<i>Karenia mikimotoi</i> induced adverse impacts on abalone <i>Haliotis discus hannai</i> in Fujian coastal areas, China

doi:10.1017/S0025315424000353

	Karenia mikimotoi induced adverse impacts on abalone Haliotis discus hannai in Fujian coastal areas, China
	Liao, Ling-Zhi 1,2; Lin, Jia-Ning1,2,3 ; Ding, Xin-Shu 1,2; Feng, Song3 ; Yan, Tian 3
	2024-04-29
发表期刊	JOURNAL OF THE MARINE BIOLOGICAL ASSOCIATION OF THE UNITED KINGDOM
ISSN	0025-3154
卷号	104 页码:9
通讯作者	Lin, Jia-Ning(tianyancas@163.com) ; Yan, Tian(linjianing@sdu.edu.cn)
摘要	Large-scale outbreaks of the dinoflagellate Karenia mikimotoi caused substantial mortality of abalone, Haliotis discus hannai in Fujian, China in 2012, resulting in 20 billion in economic losses to abalone industries. However, the mechanism behind the mortality, especially the reaction of abalone to this microalgal toxicity, which possibly differed significantly from the former 'fish killer' strain in the South China Sea (SCS). Our study revealed that K. mikimotoi FJ-strain exhibited a four-fold higher haemolytic toxicity than the SCS-strain during the late exponential phase. At the microalgal cell density of 3 x 10(7) cell L-1, the FJ-strain caused abalone mortality of 67% in 48 h, with decreased granulocyte-hyalinocyts ratio and phagocytic activity by 58.96% and 75.64%, respectively, increased haemocyte viability by 4.8-fold and severe gill damage. The toxic effect only worked for the haemolytic toxicity from active algal cells, which were probably produced under the contact of algal cells and abalone gills. However, under exposure to the SCS-strain, more than 80% of individuals survived under aeration. The results indicated that FJ-strain was a new K. mikimotoi ecotype with stronger toxicity. It evoked severe effects, with complete abalone mortality within 24 h under the cascading effect of non-aeration (dissolved oxygen declined to 2.0 mg L-1), when exposed to K. mikimotoi FJ-strain at the above density. Thus, apart from the microalgal toxicity, DO depletion exacerbated the mortality of abalone in the experiment. The massive abalone mortalities in Fujian were probably caused by the combination of microalgal toxic effects and oxygen depletion, leading to immunological depression and histopathological disruption.
关键词	adverse impacts abalone Haliotis discus hannai Karenia mikimotoi bloom
DOI	10.1017/S0025315424000353
收录类别	SCI
语种	英语
资助项目	Open Fund of CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences[KLMEES201801] ; National Nature Science Foundation of China (NSFC)[41476102]
WOS研究方向	Marine & Freshwater Biology
WOS类目	Marine & Freshwater Biology
WOS记录号	WOS:001209399600001
出版者	CAMBRIDGE UNIV PRESS
WOS关键词	FLOW-CYTOMETRIC ANALYSIS ; RUDITAPES-PHILIPPINARUM ; CRASSOSTREA-VIRGINICA ; RED-TIDE ; IMMUNE-RESPONSES ; VARYING PARASITE ; DISSOLVED-OXYGEN ; PERKINSUS-OLSENI ; EASTERN OYSTERS ; MANILA CLAMS
引用统计
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/185593
专题	海洋生态与环境科学重点实验室
通讯作者	Lin, Jia-Ning; Yan, Tian
作者单位	1.Shandong Univ, Sch Environm Sci & Engn, Qingdao 266237, Peoples R China 2.Shandong Univ, Inst Ecoenvironm Forens, Qingdao 266237, Peoples R China 3.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China
通讯作者单位	海洋生态与环境科学重点实验室
推荐引用方式 GB/T 7714	Liao, Ling-Zhi,Lin, Jia-Ning,Ding, Xin-Shu,et al. Karenia mikimotoi induced adverse impacts on abalone Haliotis discus hannai in Fujian coastal areas, China[J]. JOURNAL OF THE MARINE BIOLOGICAL ASSOCIATION OF THE UNITED KINGDOM,2024,104:9.
APA	Liao, Ling-Zhi,Lin, Jia-Ning,Ding, Xin-Shu,Feng, Song,&Yan, Tian.(2024).Karenia mikimotoi induced adverse impacts on abalone Haliotis discus hannai in Fujian coastal areas, China.JOURNAL OF THE MARINE BIOLOGICAL ASSOCIATION OF THE UNITED KINGDOM,104,9.
MLA	Liao, Ling-Zhi,et al."Karenia mikimotoi induced adverse impacts on abalone Haliotis discus hannai in Fujian coastal areas, China".JOURNAL OF THE MARINE BIOLOGICAL ASSOCIATION OF THE UNITED KINGDOM 104(2024):9.