An inter-island comparison of Darwin's finches reveals the impact of habitat, host phylogeny, and island on the gut microbiome

Autor: Rachael Y. Dudaniec, Sonia Kleindorfer, Wesley T. Loo, Colleen M. Cavanaugh
Jazyk: angličtina
Rok vydání: 2019
Předmět:
0106 biological sciences
0301 basic medicine
Topography
Composite Particles
Social Sciences
Animal Phylogenetics
01 natural sciences
Feces
Isotopes
RNA
Ribosomal
16S
Adaptive radiation
Psychology
Foraging
Gut bacteria
Phylogeny
Data Management
Islands
Multidisciplinary
geography.geographical_feature_category
Animal Behavior
biology
Physics
Stable Isotopes
Gastrointestinal Microbiome
Eukaryota
Genomics
Phylogenetics
Medical Microbiology
Vertebrates
Physical Sciences
Archipelago
behavior and behavior mechanisms
Medicine
Research Article
Computer and Information Sciences
Atoms
Science
Zoology
Context (language use)
Microbial Genomics
Microbiology
010603 evolutionary biology
Birds
03 medical and health sciences
biology.animal
parasitic diseases
Genetics
Animals
Humans
Evolutionary Systematics
Microbiome
Particle Physics
Ecosystem
Finch
Taxonomy
Landforms
Behavior
Evolutionary Biology
geography
Bacteria
Organisms
Biology and Life Sciences
Geomorphology
Darwin's finches
biology.organism_classification
Diet
030104 developmental biology
Amniotes
Earth Sciences
Finches
Zdroj: PLoS ONE, Vol 14, Iss 12, p e0226432 (2019)
PLoS ONE
ISSN: 1932-6203
Popis: Darwin’s finch species in the Galapagos Archipelago are an iconic adaptive radiation that offer a natural experiment to test for the various factors that influence gut microbiome composition. The island of Floreana has the longest history of human settlement within the archipelago and offers an opportunity to compare island and habitat effects on Darwin’s finch microbiomes. In this study, we compare gut microbiomes in Darwin’s finch species on Floreana Island to test for effects of host phylogeny, habitat (lowlands, highlands), and island (Floreana, Santa Cruz). We used 16S rRNA Illumina sequencing of fecal samples to assess the gut microbiome composition of Darwin’s finches, complemented by analyses of stable isotope values and foraging data to provide ecological context to the patterns observed. Overall bacterial composition of the gut microbiome demonstrated co-phylogeny with Floreana hosts, recapitulated the effect of habitat and diet, and showed differences across islands. The finch phylogeny uniquely explained more variation in the microbiome than did foraging data. Finally, there were interaction effects for island × habitat, whereby the same Darwin’s finch species sampled on two islands differed in microbiome for highland samples (highland finches also had different diets across islands) but not lowland samples (lowland finches across islands had comparable diet). Together, these results corroborate the influence of phylogeny, age, diet, and sampling location on microbiome composition and emphasize the necessity for comprehensive sampling given the multiple factors that influence the gut microbiome in Darwin’s finches, and by extension, in animals broadly.
Databáze: OpenAIRE
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