耳石微量成分分析から推定された青森県小川原湖におけるシラウオの遡河回遊群
書誌事項
- タイトル別名
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- Anadromous Migrants of Shirauo, <I>Salangichthys microdon</I>, in Lake Ogawara, as Determined by Otolith Microchemistry Analysis
- ジセキ ビリョウ セイブン ブンセキ カラ スイテイサレタ アオモリケン オガワラコ ニ オケル シラウオ ノ ソカ カイユウグン
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To reveal the life history pattern of Shirauo, Salangichthys microdon, in Lake Ogawara, we examined otolith Sr:Ca ratios in individuals from Lake Ogawara (n=12) and its tributary, the Takase River (n=6). Sr:Ca ratios were observed in two types of patterns: a resident pattern with low Sr:Ca ratio from core to edge, and an anadromous pattern with abrupt increases in Sr:Ca ratio. Back-calculated total lengths at the time of seaward migrations of anadromous individuals were 63.4-67.7 mm for five specimens from the river, and 36.8-63.8 mm for three from the lake. These findings suggest there is a wide variation in life history for S. microdon, and that residents and anadromous migrants live together in the lake.
収録刊行物
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- 水産増殖
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水産増殖 56 (1), 121-126, 2008
日本水産増殖学会
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詳細情報 詳細情報について
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- CRID
- 1390282679693021568
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- NII論文ID
- 10026139284
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- NII書誌ID
- AN00124667
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- ISSN
- 21850194
- 03714217
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- NDL書誌ID
- 9427429
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- IRDB
- NDL
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可