Brunelli S A, Masmela J R, Shair H N, Hofer M A
College of Physicians and Surgeons, Columbia University, New York, New York, USA.
J Comp Psychol. 1998 Dec;112(4):331-43. doi: 10.1037/0735-7036.112.4.331.
This study investigated the influence of social rearing on ultrasonic vocalization (USV) responses of 11- to 12-day-old rat (Rattus norvegicus) pups in isolation to the presence or removal of an anesthetized adult. Pups were reared with the dam or dam plus a virgin female (aunt), their biological sire, or a castrated male. All pups reduced rates of USV in contact with anesthetized adults. Pups' USV rates after the adult's removal depended on their rearing experience. After removal of the dam, pups increased USV rates over baseline (potentiation). Pups reared with aunts potentiated USV after contact with adult females but suppressed USV after contact with males. Pups reared with sires potentiated USV after contact with sires or strange males. Pups reared with castrated males did not suppress USV after contact with castrates but did after contact with unfamiliar intact males. Thus, pups' differential USV responses to contact with passive adults in isolation can be acquired during prior rearing experience.
本研究调查了群居饲养对11至12日龄大鼠（褐家鼠）幼崽单独与麻醉的成年鼠接触或成年鼠被移走时超声发声（USV）反应的影响。幼崽与母鼠、或母鼠加一只未生育的雌性（阿姨）、它们的亲生父亲、或一只去势雄鼠一起饲养。所有幼崽在与麻醉的成年鼠接触时超声发声频率均降低。成年鼠被移走后幼崽的超声发声频率取决于它们的饲养经历。母鼠被移走后，幼崽的超声发声频率高于基线水平（增强）。与阿姨一起饲养的幼崽在与成年雌性接触后超声发声增强，但在与雄性接触后超声发声受到抑制。与父亲一起饲养的幼崽在与父亲或陌生雄性接触后超声发声增强。与去势雄鼠一起饲养的幼崽在与去势雄鼠接触后并未抑制超声发声，但在与不熟悉的未去势雄鼠接触后会抑制超声发声。因此，幼崽在单独与被动成年鼠接触时超声发声的不同反应可在之前的饲养经历中习得。
