Experimental clearance rates of Aurelia coerulea ephyrae and medusae,and the predation impact on zooplankton in Jiaozhou Bay

作     者：WANG Pengpeng ZHANG Fang SUN Song WANG Weicheng WAN Aiyong LI Chaolun WANG Pengpeng;ZHANG Fang;SUN Song;WANG Weicheng;WAN Aiyong;LI Chaolun

作者机构：CAS Key Laboratory of Marine Ecology and Environmental SciencesInstitute of OceanologyChinese Academy of SciencesQingdao 266071China Laboratory for Marine Ecology and Environmental SciencesQingdao National Laboratory for Marine Science and TechnologyQingdao 266071China University of Chinese Academy of SciencesBeijing 100049China Jiaozhou Bay Marine Ecosystem Research StationChinese Academy of SciencesQingdao 266071China Center for Ocean Mega-ScienceChinese Academy of SciencesQingdao 266071China 

出 版 物：《Journal of Oceanology and Limnology》 (海洋湖沼学报（英文）)

年 卷 期：2020年第38卷第4期

页      面：1256-1269页

核心收录：

学科分类：0710[理学-生物学] 0908[农学-水产] 07[理学] 0707[理学-海洋科学] 0815[工学-水利工程] 0713[理学-生态学] 

基　　金：the Marine S&T Fund of Shandong Province for Pilot National Laboratory for Marine Science and Technology(Qingdao)(No.2018SDKJ0504-3) the National Key Research and Development Program of China(No.2017YFC1404405) Mount Tai Scholar Climbing Plan to SUN Song 

主　　题：scyphomedusae predation pressure prey selection zooplankton control jellyfish bloom 

摘      要：The population explosion of jellyfish Aurelia coerulea occurred in Jiaozhou Bay,China in *** potential predation impact of *** on zooplankton was *** clearance potential and residence time(t 1/2)for copepods were calculated from laboratory clearance rates and measurements of jellyfish size and abundance from May to August 2009 in Jiaozhou *** rates varied widely with prey organisms,but they were not significantly different among various prey *** captured rotifers,fish larvae and hydromedusae more efficiently than fish eggs,copepods and *** captured rotifers and hydromedusae more efficiently than fish larvae and *** rate linearly increased with the cross sectional area of ***(size from 0.3 to 7.1 cm).Water temperature also had a marked effect on clearance rate and this was related to the increased beat frequency as water temperature *** early May 2009,*** potentially cleared the volume of water in the Bay less than 0.001 times a day,but this value was estimated to be more than 0.3 times a day in *** t 1/2 for copepods was less than 6 d in June and *** of copepods,hydromedusae and chaetognaths were extremely low in 2009 compared to 2008 and 2010(jellyfish non-bloom years).Large predation pressure by the *** population occurred to control zooplankton communities in Jiaozhou ***,when present at a high population level,can be a keystone species in Jiaozhou Bay and control the trophic structure here.