protein was also recognized, but the extent of denaturation of (B) was considerably larger than that of (C). The addition of 5% sucrose to the treated minced muscle effectively prevented its denaturation by frozen storage.抄録全体を表示PDF形式でダウンロード (530K) -
村井 武四, 平沢 康弘, 秋山 敏男, 能勢 健嗣1982 年 48 巻 11 号 p. 1633-1637
発行日: 1982/11/25
公開日: 2008/02/29
ジャーナル フリーFree ninhydrin reactive substances in the white muscle, dark muscle, and liver of cultured and wild bluefin tuna juvenile (4 fish from both groups) were compared. The total contents of these substances (mg/100g dried tissue) of cultured fish were strikingly lower (less than 60%) in the liver and slightly lower in the white and dark muscles than those in the corresponding tissue of wild fish. However, based on the unit weight of crude protein (mg/g protein), those in the respective tissues became higher in cultures fish than in wild fish due to the higher fat and lower protein levels of cultured fish. Levels of free ninhydrin reactive substances in the liver of both cultured and wild fish were approximately three-fold higher than those in the muscles. In both cultured and wild fish, the outstanding substance in the white muscle and dark muscle were histidine (approximately 75% of the total) and taurine (43-48%), respectively; outstanding substances in the liver were taurine and glycine, but their percentages were less than 16%. Anserine was not detected in any fish used. In all the tissues tested, percentages of glutamine form cultured fish were higher than those from wild fish, without any difference in glutamic acid level. But percentages of sarcosine, valine, methionine, threonine, phenylalanine, and β-amino-iso-butylic acid were higher in wild fish. In these substances, sarcosnie and β-amino-iso-butylicacid were not detected either in the white or the dark muscle of cultured fish.抄録全体を表示PDF形式でダウンロード (364K) -
中村 良一, 中原 元和, 鈴木 讓, 上田 泰司1982 年 48 巻 11 号 p. 1639-1644
発行日: 1982/11/25
公開日: 2008/02/29
ジャーナル フリーAlthough contamination of the abalone by radioactive cobalt is caused by its accumulation througy the 2 intake pathways (from sea water and from food algae), the contribution of each pathway to the total accumulation of the element remains unknown. While, the effect of chemical forms of the element is not solved yet. Therefore, we examined the uptake of cyanocobalamin (57Co) or ionic cobalt (60Co) by the abalone from sea water and from 3 species of marine algae Ulva pertusa, Eisenia bicyclis and Chondrus ocellatus. The excretion was also examined.
The abalone accumulated cyanocobalamin (57Co) from sea water approximately 5 times more than ionic cobalt (60Co) at the equilibrium and also it absorbed cyanocobalamin (57Co) 6-16 times more than ionic cobalt (60Co) from the food algae. Cyanocobalamin (57Co) stayed in the abalone a bount 2 times longer than ionic cobalt (60Co). Whereas, the abalone accumulated much more cobalt in both chemical forms from sea water than from food algae except Ulva pertusa. Therefore, it was concluded that when the abalone lived mainly on Eisenia bicyclis which was its favorite food, the influence of food on the accumulation of radioactive cobalt by the abalone coule be negligible.抄録全体を表示PDF形式でダウンロード (401K) -
柳本 正勝, 小林 登史夫, 石田 信昭1982 年 48 巻 11 号 p. 1645-1649
発行日: 1982/11/25
公開日: 2008/02/29
ジャーナル フリーThe agitation method, which was proposed for the de-carapace treatment of Antarctic krill Euphausia superba, is applied for the separation of head and viscera from small sized fish and shrimp. Agitation tests were carried out by mixing 1kg of samplesin 50-ι vessel; the main parameters were agitation speed and treating time. In the cases of shrimp (TENAGAEBI in Japanese) Macrobrachium nipponese and crucian carp Carassius carassius, more than 95% of the samples were successfully processed. The object was products whose head and viscera were satisfactorily separated without losing theirmeat. Optimum treating time was 2 minutes while optimum agita-tion speeds were 250 rpm in the case of shrimp and 350 rpm in the case of crucian carp. These results showed that the agitation method is based on the principle of ftgue destruction, as dis-cussed in a previous paper. Horse mackerel Trachurus japonicus did not show such a good result, and rather bad results were obtained for red sen bream Chrysophrys major. It was observed that these bad results were due to the impellers hitting thefish bodies.抄録全体を表示PDF形式でダウンロード (2101K) -
田中 淑人, 山本 任, 片山 輝久1982 年 48 巻 11 号 p. 1651-1655
発行日: 1982/11/25
公開日: 2008/02/29
ジャーナル フリーTwo nocel cis aromatic carotenids, isorenieracistene and renieracistene, have been isolated from a sea sponge Tethya amamensis. The strucres 7-cis-φ, φ-carotene for isorenieracistene and 7-cis-φ, Χ-carotene for renieracistene were proposed on the bais of their spectral data and iodinecatalyzed photoisomerization.抄録全体を表示PDF形式でダウンロード (581K) -
和田 俊, 高田 誠, 小泉 千秋1982 年 48 巻 11 号 p. 1657-1661
発行日: 1982/11/25
公開日: 2008/02/29
ジャーナル フリーA gas liquid chromatographic method for the quantitative analysis of histamine (Hm) in marine food products is described. Hm in marine food products was extracted with trichloro-acetic acid and isolated using ion exchange column chromatography (Amberlite CG-50). The Hm obtained was converted into Na-heptafluorobutyryl derivative with heptafluorobutyric anhydried in ethylacetate at 90°C (30min). After evaporating the reagent, the Hm derivative was dissolved in ethylacetate and washed with water to remove the salts derived from the eluate in ion exchange column chromatography. The Hm derivative after evaporating the ethylacetate, was further converted into Na-heptafluorobutyryl-Nγ-ethoxycarbonylhistamine with ethyl chloroformate in ethylacetate at 35°C (30min)and then subjected to gas liquid chromatography. n-Octadecane was used as an internal standard. The calibration curve obtained was a straight line within the Hm range from 10μg to 100μg Therefore, the quantitative limjit of Hm was 0.5mg/100g sample when 2g of sample were subjected to determination with this method. 104-113% of Hm added to fresh mackerel flesh were recovered by this nebthod to determination with this method.
The Hm contents of several kinds of commercial fish products were determined by this method. A high content of Hm was observed in the following fish products: Sardine in rice-bran, 144mg/100g and 36.6mg/100g; Salted and dried sardine in round, 83.9mg/100g and 61.3mg/100g.抄録全体を表示PDF形式でダウンロード (292K) -
木俣 誠1982 年 48 巻 11 号 p. 1663-1671
発行日: 1982/11/25
公開日: 2008/02/29
ジャーナル フリーThe eight stages from fertilized egg to swim fry in the half beak Hemiramphus sajori were determined from changes of chemical composition during early development.
1. Wet weight of the egg was not very much changed before hatching and wet weight of the larva increased gradually until the end of yolk sac stage after hatching.
2. 0.238mg Protein was contained in the fertilized egg. There was more consumed after hatching than before hatching.
3. 73.2μg lipid was contained in the fertillzed egg. There was more consumed before hatching than after hatching.
4. Phospho-lipids were mainly consumed during developmental stages before hatching and neutral lipids were mainly used after hatching.
5. The amount of Carbohydrate contained was 33.8μg, 1.4%in wet material. This value was 7 times as much as much as the carbohydrate contents of rainbow trout and pacific sardine. However, there was no decrease in carbohydrats of the larva after hatching. Therefore carbohydrate contents were very important as an energy source for formation of the embryo in the before-eyed egg stage of the half beak.
6. The average calorie value of the fertilized egg was 4.726 kcal per gram dry wight This value was lower because the half beak egg contained more carbohydrate of the lower calorie/unit type than rainbow trout and pacific sardine.
7. The number of calories consumed per a day in the before-eyed egg stage was larger than in any other stages, that in the yolk sac stage was second.抄録全体を表示PDF形式でダウンロード (572K) -
林 哲仁, 清水 譲, Alan W. WHITE1982 年 48 巻 11 号 p. 1673
発行日: 1982/11/25
公開日: 2008/02/29
ジャーナル フリーPDF形式でダウンロード (117K) -
水野 治夫, 磯 直道, 斎藤 隆英, 野沢 孝志1982 年 48 巻 11 号 p. 1675
発行日: 1982/11/25
公開日: 2008/02/29
ジャーナル フリーPDF形式でダウンロード (93K)
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