Environmental factors and host sex influence the skin microbiota structure of Hong Kong newt (Paramesotriton hongkongensis) in a coldspot of chytridiomycosis in subtropical East Asia.

IF 3.5 1区 生物学 Q1 ZOOLOGY Integrative zoology Pub Date : 2024-06-13 DOI:10.1111/1749-4877.12855
Bowen Wan, Guoling Chen, Emily Shui Kei Poon, Hon Shing Fung, Anthony Lau, Simon Yung Wa Sin
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Abstract

Chytridiomycosis, an infectious skin disease caused by the chytrid fungi, Batrachochytrium dendrobatidis and B. salamandrivorans, poses a significant threat to amphibian biodiversity worldwide. Antifungal bacteria found on the skin of chytrid-resistant amphibians could potentially provide defense against chytridiomycosis and lower mortality rates among resistant individuals. The Hong Kong newt (Paramesotriton hongkongensis) is native to East Asia, a region suspected to be the origin of chytrids, and has exhibited asymptomatic infection, suggesting a long-term coexistence with the chytrids. Therefore, the skin microbiota of this resistant species warrant investigation, along with other factors that can affect the microbiota. Among the 149 newts sampled in their natural habitats in Hong Kong, China, putative antifungal bacteria were found in all individuals. There were 314 amplicon sequence variants distributed over 25 genera of putative antifungal bacteria; abundant ones included Acinetobacter, Flavobacterium, and Novosphingobium spp. The skin microbiota compositions were strongly influenced by the inter-site geographical distances. Despite inter-site differences, we identified some core skin microbes across sites that could be vital to P. hongkongensis. The dominant cores included the family Comamonadaceae, family Chitinophagaceae, and class Betaproteobacteria. Moreover, habitat elevation and host sex also exhibited significant effects on skin microbiota compositions. The antifungal bacteria found on these newts offer an important resource for conservation against chytridiomycosis, such as developing probiotic treatments for susceptible species.

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环境因素和宿主性别对亚热带东亚糜烂丝虫病冷斑中香港蝾螈皮肤微生物群结构的影响
糜烂性真菌病是由糜烂性真菌 Batrachochytrium dendrobatidis 和 B. salamandrivorans 引起的一种传染性皮肤病,对全球两栖动物的生物多样性构成严重威胁。在对糜烂丝有抵抗力的两栖动物皮肤上发现的抗真菌有可能抵御糜烂丝虫病,降低有抵抗力个体的死亡率。香港蝾螈(Paramesotriton hongkongensis)原产于东亚,该地区被怀疑是糜烂丝的发源地,它表现出无症状感染,表明它与糜烂丝长期共存。因此,有必要对这种具有抗药性的物种的皮肤微生物群以及可能影响微生物群的其他因素进行调查。在中国香港的自然栖息地采样的 149 只蝾螈中,所有个体都发现了推定的抗真菌细菌。有 314 个扩增子序列变体分布在 25 个假定抗真菌细菌属中,其中较多的包括醋杆菌属、黄杆菌属和新磷杆菌属。尽管不同地点之间存在差异,但我们发现了一些对香港金斑梭子蟹至关重要的核心皮肤微生物。其中最主要的核心微生物包括拟杆菌科(Comamonadaceae)、噬甲壳素科(Chitinophagaceae)和贝特蛋白菌类(Betaproteobacteria)。此外,栖息地海拔高度和宿主性别对皮肤微生物群组成也有显著影响。在这些蝾螈身上发现的抗真菌为防治糜烂性真菌病提供了重要资源,例如为易感物种开发益生菌治疗方法。
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来源期刊
CiteScore
6.40
自引率
12.10%
发文量
81
审稿时长
>12 weeks
期刊介绍: The official journal of the International Society of Zoological Sciences focuses on zoology as an integrative discipline encompassing all aspects of animal life. It presents a broader perspective of many levels of zoological inquiry, both spatial and temporal, and encourages cooperation between zoology and other disciplines including, but not limited to, physics, computer science, social science, ethics, teaching, paleontology, molecular biology, physiology, behavior, ecology and the built environment. It also looks at the animal-human interaction through exploring animal-plant interactions, microbe/pathogen effects and global changes on the environment and human society. Integrative topics of greatest interest to INZ include: (1) Animals & climate change (2) Animals & pollution (3) Animals & infectious diseases (4) Animals & biological invasions (5) Animal-plant interactions (6) Zoogeography & paleontology (7) Neurons, genes & behavior (8) Molecular ecology & evolution (9) Physiological adaptations
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