著者

瀬崎 啓次郎 小林 弘

出版者

日本水産學會

雑誌

日本水産學會誌 (ISSN:00215392)

巻号頁・発行日

vol.44, no.8, pp.851-854, 1978-08 (Released:2011-03-05)

著者

落合 芳博 渡部 終五 橋本 周久 成田 弘子 浮島 美之 奈良 正人

出版者

日本水産學會

雑誌

日本水産学会誌 (ISSN:00215392)

巻号頁・発行日

vol.50, no.4, pp.721-725, 1984

被引用文献数

6

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Attempts were made to identify biochemically two gampylid fishes, escolar ("aburasokomutsu") <i>Lepidocybuum Flavobrunneum</i> and castor oil fish ("baramutsu") Ruvettus pretiosus, whose muscles contain a large amount of wax esters and hence may casuse a food poisoning when ingested. Myogen fractions were prepared from the ordinary muscles of both fishes as well as various fishes, and subjected to polyacrylamide gel electrophoresis, followed by staining with Coomassie brilliant bule for protein and with reagents for lactate and malate dehydrogenase activities. Results showed that the protein pattern is species-specific enougy to distinguish the two gempylid fishes from any of the other fishes tested. The pattern of either dehydrogenase was found to be less species-specific. However, simultaneous analyses of MDH and protein patterns faciliated the identification of buth gempylid fishes. Cellulose acetate membrane electrophophoresis was also found to be applicable for this purpose, though less satisfactorily.

著者

西岡 不二男 町田 律 志水 寛

出版者

日本水産學會

雑誌

日本水産学会誌 (ISSN:00215392)

巻号頁・発行日

vol.49, no.8, pp.1233-1238, 1983

被引用文献数

3 11

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The dolphinfish myosin (purity 92%) was compared with respect to the kamaboko-forming ability atomyosin (myosin moiety 70%), myofibrils (myosin moiety 72%) and minced meat (myosin content 32%) prepared from the same specie. Kamaboko jelly from the dolphinfish myosin was diferet with regard to others, in that it was transparent, light blueish and much more elasticl The strength of myosin jelly was 3.0, 2.6 and 44 times more than that of actomyosin, myofibrils and minced meat jelly having the same moisture content (86%), showing that the kamaboka-forming ability of those materials are solely dependent on their myosin moiety content, CM. It was found that the tensile strength of the jellies can be expresed as a function of C_M, S=k•C_Mⁿ (k, n are constants), while hte breaking extension is decreased with the concentration of moieties other than myosin.

著者

紫加田 知幸 櫻田 清成 城本 祐助 生地 暢 吉田 誠 大和田 紘一

出版者

日本水産學會

雑誌

日本水産學會誌 (ISSN:00215392)

巻号頁・発行日

vol.76, no.1, pp.34-45, 2010-01 (Released:2011-03-28)

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室内において、八代海における主要な植物プランクトンの異なる水温、塩分および光強度条件下における増殖特性を調べ、現場において各種の動態とそれらの環境条件との関係を調査した。水温および塩分に対する増殖応答特性は種によって異なっていたが、増殖のために要求する光強度はいずれの種でも大差なく、ほとんどの供試生物の増殖速度は80μmol/m2/sで飽和した。現場における季節的な種変遷パターンは水温および塩分の変化と、短期的な動態は水中光の強度の変化と同調していた。

著者

舩津 保浩 深見 克哉 近藤 秀裕 渡部 終五

出版者

日本水産學會

雑誌

日本水産学会誌 (ISSN:00215392)

巻号頁・発行日

vol.71, no.4, pp.611-617, 2005-07-15

被引用文献数

1 10

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醤油麹を用いて調製したマルソウダ魚醤油のもろみから分離した <i>Staphyrococcus nepalensis</i> を黒作りイカ塩辛に添加し,4℃で 30 日間貯蔵後の呈味成分と揮発性成分を HPLC および GC/MS 分析した。その結果,本菌を添加した黒作りと無添加の黒作りの呈味成分含量には差異がみられなかったが,揮発性有機酸類,アルデヒド類,含硫化合物,アルコール類およびエステル類の組成は両者で異なり,二硫化ジメチルは前者からは検出されなかった。官能評価では,前者の魚臭さや不快なイカの臭いは後者のそれよりも弱かった。<br>

著者

西田 睦 澤志 泰正 西島 信昇 東 幹夫 藤本 治彦

出版者

日本水産學會

雑誌

日本水産学会誌 (ISSN:00215392)

巻号頁・発行日

vol.58, no.2, pp.199-206, 1992

被引用文献数

17 24

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The distribution and abundance of an endangered subspecies of the ayu <i>Plecoglossus altivelis ryukyuensis</i> was determined on the three major islands, Amami-oshima, Tokunoshima, and Okinawa Islands, in 1986. The fish was observed only in five streams in the southern part of Amami-oshima Island. Among these five streams, the majority of fish were found in the Yakugachi River. While the number of fish in this particular stream was approximately 3.5&times;10⁴, in all other streams the densities were much lower, and we therefore conclude that this subspecies is threatened and some attempts should be made for conservation of this fish.

著者

西田 睦 澤志 泰正 西島 信昇

出版者

日本水産學會

巻号頁・発行日

vol.58, no.2, pp.199-206, 1992 (Released:2011-03-05)

著者

井口 恵一朗

出版者

日本水産學會

雑誌

日本水産學會誌 = Bulletin of the Japanese Society of Scientific Fisheries (ISSN:00215392)

巻号頁・発行日

vol.77, no.3, pp.356-359, 2011-05-15

参考文献数

37

被引用文献数

4

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近頃のアユ資源は,小刻みな年変動を繰り返しながらも,全体としては減少傾向を突き進んでいる。積年の種苗放流にもかかわらず,資源水準の低迷から脱出できない現実がある。問題の背景には,現行の増殖事業における実効性の乏しさがうかがわれる。これまでに私は,アユの生活史のさまざまな局面について調査する機会を得てきた。本稿では,アユ資源の復調を願う生態学的な視点から,本種の持続可能性について論じてみたい。

著者

坂野 博之 淀 太我 HIROYUKI SAKANO TAIGA YODO (独)水産総合研究センター中央水産研究所 (独)水産総合研究センター中央水産研究所 National Research Institute of Fisheries Science Fisheries Research Agency National Research Institute of Fisheries Science Fisheries Research Agency

出版者

日本水産學會

雑誌

日本水産学会誌 (ISSN:00215392)

巻号頁・発行日

vol.70, no.3, pp.313-317, 2004-05-15

参考文献数

29

被引用文献数

3 6

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ブルーギルの食性と動物プランクトンに対する餌選択性を明らかにするため, 二つのため池において動物プランクトン種組成とブルーギルの胃内容物組成を明らかにした。両池のブルーギルの胃内容物には動物プランクトンが頻繁に認められた。二つのため池に共通して生息するオナガケンミジンコは一方の池で選択的に摂餌されていたものの, 他方の池ではほとんど摂餌されておらずハリナガミジンコが選択的に摂餌されていた。

著者

濱野 龍夫 松浦 修平

出版者

日本水産學會

雑誌

日本水産学会誌 (ISSN:00215392)

巻号頁・発行日

vol.52, no.5, pp.787-794, 1986

被引用文献数

3 11

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Examination of the stomach contents of the Japanese mantis shrimp <i>Oratosguilla oratoria</i> showed that this species is a very intensive predator on the Macrura which is a principal component of the benthic megalofaunal community. Thus, the mantis shrimp, by feeding largely on the Macrura, may have a major influence on this community structure in Hakata Bay. The shrimp was also revealed to be an intensive predator on the Pelecypoda despite underestimation of preda-tion intensity, based on the stomach contents, because of its shell-smashing behaviour. Further-more, this study showed that many Macrura were captured during September and November by the mantis shrimp and that female shrimp of reproductive sizes also consume many Pelecypoda, As a prey species, mantis shrimp themselves were found infrequently in the digestive tracts of other predators.

著者

阪本 俊雄

出版者

日本水産學會

雑誌

日本水産学会誌 (ISSN:00215392)

巻号頁・発行日

vol.42, no.1, pp.1-11, 1976

被引用文献数

2 5

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The relationship between age and growth of the ribbon fish, <i>Trichiurus lepturus </i> L_INNE, which is most common among the bottom fishes in the Kii Channel in recent yearss, have been studied. The study was based on 3, 739 specimens of otoliths and asize composition analysis of 10, 591 specimens from randomly sampled fish, caught by small type trawlers between April, 1972 and August, 1974.<br> The results are summarized as follows:<br> 1) Ribbon fish schools in the Kii Channel usually consist of fishes from two broods, the spring-born and the autumn-born.<br> 2) The annual ring marks on otolith are formed in the spawning season in spring from April to June<br> 3) Hence the radius of the first ring (<i>r</i>₁) in the autumn-born group are smaller than that of the spring-born group. Thus, by the size of the first ring radius, the ribbon fish schools are divided into two groups of spring-born (<i>r</i>₁&ge;2.3mm) and au-tumn-born (<i>r</i>₁<2.3mm).<br> 4) The growth equation for spring-born group is estimated as follows;<i>BL</i>₁=568.3{1-exp[-0.261(<i>t</i>+0.6435)]}<br> Because of inadequate number of specimens for the autumn-born group, the growth equation is not estimated here.<br> 5) The calculated values of body length from thsi equation are larger by one age than those body lengths discribed in the former studies.

著者

日本水産學會 [編] = the Japanese Society of Scientific Fisheries

出版者

日本水産學會

巻号頁・発行日

1932

著者

和田 俊 小泉 千秋 滝口 明秀 野中 順三九

出版者

日本水産學會

雑誌

日本水産学会誌 (ISSN:00215392)

巻号頁・発行日

vol.45, no.5, pp.611-614, 1979

被引用文献数

15

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The triglyceride composition of lipids of black cod, <i>Erilepis zonifer</i>, was investigated by highperformance liquid chromatography (HPLC) and gas liquid chromatography (GLC). The fatty acid composition of the triglyceride was also analyzed by GLC.<br> The fatty acid composition of the triglyceride was characterized by a high ratio of monoenoic acid content (71.7%) to polyenoic acid content (2.3%).<br> In HPLC, the triglycerides were separated into seven fractions on the basis of their partition numbers. Each of these collected fractions gave three to eight peaks in the GLC chromatograms according to the carbon number of the triglyceride.<br> From these results, it was found that the major triglycerides of black cod lipid are those of C-52 with 2 double bonds, C-54 with 2 double bonds, C-54 with 3 double bonds, C-56 with 2 double bonds, C-56 with 3 double bonds, and C-58 with 3 double bonds, amounting to 54.2% in all.

著者

桑原 昭彦 鈴木 重喜

出版者

日本水産學會

雑誌

日本水産学会誌 (ISSN:00215392)

巻号頁・発行日

vol.49, no.10, pp.1499-1506, 1983

被引用文献数

1

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This paper describes the vertical and horizontal distributions, and feeding habits of a sole <i>Heteromycteris japonicus</i> (TEMMINCK et SCHLEGEL) larvae, collected in the western Wakasa Bay, Japan Sea, from June to September 1981.<br> The larvae <i>H. japonicus</i> distributed mainly in the waters between 25m and 50m depth. Small size larvae of less than 3.0mm BL commonly appeared at Sts. A, B and C, and large size larvae of more than 4.0mm BL abundantly at St. A. It is suggested that the larvae shift the habitual area from &ldquo;offshore-coastal area&rdquo; to &ldquo;coastal area&rdquo; as growth of the larvae proceeded.<br> The larvae of less than 4.0mm BL fed mostly on <i>Microsetella norvegica</i> and copepod nauplii. Most of the same size larvae caught at St. A ate <i>M. norvegica</i>, but at St. C. larvae fed on <i>M. norvegica</i> and copepod nauplii. Percentage of larvae carrying food in their alimentary canal was high in those collected at St. A and low at St. C. The larvae of more than 5.0mm BL consumed mainly <i>Penilia avirostris, Podon</i> sp. and <i>M. norvegica.</i><br> According to these findings on feeding habits of the larvae of <i>H. japonicus</i> it is estimated that the offshore area is umsatisfactory for survival of the larvae, compared with the coastal area.

著者

南 卓志

出版者

日本水産學會

雑誌

日本水産学会誌 (ISSN:00215392)

巻号頁・発行日

vol.47, no.7, pp.857-862, 1981

被引用文献数

2 4

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The early life history of a sole <i>Heteromycteris japonicus</i> (Temminck et Schlegel) was studied in the western Wakasa Bay and adjacent waters, the Japan Sea.<br> General morphology of the larvae and juveniles ranging from 2.70 mm to 6.95 mm BL, was described. The characteristic features of this fish in early larval stages were distributional patterns of melanophores on the body surface, forming rows along the dorsal body contour extending from the head to tail and along ventral body contour from the abdominal region to the tail.<br> Eggs, postlarvae and juveniles were caught mainly in Yura River estuary and Maizuru Bay, and these areas may be their spawning and nursery ground.<br> Judging from gonad index and occurrence of eggs and larvae, actual spawning may occur in the western Wakasa Bay during the period from May to July.<br> Food items of the gut contents were as follows: copepods nauplii and small copepods in early larvae, copepods and crustacean larvae in metamorphosis, and amphipods and amphipods and copeopods in early juveniles.

著者

立原 一憲 木村 清朗

出版者

日本水産學會

雑誌

日本水産学会誌 (ISSN:00215392)

巻号頁・発行日

vol.54, no.7, pp.1107-1113, 1988

被引用文献数

1 4

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A study on the life history of land-locked ayu <i>Plecoglossus altivelis</i> was made in Lake Ikeda, Kagoshima Prefecture, from 1981 to 1986.<br>Like amphidromous ayu, the life span of the land-locked fish in this lake is usually only one year and most of them die after spawning in autumn. However, a few individuals of land-locked ayu passing over the second winter are found in the lake.<br>The specimens counting 7, 810 of ayu in the lake were collected during this study and 73 of them were thought to be the over-wintered ones, because they had a conspicuous spawning mark on the embeded part of their scales. None of 0⁺ fish had any such scales. The amounts of fat tissue around viscera of mature ayu decreased in the spawning season from early October to late Novermber. Also, the condition factor of ayu caught in November showed very wide range from 0.6 to 1.7. The fish whose condition factor was less than 0.9 had exteremely shrunk stomach without any food, whereas the fish of more than 1.3 in condition factor had normal stomach containing a small amounts of diatoms and blue-green algae. All specimens of 1₊ fish, which were collected after December, had recovered their fat tissue and begun to grow again. Thus, it is suggested that the survival of ayu after spawning season depends on the degree of stomach shrinkage and adequate intake of food. Some of them grew 150mm in standard length or more by the next autumn.<br>The specimens of mature 1⁺ fish which were caught at a spawning ground in October suggests that some of the over-wintered ayu in the lake are able to attain maturity in second spawning season.

著者

栄 研二 海野 徹也 高原 泰彦 荒井 克俊 中川 平介

出版者

日本水産學會

雑誌

日本水産学会誌 (ISSN:00215392)

巻号頁・発行日

vol.62, no.1, pp.46-50, 1996-01-15

参考文献数

14

被引用文献数

2

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Yearling ayu <i>Plecoglossus altivelis</i> collected in June and July from the Ohta River were biologically and biochemically examined in comparison with annual ayu caught in the same area.<br>All the yearling ayu were female. The yearlng ayu were different in size and skin color from the annual ayu, but not different in anatomical parameters such as hepatosomatic index, intraperitoneal fat body ratio, and gonadosomatic index. The ovaries of annual ayu were immature and included chromatin nucleolus and perinucleolus stage eggs, but those of yearling ayu consisted mostly of abortive eggs and a few chromatin nucleolus and perinucleolus stage eggs.<br>The yearling ayu had less muscle protein but more triglycerides than annual ayu. Fatty acid composition of muscle triglycerides in the yearling ayu was not different from that of the annual ayu. Low protein accumulation caused by depression of protein metabolism would affect the viability of yearling ayu after July.

著者

立原 一憲 木村 清朗

出版者

日本水産學會

巻号頁・発行日

vol.57, no.5, pp.789-795, 1991 (Released:2011-03-05)

著者

平山 和次 渡辺 剛志

出版者

日本水産學會

雑誌

日本水産学会誌 (ISSN:00215392)

巻号頁・発行日

vol.39, no.11, pp.1129-1133, 1973

被引用文献数

36

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The nutritional effect of caked yeast still living and of dried marine yeast on the rotifer, <i>Brachionus plicatilis</i>, was examined.<br> Experiments were performed by culturing many individuals in many test tubes, each containing two individuals in the experimental medium. From daily counts of eggs laid and surviving individuals, time intervals from hatching to 50% survival and to peak of fecundity, net reproduction rate, intrinsic rate of population increase and mean generation time were estimated.<br> The results obtained are summarized as follows.<br> 1. Caked yeast still living, <i>Rhodotorula sp.</i> has less nutritional effect on the rotifer than that of the marine <i>Chlorella.</i> However, it seems to be somewhat effective as food for the rotifer.<br> 2. Dried marine yeast itself has little nutritional effect on the rotifer. However, aerobical decomposition can increase the nutritional effect to some extent.<br> 3. The marine yeast added to a diluted <i>Chlorella</i> suspension was very effective as supplementary food for the rotifer. Hence, yeast may be used most effectively as a sup-plementary food in the culture medium when sufficient phytoplankton can not be supplied to the rotifer.

著者

宮崎 多恵子

出版者

日本水産學會

巻号頁・発行日

vol.59, no.3, pp.437-440, 1993 (Released:2011-03-05)