Table 1. Polypeptide, amino acid (i.e. total and essential amino acids) and sterol content of host and non-host pollens expressed as means (sd).
| Bee group | Pollen source | Polypeptide content (mg/g) | Amino acid content (mg/g) |
Sterol content (mg/g) | |
|---|---|---|---|---|---|
| Total | Essential | ||||
| Colletes succinctusgroup | Aster tripolium (n = 3) | 139 (17.7) d | 220.8 (7.5) a | 111.2 (3.9) a | 3.3 (0.2) a |
| Calluna vulgaris (n = 3) | 133.7 (9.3) d | 290 (2.5) ab | 145.7 (1.1) ab | 9.8 (0.6) d | |
| Hedera helix (n = 3) | 135.6 (13.7) d | 325.4 (41.2) bcd | 144.4 (19.9) abc | 4.2 (0.3) bc | |
| Melitta leporinagroup | Lythrum salicaria (n = 3) | 32.2 (1.3) b | 315.2 (10.5) abcd | 150.8 (4.6) abc | 16.9 (2.4) e |
| Medicago sativa (n = 3) | 177.1 (17.9) e | 301.5 (13.5) abc | 149.3 (6.5) abc | 4.8 (0.3) c | |
| Odontites luteus (n = 3) | 225.9 (14.3) f | 363.3 (57.6) cd | 167.6 (26.2) bc | 4.8 (0.4) c | |
| Outgroup | Echium vulgare (n = 3) | 14.9 (0.8) a | 361.2 (11.8) d | 175.9 (6.9) c | 3.6 (0.3) ab |
| Reseda lutea (n = 3) | 84.5 (1.8) c | 342.7 (5.8) bcd | 156.4 (4.1) bc | 8.5 (0.9) d | |
| Statistics | F = 407.46 P < 0.001 | F = 7.12 P < 0.001 | F = 4.41 P = 0.007 | F = 129.55 P < 0.001 | |
Values with the same letter are not significantly different.