Species differences in the vasopressin-immunoreactive pathways in the bed nucleus of the stria terminalis and medial amygdaloid nucleus in prairie voles (Microtus ochrogaster) and meadow voles (Microtus pennsylvanicus).
Vasopressin-immunoreactive (AVP-ir) cells in the bed nucleus of the stria terminalis (BST) and medial amygdaloid nucleus (MA) and their AVP-ir projections to the lateral septum were studied in monogamous prairie voles (Microtus ochrogaster) and promiscuous meadow voles (M. pennsylvanicus). A sexually dimorphic AVP-ir pathway was found in both species; males had more AVP-ir cells in the BST and MA, as well as denser AVP-ir fibers in the lateral septum, than did females. A significant species difference was also found. Overall, meadow voles had more AVP-ir cells in the BST and MA than did prairie voles. Male prairie voles, however, had a higher density of AVP-ir fibers in the lateral septum than male meadow voles. The species difference in the sexually dimorphic AVP-ir projections in the BST and MA is implicated in the rodents' different life strategy and behavior.
Wang
Z
Z
Department of Psychology, University of Massachusetts, USA.
D000679:Amygdala / Q000033:anatomy & histology*; D000818:Animals; D001127:Arginine Vasopressin / Q000502:physiology*; D003411:Arvicolinae / Q000033:anatomy & histology*; D001931:Brain Mapping; D005260:Female; D008297:Male; D009412:Nerve Fibers / Q000648:ultrastructure; D009434:Neural Pathways / Q000033:anatomy & histology; D009474:Neurons / Q000648:ultrastructure; D012688:Septum Pellucidum / Q000033:anatomy & histology*; D012726:Sexual Behavior, Animal / Q000502:physiology*; D013045:Species Specificity
D001127:Arginine Vasopressin