巻号一覧
40 巻, 5 号
選択された号の論文の11件中1～11を表示しています
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嶋津 武1974 年 40 巻 5 号 p. 433-438
発行日: 1974/05/25
公開日: 2008/02/29
ジャーナル フリーPseudozoogonoides ugui sp. nov. (Zoogonidae: Diphtherostominae), a new marine digenetic trematode obtained from the intestines of the dace, Tribolodon hakonensis (GÜNTHER) (Teleostei: Cyprinidae), caught in the inshore and fresh-water localities of Hokkaido has been described. It differs from the closely affined P. microacetabulum (SHULMAN-ALBOVA, 1952) ZHUKOV, 1957 in having the ventral sucker larger than the oral, the diverticle of the genital atrium, the almost sinistromarginal genital pore, and larger eggs.抄録全体を表示PDF形式でダウンロード (335K) -
温度条件とノリ芽の初期成長および形態について山内 幸児1974 年 40 巻 5 号 p. 439-446
発行日: 1974/05/25
公開日: 2008/02/29
ジャーナル フリーThe present work was carried out to gain some knowledge on the effect of temperature on the growth of sporelings of laver. The sporelings (<21μin length) of Porphyra tenera KJELLM. var. tamatsuensis MUIRA lodged on the artificial “Kuremona” fiber were grown in 500ml Erenmeyer flasks containing 200ml of enriched sea water (SWII2)+PROVASOLI'S PII metals 10ml/l) at various temperatures under 9, 000lx of fluorescent light for 10hours daily for 16days. The results observed are summerized as follows;
1) The sporelings of Porphyra can not grow, and die within 10days at temperatures higher than 30°C.
2) The sporelings do not elongate and show abnormal shapes at 25°C, although they liberate many monospores.
3) The optimal temperature for growth is about 20°C in the first stage, and the optimal temperature goes down as growth proceeds.
4) The growth is very slow at 10°C. The cell division and growth are become inhibited completely at temperatures lower than 5°C.
5) The sporelings produce many monospores at 15-25°C. The liberation of monospores is abundant at 20-25°C, and the best growth is obtained at 20°C.
6) The swelling of the cell wall of sporelings, smilar to that found in the culture at low salinities, 1)also appeared in the sporelings cultured at 25°C.抄録全体を表示PDF形式でダウンロード (1018K) -
ミミズハゼのリンパ球造血器官にみられる周年変化田村 栄光, 本間 義治1974 年 40 巻 5 号 p. 447-455
発行日: 1974/05/25
公開日: 2008/02/29
ジャーナル フリーLymphopoietic organs, such as the thymus, spleen and head kidney, of the two-year-old flat-head goby, Luciogobius guttatus, were examined histologically to elucidate the role and seasonal changes of these organs in relation to sexual maturity. The materials were collected at the gravel beaches of the Hayakawa River in the vicinity of Murakami City facing the Japan Sea throughout the year of 1972. The greatest enlargement in the parenchymatous tissue of the thymus and gonadal maturation of the present specimens occur one to two months earlier than in the specimens from Sado Island reported previously, i.e., the fish attained its spent condition by the middle of June. The cyclic pattern of the activity of the thymus was nearly identical with that of Sado Island specimens. The greatest number of small lymphocytes in the spleen, as well as in the lymphoid tissue of the head kidney, occur about one month later than in the thymus. The cyclic pattern of the changes in the size of interrenal cells is quite inverted to that of the changes in the number of small lymphocytes in the spleen and head kidney.抄録全体を表示PDF形式でダウンロード (2429K) -
麦谷 泰雄1974 年 40 巻 5 号 p. 457-463
発行日: 1974/05/25
公開日: 2008/02/29
ジャーナル フリーCalcium-45 incorporation and its turnover were examined at the level of the otolithic organs of some rainbow trout.
The intraperitoneally-injected isotope showed maximum incorporation into both the serum and otolith fluid within 3 hours after injection. Thereafter the radioactivity in the serum decreased rapidly and that in the otolith fluid gradually. On the contrary, the isotope deposited on the otolith (sagitta) increased with the lapse of time up to 72 hours, which was the final examination time. In this case a heavy accumulation was found to occur not on its lateral surface but on its medial surface where the otolith stands close to the macular cells of the sacculus. Autoradiographic visualization also confirmed such a distribution pattern of the isotope on the otolith. In addition to these facts, judging from the heavy appearance of the isotope in an autoradiogram of the medial macula, the calcium which takes part in the otolith formation seems to be supplied, at least in part, through this region. Some squamous cells of the saccular wall were also positive to radiocalcium.抄録全体を表示PDF形式でダウンロード (1683K) -
卵巣内卵数および抱卵数今 攸1974 年 40 巻 5 号 p. 465-469
発行日: 1974/05/25
公開日: 2008/02/29
ジャーナル フリーThe number of ovarian eggs and eggs held in the pleopods of the tanner crab, Chionoecetes opilio, were examined from specimens captured off Wakasa Bay of the Japan Sea. The number of eggs may be expressed as a function of the carapace width (X, mm).
(a) For mature eggs in the ovary just before spawning,
N1=3, 151X-145, 676 (correlation coefficient: r=0.9895);
(b) For fertilized eggs, held in the abdominal pouch two to four months after spawning,
N2=2, 295X-106, 597 (r=0.9902);
(c) For fertilized eggs, one to three months before hatching,
N3=1, 014X-25, 366 (r=0.9870).
As diagnosed from the parameters of these equations, the number of eggs increase with progressive enlargement of the carapace width, although the rate of increase differs with the different developmental stages of the eggs. The ratio of the number of fertilized eggs shortly before hatching to mature ovarian eggs is quite inversely proportional to the increase in carapace width.
The number of fertilized eggs shortly before hatching carried by a crab in an average carapace width of 77.4mm corresponds to about 54% of the number of mature ovarian eggs in a crab of comparable size. It is believed that about 50% of the deposited eggs may be lost during the course of embryonic development.抄録全体を表示PDF形式でダウンロード (308K) -
岡市 友利1974 年 40 巻 5 号 p. 471-478
発行日: 1974/05/25
公開日: 2008/02/29
ジャーナル フリーThe amino acid compositions of cultured phytoplanktons, suspensoids, zooplanktons and sand eel, Ammodytes personatus, collected at the Hiuchi Nada in the central part of the Seto Inland Sea, were analyzed to determine the nutritional relationships between the primary producers and the consumers. The nutritional values of proteins were compared using the essential amino acid indexes (EAA index) proposed by OSER with slight modification. Besides these, hard clam, Meretrix meretrix lusoria, and yellow tail, Seriola quinqueradiata, were chosen as standard animals.
EAA indexes of phytoplanktons and suspensoids for zooplankton and hard clam were about 85 on average, while the respective indexes for yellow tail decreased to about 70. These results indicate that phytoplanktons and suspensoids are relatively excellent as protein sources for lower consumers but not for higher ones. It may be reasonable to say that the nutritional values of marine proteins improve step by step on ingestion by animals situated in the higher ranks of the marine food chain.抄録全体を表示PDF形式でダウンロード (396K) -
江平 重男, 内山 均1974 年 40 巻 5 号 p. 479-487
発行日: 1974/05/25
公開日: 2008/02/29
ジャーナル フリーIt has been known experientially that the rate of freshness-lowering of fish varies markedly between species: that of cod being quite rapid and that of sea bream slow. These fish species were stored in ice and changes in bacterial count, TVB-N, TMA-N, ATP related compounds and K value of their muscle were examined in relation to their freshness-lowering rates and initial spoilage. Determination of ATP related compounds was performed using an autoanalyzer by a concave gradient method. The results obtained are as follows;
Using AG 1×4, Cl-type, 200-400 mesh, ATP related compounds were automatically separated in about 70 min. The time from death to the onset of initial spoilage differed considerably between cod and sea bream. IMP in cod muscle dropped remarkably within two days of ice storage, whereas that of sea bream persisted to some extent even after 16days. Consequently, with regard to K value, there was also a striking difference between cod and sea bream. The rate of IMP decomposition in Japanese red bream muscle was changed little by mixing it with an aqueous extract of Alaska pollack muscle, or the muscle itself. Changes in ATP related compounds in the muscles and the K values coincided with the freshness-lowering of fish. It was concluded that the K value could be used as one means of evaluating the freshness of fish.抄録全体を表示PDF形式でダウンロード (506K) -
カムルチーのカロテノイド成分松野 隆男, 永田 誠一, 植村 雅明1974 年 40 巻 5 号 p. 489-492
発行日: 1974/05/25
公開日: 2008/02/29
ジャーナル フリーCarotenoid pigments from the skin and fin of Chinese snakehead, Channa argus, were investigated. The principal carotenoid pigment was not lutein known to be characteristic of fresh-water fishes, but tunaxanthin (35-36%) known to be characteristic of marine fishes. Relatively high concentrations of lutein (24-27%), zeaxanthin (10-14%) and cynthiaxanthin (11-18%) were also found. In addition to these, β-carotene (3-4%), α-cryptoxanthin (2-8%), cryptoxanthin (3-5%), astacene (trace) and α-doradecin (trace) were present in small amounts.抄録全体を表示PDF形式でダウンロード (190K) -
渡辺 武, 荻野 珍吉, 輿石 裕一, 松永 富行1974 年 40 巻 5 号 p. 493-499
発行日: 1974/05/25
公開日: 2008/02/29
ジャーナル フリーRequirement of rainbow trout for essential fatty acids (EFA) was examined by feeding diets containing different levels of methyl linolenate. The shortage of EFA resulted in poor growth and low feed conversion. Methyl linolenate was superior to methyl linoleate in both enhancing growth and improving feed conversion. A diet containing 5% methyl laurate elevated the level of eicosatrienoic acid (20:3ω9) in the body lipids, while it was depressed by dietary linoleate and linolenate. Methyl linoleate elevated levels of 20:4ω6 and 22:5ω6 acids in polar lipids of the liver and methyl linolenate that of 22:6ω3 acid. From growth, feed conversion, the ratio of 20:3ω9/22:6ω3 in the polar lipids of liver and histological observation, the requirement of rainbow trout for methyl linolenate was judged to be between 0.83 and 1.66% in diet.抄録全体を表示PDF形式でダウンロード (1127K) -
市川 竜資, 大野 茂1974 年 40 巻 5 号 p. 501-508
発行日: 1974/05/25
公開日: 2008/02/29
ジャーナル フリーSkin, muscle, viscera and bone of various species of marine fishes were analysed by the neutron activation method to determine cobalt, cesium and zinc concentrations. Muscle contains much less cobalt and zinc than do the other tissues, whereas cesium is distributed rather uniformly in all of these tissues. The soft part of the short-necked clam showed much higher concentrations of the three elements than did fish muscle. Cobalt and zinc levels in shrimp (soft part and carapace), sea urchin (ovary) and sea cucumber (whole body) are higher than those in fish muscle, but the cesium level in these animals is somewhat lower than in any fish tissues. The concentration factors of cobalt, cesium and zinc were calculated for various tissues of animals by using the average concentrarion of the elements in sea water. Values of concentration factors for the animals analysed are in the range of 10 for cesium, 102 for cobalt and 103 for zinc with some exceptions.抄録全体を表示PDF形式でダウンロード (400K) -
鄭 森雄, 羅 秀婉1974 年 40 巻 5 号 p. 509
発行日: 1974/05/25
公開日: 2008/02/29
ジャーナル フリーPDF形式でダウンロード (82K)
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