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長崎県柳浜におけるオオクチイシナギ(スズキ科)稚魚の出現と生態


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タイトル: 長崎県柳浜におけるオオクチイシナギ(スズキ科)稚魚の出現と生態
その他のタイトル: Occurrence and Ecology of Juvenile Striped Jewfish Stereolepis doederleini (Family Percichthyidae) in Yanagihama Beach, Nagasaki Prefecture
著者: 乃一, 哲久 / 神原, 利和 / 水戸, 鼓 / 坂本, 史子 / 木村, 基文 / 千田, 哲資
著者(別表記) : Noichi, Tetsuhisa / Kanbara, Toshikazu / Mito, Tsuzumi / Sakamoto, Fumiko / Kimura, Motofumi / Senta, Tetsushi
発行日: 1990年10月
出版者: 長崎大学水産学部
引用: 長崎大学水産学部研究報告, v.68, pp.29-34; 1990
抄録: A total of 106 juveniles ranging from 8.5 to 46.0mm SL of striped jewfish Stereolepis doederleini were collected along a beach of Nagasaki Prefecture. The juveniles occurred from April to June with the peak of occurrence in April or May. Within wading depths they were caught exclusively from the bottom layer. We often found and collected them with a small scoop net along the beach line, 10 to 50cm deep, at low tide. The juveniles were sporadically distributed among small pieces of seaweeds and terrestrial plants scattered drifting on the sea bottom. Usually their movement was very slow, often swimming quietly in a small circle with their tail bending to form L-shape. A juvenile 10.4mm SL had 22 rings on lapillus, and a juvenile 30.5mm SL had 61 rings. Within this range, standard length (y, mm) of the fish related to the number of rings (x) of lapilli as y=33.99/(1+e².¹³⁻⁰.⁰x). The main food item of the fish up to 20mm SL was Copepoda, and changed to Mysidacea thereafter, while fishes also became to consist a significant part of stomach contents of the fish. They began to disappear from the beach when they reached about 30mm SL and five vertical stripes appeared on the side.
キーワード: オオクチイシナギ / Stereolepis doederleini / 行動 / Behavior / 耳石 / Otolith / 食性 / Feeding habits / 汀線附近の稚魚 / Juvenile fish along beach
URI: http://hdl.handle.net/10069/29896
ISSN: 05471427
資料タイプ: Departmental Bulletin Paper
原稿種類: publisher
出現コレクション:第68号

引用URI : http://hdl.handle.net/10069/29896

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