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新潟県北部沿岸域におけるマガレイ成魚群の生活年周期と分布

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Title: 新潟県北部沿岸域におけるマガレイ成魚群の生活年周期と分布
Other Titles: Annual Life Cycle and Distribution of Adult Righteye Flounder Pleuronectes herzensteini in the Coastal Waters of Northern Niigata Prefecture
Authors: 富永, 修1 Browse this author
梨田, 一也2 Browse this author
前田, 辰昭3 Browse this author
高橋, 豊美4 Browse this author
加藤, 和範5 Browse this author
Authors(alt): Tominaga, Osamu1
Nashida, Kazuya2
Maeda, Tatsuaki3
Takahashi, Toyomi4
Kato, Kazunori5
Issue Date: 1991
Publisher: 日本水産学会
Journal Title: 日本水産学会誌
Journal Title(alt): Bulletin of the Japanese Society of Scientific Fisheries
Volume: 57
Issue: 11
Start Page: 2023
End Page: 2031
Publisher DOI: 10.2331/suisan.57.2023
Abstract: Seasonal changes in gonadosomatic index, hepatosomatic index, condition factor, and stomach content index of samples collected by experimental trawls from November 1981 to February 1985 were examined to clarify the annual life cycle and distribution of adult Pleuronectes herzensteini in the coastal waters of northern Niigata Prefecture. In addition, 1,126 tagged fish were released in the autumn of 1984. Adult fish were concentrated in the offshore area at a depth of more than 130 m from August to December. From January to February, they migrated toward the inshore area (50-90 m) from Niigata Prefecture to Toyama Prefecture as gonads developed and they spawned between February and May. Migration toward the offshore area occurred chiefly after June. Feeding intensity expressed as stomach content index increased after the spawning season and decreased after August-September when hepatosomatic index and condition factor attained a peak in the seasonal cycle. From these results, the annual life pattern of adult P. herzensteini is roughly divided into the following four periods; spawning migration (January-February), spawning (February-May), active feeding and feediing migration (May-July), and inactive feeding (August-December).
Rights: © 1991 公益社団法人日本水産学会
© 1991 The Japanese Society of Fisheries Science
Type: article
URI: http://hdl.handle.net/2115/38667
Appears in Collections:水産科学院・水産科学研究院 (Graduate School of Fisheries Sciences / Faculty of Fisheries Sciences) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 高橋 豊美

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