SELECTIVE PUP RETRIEVING BY MOTHER RATS - SEX AND EARLY DEVELOPMENT CHARACTERISTICS AS DISCRIMINATION FACTORS
SELECTIVE PUP RETRIEVING BY MOTHER RATS - SEX AND EARLY DEVELOPMENT CHARACTERISTICS AS DISCRIMINATION FACTORS
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DOI：
10.1002/dev.420230407
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发表时间：
1990-05-01
影响因子：
2.2
通讯作者：
DESOR, D
中科院分区：
文献类型：
--
作者：
DEVITERNE, D;DESOR, D
在标准化情境下，研究了14窝母鼠对自己窝幼鼠的区别。结果显示，在第4天和第9天的测试中，一窝幼崽被母亲取回的顺序有一定的一致性，这种顺序与幼崽的某些特征有关：在第4天和第9天，一窝中发育最好的幼崽（就体重和神经运动行为而言）首先被取回；在第9天，幼崽的性别成为了一个额外的歧视因素，因为雄性在雌性幼崽之前被取回。讨论了这些全球歧视因素中包含的变量以及这种差异母崽相互作用的可能后果。
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 characterstics of the pups: on Day 4 and 9, the best-developed pups of the litter (in terms of body weight and neuromotor behaviours) were first retrieved; 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 factor and possible consequences of such differential mother-pups interactions are discussed.