Grazing Pressure by Ciliates on the Nanoflagellate Community in a Subtropical Pelagic Continental Shelf Ecosystem: Small Ciliates (of < 45 μm) are Major Consumers of the Nanoflagellate Community
Grazing Pressure by Ciliates on the Nanoflagellate Community in a Subtropical Pelagic Continental Shelf Ecosystem: Small Ciliates (of < 45 μm) are Major Consumers of the Nanoflagellate Community
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发表时间：
2012-12
影响因子：
1.6
通讯作者：
Jun-Yu Chen;A. Tsai;G. Gong;Kuo-Ping Chiang
中科院分区：
文献类型：
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作者：
Jun-Yu Chen;A. Tsai;G. Gong;Kuo-Ping Chiang
2010年8月，在东海南部沿着陆架断面上研究了纳米鞭毛虫和纤毛虫的营养关系。利用4 μm荧光标记微珠（FLB）对6个站位的纤毛虫群落进行了短期摄食率测定。沿样带沿着有3个带：陆架内带、陆架中带和上升流带。在所有站点，等效球径（ESD）< 45 μm的纤毛虫，包括Strombidium spp.，球兰属，Laboea spp.，Tontonia spp.，和纤毛虫，是纤毛虫群落中最丰富的类群（79%-95%）。凤凰螺属摄食率为59-374只/d，球孢子虫属（Strobilidium spp.）鞭毛虫26-268只/d，Laboea spp.和Tontonia spp.鞭毛虫数量为18-289只/d，纤毛虫数量为58-249只/d。< 45 μm的纤毛虫是最重要的微型浮游食草动物，在内陆架和近海沃茨中分别消耗了近100%和43%的微型鞭毛虫产量。夏季，纤毛虫是纳米鞭毛虫的主要营养级消费者之一，尤其是在内陆沃茨水域。
Trophic relations between nanoflagellates and ciliates in the southern East China Sea (ECS) were studied along a crossshelf transect in Aug. 2010. Short-term experiments with 4-μm fluorescently labeled beads (FLBs) were used to estimate ingestion rates of the ciliate community at 6 stations. There were 3 zones along the transect: inner-shelf, mid-shelf, and upwelling zones. At all sites, ciliates of ＜ 45 μm in equivalent spherical diameter (ESD), including Strombidium spp., Strobilidium spp., Laboea spp., Tontonia spp., and tintinnids, were the most abundant group (79%-95%) of the ciliate community. Strombidium spp. ingestion rates ranged 59-374 flagellates/ciliate/d, Strobilidium spp. ranged 26-268 flagellates/ciliate/d, Laboea spp. and Tontonia spp. ranged 18-289 flagellates/ciliate/d, and tintinnids ranged 58-249 flagellates/ciliate/d. Ciliate of ＜ 45 μm in ESD were the most important nanoplankton grazers, consuming nearly 100% of nanoflagellate production in inner-shelf and 43% in offshore oceanic waters. In summer, ciliates are one of the main trophic level consumers of nanoflagellates, especially in inner-shelf waters.