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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/41566

Title: Pigmented nanoflagellate in the coastal western subtropical Pacific are important grazers on Synrchococcus population
Authors: An-Yi Tsai
Kuo-Ping Chiang
Ya-Fan Chan
Yun-Chi Lin
Jeng Chang
Contributors: 國立臺灣海洋大學:海洋環境化學與生態研究所
Keywords: Original Articles
Date: 2007
Issue Date: 2017-03-02T03:37:04Z
Publisher: Journal of Plankton Res
Abstract: Abstract:Although the key grazers on Synechococcus and other planktonic marine bacteria are generally thought to be nanoflagellates (both non-pigmented and pigmented) as well as ciliates, we previously found in our western subtropical Pacific coastal study site that ciliates exerted almost no grazing pressure. In this study, we used fluorescently labeled particles (FLP) as Synechococcus-sized mimics to examine the contribution of pigmented (may include autotrophic and mixotrophic spp.) versus non-pigmented (heterotrophic) nanoflagellate grazing to Synechococcus morality. During the warm season from June to September, > 50% of the nanoflagellate population was pigmented (1.8–2 × 103 versus 1.2–1.6 × 103 cells mL−1). Consumption, or clearance rates per pigmented nanoflagellate, varied considerably (0.50–46.90 nL cell−1 h−1), with the highest rates in June. Raw data showed pigmented nanoflagellate grazing to account for 2–94% (mean 43%) of Synechococcus production from May to October. Pigmented nanoflagellates consumed 12.5-fold more Synechococcus than did ciliates. This study provides the first evidence that pigmented nanoflagellates are key grazers of Synechococcus populations in subtropical western Pacific coastal waters.
Relation: 29(1), pp.71-77
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/41566
Appears in Collections:[海洋環境與生態研究所] 期刊論文

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