三亚湾近岸浮游纤毛虫群落的昼夜变化特征*

doi:10.11978/2016034

热带海洋学报 ›› 2017, Vol. 36 ›› Issue (1): 72-80.doi: 10.11978/2016034CSTR: 32234.14.2016034

三亚湾近岸浮游纤毛虫群落的昼夜变化特征^*

王有军^1,²(), 徐翠莲^1,², 胡思敏¹, 李涛^1,³, 刘胜¹()

1. 中国科学院南海海洋研究所, 中国科学院热带海洋生物资源与生态重点实验室, 广东广州 510301
2. 中国科学院大学, 北京 100049
3. 中国科学院海南热带海洋生物实验站, 海南三亚 572000

收稿日期:2016-04-05 修回日期:2016-05-13 出版日期:2017-01-18 发布日期:2017-01-19
作者简介:
作者简介：王有军(1990—), 男, 山东省日照市人, 硕士研究生, 从事浮游动物生态学研究。E-mail:wangyoujun13@mails.ucas.ac.cn
基金资助:
中国科学院战略性先导科技专项子课题(XDA13020102);国家自然科学基金项目(41276160);广东省科技计划项目(2015A020216013)

Diel variation of community structure of planktonic ciliates in coastal ecosystem of Sanya Bay

Youjun WANG^1,²(), Cuilian XU^1,², Simin HU¹, Tao LI^1,³, Sheng LIU¹()

1. Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
2. University of Chinese Academy of Sciences, Beijing 100049, China
3. Tropical Marine Biological Research Station in Hainan, Chinese Academy of Sciences, Sanya 572000, China

Received:2016-04-05 Revised:2016-05-13 Online:2017-01-18 Published:2017-01-19
Supported by:
Strategic Priority Research Programof the Chinese Academy of Sciences (XDA13020102);National Natural Science Foundation of China (41276160);Science and Technology plan Projects of Guangdong Province (2015A020216013)

摘要/Abstract

摘要：

浮游纤毛虫广泛分布于海洋环境中, 是连接微食物环和经典食物链的关键环节, 在生态系统的物质传递和能量流通中占据重要地位。为深入认识纤毛虫在热带海区的分布特征及其生态功能, 于2014年4月在三亚湾近岸海区设置昼夜连续监测站点, 分早晨(6:00)、中午(12:00)、傍晚(18:00)和夜晚(24:00)四个时间点分别采集浮游纤毛虫及环境因子检测样品, 并用分子生物学方法分析了表层水体浮游纤毛虫群落结构的昼夜变化特征。结果显示: 1)表层浮游纤毛虫多样性高, 共获得79条不同代表序列; 2)不同时间表层海水中浮游纤毛虫多样性差异显著, 表现为白天降低, 夜晚升高, 其多样性高低依次为: 早晨 [48个操作分类单元(operational taxonomic unit, OTU)] >夜晚 (37个OTU) > 傍晚 (32个OTU) > 中午 (29个OTU)。浮游纤毛虫群落结构表现出昼夜变化现象, 可能是因为不同类群纤毛虫具有不同的空间分布规律。

关键词: 三亚湾, 浮游纤毛虫, 多样性, 昼夜变化

Abstract:

Planktonic ciliates are widespread micro-zooplankton in marine ecosystem and are considered as a key link between microbial loop and classic food chain as they play important roles in transfer processes of material and energy in the ecosystem. To better understand the distribution and ecological function of planktonic ciliates in tropical ecosystem, ciliate samples were collected in the coastal waters of Sanya Bay at 6:00, 12:00, 18:00 and 24:00, respectively, in April 2014. Species diversity and community structure of ciliate from different times were analyzed by molecular detection based on species-specific primers. The results were as follows. 1) Planktonic ciliate showed high diversity, with about 79 operational taxonomic units (OTUs) detected. 2) Significant variation of species diversity was uncovered at different times during a day, showing a decrease trend in day time but increase trend at night time and the order was morning [48 OUTs(operational taxonomic units)] > night (37 OTUs) > evening (32 OTUs) >midday (29 OTUs). The reason may be that different ciliate populations have different distribution modes.

Key words: Sanya Bay, planktonic ciliates, diversity, diel variation

王有军, 徐翠莲, 胡思敏, 李涛, 刘胜. 三亚湾近岸浮游纤毛虫群落的昼夜变化特征^*[J]. 热带海洋学报, 2017, 36(1): 72-80.

Youjun WANG, Cuilian XU, Simin HU, Tao LI, Sheng LIU. Diel variation of community structure of planktonic ciliates in coastal ecosystem of Sanya Bay[J]. Journal of Tropical Oceanography, 2017, 36(1): 72-80.

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	Chl a含量/(μg∙L^-1)	POM/(mg∙L^-1)
早晨(6:00)	0.76	1.05
中午(12:00)	0.80	0.63
傍晚(18:00)	2.09	1.10
夜晚(24:00)	6.69	1.43

	送测克隆数	有效克隆数	辛普森指数	香农-威纳指数
早晨(6:00)	90	85	0.9686	3.685
中午(12:00)	70	63	0.9393	3.073
傍晚(18:00)	80	70	0.9359	3.107
夜晚(24:00)	80	77	0.9489	3.325
合计	320	295	---	---

三亚湾近岸浮游纤毛虫群落的昼夜变化特征^*

Diel variation of community structure of planktonic ciliates in coastal ecosystem of Sanya Bay

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