Relative Abundance of Bacterial Taxa
We calculated the relative abundances of phyla and genera from the unrarefied dataset. For analyses, phyla and genera with mean abundances <1% were lumped into the “Other” category. This data stringency limited analyses to the top three most abundant phyla (Proteobacteria, Firmicutes, Actinobacteriota) and the top twelve most abundant genera (Table 1). We ran non-parametric Kruskal-Wallis tests using the kruskal.test function in R to compare abundances of bacterial taxa between locations (urban, non-urban), parasite treatments (sham-fumigated, fumigated), and locations within the parasitized (sham-fumigated) treatment group. P -values were adjusted for false discovery rate with a Benjamini–Hochberg correction where significance was determined as P adj < 0.05.