Pissonnier D, Thiery J C, Fabre-Nys C, Poindron P, Keverne E B
Physiol Behav. 1985 Sep;35(3):361-3. doi: 10.1016/0031-9384(85)90309-9.
Herds of grazing mammals characteristically produce precocial offspring in synchrony, and it is therefore important for the mother to form a rapid recognition of her own offspring to distinguish them from others. In sheep, the ewe forms such a selective bond with her lamb within 2-4 hours of parturition, a bond which is primarily dependent on olfactory sensory recognition. Here we report that the neuronal mechanism whereby the olfactory "imprint" is made is dependent on the centrifugal noradrenergic projections to the olfactory bulbs. Lesioning of this neural pathway prevents the ewe from forming a selective bond with her own lamb, enabling her to adopt alien lambs.
成群的食草哺乳动物通常会同步产下早熟的后代，因此，对于母亲来说，迅速识别自己的后代并将它们与其他后代区分开来非常重要。在绵羊中，母羊在分娩后2至4小时内就会与自己的羔羊形成这种选择性的联系，这种联系主要依赖于嗅觉感官识别。我们在此报告，形成嗅觉“印记”的神经元机制依赖于向嗅球的离心去甲肾上腺素能投射。破坏这条神经通路会阻止母羊与自己的羔羊形成选择性联系，使其能够收养外来的羔羊。
