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首页> 外文期刊>Aquaculture Research >Emerging pathogens caused disease and mortality in freshwater mussels,Hyriopsis cumingii,in China
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Emerging pathogens caused disease and mortality in freshwater mussels,Hyriopsis cumingii,in China

机译：新兴病原体引起了淡水贻贝，寒露植物症的疾病和死亡率在中国

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摘要

In August 2019, massive mortalities of culturedHyriopsis cumingiioccurred in a local shellfish breeding experimental base in Chongqing, China. In this report, we identified 14 isolates from cultured mussels in mortality events and demonstrated that these strains caused mortality from 9% to 97%. Significant mussel mortality (p < .05) was observed in association with most isolates after bacterial challenge; however, considerable variation in the virulence of different isolates was noted, with survival ranging from 3% to 88% after 7 days. The most virulent strains (HOP3 and GL1) in haemolymph and tissues were identified asStenotrophomonas maltophiliaandAeromonas veroniibased on biochemical and 16S rDNA sequence analysis. The LD(50)values of HOP3 and GL1 were found to be 2.45 x 10(6) CFU/g (body weight) and 2.24 x 10(5) CFU/g (body weight) respectively. Histopathology ofH. cumingiiinfected withS. maltophiliaandA. veroniidisplayed degeneration of muscle fibres and gill necrosis. We tested the antibiotic susceptibility of the two isolates and found that HOP3 was multidrug-resistant. Growth optimization study revealed that both isolates remained surviving across wide environmental ranges. Our data lay the foundation for the pathogenic mechanism of mussel bacterial diseases, and they also suggest that effective control measures are worth further investigation.
机译：2019年8月，在中国重庆的当地贝类育种实验基地，愈合的巨大成年人。在本报告中，我们确定了来自死亡事件中培养的贻贝的14个分离株，并证明这些菌株导致了9％至97％的死亡率。在细菌挑战后与大多数分离物相关联的显着贻贝死亡率（p <.05）;然而，注意到不同分离株的毒力的相当大的变化，其存活率在7天后的3％至88％范围为3％至88％。溶血性毒性菌株（HOP3和GL1）鉴定在生物化学和16S rDNA序列分析中呈胰岛科疗法疗法疗法蛋白酸疗法疗法。 HOP3和GL1的LD（50）值被发现为2.45×10（6）CFU / g（体重）和2.24×10（5）CFU / g（体重）。组织病理学。用来篡改。麦芽粒子。 Veroniidisplayed肌纤维和鳃坏死的退化。我们测试了两种分离物的抗生素敏感性，发现HOP3是多药抗性的。增长优化研究表明，两种分离株仍然存在宽阔的环境范围。我们的数据为贻贝细菌疾病的致病机制奠定了基础，他们还表明有效的控制措施值得进一步调查。

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  • 来源
    《Aquaculture Research》 |2020年第12期|共10页
  • 作者

    Yang Qinglin; Li Wenyu; Du Chunying; Liu Yang; Ma Shang; Yu Xiaobo; Yao Weizhi; Wu Zhengli;

  • 作者单位

    Southwest Univ Key Lab Freshwater Fish Reprod &

    Dev Minist Educ Coll Fisheries Res Ctr Fishery Resources &

    Enviro Chongqing Peoples R China;

    Southwest Univ Key Lab Freshwater Fish Reprod &

    Dev Minist Educ Coll Fisheries Res Ctr Fishery Resources &

    Enviro Chongqing Peoples R China;

    Southwest Univ Key Lab Freshwater Fish Reprod &

    Dev Minist Educ Coll Fisheries Res Ctr Fishery Resources &

    Enviro Chongqing Peoples R China;

    Southwest Univ Key Lab Freshwater Fish Reprod &

    Dev Minist Educ Coll Fisheries Res Ctr Fishery Resources &

    Enviro Chongqing Peoples R China;

    Southwest Univ Key Lab Freshwater Fish Reprod &

    Dev Minist Educ Coll Fisheries Res Ctr Fishery Resources &

    Enviro Chongqing Peoples R China;

    Southwest Univ Key Lab Freshwater Fish Reprod &

    Dev Minist Educ Coll Fisheries Res Ctr Fishery Resources &

    Enviro Chongqing Peoples R China;

    Southwest Univ Key Lab Freshwater Fish Reprod &

    Dev Minist Educ Coll Fisheries Res Ctr Fishery Resources &

    Enviro Chongqing Peoples R China;

    Southwest Univ Key Lab Freshwater Fish Reprod &

    Dev Minist Educ Coll Fisheries Res Ctr Fishery Resources &

    Enviro Chongqing Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 水产、渔业;
  • 关键词

    Aeromonas veronii; Hyriopsis cumingii; pathogenicity; Stenotrophomonas maltophilia;

    机译：veronii飞机;Hyriopsis fly;致病性;斯滕科莫洛尼亚野生疗法;

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