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在密集农业中,Streptococcus agalactiae 血清型VII,一种新兴的病原体影响了蛇皮 (Trichogaster pectoralis)
Theeraporn Pulpipat1, Visanu Boonyawiwat1, Pattra Moonjit1
1Department of Farm Resources and Production Medicine, Faculty of Veterinary Medicine, Kasetsart University, Kamphaeng Saen Campus, Nakorn Pathom 73140, Thailand.
Transboundary and emerging diseases
|April 30, 2025
概括
在泰国,Streptococcus agalactiae血清型VII导致了养殖蛇皮的显著死亡率. 这种细菌感染导致严重的病理变化和经济损失,需要改善农场生物安全和鱼类移动控制.
科学领域:
- 水产养殖是水产养殖的一种方式.
- 鱼类病理学 鱼类病理学
- 细菌学 细菌学是一门学科.
背景情况:
- 蛇皮 (Trichogaster pectoralis) 水产养殖在东南亚正在扩大.
- 密集型养殖实践与无法解释的鱼类死亡率和经济损失有关.
- 不寻常的死亡事件促使对致病原体进行调查.
研究的目的:
- 为了确定来自泰国中部农场的蛇皮古拉米死亡的原因.
- 描述已识别的病原体,并评估其毒性.
- 为疾病控制和预防战略提供信息.
主要方法:
- 在22个受影响的农场进行流行病学调查.
- 尸体解剖,组织病理学和微生物学的隔离从垂死的鱼.
- 使用质谱,PCR,PFGE和血清型定型进行细菌鉴定和鉴定.
- 实验性挑战研究以确认病原性.
主要成果:
- 细菌杆菌 (Streptococcus agalactiae) 经常从患病的鱼中分离出来.
- 所有的分离物属于血清型VII,与之前在其他鱼类中识别的血清型不同.
- 实验性感染S. agalactiae血清型VII导致高死亡率 (超过60%) 和特征性病理症状.
- 病变包括器官膨胀,出血,心膜炎和中枢神经系统拥堵.
结论:
- 毒杆菌 (Streptococcus agalactiae) 血清型VII是一种致病性病原体,对养殖蛇皮鼠的显著死亡率负责.
- 调查结果强调需要加强生物安全措施和控制水产养殖中的鱼类流动.
- 这项研究为管理这种重要的水产养殖物种中链球菌病提供了关键数据.
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