| Autor: |
Liu, H. J., Macfarlane, R. P., Pengelly, D. H. |
| Zdroj: |
The Canadian Entomologist; June 1975, Vol. 107 Issue: 6 p577-588, 12p |
| Abstrakt: |
AbstractAn attraction to certain plant species by Bombus terricola, B. bimaculatus, B. perplexus, and B. ternariuswas observed. The gathering of pollen was observed as a behavioural act distinct from nectar gathering. Pollen analyses indicated that pollen collectors restricted their activities to a small number of plant species. These bees? life histories and flower preferences made them potentially effective pollinators of early-flowering economic crops, Ribesspp., and Pyrus Malusin particular, and of common weeds such as Solanum Dulcamaraand Hypericum perforatum. The same reasons prevented them from being important in the pollination of Trifolium pratenseand Medicago sativa. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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