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Minia University (2009)

Studies on pollen types collected by honeybee in Dakhla Oasis, New Valley.

Mahmoud Ali Hassan Nasr Allah

Titre : Studies on pollen types collected by honeybee in Dakhla Oasis, New Valley.

Auteur : Mahmoud Ali Hassan Nasr Allah,

Etablissement de soutenance : Minia University

Grade : Master of Agricultural Sciences 2009

Résumé partiel
The present work was done to study the types of pollen collected by the honey bee colonies in Dakhla Oasis, New Valley. Carniolan bee (Apis mellifera carnica) colonies were used in six trials over a period extended from 2005 to 2007. The present work aimed to study the following points : 1-Efficacy of different kinds of pollen traps . 2-Effect of trapping income pollen on activity and productivity of the honey bee colonies. 3-Determination the quantity of pollen collected by honeybee colonies over the year in Dakhla Oasis and its classification. 4- Chemical analysis of different pollen collected by the honeybee colonies. 5-Effect of availability of certain fresh pollen flows on production and viability of the brood of the honeybee colonies. 6-Effect of supplying the bee colonies with certain types of stored pollen in dearth period. The obtained results can be summarized as follows : 1-Efficacy of different kinds of pollen traps . Efficacy of three pollen traps (single layer, double layer and zigzag layer) were tested and the results showed that the highest rate (18.33 gm./ colony) of pollen collection was recorded for the double layer trap, followed by the single layer trap (12.49 gm./ colony), and the zigzag trap (5.19 gm./ colony) with significant differences among them. Concerning the numbers of passed workers through the holes of the tested pollen traps. Single layer traps passed the highest number (7.35 workers/ minute) which surpass significantly than the zigzag traps (4.5 workers/ minute) and double layer traps (4 workers/ minute). With respecting the required time for passing the free workers through the pollen traps, the results indicated that passing through the zigzag traps consumed more time (46 second), followed by the double layer traps (42 second) and the single layer traps (31 second) with significant differences among them.

Présentation étendue (EULC)

Page publiée le 4 janvier 2021