Study of the most important factors for bee colony collapse phenomenon (CCD)

Honey bees are known as the most important pollinator insect that pollinating about 75% of the plants. Since 2006, phenomenon was observed in bee colonies in the world that caused more than 50 percent of the bee population wiped out. In this phenomenon, the worker bees to fly nature to collecting nectar and pollen, do not return to the hive never. After a short time in the hive, only a very small number of worker bees and the queen remains that because of the low number of worker bees can not respond to the needs of the hive, colony in a few days completely were destroyed. Bee is the social insect that its life is depend on environment. So cause of this phenomenon must be searched in nature. Various factors such as Neonicotionid pesticides, Mites, Disease for example Nosema, Acute and Chronic Paralyses Virus, and Radio Waves and ultimately Apiary management, can cause this phenomenon that in this article is studied.