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Effect Of Some Volatile Oils On Worker Bees
H.M. Fathy Abd El-Satar I Abd El-Kareim, Samir S
Awadalla and Amro A. Taha
Department of Economic
Entomology, Faculty of Agriculture, Mansoura University, Mansoura, Egypt,
E
E-mail: elboray2000@yahoo.com
Abstract
The study included the influence of three volatile oils, camphor
(Eucalyptus rostrata), thymes (Thymus vulgaris), and rosemary
(Rosmerinus officinalis) on development of hypopharyngeal glands, and dry
weight and nitrogen content of worker bees. Statistical analysis revealed that
glands development differed significantly in relation to the time of the year.
In all treatments, the average of thorax dry weight decreased significantly in
January, September and November. Nitrogen content increased first in March and
reached 6.70, 5.68 and 6.34% in treated colonies with camphor, thymus and
rosemary, respectively. The highest average dry weight and nitrogen content of
thorax were recorded for the nurse workers of treated colonies with camphor
(12.250 mg and 5.10%, respectively), followed by colonies treated with thymes
(11.130 mg and 4.77%).
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