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Diet induces parallel changes to the gut microbiota and problem solving performance in a wild bird
Scientific Reports ( IF 3.8 ) Pub Date : 2020-11-27 , DOI: 10.1038/s41598-020-77256-y
Gabrielle L Davidson 1, 2 , Niamh Wiley 3, 4 , Amy C Cooke 1 , Crystal N Johnson 3, 4 , Fiona Fouhy 3, 4 , Michael S Reichert 1, 5 , Iván de la Hera 1, 5 , Jodie M S Crane 1, 6 , Ipek G Kulahci 1, 7 , R Paul Ross 3, 4 , Catherine Stanton 3, 4 , John L Quinn 1, 8
Affiliation  

The microbial community in the gut is influenced by environmental factors, especially diet, which can moderate host behaviour through the microbiome-gut-brain axis. However, the ecological relevance of microbiome-mediated behavioural plasticity in wild animals is unknown. We presented wild-caught great tits (Parus major) with a problem-solving task and showed that performance was weakly associated with variation in the gut microbiome. We then manipulated the gut microbiome by feeding birds one of two diets that differed in their relative levels of fat, protein and fibre content: an insect diet (low content), or a seed diet (high content). Microbial communities were less diverse among individuals given the insect compared to those on the seed diet. Individuals were less likely to problem-solve after being given the insect diet, and the same microbiota metrics that were altered as a consequence of diet were also those that correlated with variation in problem solving performance. Although the effect on problem-solving behaviour could have been caused by motivational or nutritional differences between our treatments, our results nevertheless raise the possibility that dietary induced changes in the gut microbiota could be an important mechanism underlying individual behavioural plasticity in wild populations.



中文翻译:


饮食会引起野生鸟类肠道微生物群和解决问题能力的平行变化



肠道中的微生物群落受到环境因素的影响,尤其是饮食,它可以通过微生物组-肠-脑轴调节宿主的行为。然而,微生物组介导的野生动物行为可塑性的生态相关性尚不清楚。我们向野生捕获的大山雀( Parus Major )提出了一项解决问题的任务,结果表明,表现与肠道微生物组的变化有微弱的相关性。然后,我们通过给鸟类喂食两种脂肪、蛋白质和纤维含量相对水平不同的饮食之一来操纵肠道微生物组:昆虫饮食(低含量)或种子饮食(高含量)。与食用种子的个体相比,食用昆虫的个体中微生物群落的多样性较低。接受昆虫饮食后,个体解决问题的可能性较小,并且由于饮食而改变的相同微生物群指标也与解决问题表现的变化相关。尽管对解决问题行为的影响可能是由我们的治疗之间的动机或营养差异引起的,但我们的结果仍然提出了饮食引起的肠道微生物群变化可能是野生种群中个体行为可塑性的重要机制的可能性。

更新日期:2020-11-27
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