FIGURE LEGENDS
Figure 1. Microscopic findings in an 8-day-old Brazilian
merganser (Mergus octosetaceus ) with colibacillosis. In a: Lungs,
note congestion of alveolar capillaries and perivascular edema (Black
arrow). In b: Liver, note hepatocellular swelling and intracytoplasmic
vacuolation (Black arrow). Hematoxylin and eosin staining.
Figure 2. Resistome of multidrug-resistant CTX-M-8-producingEscherichia coli PMPU strain. Columns show genes encoding
resistance to antibiotics, disinfectants, heavy metals and acid or basic
environment.
a Mutations in quinolone resistance-determining region
(QRDR).
Figure 3. Phylogeny of CTX-M-8-producing Escherichia
coli isolate from a Brazilian merganser (Mergus octosetaceus ),
in relation to an international E. coli collection. The image
shows a minimum spanning tree
based on wgMLST of 123 worldwide distributed E. coli strains
belonging to ST58, constructed by the MSTree V2 tool from EnteroBase.
The figure was generated with iTOL v.5.5 (https://itol.embl.de).
Interactive versions of the tree can be found at
https://itol.embl.de/tree/20014463144294501588789515. Colored circles
represent sources of origin. Each isolate is indicated by the country of
origin.