Gut bacterial communities across tadpole ecomorphs in two diverse tropical anuran faunas

Autor(es):Mostrar menos -

Vences, Miguel ^[1] ; Lyra, Mariana L. ^[2] ; Kueneman, Jordan G. ^[3] ; Bletz, Molly C. ^[1] ; Archer, Holly M. ^[3] ; Canitz, Julia ^{[1, 4]} ; Handreck, Svenja ^{[1, 5]} ; Randrianiaina, Roger-Daniel ^[6] ; Struck, Ulrich ^[7] ; Bhuju, Sabin ^[8] ; Jarek, Michael ^[8] ; Geffers, Robert ^[8] ; McKenzie, Valerie J. ^[3] ; Tebbe, Christoph C. ^[9] ; Haddad, CLio F. B. ^[2] ; Glos, Julian ^{[1, 10]}

Afiliação do(s) autor(es)

^[1] Tech Univ Carolo Wilhelmina Braunschweig, Inst Zool, Mendelssohnstr 4, D-38106 Braunschweig - Germany

^[2] UNESP Univ Estadual Paulista, Dept Zool, Inst Biociencias, Av 24A, N 1515, BR-13506900 Rio Claro, SP - Brazil

^[3] Univ Colorado, Dept Ecol & Evolutionary Biol, Ramaley N-122, UCB 334, Boulder, CO 80309 - USA

^[4] Univ Potsdam, Inst Biochem & Biol, Evolutionary Biol & Special Zool, Karl Liebknecht Str 24-25, D-14476 Potsdam - Germany

^[5] Otto Von Guericke Univ, Visualizat Grp, Magdeburg - Germany

^[6] Univ Antananarivo, Dept Biol Anim, Antananarivo 101 - Madagascar

^[7] Leibniz Inst Evolut & Biodiversitatsforsch, Museum Nat Kunde, Invalidenstr 43, D-10115 Berlin - Germany

^[8] Helmholtz Ctr Infect Res, Dept Genome Analyt, Braunschweig - Germany

^[9] Thunen Inst Biodivers, Bundesallee 50, D-38116 Braunschweig - Germany

^[10] Univ Hamburg, Dept Anim Ecol & Conservat, Martin Luther King Pl 3, D-20146 Hamburg - Germany

• Tipo de documento: Artigo Científico
• Fonte: NATURWISSENSCHAFTEN; v. 103, n. 3-4 2016.
• Citações Web of Science: 20

Resumo

Animal-associated microbial communities can play major roles in the physiology, development, ecology, and evolution of their hosts, but the study of their diversity has yet focused on a limited number of host species. In this study, we used high-throughput sequencing of partial sequences of the bacterial 16S rRNA gene to assess the diversity of the gut-inhabiting bacterial communities of 212 specimens of tropical anuran amphibians from Brazil and Madagascar. The core gut-associated bacterial communities among tadpoles from two different continents strongly overlapped, with eight highly represented operational taxonomic units (OTUs) in common. In contrast, the core communities of adults and tadpoles from Brazil were less similar with only one shared OTU. This suggests a community turnover at metamorphosis. Bacterial diversity was higher in tadpoles compared to adults. Distinct differences in composition and diversity occurred among gut bacterial communities of conspecific tadpoles from different water bodies and after experimental fasting for 8 days, demonstrating the influence of both environmental factors and food on the community structure. Communities from syntopic tadpoles clustered by host species both in Madagascar and Brazil, and the Malagasy tadpoles also had species-specific isotope signatures. We recommend future studies to analyze the turnover of anuran gut bacterial communities at metamorphosis, compare the tadpole core communities with those of other aquatic organisms, and assess the possible function of the gut microbiota as a reservoir for protective bacteria on the amphibian skin. (AU)

• Processo FAPESP: 13/50741-7 - Diversidade e conservação dos anfíbios brasileiros
• Beneficiário: Célio Fernando Baptista Haddad
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOTA - Temático