Impact of low temperature during the winter on the mortality in the post-settlement period of the juvenile of short-neck clam, Ruditapes philippinarum, on the tidal flats in Hichirippu Lagoon, Hokkaido, Japan
-
- Komorita Tomohiro
- Graduate School of Environmental Science, Hokkaido University
-
- Shibanuma Seiichiro
- Graduate School of Environmental Science, Hokkaido University
-
- Yamada Toshiro
- Nishimuragumi Co. Ltd.
-
- Kajihara Rumiko
- Graduate School of Environmental Science, Hokkaido University
-
- Tsukuda Masanori
- Graduate School of Environmental and Symbiotic Sciences, Prefectural University of Kumamoto
-
- Montani Shigeru
- Graduate School of Environmental Science, Hokkaido University
書誌事項
- タイトル別名
-
- Impact of low temperature during the winter on the mortality in the post-settlement period of the juvenile of short-neck clam, <i>Ruditapes philippinarum</i>, on the tidal flats in Hichirippu Lagoon, Hokkaido, Japan
この論文をさがす
説明
We conducted field surveys to monitor the population dynamics of short-neck clam, Ruditapes philippinarum, in Hichirippu Lagoon, in eastern Hokkaido, Japan, focussing on the negative impact of extremely low temperatures during the winter on juveniles in the post-settlement period. The clam population had a short annual breeding season between September and November. The newly settled juveniles experienced the severe winter as the daily mean temperature of the surface sediment descended below 0°C soon after settlement. The mortality of small juveniles (less than 3 mm in mean shell length) in the post-settlement period between October 24, 2006, and August 1, 2007, was estimated at 1.34% d−1, which was approximately 5.6 times higher than after the post-settlement periods (0.24% d−1 and 0.17% d−1). We compared the mortality of the juvenile in and after the post-settlement period with the results of the population study conducted on Kikuchi River Tidal Flat, Kumamoto, Kyushu (Tsukuda 2008), where the daily mean temperature was approximately 6°C higher in the post-settlement period of the juveniles. On Kikuchi River Tidal Flat, the mortality in and after the post-settlement period of the juvenile was estimated at 1.62% d−1, and 0.49% d−1 and 0.44% d−1, respectively. These facts indicate that the extremely low winter temperatures in this study area (eastern Hokkaido) does not bring about large-scale mortality, and this is true not only for juveniles after the post-settlement period but also small juveniles in the post-settlement period.
収録刊行物
-
- Plankton and Benthos Research
-
Plankton and Benthos Research 4 (1), 31-37, 2009
日本プランクトン学会、日本ベントス学会
- Tweet
詳細情報 詳細情報について
-
- CRID
- 1390282680242178560
-
- NII論文ID
- 10025110431
-
- NII書誌ID
- AA12130745
-
- DOI
- 10.3800/pbr.4.31
-
- ISSN
- 1882627X
- 18808247
-
- NDL書誌ID
- 10169140
-
- 本文言語コード
- en
-
- データソース種別
-
- JaLC
- NDL
- Crossref
- CiNii Articles
-
- 抄録ライセンスフラグ
- 使用不可