The Study of Relationship between Burrowing Behavior and Energy Consuming Process of Japanese Littleneck Clam(Ruditapes Philippinarum) at the Stormy Conditions in Winter
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- KEINO Hideki
- KCS Co. Ltd.
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- SUGIYAMA Izumi
- KCS Co. Ltd.
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- NISHIZAWA Tadashi
- KCS Co. Ltd.
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- SUZUKI Teruaki
- Aichi Fisheries Research Institute:(Present office)Marine Resources Research Center Aichi Fisheries Research Institute
Bibliographic Information
- Other Title
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- 冬季波浪時におけるアサリの潜砂行動とエネルギー消費過程に関する実験的研究
- トウキ ハロウジ ニ オケル アサリ ノ センサ コウドウ ト エネルギー ショウヒ カテイ ニ カンスル ジッケンテキ ケンキュウ
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Abstract
In order to elucidate the influence of large winter waves on the mortality of Japanese littleneck clams(Ruditapes philippinarum), we conducted surface exposure experiments using seawater tanks in summer and winter. Clams were manually exposed to the seabed surface with different frequencies, and their burrowing rate, glycogen content and condition factor were found to be negatively correlated with the frequency of the exposure in both seasons and the values were lower in winter than in summer. These results show that repeated surface exposure reduces glycogen content and condition factor and results in a lower burrowing rate. Moreover, its influence is more severe in winter. In the winter experiment, some clams on the surface burrowed and then crawled out. The clams that crawled out had much lower glycogen contents(less than 10mg/g), than those that burrowed, indicating that they were weakened. These results suggest that exposure to large winter waves leads to the death of the clams.
Journal
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- Journal of Fisheries Engineering
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Journal of Fisheries Engineering 42 (1), 1-7, 2005
The Japanese Society of Fisheries Engineering
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Details 詳細情報について
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- CRID
- 1390282680839939584
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- NII Article ID
- 110006279688
- 10021606502
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- NII Book ID
- AN10278554
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- ISSN
- 21897131
- 09167617
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- NDL BIB ID
- 7454981
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- Text Lang
- ja
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- Data Source
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- JaLC
- IRDB
- NDL
- CiNii Articles
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- Abstract License Flag
- Disallowed