Evidence supporting the microbiota–gut–brain axis in a songbird |
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| Authors: | Morgan C Slevin Jennifer L Houtz David J Bradshaw II Rindy C Anderson |
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| Institution: | 1.Department of Biological Sciences, Florida Atlantic University, Davie, FL, USA;2.Department of Ecology and Evolutionary Biology, Cornell University, Ithaca, NY, USA;3.Harbor Branch Oceanographic Institute, Department of Biological Sciences, Florida Atlantic University, Fort Pierce, FL, USA |
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| Abstract: | Recent research in mammals supports a link between cognitive ability and the gut microbiome, but little is known about this relationship in other taxa. In a captive population of 38 zebra finches (Taeniopygia guttata), we quantified performance on cognitive tasks measuring learning and memory. We sampled the gut microbiome via cloacal swab and quantified bacterial alpha and beta diversity. Performance on cognitive tasks related to beta diversity but not alpha diversity. We then identified differentially abundant genera influential in the beta diversity differences among cognitive performance categories. Though correlational, this study provides some of the first evidence of an avian microbiota–gut–brain axis, building foundations for future microbiome research in wild populations and during host development. |
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| Keywords: | diversity gut microbiome learning and memory cognition zebra finch |
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