The presented master thesis concentrates on certain age-related aspects in the Giant honeybee Apis dorsata in Nepal. It is known, that the abdominal colouration of worker bees changes during development: Young bees are bright coloured and with growing age their last four tergites turn more and more blackish. This enables an age determination of worker bees on the basis of their varying abdominal colour pattern. For this purpose, a test procedure was developed which enables an automated age determination of A. dorsata workers by image analysis, utilizing an age-index, which classifies worker bees into 8 age classes according to their abdominal luminance traits. For the establishment of the age-index, worker bees were incubated, subsequently labelled and observed in a foster colony to trace the changes in their body colouration. The first section of the thesis presents the findings of the ?Observations of young Apis dorsata worker bees in a foster colony? with focus on the time of their emergence on the nest surface. The second section of the master thesis deals with the ?Investigations on the age-related nest topology in Apis dorsata colonies? and presents the results of the manual and automated age determination of worker bees in two colonies regarding functional age cohorts on the bee curtain by visualizing the spatial age distribution of surface bees.