Hematodinium infections in cultured Chinese swimming crab, Portunus trituberculatus, in northern China

doi:10.1016/j.aquaculture.2013.02.022

	Hematodinium infections in cultured Chinese swimming crab, Portunus trituberculatus, in northern China
	Li, Caiwen1 ; Song, Shuqun 1; Liu, Yun 1; Chen, Tiantian1,2 ; Li, CW
	2013-06-01
发表期刊	AQUACULTURE
ISSN	0044-8486
卷号	396 页码:59-65
文章类型	Article
摘要	Since 2004, the parasitic dinoflagellates Hematodinium emerged as causative agent of the "milky blood disease" in cultured Portunus trituberculatus, Scylla serrata and Exopalaemon carinicauda along the coastal areas of southern China; while, no Hematodinium infections had been reported in northern China. We sampled P. trituberculatus in polyculture ponds and adjacent coastal waters from two sites in Shandong Peninsula, the major culture region in northern China which contributes to one third of the national gross outcome of the crab species. Hematodinium infections were identified in 10% of P. trituberculatus randomly sampled from polyculture ponds, while no infections were observed in wild crabs collected from adjacent coastal waters. Filamentous trophonts and amoeboid trophonts were observed in diseased crabs. The Hematodinium sp. shares similar morphologic features and causes typical pathological changes in hepatopancreas, heart, and muscles of infected hosts as other Hematodinium spp. The laboratory trials indicated that this parasite was infectious and caused pathological alterations to crab hosts as those diseased crabs from culture ponds. Molecular analysis indicated that the isolates were closely related to those reported in southern China. Our findings indicate an alarming broad distribution of the infectious pathogen along the coastal areas of China. The polyculture pond system widely used in major culture regions in China may prompt transmission or spread of Hematodinium among susceptible hosts, which urges pressing investigation of its major routes of transmission in such culture system along with better understanding of its life cycle. (c) 2013 Elsevier B.V. All rights reserved.; Since 2004, the parasitic dinoflagellates Hematodinium emerged as causative agent of the "milky blood disease" in cultured Portunus trituberculatus, Scylla serrata and Exopalaemon carinicauda along the coastal areas of southern China; while, no Hematodinium infections had been reported in northern China. We sampled P. trituberculatus in polyculture ponds and adjacent coastal waters from two sites in Shandong Peninsula, the major culture region in northern China which contributes to one third of the national gross outcome of the crab species. Hematodinium infections were identified in 10% of P. trituberculatus randomly sampled from polyculture ponds, while no infections were observed in wild crabs collected from adjacent coastal waters. Filamentous trophonts and amoeboid trophonts were observed in diseased crabs. The Hematodinium sp. shares similar morphologic features and causes typical pathological changes in hepatopancreas, heart, and muscles of infected hosts as other Hematodinium spp. The laboratory trials indicated that this parasite was infectious and caused pathological alterations to crab hosts as those diseased crabs from culture ponds. Molecular analysis indicated that the isolates were closely related to those reported in southern China. Our findings indicate an alarming broad distribution of the infectious pathogen along the coastal areas of China. The polyculture pond system widely used in major culture regions in China may prompt transmission or spread of Hematodinium among susceptible hosts, which urges pressing investigation of its major routes of transmission in such culture system along with better understanding of its life cycle. (c) 2013 Elsevier B.V. All rights reserved.
关键词	Parasitic Dinoflagellate Crab Aquaculture Transmission Life Cycle Phylogenetic Analysis
学科领域	Fisheries ; Marine & Freshwater Biology
DOI	10.1016/j.aquaculture.2013.02.022
URL	查看原文
收录类别	SCI
语种	英语
WOS研究方向	Fisheries ; Marine & Freshwater Biology
WOS类目	Fisheries ; Marine & Freshwater Biology
WOS记录号	WOS:000318553500010
WOS关键词	LOBSTER NEPHROPS-NORVEGICUS ; PARASITIC DINOFLAGELLATE ; CALLINECTES-SAPIDUS ; CHIONOECETES-BAIRDI ; DEVELOPMENTAL CYCLE ; BLUE CRABS ; PEREZI ; NEWFOUNDLAND ; CRUSTACEANS ; MORTALITY
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
引用统计	被引频次：43[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/337002/16475
专题	海洋生态与环境科学重点实验室
通讯作者	Li, CW
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China 2.Ocean Univ China, Coll Environm Sci & Engn, Qingdao 266061, 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, Caiwen,Song, Shuqun,Liu, Yun,et al. Hematodinium infections in cultured Chinese swimming crab, Portunus trituberculatus, in northern China[J]. AQUACULTURE,2013,396:59-65.
APA	Li, Caiwen,Song, Shuqun,Liu, Yun,Chen, Tiantian,&Li, CW.(2013).Hematodinium infections in cultured Chinese swimming crab, Portunus trituberculatus, in northern China.AQUACULTURE,396,59-65.
MLA	Li, Caiwen,et al."Hematodinium infections in cultured Chinese swimming crab, Portunus trituberculatus, in northern China".AQUACULTURE 396(2013):59-65.

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