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野生白爪的慢性Aphanomyces astaci感染:对繁殖计划的风险和影响

Andrea Basso¹, Valentina Paolini¹, Laura Martín-Torrijos²

¹Istituto Zooprofilattico Sperimentale delle Venezie, Centro Specialistico Ittico, Legnaro Padova, Italy.

Journal of invertebrate pathology

|August 22, 2025

概括

在欧洲的鱼种群中发现了慢性Aphanomyces astaci感染. 引入受感染的繁殖场引发了灾难性的瘟疫,强调了保护工作的关键健康监测.

科学领域:

水生态学
病原体生物学
保护遗传学

背景情况:

这是一种严重影响欧洲的疾病.
越来越多地发现A. astaci的低毒性菌株在本地欧洲的鱼中.
了解病原体与宿主之间的动态对于保护易受感染的鱼种类至关重要.

研究的目的:

调查白爪种群中Aphanomyces astaci的流行和影响.
在一个保护繁殖设施中发现瘟疫的源头和原因.
评估育种群健康监测的有效性,以防止疾病的引入.

主要方法:

使用分子测试 (RAPD-PCR,mtDNA,核标记物) 来检测和描述A. astaci.
在9年的时间里,对19个野生鱼群进行了纵向监测.
在一个养殖设施爆发瘟疫情的流行病学调查.

主要成果:

在19个监测群体中,在8个群体中检测到慢性A. astaci感染.
两个群体表现出持久的A. astaci感染,没有显著的死亡率.
引入慢性感染的繁殖群导致了严重的瘟疫和繁殖设施的高死亡率.

结论:

在繁殖群中未被发现的慢性A. astaci感染对保护计划构成重大风险.
严格检查繁殖动物的健康状况对于防止现场保护设施的疾病爆发至关重要.
管理策略必须考虑病原体的存在和潜在的压力因素,以有效地保护.

关键词:

阿斯特罗波塔莫比乌斯 (Austropotamobius pallipes) 综合体瘟疫毒性较低保护物种一组A

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