田鼠婚配制度的神经内分泌基础

作为繁殖为的一种表现形式，婚配制度是通过长期进化而形成的，具有种属特异性及可遗传性。因此，不同的婚配制度具有不同的生理基础。这种生理基础由３级结构组成：神经直接启动并维持繁殖行为；激素或通过诱导特异神经通路的发育或直接激活神经传导影响繁殖行为；基因则可能是通过调节激素的代谢和作用方式来控制与繁殖行为相关的神经系统。田鼠脑中涉及婚配制度的区域集中在视前区中部（ＭＰＯＡ），腹被盖区（ＶＴＡ），膈部及纹

NEURAL AND MOLECULAR BASES OF MATING SYSTEMS IN VOLES

Mating systems, as the expression of breeding behaviors, resulted from evolution with species specific aspects and hereditability. Thus, difference in mating systems might be based on diversity of physiological procedures. The recent studies have implicated the neurohypophyseal peptides oxytocin (OT) and vasopressin (AVP) in the central mediation of complex social behaviors correlated to monogamy and promiscuity. Comparison of the behaviors and expressive regions of OT receptor and AVP receptor in the brain among several species of vole have identified species specific patterns of these receptors that appear to relate to a monogamous versus promiscuous social structure. Molecular approaches show that changes in the regulative sequence of OT and AVP receptor gene underlie these species differences in receptor distribution and might provide a mechanism responsible for the evolution of mating system in voles.