Anadromous Migrants of Shirauo, <I>Salangichthys microdon</I>, in Lake Ogawara, as Determined by Otolith Microchemistry Analysis
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- Katayama Satoshi
- Coastal Fisheries and Aquaculture Division, National Research Institute of Fisheries Science
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- Sakaki Masafumi
- Aomori Prefectural Fisheries Research Center, Inlandwater Fisheries Insutitute
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- Tsurugasaki Akihiko
- Ogawarako Fisheries Cooperation
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- Numabe Kei-ichi
- Ogawarako Fisheries Cooperation
Bibliographic Information
- Other Title
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- 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
- 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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Abstract
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.
Journal
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- Aquaculture Science
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Aquaculture Science 56 (1), 121-126, 2008
Japanese Society for Aquaculture Science
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Details 詳細情報について
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- CRID
- 1390282679693021568
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- NII Article ID
- 10026139284
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- NII Book ID
- AN00124667
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- ISSN
- 21850194
- 03714217
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- NDL BIB ID
- 9427429
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- Text Lang
- en
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- Data Source
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- JaLC
- IRDB
- NDL
- CiNii Articles
- Crossref
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- Abstract License Flag
- Disallowed
