Toxic effects and mechanisms of Prymnesium parvum (Haptophyta) isolated from the Pearl River Estuary, China

doi:10.1016/j.hal.2020.101844

	Toxic effects and mechanisms of Prymnesium parvum (Haptophyta) isolated from the Pearl River Estuary, China
	Qin, Junlian 1,2; Hu, Zhangxi3 ; Zhang, Qun 1; Xu, Ning 1; Yang, Yufeng 1,2
	2020-06-01
发表期刊	HARMFUL ALGAE
ISSN	1568-9883
卷号	96 页码:9
通讯作者	Xu, Ning(txuning@163.com) ; Yang, Yufeng(tyyf@jnu.edu.cn)
摘要	Prymnesium (Haptophyta) species form toxic blooms throughout the world resulting in large fish-kills and economic losses. A culture of Prymnesium parvum JX12 was isolated and established from the Pearl River Estuary of China. The toxic characteristics of JX12 to aquatic animals were investigated, considering the effects of temperature, salinity, and nutrients. Cultures of JX12 exhibited significant lethal toxicity to the fish, Mugil sp., M. soiuy, M. cephalus, Ctenogobius sp. and Chrysiptera parasema, and the brine shrimp, Anemia sahna, but no significant effects on the shellfish Ruditapes variegatus and the shrimp Penacus orientalis. The toxicity of JX12 to A. salina increased with growth of the culture. The decline phase displayed the strongest potency, followed by the stationary phase, exponential phase and lag phase. Also, there was a significant difference in toxicity among culture fractions of JX12 compared to whole-cell culture. For example, the toxicity of a cell-free culture filtrate on brine shrimp was reduced by 50% by the end of the experiment, while the sonicated and re-suspended cultures caused near 100% mortality. The toxicity of JX12 was also regulated by environmental factors such as temperature, salinity and nutrients. The strongest toxicities were at moderate water temperature (20-25 degrees C) and salinity (35 psu). The toxicity was reduced significantly at higher or lower temperatures and salinities. Furthermore, the toxicity of JX12 was greatly enhanced when ambient nutrients were deficient. Due to the potent toxicity of JX12 to multiple aquatic animals, especially fish and zooplankton, this species threatens the food web and trophic dynamics of coastal ecosystems. This study suggested that the ability to produce and release toxin(s) is an effective competition strategy for P. parvum to suppress predators and sympatric competitors and thus form blooms.
关键词	Prymnesium parvum Aquatic animals Toxic effects Mechanisms Pearl River Estuary
DOI	10.1016/j.hal.2020.101844
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China (NSFC)[41576159] ; National Natural Science Foundation of China (NSFC)[41977268] ; National Natural Science Foundation of China (NSFC)[61533011] ; Pilot National Laboratory for Marine Science and Technology (Qingdao)[LMEES-YTSP-2018-01-04]
WOS研究方向	Marine & Freshwater Biology
WOS类目	Marine & Freshwater Biology
WOS记录号	WOS:000541912700011
出版者	ELSEVIER
引用统计	被引频次：10[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/167793
专题	海洋生态与环境科学重点实验室
通讯作者	Xu, Ning; Yang, Yufeng
作者单位	1.Jinan Univ, Key Lab Eutrophicat & Red Tide Prevent Guangdong, Dept Ecol, Guangzhou 510632, Peoples R China 2.Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai 519000, Peoples R China 3.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Qin, Junlian,Hu, Zhangxi,Zhang, Qun,et al. Toxic effects and mechanisms of Prymnesium parvum (Haptophyta) isolated from the Pearl River Estuary, China[J]. HARMFUL ALGAE,2020,96:9.
APA	Qin, Junlian,Hu, Zhangxi,Zhang, Qun,Xu, Ning,&Yang, Yufeng.(2020).Toxic effects and mechanisms of Prymnesium parvum (Haptophyta) isolated from the Pearl River Estuary, China.HARMFUL ALGAE,96,9.
MLA	Qin, Junlian,et al."Toxic effects and mechanisms of Prymnesium parvum (Haptophyta) isolated from the Pearl River Estuary, China".HARMFUL ALGAE 96(2020):9.

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