Detrimental impacts of the dinoflagellate Karenia mikimotoi in Fujian coastal waters on typical marine organisms

doi:10.1016/j.hal.2016.11.011

IOCAS-IR > 实验海洋生物学重点实验室

	Detrimental impacts of the dinoflagellate Karenia mikimotoi in Fujian coastal waters on typical marine organisms
	Li, Xiaodong1,2 ; Yan, Tian 1; Lin, Jianing1,2,3,4 ; Yu, Rencheng 1; Zhou, Mingjiang 1
	2017
发表期刊	HARMFUL ALGAE
卷号	61 页码:1-12
文章类型	Article
摘要	Blooms of the toxic dinoflagellate Karenia mikimotoi (K. mikimotoi) have occurred frequently in the East China Sea in recent decades and were responsible for massive mortalities of abalones in Fujian coastal areas in 2012, however, little is known about the effects of these blooms on other marine organisms. In this study, the toxic effects and the possible mechanisms of toxicity of K. mikimotoi from Fujian coastal waters on typical marine organisms at different trophic levels, including zooplankton (Brachionus plicatilis, Artemia salina, Calanus sinicus, and Neomysis awatschensis) and aquaculture species (Penaeus vannamei and Scophthalmus maximus) were investigated. At a bloom density of 3 x 10(4) cells/mL, the Fujian strain of K. mikimotoi significantly affected the tested organisms, which had mortality rates at 96 h of 100, 23, 20, 97, 33, and 53%, respectively. Moreover, the intact cell suspension was toxic to all tested species, whereas cell-free culture and the ruptured cell suspension had no significant effects on the tested organisms. Possible mechanisms for this toxic effect, including reactive oxygen species (ROS) and hemolytic toxins, were evaluated. For K. mikimotoi, 0.014 +/- 0.004 OD/(10(4) cells) superoxide (O-2(-)) and 3.00 +/- 0.00 nmol/(10(4) cells) hydrogen peroxide (H2O2) were measured, but hydrogen peroxide did not affect rotifers at that concentration, and rotifers were not protected from the lethal effects of K. mikimotoi when the enzymes superoxide dismutase and catalase were added to counteract the ROS. The lipophilic extract of K. mikimotoi had a hemolytic effect on rabbit erythrocytes but exhibited no significant toxicity. These results suggest that this strain of K. mikimotoi can have detrimental effects on several typical marine organisms and that its toxicity may be associated with intact cells but is not related to ROS or hemolytic toxins. (C) 2016 Elsevier B.V. All rights reserved.
关键词	Karenia Mikimotoi Lethal Effect Marine Organisms Reactive Oxygen Species Hemolytic Activity
DOI	10.1016/j.hal.2016.11.011
收录类别	SCI
语种	英语
WOS记录号	WOS:000392890000001
引用统计	被引频次：72[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
版本	出版稿
条目标识符	http://ir.qdio.ac.cn/handle/337002/136309
专题	实验海洋生物学重点实验室海洋生态与环境科学重点实验室
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Shandong, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Res Inst Environm Sci, State Key Lab Environm Criteria & Risk Assessment, Beijing 100012, Peoples R China 4.Chinese Res Inst Environm Sci, Lab Riverine Ecol Conservat & Technol, Beijing 100012, Peoples R China
第一作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Li, Xiaodong,Yan, Tian,Lin, Jianing,et al. Detrimental impacts of the dinoflagellate Karenia mikimotoi in Fujian coastal waters on typical marine organisms[J]. HARMFUL ALGAE,2017,61:1-12.
APA	Li, Xiaodong,Yan, Tian,Lin, Jianing,Yu, Rencheng,&Zhou, Mingjiang.(2017).Detrimental impacts of the dinoflagellate Karenia mikimotoi in Fujian coastal waters on typical marine organisms.HARMFUL ALGAE,61,1-12.
MLA	Li, Xiaodong,et al."Detrimental impacts of the dinoflagellate Karenia mikimotoi in Fujian coastal waters on typical marine organisms".HARMFUL ALGAE 61(2017):1-12.

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