TABLE 2.
Biochemical comparison of C. troglodytis and other Campylobacter spp.a
| Campylobacter sp. | Catalase | Oxidase | Urease | Nitrate reduction | Alkaline phosphatase | Indoxyl acetate hydrolysis | Growth at 25°C | Growth at 37°C | Growth at 42°C | Hippurate hydrolysis | Growth in 1% glycine | Growth in 1% bile | Growth in 2% NaCl | Selenite reduction | Growth on TTC | Sensitive to nalidixic acid (30 μg) | Sensitive to cephalothin (30 μg) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| C. troglodytis | + (11/11) | + (11/11) | − (11/11) | − (7/11) | + (11/11) | − (8/10) | 0/11 | 11/11 | 11/11 | − (8/11) | + (11/11) | − (9/11) | − (9/11) | − (9/11) | + (9/11) | 10/10 | 1/10 |
| C. avium | weak | + | − | + | − | + | − | + | + | + | − | V | − | − | − | + | − |
| C. canadensis | V | + | V | V | − | − | − | + | + | − | V | M | ND | ND | ND | V | + |
| C. cuniculorum | + | + | − | + | − | + | − | + | M | − | − | V | − | − | V | V | F |
| C. coli | + | + | − | + | − | + | − | + | + | − | + | M | − | V | + | + | − |
| C. consisus | − | V | − | F | V | − | − | + | M | − | F | − | F | F | − | M | + |
| C. curvis | − | + | − | + | V | V | − | Vc | V | F | + | − | V | − | V | − | + |
| C. fetus subsp. fetusb | + | + | − | + | − | − | + | + | M | − | + | + | − | M | − | V | + |
| C. fetus subsp. veneralis | M | + | − | + | − | − | + | + | − | − | − | + | − | − | − | F | + |
| C. gracilis | V | − | − | M | − | V | − | −c | V | − | + | − | V | − | − | V | + |
| C. helveticus | − | + | − | + | − | + | − | + | + | − | V | + | − | − | − | + | + |
| C. hominis | − | + | − | − | − | − | − | + | F | − | + | ND | + | − | ND | V | + |
| C. hyointestinalis subsp. hyointestinalis | + | + | − | + | − | − | − | + | + | − | + | + | − | + | − | − | M |
| C. hyointestinalis subsp. lawsonni | + | + | − | + | F | − | − | + | + | − | V | M | − | + | − | − | + |
| C. insulaenigrae | + | + | − | + | ND | − | − | + | − | − | + | ND | − | ND | ND | − | − |
| C. jejuni subsp. doyleib | V | + | − | − | − | + | − | + | − | + | F | + | − | − | V | + | + |
| C. jejuni subsp. jejuni | + | + | − | + | − | + | − | + | + | + | + | + | − | + | + | + | − |
| C. lanienae | + | + | − | + | + | − | − | + | + | − | − | ND | − | + | ND | − | − |
| C. lari | + | + | V | + | − | − | − | + | + | − | + | + | M | + | + | V | − |
| C. lari subsp. concheus | + | ND | ND | ND | ND | ND | ND | ND | + | + | + | + | − | ||||
| C. mucosalis | − | + | − | − | M | − | − | + | + | − | V | + | + | − | − | F | + |
| C. peloridis | + | ND | ND | ND | ND | ND | ND | ND | + | − | + | ND | M | ND | ND | M | M |
| C. rectus | F | + | − | + | − | + | − | −c | F | − | + | − | V | + | − | F | + |
| C. showae | + | V | − | + | − | − | − | Vc | V | − | V | − | + | + | − | + | + |
| C. sputorum | V | + | Vb | + | − | − | − | + | + | − | + | V | + | + | − | F | + |
| C. upsaliensis | − | + | − | + | − | + | − | + | + | − | + | + | − | + | V | + | M |
a
+, 90 to 100% of strains positive; −, 0 to 10% of strains positive; F, 11 to 25% of strains positive; V, 26 to 74% of strains positive; M, 75 to 89% of strains positive; ND, not determined. Data for reference species were taken from Lawson et al. (26), Logan et al. (28), On et al. (37), Foster et al. (8), Debruyne et al. (5), Rossi et al. (42), Stanley et al. (50), and Zanoni et al. (59).
b
Strains of biovar paraureolyticus are urease positive; others are negative (34).
c
These strains grow at 37°C under anaerobic conditions.