EI-Barbary,, N., Abou Elenean, A., Abdellatif, M., Youssef, M. (2006). GROWTH AND DEVELOPMENT OF THE HYPOPHARYNGEAL GLANDS AND DETECTION OF ESTERASE ISOZYMES ACTIVITY IN ASSOCIATION WITH VARROA INFESTATION IN SOME HONEYBEE RACES. Journal of Plant Protection and Pathology, 31(2), 1123-1135. doi: 10.21608/jppp.2006.235175
N. S. EI-Barbary,; A. I. Abou Elenean; M. A. Abdellatif; M. K. Youssef. "GROWTH AND DEVELOPMENT OF THE HYPOPHARYNGEAL GLANDS AND DETECTION OF ESTERASE ISOZYMES ACTIVITY IN ASSOCIATION WITH VARROA INFESTATION IN SOME HONEYBEE RACES". Journal of Plant Protection and Pathology, 31, 2, 2006, 1123-1135. doi: 10.21608/jppp.2006.235175
EI-Barbary,, N., Abou Elenean, A., Abdellatif, M., Youssef, M. (2006). 'GROWTH AND DEVELOPMENT OF THE HYPOPHARYNGEAL GLANDS AND DETECTION OF ESTERASE ISOZYMES ACTIVITY IN ASSOCIATION WITH VARROA INFESTATION IN SOME HONEYBEE RACES', Journal of Plant Protection and Pathology, 31(2), pp. 1123-1135. doi: 10.21608/jppp.2006.235175
EI-Barbary,, N., Abou Elenean, A., Abdellatif, M., Youssef, M. GROWTH AND DEVELOPMENT OF THE HYPOPHARYNGEAL GLANDS AND DETECTION OF ESTERASE ISOZYMES ACTIVITY IN ASSOCIATION WITH VARROA INFESTATION IN SOME HONEYBEE RACES. Journal of Plant Protection and Pathology, 2006; 31(2): 1123-1135. doi: 10.21608/jppp.2006.235175
GROWTH AND DEVELOPMENT OF THE HYPOPHARYNGEAL GLANDS AND DETECTION OF ESTERASE ISOZYMES ACTIVITY IN ASSOCIATION WITH VARROA INFESTATION IN SOME HONEYBEE RACES
1Dept. of Economic Entomology, Faculty of Agriculture. Alexandria University. Egypt.
2Department of Genetics . Faculty of Agriculture. Alexandria University, Egypt
Abstract
In the Egyptian and cemiolan races and the hybrid bees. the fresh weight in mg
per head maintained its high level (record) during spring and summer compared to
autumn season. Moreover, the fresh weight revealed higher estimates in the Camiolan
and Hybrid bees than in the Egyptian race in all seasons. As for the dry weight. it has
also been concluded that both the Hybrid and Camiolan populations. in all seasons
exhibited higher estimates in relation to the Egyptian race. The measurements of fresh
weight per thorax showed that all the three populations exhibited their highest
estimates during summer season.
In addition, both Camiolan and Hybrid bees were significantly superior to the
Egyptian race in all seasons. A similar picture was detected in the thorox dry weight.
Determination of nitrogen content per thorax showed that. the least significant
differences between the three populations did not occur in spring and autumn.
However the tested bees differed significantly during summer.
The development of hypopharyngeal glands showed significant differences
between the three populations. The Hybrid bees exhibited the highest development of
these glands followed by the Camiolan and the Egyptian races-
The esterase isozymes activities were assayed in healthy and infested pupal
stages. While some esterases showed gradual decrease in activity followed by
complete disappearance in successive pupal stages, others had highly active bands of
isozymes in association with infestation of pupae by one or two varroa mites (Varroa
jobsoni)
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