Kenichi Wakayama, Y. Fujimori, K. Itaya, Osamu Murakami, T. Miura
Fishing experiments were carried out in Ishikari Bay, Hokkaido using a bottom gillnet with eight different mesh sizes to estimate the mesh selectivity for pointhead flounder Cleisthenes pinetorum. A total of 957 pointhead flounder were caught. The SELECT analysis with maximum likelihood method was used to fit the different functional models, the normal, lognormal, and bi-normal model. The catch data except for entangling catch was used for calculation. The bi-normal model was found to fit the data best. For the selectivity curve on the bi-normal model, the relative length (the ratio of fish length to mesh size) with the maximum efficiency was obtained as 1.87.
{"title":"Mesh selectivity of gillnet for pointhead flounder Cleisthenes pinetorum","authors":"Kenichi Wakayama, Y. Fujimori, K. Itaya, Osamu Murakami, T. Miura","doi":"10.2331/SUISAN.72.174","DOIUrl":"https://doi.org/10.2331/SUISAN.72.174","url":null,"abstract":"Fishing experiments were carried out in Ishikari Bay, Hokkaido using a bottom gillnet with eight different mesh sizes to estimate the mesh selectivity for pointhead flounder Cleisthenes pinetorum. A total of 957 pointhead flounder were caught. The SELECT analysis with maximum likelihood method was used to fit the different functional models, the normal, lognormal, and bi-normal model. The catch data except for entangling catch was used for calculation. The bi-normal model was found to fit the data best. For the selectivity curve on the bi-normal model, the relative length (the ratio of fish length to mesh size) with the maximum efficiency was obtained as 1.87.","PeriodicalId":9361,"journal":{"name":"Bulletin of the Japanese Society of Scientific Fisheries","volume":"9 1","pages":"174-181"},"PeriodicalIF":0.0,"publicationDate":"2006-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88598239","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
アイゴの海藻摂食に及ぼす振動流の影響を回流水槽で調べた。尾叉長 27 cm のアイゴは食欲の増加に伴い，より強い振動流の中でアラメ・カジメをより多く摂食したが，食欲旺盛な時期でもその摂食は流速振幅 1.1 m/s で半減し，1.5 m/s 程で停止した。この摂食限界はより大型の個体でもあまり増加しないことが体長の異なる個体の遊泳速度から示唆された。これらの結果を本州中部太平洋沿岸で予測される波動流速に当てはめてみると，アイゴの海藻摂食が活発化すると，波動流によって制限される可能性は極めて低いことが示唆された。
{"title":"Effects of oscillating water flow on feeding of rabbitfish Siganus fuscescens on kelp","authors":"S. Kawamata, M. Hasegawa","doi":"10.2331/SUISAN.72.717","DOIUrl":"https://doi.org/10.2331/SUISAN.72.717","url":null,"abstract":"アイゴの海藻摂食に及ぼす振動流の影響を回流水槽で調べた。尾叉長 27 cm のアイゴは食欲の増加に伴い，より強い振動流の中でアラメ・カジメをより多く摂食したが，食欲旺盛な時期でもその摂食は流速振幅 1.1 m/s で半減し，1.5 m/s 程で停止した。この摂食限界はより大型の個体でもあまり増加しないことが体長の異なる個体の遊泳速度から示唆された。これらの結果を本州中部太平洋沿岸で予測される波動流速に当てはめてみると，アイゴの海藻摂食が活発化すると，波動流によって制限される可能性は極めて低いことが示唆された。","PeriodicalId":9361,"journal":{"name":"Bulletin of the Japanese Society of Scientific Fisheries","volume":"127 1","pages":"717-724"},"PeriodicalIF":0.0,"publicationDate":"2006-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72550339","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Length-based stock assessment and fisheries management of hair crab Erimacrus isenbeckii in Funka Bay, Hokkaido, Japan","authors":"E. Mihara, H. Yamaguchi, Y. Ueda, T. Matsuishi","doi":"10.2331/SUISAN.71.935","DOIUrl":"https://doi.org/10.2331/SUISAN.71.935","url":null,"abstract":"許容漁獲量制度が導入されている北海道噴火湾のケガニ資源について，資源管理方策を検討するため，甲長コホート解析（LPA）を適用し資源量推定を行うとともに，甲長に基づく YPR（YPRL）モデルを開発し，資源診断を行った。推定した資源量は回復傾向にはないものの，近年比較的安定していた。YPRL モデルにより資源診断した結果，当資源の許容漁獲量設定に用いている漁獲死亡係数は，F0.1 の 6 割程度で充分安全な値であった。以上のことから，当面は現状の管理基準に基づいた資源管理を継続すべきであると判断された。","PeriodicalId":9361,"journal":{"name":"Bulletin of the Japanese Society of Scientific Fisheries","volume":"65 1","pages":"935-941"},"PeriodicalIF":0.0,"publicationDate":"2005-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75085958","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Effects of Artemia nauplii density on survival, development and feeding of larvae of the horsehair crab Erimacrus isenbeckii (Crustacea, Decapoda, Brachyura) reared in the laboratory","authors":"T. Jinbo, K. Hamasaki, M. Ashidate","doi":"10.2331/SUISAN.71.563","DOIUrl":"https://doi.org/10.2331/SUISAN.71.563","url":null,"abstract":"","PeriodicalId":9361,"journal":{"name":"Bulletin of the Japanese Society of Scientific Fisheries","volume":"50 1","pages":"563-570"},"PeriodicalIF":0.0,"publicationDate":"2005-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85368442","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Expanded polystyrene (EPS) ‰oats are used abundantly for the ‰oats of oyster farming rafts in Hiroshima Bay. This paper investigated the occurrence of stranded debris of foamed plastics, stranding and unsuitable use of EPS ‰oats on the coast of Eta and Kurahashi Islands in the Bay. Stranded debris of foamed plastic was collected from sand samples of 34 sites. Stranded ‰oats on the beach and unsuitably used ‰oats without covers for mooring buoys and fenders on the sea were observed visually at 58 sites along 48.6 km of coastline. The total number of collected debris was 245,656 items. Plastics accounted for 99.9 of the total number. Foamed plastic fragments accounted for 99.5 of the total, the size of under 10.0 mm represented 98.5 of the fragments, and the average density was 44,521.3 pieces per m2. Unsuitably used ‰oats totaled 6,760, and the density was 140.7 pieces per harbor. The density of stranded ‰oats was 1.1 pieces per km. The densities of unsuitably used ‰oats, stranded ‰oats and foamed plastic fragments on the coast of Eta Island were higher than those of Kurahashi Island.
{"title":"Stranded debris of foamed plastic on the coast of Eta Island [Japan] and Kurahashi Island in Hiroshima Bay","authors":"Shigeru Fujieda, K. Sasaki","doi":"10.2331/SUISAN.71.755","DOIUrl":"https://doi.org/10.2331/SUISAN.71.755","url":null,"abstract":"Expanded polystyrene (EPS) ‰oats are used abundantly for the ‰oats of oyster farming rafts in Hiroshima Bay. This paper investigated the occurrence of stranded debris of foamed plastics, stranding and unsuitable use of EPS ‰oats on the coast of Eta and Kurahashi Islands in the Bay. Stranded debris of foamed plastic was collected from sand samples of 34 sites. Stranded ‰oats on the beach and unsuitably used ‰oats without covers for mooring buoys and fenders on the sea were observed visually at 58 sites along 48.6 km of coastline. The total number of collected debris was 245,656 items. Plastics accounted for 99.9 of the total number. Foamed plastic fragments accounted for 99.5 of the total, the size of under 10.0 mm represented 98.5 of the fragments, and the average density was 44,521.3 pieces per m2. Unsuitably used ‰oats totaled 6,760, and the density was 140.7 pieces per harbor. The density of stranded ‰oats was 1.1 pieces per km. The densities of unsuitably used ‰oats, stranded ‰oats and foamed plastic fragments on the coast of Eta Island were higher than those of Kurahashi Island.","PeriodicalId":9361,"journal":{"name":"Bulletin of the Japanese Society of Scientific Fisheries","volume":"31 1","pages":"755-761"},"PeriodicalIF":0.0,"publicationDate":"2005-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89645874","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Antihypertensive effect of alkaline protease hydrolysate of the pearl oyster Pinctada fucata martencii & separation and identification of angiotensin-I converting enzyme inhibitory peptides","authors":"S. Katano, T. Oki, Yuka Matsuo, K. Yoshihira, Y. Nara, T. Miki, T. Matsui, Kiyoshi Matsumoto","doi":"10.2331/SUISAN.69.975","DOIUrl":"https://doi.org/10.2331/SUISAN.69.975","url":null,"abstract":"アコヤガイ貝肉タンパク質をアルカリプロテアーゼ分解し,その分解放による血圧降下作用を高血圧自然発症ラット(SHR/Izm)を用いて,投与後6時間の収縮期血圧により調べた。分解放の低分子溶出画分側からACE阻害活性の高い画分を得たので,これを逆相クロマトグラフィーに供し,ACE阻害活性の高い生理活性ペプチドを,ACE阻害ペプチド(Ala-Trp)を含めて4種類分離・同定した。さらにこれらのペプチドのACE阻害への寄与率は4.5%であった。アコヤガイ貝肉の機能性食素材としての可能性を検討したので報告をする。","PeriodicalId":9361,"journal":{"name":"Bulletin of the Japanese Society of Scientific Fisheries","volume":"1 1","pages":"975-980"},"PeriodicalIF":0.0,"publicationDate":"2003-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83831335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Settlement of wild juvenile red sea bream (Pagrus major) around two types of artificial habitat","authors":"Takaya Kudoh, K. Sawa, K. Yamaoka","doi":"10.2331/SUISAN.68.874","DOIUrl":"https://doi.org/10.2331/SUISAN.68.874","url":null,"abstract":"砂底域に,2種類の人工生息場所を設置し,天然マダイ稚魚の蝟集状況を潜水調査した。マダイは主に人工生息場所を設置した場所に出現した。特に小型個体(30 mm以下)は人工生息場所の0.5 m以内で見られた。人工生息場所β(水平+垂直構造物)の方が,α(水平構造物のみ)に比べて有意に多くの個体が蝟集した。人工生息場所の近辺と藻場周辺で採捕された個体の胃内容物組成と肥満度に有意差は認められなかった。人工生息場所はマダイ稚魚を蝟集させる効果を持ち,食物面では天然の藻場とほぼ同等の機能を持つことが推測された。","PeriodicalId":9361,"journal":{"name":"Bulletin of the Japanese Society of Scientific Fisheries","volume":"20 1","pages":"874-880"},"PeriodicalIF":0.0,"publicationDate":"2002-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72907141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Relation between postmortem biochemical changes and quality in the muscle of fish and shellfish","authors":"H. Yamanaka","doi":"10.2331/SUISAN.68.5","DOIUrl":"https://doi.org/10.2331/SUISAN.68.5","url":null,"abstract":"魚介類の\"生き\"(死後硬直前の状態)の保持については,即殺後,マダイは10℃,ヒラメは5℃-10℃に貯蔵すると死後硬直が遅延した。ホタテガイ生鮮貝柱の硬化防止には5℃流通がよく,除菌洗浄は20分間15℃人工海水が適していた。酸素ガス置換包装によって品質が保持された。ホタテガイ貝柱の加熱褐変はG6P,F6PとTau,Alaのメイラード反応によって発生した。防止法として活貝より分離後速やかに加熱すること,冷凍品は凍結状態のまま加熱することなどが必要であった。赤色魚類の体色保持については,低温処理により養殖マダイの黒色化を防止でき,KC1溶液への浸漬を併せて行うとより効果的であった。","PeriodicalId":9361,"journal":{"name":"Bulletin of the Japanese Society of Scientific Fisheries","volume":"261 1","pages":"5-14"},"PeriodicalIF":0.0,"publicationDate":"2002-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90524620","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Seasonal change in nitrate concentration in seawater and photosynthetic activity of bladelets of Ecklonia cava in Nabeta Bay, Shimoda, southern part of Izu Peninsula, Japan","authors":"Y. Serisawa, Hiroyuki Takaki, A. Kurashima, Y. Yokohama","doi":"10.2331/SUISAN.67.1065","DOIUrl":"https://doi.org/10.2331/SUISAN.67.1065","url":null,"abstract":"伊豆半島南部の下田市鍋田湾において, 海水中の硝酸態窒素濃度の季節変動とカジメの光合成活性との関係を調べるため, 溶存態無機窒素と硝酸態窒素の濃度およびカジメ葉片の純光合成速度を毎月測定した。溶存態無機窒素と硝酸態窒素の濃度, カジメの光合成活性は共に冬に高く夏に低くなるという季節変化を示した。また, 硝酸態窒素を添加した海水中で2日間培養したカジメ葉片の純光合成速度を2ヶ月ごとに測定した。硝酸態窒素添加海水で2日間培養したカジメ葉片の最大光合成速度は, いずれの月でも硝酸態窒素無添加の海水で培養した葉片よりもわずかに高い値を示したが, t検定の結果それらの間に有意差は認められなかった。","PeriodicalId":9361,"journal":{"name":"Bulletin of the Japanese Society of Scientific Fisheries","volume":"35 1","pages":"1065-1071"},"PeriodicalIF":0.0,"publicationDate":"2001-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75304244","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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