Camponotus Japonicus Ultrastructure Of The Olfactory Nerve Pathway

Ants(Camponotus japonics ) are social insects with clear division of labor. They are composed of five castes: females, males, soldiers, big workers and small workers. The polymorphism and clear division of lab lead to their developed nerve system. It is an important part in insect brain nerve research to analyze their brain nerve system.The present experiment used electron microscopic method with ant C.japonics as experimental materials to observe and analyze the tissue structures of olfactory pathway. The olfactory receptors of antennal contain chemical receptor and mechanical receptor. Chemical receptor has abundant mitochondria and lies at the inner edge of antennal, while mechanical receptor is located at the outer edge of antennal according to the extending direction of nerve fibers and protects other nerves from destroy. The olfactory glomeruli of the deutocerebrum are morphological and functional units for integrating the olfactory information. The olfactory glomeruli are neurotic composed of nerve fibers in which abundant synaptic connections occur among nerve fibers, and the inner nerves also contain plenty of mitochondria. The protocerebrum is high nerve center, where nerve fibers have lots of nerve connections between them. Synapse is important structure of nerve transmission, we observed and analyzed the structure and pattern of the synapses.On the basis of previous work, the olfactory pathway in C.japonics was wholly analyzed to establish the brain nerve model in C.japonics and to provide data at ultra structural level.