Dental disease and diet are associated with changes in the microbiota of the oral cavity in bearded dragons (Pogona vitticeps).

Fruit consumption and dental disease are associated with distinct oral microbial dysbiosis in bearded dragons.

This observational study investigated the oral microbiota of 42 client-owned bearded dragons (Pogona vitticeps), comparing healthy individuals (absent or mild dental disease, n=21) to those with moderate-to-severe dental disease (n=21), and additionally comparing fruit-eating (n=17) versus non-fruit-eating dragons (n=25). Oral swabs from all quadrants were processed via next-generation sequencing targeting bacterial 16S rRNA and fungal ITS2 regions. The oral microbiome comprised 1,317 bacterial and 163 fungal species. While alpha-diversity did not differ significantly between healthy and diseased groups, bacterial beta-diversity was significantly distinct, indicating compositional differences in community structure. Several taxa were significantly more abundant in the dental disease group, including Pseudomonas aeruginosa, Devriesea agamarum, Serratia marcescens, and Aspergillus spp. — organisms with known pathogenic potential in reptiles. Fruit consumption was associated with significantly altered oral microbiota and greater overall microbial abundance, suggesting that dietary sugars may promote oral microbial overgrowth and potentially contribute to dysbiosis. The study highlights specific microbial signatures associated with dental disease status and diet in bearded dragons. These findings have practical implications for clinical management, recommending that fruit intake be minimized or eliminated from bearded dragon diets. Clinicians should consider oral microbiota composition when developing therapeutic and husbandry strategies, as certain organisms identified may serve as targets for antimicrobial therapy or early disease markers in this popular exotic companion species.

This summary was distilled by AI and may occasionally misinterpret data. Confirm critical details with the primary literature before clinical application.