Population density of Vespa orientalis Linnaeus attacking Apis mellifera Linnaeus colonies in Punjab.

摘要

The population dynamics of Vespa orientalis in Apis mellifera apiary in the Punjab, India, during the 2004-06 monsoon and post monsoon periods revealed its peak invasion during August and September while peak activity was at noon than in the morning and the evening. There was significant positive correlation between the mean daily wasp population and mean minimum temperature, mean daily temperature and mean relative humidity. Hypothesis of the wasp density relative to the number of colonies in the apiary is also postulated.