文献类型： 外文期刊
作者： Gong, Miao 1 ; Xie, Guosi 2 ; Wang, Hailiang 3 ; Li, Xinshu 1 ; Li, Ang 2 ; Wan, Xiaoyuan 2 ; Huang, Jingxian 4 ; Shi, Chengyin 2 ; Zhang, Qingli 2 ; Huang, Jie 2 ;
作者机构： 1.Jiangsu Ocean Univ, Sch Marine Sci & Fisheries, Lian Yungang, Peoples R China
2.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Key Lab Marine Aquaculture Dis Control,Minist Agr, Key Lab Marine Aquaculture Epidemiol & Biosecur, Qingdao, Peoples R China
3.Pilot Natl Lab Marine Sci & Technol Qingdao, Lab Marine Fisheries Sci & Food Prod Proc, Qingdao, Peoples R China
4.Chinese Acad Fishery Sci, Xiaying Enhancement & Expt Stn, Weifang, Peoples R China
5.Network Aquaculture Ctr Asia Pacific, Bangkok, Thailand
关键词： Hematodinium; Hemigrapsus takanoi; marine crustacean; parasitic dinoflagellates; transmission
期刊名称：JOURNAL OF FISH DISEASES （ 影响因子：2.58； 五年影响因子：2.64 ）
ISSN： 0140-7775
年卷期： 2023 年 46 卷 1 期
页码：
收录情况： SCI
摘要： The parasitic dinoflagellates of the genus Hematodinium have been considered one of the most important emerging pathogens for a broad range of marine crustaceans around the world. In China, frequent outbreaks of Hematodinium infections have caused serious economic losses for local farmers since 2004. Wild crabs were recently indicated to play a vital role in the transmission and spreading of the Hematodinium disease in polyculture pond systems. Based on PCR amplification and histopathological examination, we demonstrated that H. perezi can naturally infect a wild crab species, Hemigrapsus takanoi, which were collected from the waterways located on the coast of Rizhao or Weifang, Shandong Peninsula, China. According to the sequence similarity analysis and phylogenetic analysis, the Hematodinium isolates were identified as H. perezi and belonged to genotype II. The prevalence of H. perezi ranged from 3.3% to 5.7% in H. takanoi originating from Rizhao (n = 165 wild crabs) and from 0.9% to 20.0% in that originating from Weifang (n = 1386 wild crabs), respectively. To our knowledge, H. takanoi is, for the first time, reported as a new host for Hematodinium. Given the wide distribution of H. takanoi on the coasts along the Shandong Peninsula and the relative high prevalence of infection we monitored in our study, we speculate that H. takanoi contributes to the introducing and spreading parasitic Hematodinium between ponds via waterways in a poly-culturing system. Findings in this study broaden the host range of this parasite and expand the scope of our surveillance for Hematodinium disease in China.
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