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東北海区の深海性タラ目魚類の生態について
https://fra.repo.nii.ac.jp/records/2007281
https://fra.repo.nii.ac.jp/records/2007281e630cd85-c13c-49ed-aea9-2b0980151a53
| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 公開日 | 2024-06-10 | |||||||||||
| タイトル | ||||||||||||
| タイトル | 東北海区の深海性タラ目魚類の生態について | |||||||||||
| 言語 | ja | |||||||||||
| 言語 | ||||||||||||
| 言語 | jpn | |||||||||||
| 資源タイプ | ||||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||||
| 資源タイプ | departmental bulletin paper | |||||||||||
| アクセス権 | ||||||||||||
| アクセス権 | metadata only access | |||||||||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||||||||
| 著者 |
橋本, 良平
× 橋本, 良平
× 渡辺, 光男
× 小谷地, 栄
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| 抄録 | ||||||||||||
| 内容記述タイプ | Abstract | |||||||||||
| 内容記述 | The distribution and abundance of the deep sea fishes on the continental slope off the northeast coast of Japan were surveyed with large type trawlers chartered by the Japanese Fisheries Agency from spring till autumn of 1978, and with a research vessel of Aomori prefecture through 1980 seasons. Many unfamiliar fishes that have not been utilized for the ordinary human food were collected giving an oppotunity to analyse then on the feasibility of commercial fishering and biology of these dermsal fishes. In this report, we dealt with the gadiform fishes that were most abundant in the experimental trawl catches. The data obtained in their research by the members of Iwate and Aomori prefectural experimental stations on the same sea areas were also used in our analysis. The results of our analysis may be summarized as follows. 1. A total of 17 species of gadiform fishes were found in this sea area, but the following 8 species were abundant. Antimora microlepis BEAN, "Kanadadara" Laemonema longipes SCHMIDT, "Itohikidara" Coryphaenoides pectoralis (GILBERT), "Munedara" Coryphaenoides longifilis GÜNTHER, "Himodara" Coryphaenoides acrolepis (BEAN), "Ibarahige" Corphyaenoides cinereus (GILBERT), "Karafutosokodara" Coryphaenoides nasutus GUNTHER, "Hanasokodara" Coelorhynchus gilberti (JORDAN et HUBBUS), "Onihige" 2. The ratio of species among total trawl catch increased with the depths of water, and on the areas deeper than 1000 meters the ratio exceeded 90 percent. Distribution of each species with regard to the depth of water had a characteristic range as follows. "Munedara" from about 800 to 1200 m, "Himodara and Ibarahige" from about 800 m to 1400 m, "Karafutosokodara" from about 800 m to 1500 m, "Itohikidara" from about 500 m to 900 m, "Kanadadara" deeper than 1200 m. 3. The catch of gadiform fishes off Miyagi prefecture have been increasing since the 1978 fishing season. 4. Through seasonal change of catch in each prefecture, we could estimate the migratory behavior in these demersal fishes. The catch of "Itohikidara" off Miyagi prefecture attains a peak during a period from May to October. 5. Spawning season of each species was estimated to be from November to December for "Munedara", from January to March for "Himodara" and in January for "Ibarahige and Itohikidara", but for a part of each species the spawning activity in summer is also estimated. 6. Stomach content analysis was carried out for each species. Polychaets and amphipods were the main food items in "Hanasokodara" and "Karafutosokodara". Polychaets, amphipods, shrimps, cephalopods and pisces occurred in the stomachs of "Ibarahige and Onihige". The main food of "Munedara and Himodara" were pisces, cephalopods and shrimps. The occurrence of empty or disgorge stomach was frequent in "Himodara, Ibarahige and Kanadadara". | |||||||||||
| 言語 | en | |||||||||||
| 抄録 | ||||||||||||
| 内容記述タイプ | Abstract | |||||||||||
| 内容記述 | 1. 東北海区の深海域に分布するソコダラ類は17種が知られ,そのうち分布量の多い魚種はカナダダラ·イトヒキダラ·ムネダラ·ヒモダラ·イバラヒゲ·カラフトソコダラ·ハナソコダラ及びオニヒゲの8種である.2. 上記の魚種が沖合底びき網の漁獲量に占める割合は,水深が深くなるに従って高くなり,1000m以深では9割以上となる.生息水深の中心はムネダラが800~1200m,ヒモダラとイバラヒゲは800~1400m,カラフトソコダラは 800~1500m,イトヒキダラは500~900m,カナダダラは1200m以深である.3. 金華山沖の沖合底びき網漁業では1978年から,500m以深のひき網数が増加し,それに伴ってソコダラ類の漁獲量が増加した.青森県沖のイトヒキダラは9~12月に,宮城県沖のヒモダラは5~10月に,それぞれ単位努力当り漁獲量が高くなり,時期的変動が認められる.4. 各魚種の雌雄別の体長組成と性比を検討した.一般に大型のものほど雌の比率が高まる傾向がみられる、魚種別の体長範囲は次の通りである。ムネダラ 雌の体長52~164cm,雄54~119cm.ヒモダラ 体長31~101cm,モードは雌85cm,雄70cm 付近.イバラヒゲ 体長29~98cm,雌雄とも45cmにモードがあり,雄65cm,雌75cmに副モードがある.カラフトソコダラ 体長31~54cm,雄では46cm にモードがあるが,雌は明瞭でない.オニヒゲ 体長25~66cm,モードは雌雄ともに45cm付近.カナダダラ 体長14~56cm,モードは30cm,40cm,46cm付近.イトヒキダラ 体長23~62cm,雌のモード 54cm,雄で43cm,48cm付近.5. 肥満度はカナダダラで6~12でかなり高く,以下イトヒキダラ(4~7),ムネダラ·イバラヒゲ(2~·6),ハナソコダラ·オニヒゲ(2~4.5)となり,ヒモダラ·カラフトソコダラ(1~3)で低い値が得られた.ある大きさまでは体長と肥満度が比例し,それ以上では肥満度が増えないもの(ムネダラ·イバラヒゲ·ヒモダラ),またこれと反対の傾向のもの(オニヒゲ·カナダダラ)がある。6. 産卵期はムネダラが11~12月,ヒモダラは1~3月,イバラヒゲは1~4月,イトヒキダラは1月前後と推定されるが,ムネダラ·ヒモダラ·イバラヒゲの一部は7~8月にも産卵するとみられる.7. 餌生物としてハナソコダラ·カラフトソコダラ及びヒゴソコダラは多毛類と端脚類,イバラヒゲとオニヒゲは多毛類·端脚類·魚類·頭足類·エビ類,ムネダラととモダラは魚類·頭足類·エビ類を主に捕食していろ.なおイトヒキダラとカナダダラは反転胃と空胃の割合が高い. | |||||||||||
| 言語 | ja | |||||||||||
| 書誌情報 |
ja : 東北区水産研究所研究報告 en : Bulletin of Tohoku Regional Fisheries Research Laboratory 巻 44, 号 tnf_k_44_1, p. 1-24, ページ数 24, 発行日 1982-03 |
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| 出版者 | ||||||||||||
| 出版者 | 東北海区水産研究所 | |||||||||||
| 言語 | ja | |||||||||||
| 出版者 | ||||||||||||
| 出版者 | Tohoku Regional Fisheries Research Laboratory | |||||||||||
| 言語 | en | |||||||||||
| ISSN | ||||||||||||
| 収録物識別子タイプ | PISSN | |||||||||||
| 収録物識別子 | 0049-402X | |||||||||||
| 書誌レコードID | ||||||||||||
| 収録物識別子タイプ | NCID | |||||||||||
| 収録物識別子 | AN00167637 | |||||||||||
| 情報源 | ||||||||||||
| 識別子タイプ | Local | |||||||||||
| 関連識別子 | tnf_k_44_1 | |||||||||||
| 関連サイト | ||||||||||||
| 識別子タイプ | URI | |||||||||||
| 関連識別子 | https://agriknowledge.affrc.go.jp/RN/2010252131 | |||||||||||
| 言語 | ja | |||||||||||
| 関連名称 | 日本農学文献記事索引(agriknowledge) | |||||||||||
