褐云玛瑙螺(Achatina fulica Frussac)嗅触神经中枢内神经元的分布

MAPPING OF CENTRAL NEURONS BY HORSERADISH PEROXIDASE BACKFILLING OF THE OLFACTORY NERVE IN SNAIL Achatina fulica Frussac

用辣根过氧化物酶轴突逆行追踪技术,研究了褐云玛瑙螺嗅触神经中枢内神经元的分布。结果表明,神经元分布于脑神经节、口球神经节和足神经节中。脑神经节和口球神经节内的神经元主要分布于同侧,足神经节内的神经元则平均分布于左右两侧。嗅触神经中枢内的神经元多数属于中、小型,只有少数属大型神经元。

Neurons having an axonal projection in the olfactory nerve (ON) of the snailAchatina fulica F(?)russac Stylmmotophora, Pulmonata,Gastropoda are identified.The majority of the labelled neurons are present in the cerebral ganglia but somecells are also found in the buccal and pedal ganglia.The distribution of labelledneurons is mainly ipsilateral in the cerebral and buccal ganglia,only a few cellsare contralaterally distributed.On the other hand,labelled neurons are evenly andbilaterally distributed in the pedal ganglia.Most of neurons are of small and me-dium size,10~45μm,while the others are large,50~80μm in size.