Table 1.
Occurrence of bacterial taxa along the gut compartments of A. mellifera ligustica forager bees from Italy.
| Bacterial categories | Bacterial taxa | N. OTUs in gut compartment (n = 5) | N. OTUs | Abund. (%) | |||
|---|---|---|---|---|---|---|---|
| Crop | Midgut | Ileum | Rectum | ||||
| Corbiculate core | Bifidobacterium | 1 | 2 | 2 | 3 | 3 | 15 |
| Gilliamella | 4 | 4 | 4 | 4 | 4 | 13.2 | |
| Firm-4 | 3 | 3 | 3 | 3 | 3 | 10.6 | |
| Firm-5 | 9 | 8 | 9 | 9 | 9 | 21.1 | |
| Snodgrassella | 3 | 3 | 3 | 2 | 4 | 12.7 | |
| Apis-specific | Bartonella | 2 | 2 | 2 | 3 | 3 | 10.4 |
| Frischella | 1 | 1 | 2 | 1 | 2 | 2.2 | |
| Other corbiculate associates | Commensalibacter | 2 | 2 | 2 | 2 | 2 | 0.2 |
| Apibacter | 1 | 1 | 1 | 1 | 1 | 0.2 | |
| Bombella | 1 | 1 | 1 | 1 | 1 | 8.8 | |
| Other potential environmental | Other Enterobacteriaceae | 9 | 16 | 15 | 13 | 16 | 3.4 |
| Other Lactobacillaceae | 20 | 11 | 9 | 10 | 21 | 1.9 | |
| Other Bacteria | 80 | 72 | 68 | 51 | 127 | 0.8 | |
Operational taxonomic units (OTUs) for each phylotype belong to the corbiculate core, Apis-specific, other corbiculate-associated, and other-possibly environmental categories along the four compartments. The total number of OTUs per bacterial taxa and their normalized-relative abundance (abund. %) in the total dataset are reported.