Emerging anthropozoonotic threat in amphibian aquaculture: First report of Trichosporon asahii-induced epidemic with cross-species virulence
文献类型： 外文期刊
作者： Wang, Hongbing 1 ; Kuang, Guangwei 3 ; Zhang, Jie 1 ; Tian, Yao 1 ; Hu, Yazhou 4 ; Wang, Sha 5 ; Tang, Xiaoming 3 ; Jiang, Yanxia 4 ; Du, Lifei 1 ; Wei, Jiaxing 1 ; Liu, Junqi 1 ;
作者机构： 1.Hunan Acad Agr Sci, Hunan Inst Anim & Vet Sci, Changlang Rd 8, Changsha, Hunan, Peoples R China
2.Yuelushan Lab, Vet Lab, Changsha, Hunan, Peoples R China
3.Hunan Anim Dis Prevent & Control Ctr, Anim Dis Testing Lab, Changsha, Hunan, Peoples R China
4.Hunan Agr Univ, Coll Fisheries, Changsha, Hunan, Peoples R China
5.Cent South Univ, Xiangya Hosp, Changsha, Peoples R China
关键词： Trichosporon asahii; Bullfrog; Putrid skin; Zoonosis
期刊名称：AQUACULTURE REPORTS （ 影响因子：3.7； 五年影响因子：4.0 ）
ISSN： 2352-5134
年卷期： 2025 年 43 卷
页码：
收录情况： SCI
摘要： Trichosporon asahii, a fungal pathogen predominantly associated with immunocompromised humans, has now been identified as a novel pathogen in amphibian aquaculture. During a 2023 outbreak on a 300,000-individual bullfrog farm in Hunan Province, China, we documented 113,000 mortalities (37.7 % mortality rate) within 60 days, marking the first large-scale epidemic of putrid skin disease in commercial amphibians. Through Koch's postulate fulfillment - isolating seven T. asahii strains from lesions and reproducing disease in laboratoryinfected frogs - we confirmed its causative role. Notably, BALB/c murine models revealed systemic infections, demonstrating mammalian virulence potential. These findings redefine T. asahii as a transboundary pathogen requiring coordinated veterinary-medical interventions and provide epidemiological benchmarks for developing biosecurity protocols in intensive frog farming systems.
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