Seasonal variations in the trophic relationship between the scyphomedusa Aurelia aurita s.l. and mesozooplankton in a eutrophic brackish-water lake, Japan
-
- Han Chang-Hoon
- Graduate School of Biosphere Science, Hiroshima University
-
- Kawahara Masato
- Graduate School of Biosphere Science, Hiroshima University
-
- Uye Shin-ichi
- Graduate School of Biosphere Science, Hiroshima University
書誌事項
- タイトル別名
-
- Seasonal variations in the trophic relationship between the scyphomedusa <i>Aurelia aurita</i> s.l. and mesozooplankton in a eutrophic brackish-water lake, Japan
この論文をさがす
抄録
The seasonal variations in trophic relationship between the moon jelly Aurelia aurita s.l. and mesozooplankton were investigated in a brackish-water lake, Honjo District, Japan from June 2005 to August 2006. The medusae occurred abundantly (average abundance and biomass: 0.55 medusae m−3 and 58.8 mg C m−3, respectively) during warm seasons (i.e. June–November, 2005), but were very scarce or absent during the remaining seasons. The mesozooplankton biomass fluctuated from 1.3 to 150 mg C m−3 (overall average: 60.5 mg C m−3) irrespective of the medusa biomass variation. Mesozooplankton were preyed upon by medusae almost non-selectively; the small copepod Oithona davisae and bivalve larvae were the predominant prey, comprising 52–99% (average: 85%) of the gastric pouch contents. The medusa population ingestion rate on mesozooplankton varied from 0.11 to 12.8 mg C m−3 d−1, which corresponded to 0.6 to 29% of the mesozooplankton biomass per day and to 1.6 to 47% of mesozooplankton daily production rate. A. aurita medusae were certainly a key component of the zooplankton community, but they did not exert any significant top-down control as to suppress mesozooplankton biomass in this eutrophic lake.
収録刊行物
-
- Plankton and Benthos Research
-
Plankton and Benthos Research 4 (1), 14-22, 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
- 1390001205265470464
-
- NII論文ID
- 10025110344
-
- NII書誌ID
- AA12130745
-
- DOI
- 10.3800/pbr.4.14
-
- ISSN
- 1882627X
- 18808247
-
- NDL書誌ID
- 10169117
-
- 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