Comparison of social interaction and neural activation in the main olfactory bulb and the accessory olfactory bulb between Microtus mandarinus and Microtus fortis  

作　　者：Fadao TAI Wanying WANG Hugh BRODERS Ruyong SUN Limin LIU Hongyuan WANG 

机构地区：[1]Institute of Brain and Behavioral Sciences and College of Life Sciences, Shaanxi Normal University, Xi＇an 710062, China [2]Department of Biology, Shaanxi Institute of Education, Xi＇an 710062, China [3]Department of Biology, Saint Mary＇s University, Halifax, Nova Scotia, B3H 3C3, Canada [4]College of Life Sciences, South China Normal University, Guangzhou 510631, China

出　　处：《Current Zoology》2009年第4期279-287,共9页动物学报（英文版）

基　　金：supported by National Natural Science Foundation of China(No.30670273;No.30200026);Ministry of Education Key Project of Peoples Republic of China(20060718)

摘　　要：To gain insight into the function of AOB and MOB during different social interaction and in different vole species,the behaviors and neural activation of the olfactory bulbs in social interactions of mandarin voles Microtus mandarinus and reed voles Microtus fortis were compared in the present research.Mandarin voles spent significantly more time attacking and sniffing their opponents and sniffing sawdust than reed voles.During same sex encounters,mandarin voles attacked their opponents for a significantly longer time and sniffed its opponent for shorter time compared with male-female interactions.However,no significant behavioral differences were found during encounters of two individual reed voles,regardless of gender composition of the pair.Using c-Fos as an indicator of neural activation,we observed that neural activation was significantly higher in almost all sub-regions of the main olfactory bulb(MOB)and the accessory olfactory bulb(AOB)of mandarin voles compared with reed voles.Numbers of c-Fos-ir neurons in almost all sub-regions of the AOB and the MOB during male-female interactions were also higher than those in interactions of the same sex.Anterior-posterior ratios of Fos-ir neurons in the AOBM(AOBMR)and the AOBG(AOBGR)in male-female interaction were significantly higher than those in interaction of the same sex.The AOBMR of male mandarin voles and reed voles were larger than those of females in male-female interactions.Behavioral patterns are consistent with cellular activity patterns.Consistent level of neural activation in MOB and AOB suggests important roles of both the main olfactory bulb and the accessory olfactory bulb in social interaction in two species.

关 键 词：Mandarin vole Microtus mandarinus Reed vole Microtus fortis Main olfactory bulb Accessory olfactory bulb Cellular activity Social interaction 

分 类 号：Q95[生物学—动物学]