BURST SPEED OF ICE GOBY (<i>LEUCOPSARION PETERSII</i>) DURING UPSTREAM RIVER MIGRATION PERIOD
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- IZUMI Mattashi
- 弘前大学 農学生命科学部地域環境工学科
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- AZUMA Nobuyuki
- 弘前大学 農学生命科学部生物学科
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- MARUI Atsushi
- 弘前大学 農学生命科学部地域環境工学科
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- YATAYA Kenichi
- 建設技術研究所株式会社 東北支社 河川部
Bibliographic Information
- Other Title
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- 河川遡上期におけるシロウオの突進速度に関する実験
- カセン ソジョウキ ニ オケル シロウオ ノ トッシン ソクド ニ カンスル ジッケン
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Abstract
In this study, field experiments were conducted to examine the burst speed of the ice goby, Leucopsarion petersii, a diadromous fish, during its upstream river migration period. The results showed that for ice gobies approximately 4 cm in length, the mean burst speed of the ice goby was the highest under a flow velocity of approximately 40-cm/s, and its value was 90 cm/s, equivalent to a velocity of 21 body lengths per second. The experiments demonstrated that there is a clear relationship between the flow velocity and swimming distance of the ice goby. At flow velocities of ≤ 40 cm/s, ≥ 80% of the ice gobies advanced at least 50 cm. The critical flow velocity at which the ice goby could swim was less than approximately 95 cm/s. This is the same as the burst speed of the ice goby.
Journal
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- Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research)
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Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research) 73 (7), III_269-III_274, 2017
Japan Society of Civil Engineers
