Figure Legends
Figure 1. Effect of parasite treatment (sham-fumigated, fumigated) on (a) observed ASV richness and (b) Shannon diversity of the microbiota in nestling small ground finches. Individuals from fumigated nests are represented by red circles and individuals from sham-fumigated nests are represented by blue circles. Effect of location (urban, non-urban) on (c) the observed ASV richness and (d) Shannon diversity of the microbiota in nestling small ground finches. Individuals from non-urban nests are represented by green circles and individuals from urban nests are represented by gray circles. Black circles denote the mean values (±SE) of birds from each treatment.
Figure 2. (a) Proportional abundance of bacterial phyla across location (urban, non-urban) and parasite treatment (fumigated, sham-fumigated). Each bar represents a sample from an individual bird. Samples are divided into treatment groups as follows: non-urban, fumigated: n = 7 nestlings; non-urban, sham-fumigated: n = 7; urban, fumigated: n = 23; urban, sham-fumigated: n = 21. Phyla with <1% relative abundance are collapsed into the category “<1% abundance.” (b) Relative abundance of the three most common phyla separated by location (urban, non-urban). Individual points represent the relative abundance of each phylum from an individual nestling. Black circles denote the mean (±SE) relative abundances across treatments.
Figure 3. Relative abundance of the four genera (Candidatus Arthromitus, Klebsiella ,Erysipelatoclostridium , Rothia ) that significantly varied by location (urban, non-urban). Individual points represent the relative abundance of each genus from an individual nestling. Black circles denote the mean (±SE) across treatments.