在养殖的尼罗河鱼 (Oreochromis niloticus) 中夏季死亡综合征细菌病原体
Fawzy I Magouz1, Eman Moustafa Moustafa2, Etab M Abo-Remela3,4
1Fish Nutrition, Faculty of Agriculture, Kafrelsheikh University, Kafr El-Sheikh, Egypt.
Open veterinary journal
|April 18, 2024
概括
养殖尼罗河鱼的夏季死亡率通常是由Aeromonas hydrophila,Vibrio和Streptococcus iniae引起的. 这些细菌感染是可以用西普罗夫洛克萨,亨塔米辛和氨基醇治疗的,但对阿莫西西林有耐药性.
科学领域:
- 水生动物的健康状况.
- 细菌学 细菌学是一门学科.
- 鱼类水产养殖 鱼类水产养殖
背景情况:
- 夏季死亡率对养鱼产业构成重大经济挑战.
- 高温可以加剧养殖鱼类中的细菌感染.
研究的目的:
- 确定负责尼罗河鱼夏季死亡率的主要细菌病原体.
- 评估孤立细菌菌株对抗生素的敏感性.
主要方法:
- 收集了600个死亡的尼罗河鱼样本,显示出死亡综合征症状.
- 使用表型,生化和分子分析 (PCR) 隔离和识别细菌病原体.
- 在孤立的细菌菌株上进行了抗生素敏感性测试.
主要成果:
- 确定了六种细菌物种:空气球菌,振动球菌,链球菌,伪球菌,球菌和Edwardsiella spp.
- 它们包括Aeromonas spp.,Vibrio spp.和Streptococcus spp.等. 是最常见的病原体.
- 通过PCR证实了Aeromonas hydrophila,Vibrio spp.和Streptococcus iniae的存在.
- 细菌分离物对西普罗夫洛克萨 (CIP),胺素 (CN) 和氨基醇 (C) 呈现出高度敏感性,但对阿莫西西林 (AMX) 呈现出耐药性.
结论:
- 水虫,菌和Streptococcus iniae是导致尼罗河鱼夏季死亡率的关键病原体.
- 有效的抗生素治疗包括CIP,CN和C,而AMX效果较差.
- 改善鱼类养殖和环境管理对于减轻疾病爆发和经济损失至关重要.
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