神戸大学附属図書館デジタルアーカイブ
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https://hdl.handle.net/20.500.14094/90005940
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2024-05-04
20:58 集計
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90005940 (fulltext)
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メタデータID
90005940
アクセス権
open access
出版タイプ
Version of Record
タイトル
The life history with seasonal migration of the lacustrine shrimp Palaemon paucidens in an ancient lake in Japan
著者
Wu, Qianqian ; Takami, Yasuoki ; Minamoto, Toshifumi ; Ishikawa, Toshiyuki
著者名
Wu, Qianqian
著者ID
A0567
研究者ID
1000060432358
KUID
https://kuid-rm-web.ofc.kobe-u.ac.jp/search/detail?systemId=1bc3f369828e365f520e17560c007669
著者名
Takami, Yasuoki
高見, 泰興
タカミ, ヤスオキ
所属機関名
人間発達環境学研究科
著者ID
A0574
研究者ID
1000050450656
KUID
https://kuid-rm-web.ofc.kobe-u.ac.jp/search/detail?systemId=481adea9a93d8196520e17560c007669
著者名
Minamoto, Toshifumi
源, 利文
ミナモト, トシフミ
所属機関名
人間発達環境学研究科
著者名
Ishikawa, Toshiyuki
収録物名
Ecosphere
巻(号)
10(4)
ページ
e02628-e02628
出版者
Ecological Society of America
刊行日
2019-04
公開日
2019-05-10
抄録
The lacustrine shrimp Palaemon paucidens undertakes seasonal migration between shallow waters in spring and summer to deep waters in autumn and winter in Lake Biwa in Japan. Previous studies hypothesized that the migration to deep waters was for hibernation. The findings of this study oppose this hypothesis. We showed that P. paucidens is physiologically active in deep waters during winter; that the carbon stable isotope ratio indicated that the species forages in winter and that there was a difference in food sources between summer and winter; that lipid content was highest in January; and that gene expression activity (as measured by the RNA/DNA ratio) remained constant throughout the year. Thus, P. paucidens individuals that migrate to the bottom are likely to forage in winter, but do not hibernate. Nutrients gained in winter were not reflected in individual growth but may have been allocated to gonadal growth and the production of gametes, suggesting that winter foraging by this species in deep sites contributes to obtain resources for reproductive investment. In addition, we found that both small individuals with no reproductive experience and relatively large females with reproductive experience overwintered, indicating that P. paucidens has a life-cycle that is longer than 1 yr in Lake Biwa.
キーワード
body size
Lake Biwa
lipid content
reproductive condition
RNA/DNA ratio
seasonal migration
stable isotope ratio
カテゴリ
人間発達環境学研究科
学術雑誌論文
権利
© 2019 The Authors.
This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
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資源タイプ
journal article
言語
English (英語)
eISSN
2150-8925
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関連情報
DOI
https://doi.org/10.1002/ecs2.2628
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