Mobility of honey bees (Apidae, Apis mellfera L.) during foraging in avocado orchards [cross-pollination, wind velocity] | Mobilite des abeilles (Apidae, Apis mellifera L.) au cours du butinage dans les vergers d'avocatier [pollinisation croisee, efficacite pollinisatrice, vitesse du vent]
1998
Ish Am, G. (Hebrew University of Jerusalem, Rehovot (Israel). Department of Horticulture) | Eisikowitch, D.
The mobility of the honey bee (Apis mellifera L.) during foraging has a great influence on the effectiveness of the bees as cross-pollinators. In this work, honey bee mobility was measured in avocado orchards, between neighbouring trees and up to a distance of 15 rows. The average number of bees crossing between adjacent rows in a 10-min period was linearly correlated to bee density, and the corresponding percentage increased with the increase in wind velocity, from 30 % in a light wind (4 km/h) to up to 65 % in a strong wind (45 km/h). The bees tended to travel upwind, and this tendency increased with increasing wind velocity. Consequently, under strong-wind conditions, up to 100 % of the bees travelled to the adjacent upwind row in a 10-min period. The percentage of cross-pollinating bees decreased with increasing distance from the pollen source, following a hyperbolic curve, and reached 1-2 % of the bees at a distance of 10-15 rows
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Эту запись предоставил National Institute for Agricultural Research