Deviterne D, Desor D
Laboratoire de Biologie du Comportement, U.R.A. 1293 C.N.R.S., Université de Nancy, France.
Dev Psychobiol. 1990 May;23(4):361-8. doi: 10.1002/dev.420230407.
Discrimination between own-litter pups by mother rats was studied over 14 litters, in a standardized situation eliciting maternal pup-retrieving activity. Results showed some consistency in the order in which pups of a litter were retrieved by the mother in the 4-day and 9-day tests and that this order was related to certain characteristics of the pups: 1) on Day 4 and 9, the best-developed pups of the litter (in terms of body weight and neuromotor behaviors) were first retrieved; 2) on Day 9, sex of pups became an additional discrimination factor, as males were retrieved before their female littermates. Variables included in these global discrimination factors and possible consequences of such differential mother-pups interactions are discussed.
在一个引发母鼠幼崽找回行为的标准化情境中，对14窝母鼠区分自己窝里幼崽的情况进行了研究。结果显示，在4天和9天的测试中，母鼠找回窝里幼崽的顺序存在一定的一致性，且这种顺序与幼崽的某些特征有关：1）在第4天和第9天，窝里发育最好的幼崽（就体重和神经运动行为而言）最先被找回；2）在第9天，幼崽的性别成为另一个区分因素，雄性幼崽比雌性同窝幼崽先被找回。讨论了这些总体区分因素中包含的变量以及这种母幼崽差异互动可能产生的后果。
