{"created":"2023-05-15T16:35:38.831903+00:00","id":8606,"links":{},"metadata":{"_buckets":{"deposit":"60c1fd50-c917-4029-bde0-871c85de6728"},"_deposit":{"created_by":2,"id":"8606","owners":[2],"pid":{"revision_id":0,"type":"depid","value":"8606"},"status":"published"},"_oai":{"id":"oai:nagasaki-u.repo.nii.ac.jp:00008606","sets":["50:78:79:633"]},"author_link":["34841","34842"],"item_3_alternative_title_19":{"attribute_name":"その他のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"Studies on Penaeus orientalis KISHINOUYE―VI Some Influences on Metamorphosis, Growth and Feeding Inclination"}]},"item_3_biblio_info_6":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1967-08","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"100","bibliographicPageStart":"89","bibliographicVolumeNumber":"23","bibliographic_titles":[{"bibliographic_title":"長崎大学水産学部研究報告"},{"bibliographic_title":"Bulletin of the Faculty of Fisheries, Nagasaki University","bibliographic_titleLang":"en"}]}]},"item_3_description_4":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"The larvae in the zoea stage have a strictly limited feeding inclination, and among diatoms, Skeletonema costatum is the most efficient as their food. Temperature has a strong influence on ecdysis and metamorphosis and a temperature of 24℃ is suitable. The larvae in the mysis stage prey upon moving animals, whose body size and movement rapidity have influence on their feeding. The post larvae, immediately after the metamorphosis, prey on only floating moving organisms, but after the middle of this atage, they feed on benthonic living organisms or the flesh of shellfishes. In the young prawns after the completion of metamorphosis from the post-larvae, sex determination is not recognized until about two weeks after. The influence of temperature on their growth is great; the most suitable temperature is 24℃, and higher temperature causes a rapid decrease of the growth. The decrease of pH has no direct influence on the growth, but hastens the ecdysis. As for the preference of the adults for food, the clam alone shows a positive tendency, and migrating fishes, benthonic fishes and shellfishes all negative tendencies. The daily volume of food intake is not constant, and they feed on nothing on the ecdysis days. But, before ecdysis, they have a peculiar character of feeding only on the internal organs of clams. Even on ordinary days, the prawns hardly take the mantles and syphons of clams, but there is observed no difference between intake of their feet and of internal organs. The intake by night is much larger than that by day. Moreover, the amount of the food intaken is increased proportionally with that of the food available but in that case, coefficient of utilization shows a rapid decrease. The maximum intake is 8.7% of their body weight, and the coefficient of utilization in that case is only 60-70%.","subitem_description_type":"Abstract"},{"subitem_description":"餌料の適不適,摂餌の多寡は幼生,成体を問わずその成長を左右するので,餌料の種類と摂餌および成長,摂餌におよぼす環境の影響等について観察した. 幼生中zoea期に属するものは餌料の制限が厳格で珪藻類中でもskeletonema costa-tumが有効なようである.また,脱皮,変態に対する温度の影響も強く24℃前後が適温のようである. mysis期になると動く動物を捕食するが,太さ,運動の速さが摂餌に影響し,次期への変態の速さ,およびその間の死亡数から考えてワムシ等が適当な餌料であると判断された. post-larvaに変態した初期のlarvaはまだ底棲性を示さないので浮遊性の運動する生物等が適当と思われる.しかし,底棲の性質を示すようになるとアサリの内臓,肉等を好んで摂るようになる. post-larvaにおける20数回の脱皮後稚エビへ変態を完了するがまだ性の分化は認められず,2週間後にその分化が認められた. 成長は実験用水槽飼育のものが天然のものより劣っているが,その違いが現われる時期は変態完了後20日目位からである.したがってこの時期が野外養殖への移殖の時期といえよう. 成長に与える温度の影響をみると,脱皮間の成長率は24℃まで温度に対応して伸びているが,適温24℃を過ぎると成長率は急激な変動をともなって急速に低下している.しかし,pHについては成長率との関係は求められなかったが,海水のpHの低下が脱皮間の間隔を縮めているようであるから多数飼育した場合には脱皮の不そろいが目立ってくる. 成体の餌料に対する嗜好度は実験に用いた種類の範囲内ではアサリのみが(+)の傾向を示し,アジ肉は(±)で小エビ,カレイ等に対しては(-)を示した.したがって,有効餌料はアサリのみといえるが,応用面からはアジ肉が餌料の増量剤として有効であるといえよう. 日間摂餌量は日によって変動がみられるが脱皮する日は無摂餌である.また,脱皮前にアサリの肉臓のみを摂る時期がみられる.また,産卵前の時期には雄の肝臓部分を友喰いしている状態がみられる.一方,普段の日でもアサリの水管や外套膜は摂らない場合が多い.しかし,内臓と斧足の筋肉について選択性の違いを調べてみたがその違いは認められなかった.また,1日における摂餌の傾向をみると夜間の摂餌量が多く昼間の4.5倍程もあった. また,新鮮餌料と保存餌料に対する摂餌の違いを比べたところ1:1.6の割合で保存餌料をよく摂っていた. したがって,保存餌料について最大摂餌料を求めたところ,78gの個体を30尾飼育した場合1尾が1日にアサリの剥身を正味1.7箇摂り得るという結果が得られた.しかし,この場合利用率は悪く60～70%であるため摂餌量の1.5～1.7倍のアサリを与えねばならないことになる.利用率は餌料の量が少なければ少ない程高いが,与えられる餌料の量が多くなると急速に低下してくる.","subitem_description_type":"Abstract"}]},"item_3_description_64":{"attribute_name":"引用","attribute_value_mlt":[{"subitem_description":"長崎大学水産学部研究報告, v.23, pp.89-100; 1967","subitem_description_type":"Other"}]},"item_3_full_name_3":{"attribute_name":"著者別名","attribute_value_mlt":[{"nameIdentifiers":[{"nameIdentifier":"34842","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Oka, Masao"}]}]},"item_3_publisher_33":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"長崎大学水産学部"}]},"item_3_relation_29":{"attribute_name":"論文ID（NAID）","attribute_value_mlt":[{"subitem_relation_type":"isIdenticalTo","subitem_relation_type_id":{"subitem_relation_type_id_text":"40018181025","subitem_relation_type_select":"NAID"}}]},"item_3_source_id_10":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AN00178473","subitem_source_identifier_type":"NCID"}]},"item_3_source_id_7":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"05471427","subitem_source_identifier_type":"ISSN"}]},"item_3_version_type_16":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"岡, 正雄"}],"nameIdentifiers":[{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2020-12-21"}],"displaytype":"detail","filename":"suisan23_089.pdf","filesize":[{"value":"847.3 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"suisan23_089.pdf","url":"https://nagasaki-u.repo.nii.ac.jp/record/8606/files/suisan23_089.pdf"},"version_id":"6336ca66-8a1d-45ba-85e5-ae8e68f7bf12"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"departmental bulletin paper","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"コウライエビPenaeus orientalis KISHINOUYEの研究―6 : 変態および成長におよぼす影響と摂餌傾向について","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"コウライエビPenaeus orientalis KISHINOUYEの研究―6 : 変態および成長におよぼす影響と摂餌傾向について"}]},"item_type_id":"3","owner":"2","path":["633"],"pubdate":{"attribute_name":"公開日","attribute_value":"2013-04-17"},"publish_date":"2013-04-17","publish_status":"0","recid":"8606","relation_version_is_last":true,"title":["コウライエビPenaeus orientalis KISHINOUYEの研究―6 : 変態および成長におよぼす影響と摂餌傾向について"],"weko_creator_id":"2","weko_shared_id":-1},"updated":"2023-05-16T02:02:08.576371+00:00"}