The Prosoeca peringueyi (Diptera: Nemestrinidae) pollination guild in southern Africa: long-tongued flies and their tubular flowers
Abstract | Materials and Methods | Results | Discussion | Literature
Table 2
Nectar characteristics of species with the Lapeirousia silenoides-type flower.
Fru = fructose, Glu = glucose, Suc = sucrose. Sample size for nectar volume figures are indicated
in parentheses in volume column; sample size for nectar sugar components is in last column after sucrose: fructose + glucose ratio.
Family/species |
Volume µl (n) |
Mean % sugar |
Fru |
Glu |
Suc |
Mean Suc / Glu + Fru (n) |
Geraniaceae |
Pelargonium cortusifolium |
2.6-3.1 (2) |
24 | - | - | - | - |
P. incrassatum |
1.5-2.2 (1) |
38 |
0 |
75 |
25 |
0.33 (1) |
P. magenteum |
0.6-1.8 (5) |
29 |
38 |
40 |
22 |
0.28 (1) |
P. sericifolium |
no measurable nectar produced |
Iridaceae |
Babiana curviscapa |
2.0-4.4 (5) |
25 |
12 |
19 |
69 |
2.23 (1) |
B. dregei |
3.9-9.6 (5) |
22 |
13-15 |
19-21 |
64-68 |
1.94 (2) |
B. ecklonii |
4.3-8.9 (5) |
27.7 |
5-11 |
10-18 |
72-85 |
3.29 (3) |
B. flabellifolia |
3.9-9.6 (5) |
27 |
7 |
14 |
79 |
3.76 (1) |
B. framesii |
2.6-6.4 (5) |
26 |
7-9 | 12-14 | 77-81 | 3.84 (3) |
B. geniculata |
3.2-4.8 (5) |
29 |
17 | 21 | 62 | 1.63 (1) |
B. pubescens |
3.2-4.8 (5) |
28 |
3-8 | 9-14 | 78-88 | 2.18 (2) |
B. sambucina var. longibracteata |
3.9-6.6 (3) |
30 |
6-12 |
10-19 |
69-84 |
3.48 (3) |
Hesperantha latifolia |
0.7-1.1 (10) |
24 |
23-29 |
24-30 |
41-53 |
0.94 (3) |
H. oligantha |
1.1-1.8 (5) |
26.4 |
19-23 |
24-25 |
52-57 |
1.20 (2) |
Lapeirousia dolomitica subsp. dolomitica |
1.4-5.5 (5) |
29 |
4-9 |
12-14 |
77-84 |
4.13 (2) |
L. dolomitica subsp. lewisiana |
5.1-5.5 (4) |
27 |
5-12 |
14-25 |
63-81 |
2.94 (5) |
L. jacquinii |
1.5-2.3 (6) |
26 |
8 |
17 |
75 |
3.00 (1) |
L. oreogena |
2.5-7.3 (10) |
26 |
13 |
21.5 |
65.5 |
1.90 (4) |
L. pyramidalis subsp. regalis |
2.6-4.8 (10) |
28 |
4-21 |
12-31 |
48-84 |
2.45 (6) |
L. silenoides |
1.7-3.6 (16) |
27 |
5-8 |
18-27 |
65-77 |
2.45 (3) |
L. violacea |
1.4-1.8 (10) |
27 |
9-13 |
15-16 |
71-76 |
2.77 (2) |
Romulea hantamensis |
3.7-5.2 (3) |
20 |
23 |
27 |
50 |
1.00 (1) |
Sparaxis variegata subsp. metelerkampiae |
1.7-2.2 (6) |
28.5 |
1-12 |
4-22 |
70-95 |
3.23 (4) |
Tritonia marlothii |
1.8-3.5 (5) |
29 |
13-14 | 17-18 | 68-70 | 2.23 (2) |
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