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Title: Characterization of the Skin Cultivable Microbiota Composition of the Frog Pelophylax perezi Inhabiting Different Environments
Authors: Proença, Diogo Neves 
Fasola, Emanuele
Lopes, Isabel
Morais, Paula V. 
Keywords: Acinetobacter; Perez’s frog; acid mine drainage; amphibians; cutaneous cultivable microbiota; exopolysaccharide
Issue Date: 2021
Project: UID/AMB/50017/2013 
project GENEROSI project number PTDC/BIA-BIC/3488/2012 
FCT/MEC (PIDDAC) doctoral fellowship SFRH/BD/88955/2012 
FCT grant IF/00475/2013 
Serial title, monograph or event: International Journal of Environmental Research and Public Health
Volume: 18
Issue: 5
Abstract: Microorganisms that live in association with amphibian skin can play important roles in protecting their host. Within the scenarios of global change, it is important to understand how environmental disturbances, namely, metal pollution, can affect this microbiota. The aim of this study is to recognize core bacteria in the skin cultivable microbiota of the Perez frog (Pelophylax perezi) that are preserved regardless of the environmental conditions in which the frogs live. The characterization of these isolates revealed characteristics that can support their contributions to the ability of frogs to use metal impacted environments. Frog's skin swabs were collected from P. perezi populations that inhabit a metal-polluted site and three reference (non-metal polluted) sites. Bacterial strains were isolated, identified, and subjected to an acid mine drainage tolerance (AMD) test, collected upstream from a site heavily contaminated with metals, and tested to produce extracellular polymeric substances (exopolysaccharide, EPS). All frog populations had Acinetobacter in their cutaneous cultivable microbiota. Significant growth inhibition was observed in all bacterial isolates exposed to 75% of AMD. EPS production was considered a characteristic of several isolates. The data obtained is a preliminary step but crucial to sustain that the cultivable microbiota is a mechanism for protecting frogs against environmental contamination.
ISSN: 1660-4601
DOI: 10.3390/ijerph18052585
Rights: openAccess
Appears in Collections:I&D CEMMPRE - Artigos em Revistas Internacionais
FCTUC Ciências da Vida - Artigos em Revistas Internacionais

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