成功根除入侵的美国牛蛙导致新出现的病原体共感染

IF 7.7 1区 环境科学与生态学 Q1 BIODIVERSITY CONSERVATION
Blake R. Hossack, David Hall, Catherine L. Crawford, Caren S. Goldberg, Erin Muths, Brent H. Sigafus, Thierry Chambert
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引用次数: 0

摘要

宿主-病原体动力学的干预措施提供了强有力的关系测试,但它们仍然很少在多个群体中应用。12年前,美国牛蛙(Rana catesbeiana)入侵了一个野生动物保护区,在那里重新引入了受到联邦威胁的奇里卡华豹蛙(R.chiricahuensis),之后,管理人员发起了一项景观范围的根除工作,以帮助确保本土物种的持续恢复。我们在2016年秋季至2020-2021年冬季期间,对19个根除点和18个对照点进行了前后控制影响设计和环境DNA采样,以测量社区层面对根除牛蛙的反应,包括对两种病原体的反应。动态占用模型显示94%的治疗点成功根除。本土两栖动物对根除牛蛙没有反应,但两栖动物的病原体壶菌(Batrachochytrium dendrobatidis)和蛙病毒与牛蛙共感染。我们的空间复制实验方法提供了强有力的证据,证明对入侵物种的管理可以同时降低濒危物种的捕食和疾病风险。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Successful eradication of invasive American bullfrogs leads to coextirpation of emerging pathogens

Successful eradication of invasive American bullfrogs leads to coextirpation of emerging pathogens

Interventions of the host–pathogen dynamics provide strong tests of relationships, yet they are still rarely applied across multiple populations. After American bullfrogs (Rana catesbeiana) invaded a wildlife refuge where federally threatened Chiricahua leopard frogs (R. chiricahuensis) were reintroduced 12 years prior, managers launched a landscape-scale eradication effort to help ensure continued recovery of the native species. We used a before-after-control-impact design and environmental DNA sampling of 19 eradication sites and 18 control sites between fall 2016 and winter 2020–2021 to measure community-level responses to bullfrog eradication, including for two pathogens. Dynamic occupancy models revealed successful eradication from 94% of treatment sites. Native amphibians did not respond to bullfrog eradication, but the pathogens amphibian chytrid fungus (Batrachochytrium dendrobatidis) and ranaviruses were coextirpated with bullfrogs. Our spatially replicated experimental approach provides strong evidence that management of invasive species can simultaneously reduce predation and disease risk for imperiled species.

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来源期刊
Conservation Letters
Conservation Letters BIODIVERSITY CONSERVATION-
CiteScore
13.50
自引率
2.40%
发文量
70
审稿时长
>12 weeks
期刊介绍: Conservation Letters is a reputable scientific journal that is devoted to the publication of both empirical and theoretical research that has important implications for the conservation of biological diversity. The journal warmly invites submissions from various disciplines within the biological and social sciences, with a particular interest in interdisciplinary work. The primary aim is to advance both pragmatic conservation objectives and scientific knowledge. Manuscripts are subject to a rapid communication schedule, therefore they should address current and relevant topics. Research articles should effectively communicate the significance of their findings in relation to conservation policy and practice.
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