Changes in swimming speed of larval and juvenile nigorobuna Carassius auratus grandoculis associated with growth and exercise training in running water

公一, 藤原; 崇広, 臼杵; 修一, 北田

doi:10.2331/suisan.76.1025

Cited by 5 publications

(2 citation statements)

References 25 publications

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“…The commencement of migration of bentho‐pelagic cyprinids from littoral to deeper zones in shallow lakes often coincides with changes morphology (Bohl, ; Hammer, ; Rheinberger et al, ; Mark et al, ). During the juvenile stage (>14·2 mm L S ) of G. caerulescens , a marked increase in both cruising and burst speed has been observed (Fujiwara, ). During the sub‐adult stage (>19·7 mm L S ), the bodies of G. caerulescens are covered with scales and individuals begin to swim in midwater (Nakamura, ).…”

Section: Discussionmentioning

confidence: 99%

“…Accordingly, G. caerulescens begin moving to the pelagic zone after the juvenile stage, having acquired the improved swimming ability and body protection necessary for navigating open water and escaping predation. Likewise, nigorobuna crucian carp Carassius auratus ( grandoculis ) (L. 1758), a benthic cyprinid native to Lake Biwa, begins moving lakeward from the reed zone (spawning and nursery area) at L S > 16·0 mm (transition from larval to juvenile stage), having also acquired improved swimming ability (Fujiwara et al, , ).…”

Section: Discussionmentioning

confidence: 99%

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Juvenile migration of the exclusively pelagic cyprinid, Gnathopogon caerulescens (Honmoroko) in Lake Biwa, Central Japan

Kikko

Ishizaki

Kuwamura

et al. 2018

Journal of Fish Biology

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Migration of wild and cultivated juvenile honmoroko Gnathopogon caerulescens of from the spawning and nursery areas in Lake Biwa were investigated, both in the Ibanaiko Lagoon and its outlet to Daido River, using beam-trawl surveys in 2013 and 2014. The study demonstrated migration of G. caerulescens from a nursery lagoon toward Lake Biwa after the juvenile stage. These findings appear to be the first direct evidence for migration of an exclusively pelagic cyprinid species from a littoral nursery to a pelagic adult habitat in a large deep lake.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Juvenile migration of the exclusively pelagic cyprinid, Gnathopogon caerulescens (Honmoroko) in Lake Biwa, Central Japan

Kikko

Ishizaki

Kuwamura

et al. 2018

Journal of Fish Biology

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Growth and expansion of habitat of released nigorobuna Carassius auratus grandoculis juveniles in Lake Biwa, and effective release strategies to the offing

公一¹,

崇広²,

守仁³

et al. 2011

NSUGAF

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Reed zones indispensable for the development and early growth of nigorobuna Carassius auratus grandoculis in Lake Biwa are on the decline. In order to examine eŠective release strategies for thisˆsh independent of reed zone, a follow-up survey of otolith marked juvenile nigorobuna with ALC released into reed zones in June to July was conducted. As a result, growth of nigorobuna was as good as in the year with high water temperature from August to October. Nigorobuna extended the distribution along with the thermocline when the water temperature fell gradually toward winter, and expanded the distribution toward the bottom of the lake when the water temperature diŠerence of the upper and lower layers of the thermocline was less than about 3.5 degrees. High survival was expected by releasing young nigorobuna of body weight ca. 20 g (standard length ca. 85 mm) to the o‹ng during this period.

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Early life ecology of nigorobuna Carassius auratus grandoculis in reed zone of Lake Biwa and physiological adaptation to the environment

公一¹,

崇広²,

守仁³

et al. 2011

NSUGAF

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Nippon Suisan Gakkaishi 77(3), 387 401 (2011) 琵琶湖沿岸のヨシ帯におけるニゴロブナCarassius auratus grandoculis の初期生態とその環境への適応 The early life ecology of nigorobuna Carassius auratus grandoculis was investigated in order to determine the requirements for developing breeding grounds and eŠective release sites for its stock enhancement in Lake Biwa.Larval nigorobuna within the well-developed reed zone swarmed actively near the shoreline immediately after release and began to leave the reed zone when they grew to the juvenile stage of approximately 16 mm in standard length. Zooplankton used as food for the larvae were abundant near the shoreline in the reed zone, but there was

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Changes in swimming speed of larval and juvenile nigorobuna Carassius auratus grandoculis associated with growth and exercise training in running water

Cited by 5 publications

References 25 publications

Juvenile migration of the exclusively pelagic cyprinid, Gnathopogon caerulescens (Honmoroko) in Lake Biwa, Central Japan

Juvenile migration of the exclusively pelagic cyprinid, Gnathopogon caerulescens (Honmoroko) in Lake Biwa, Central Japan

Growth and expansion of habitat of released nigorobuna Carassius auratus grandoculis juveniles in Lake Biwa, and effective release strategies to the offing

Early life ecology of nigorobuna Carassius auratus grandoculis in reed zone of Lake Biwa and physiological adaptation to the environment

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