Taylor Jack H, Intorre Allison A, French Jeffrey A
Department of Psychology, University of Nebraska at Omaha, Omaha, NE, United States.
Callitrichid Research Center, Omaha, NE, United States.
Front Endocrinol (Lausanne). 2017 Jul 27;8:181. doi: 10.3389/fendo.2017.00181. eCollection 2017.
Oxytocin (OT) is critical for lactation and maternal care, but OT and the related nonapeptide vasopressin are important for caregiving behaviors in fathers and alloparents as well. This experiment tested the effects of vasopressin and OT on food sharing in marmoset families. We treated caregivers (parents, siblings) with intranasal vasopressin, OT, or saline, and then paired them with the youngest marmoset in the family. Caregivers were given preferred food, and then observed for food sharing and aggressive behavior with young marmosets. OT reduced food sharing from male alloparents to youngest siblings, and fathers that received vasopressin refused to share food with their youngest offspring more often than when treated with OT. Vasopressin increased aggressive vocalizations directed toward potential food recipients in all classes of caregivers. These results indicate that vasopressin and OT do not always enhance prosocial behavior: modulation of food sharing depends on both sex and parental status.
催产素（OT）对泌乳和母性行为至关重要，但OT及相关九肽抗利尿激素对父本和异亲的照料行为也很重要。本实验测试了抗利尿激素和OT对狨猴家庭中食物分享的影响。我们给照料者（父母、兄弟姐妹）鼻内注射抗利尿激素、OT或生理盐水，然后将他们与家庭中最小的狨猴配对。给照料者提供偏好的食物，然后观察他们与幼狨猴之间的食物分享和攻击行为。OT减少了雄性异亲向最小的兄弟姐妹分享食物的行为，接受抗利尿激素治疗的父亲比接受OT治疗时更频繁地拒绝与最小的后代分享食物。抗利尿激素增加了所有照料者对潜在食物接受者发出的攻击性叫声。这些结果表明，抗利尿激素和OT并不总是增强亲社会行为：食物分享的调节取决于性别和父母身份。
