Microbiome diversity differs between amphibian skin regions: Implications for chytridiomycosis mitigation efforts

Bataille Arnaud, Lee-Cruz Larisa, Tripathi Binu, Kim Hyoki, Waldman Bruce. 2016. Microbiome diversity differs between amphibian skin regions: Implications for chytridiomycosis mitigation efforts. Microbial Ecology, 71 (1) : 221-232.

Quartile : Q1, Sujet : MARINE & FRESHWATER BIOLOGY / Quartile : Q1, Sujet : ECOLOGY / Quartile : Q2, Sujet : MICROBIOLOGY

Résumé : Cutaneous bacteria may play an important role in the resistance of amphibians to the pathogenic fungus Batrachochytrium dendrobatidis (Bd). Microbial communities resident on hosts' skin show topographical diversity mapping to skin features, as demonstrated by studies of the human microbiome. We examined skin microbiomes of wild and captive fire-bellied toads (Bombina orientalis) for differences across their body surface. We found that bacterial communities differed between ventral and dorsal skin. Wild toads showed slightly higher bacterial richness and diversity in the dorsal compared to the ventral region. On the other hand, captive toads hosted a higher richness and diversity of bacteria on their ventral than their dorsal skin. Microbial community composition and relative abundance of major bacterial taxonomic groups also differed between ventral and dorsal skin in all populations. Furthermore, microbiome diversity patterns varied as a function of their Bd infection status in wild toads. Bacterial richness and diversity was greater, and microbial community structure more complex, in wild than captive toads. The results suggest that bacterial community structure is influenced by microhabitats associated with skin regions. These local communities may be differentially modified when interacting with environmental bacteria and Bd. A better understanding of microbiome variation across skin regions will be needed to assess how the skin microbiota affects the abilities of amphibian hosts to resist Bd infection, especially in captive breeding programs.

Mots-clés Agrovoc : Bacteria, flore microbienne, bactérie pathogène, agent pathogène, Amphibien, Crapaud, cuirs et peaux, peau, écorchage

Classification Agris : L50 - Physiologie et biochimie animales
L73 - Maladies des animaux

Champ stratégique Cirad : Hors axes (2014-2018)

Auteurs et affiliations

• Bataille Arnaud, CIRAD-BIOS-UMR CMAEE (FRA) ORCID: 0000-0002-3508-2144
• Lee-Cruz Larisa, Seoul National University (KOR)
• Tripathi Binu, Seoul National University (KOR)
• Kim Hyoki, Celemics (KOR)
• Waldman Bruce, Seoul National University (KOR)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/583217/)

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