CONTINUOUS RECORDING OF MATERNAL BEHAVIOUR IN RATTUS-NORVEGICUS
CONTINUOUS RECORDING OF MATERNAL BEHAVIOUR IN RATTUS-NORVEGICUS
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DOI：
10.1016/s0003-3472(69)80019-9
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发表时间：
1969-01-01
期刊：
影响因子：
2.5
通讯作者：
ADER, R
中科院分区：
文献类型：
--
作者：
GROTA, LJ;ADER, R
据推测，一只哺乳期的老鼠花在幼崽身上的时间可以被认为是母性行为的反映。这是在一个双腔装置中连续测量的，该装置允许雌性在一天中的任何时间与其幼崽在一起或离开它的幼崽。研究发现，在产后21天内，母鱼与幼崽共处的总时间和每一时期的持续时间呈有序减少的趋势。对这些数据的进一步分析表明，母亲的行为有24小时的节律。这种节律似乎与老鼠特有的24小时活动周期成反比，而且可能是它们特有的24小时活动周期的直接反映。将花在小鼠身上的时间与从塞茨母亲行为量表的修改版本中获得的数据进行比较，发现该量表的测试结果随着时间的推移也发生了类似的变化，这些测试没有涉及对母亲或小孩子正在进行的行为的任何干扰。否则，这两个衡量标准之间或在比额表本身内没有一致的关系。对在一个笼子里饲养小猫的雌性进行母性行为量表的测试表明，上述发现可能是由于使用了双腔装置。这些数据进一步表明，母性行为量表的某些方面可能是住房条件或管理方法的产物，可能反映的是情感反应，而不是母性行为本身。对母性行为的连续记录也被发现区分抚养大窝和小窝的雌性。在产后21天内，哺育12只幼崽的雌性比饲养4只幼崽的雌性幼崽与幼崽在一起的时间减少得更快。这些数据被解释为支持这样一种假设，即哺乳期的老鼠与其幼崽共处的时间可以被视为母性行为的反映。这个程序的主要优点是，它提供了一个连续的记录，不受采样误差或实验者偏见的影响，它利用了正在进行的母婴互动，这种互动是由动物自己发起的，而不是由于接近一个笼子或实验者的干预而被迫进行的。
It was assumed that the time a lactating rat spends with its litter can be taken as a reflection of maternal behaviour. This was measured continuously in a dual-chambered apparatus which permitted the female to be with or away from its litter for any amount of time at any time of the day. It was found that the total time and the duration of each period that the mother spends with its litter shows an orderly decrease over the 21 days post-partum. Further analyses of these data indicated that there is a 24-hr rhythm in maternal behaviour. The rhythm appears to be inversely related to and may be a direct reflection of the rat's characteristic 24-hr activity cycle.A comparison of the time spent with the litter with data obtained from a modified version of Seitz's maternal-behaviour scale yielded similar changes over time for those tests of the scale which did not involve any disruption of the ongoing behaviour of the mother or litter. Otherwise, there was no consistent relationship between these two measures or within the scale itself. Administration of the maternal-behaviour scale to females rearing litters in a single cage indicated that the above findings could be attributed to the use of the dual-chambered apparatus. These data further suggested that some aspects of the maternal-behaviour scale may be artifacts of the conditions of housing or method of administration, and may reflect emotional reactivity rather than maternal behaviour, per se.The continuous recording of maternal behaviour was also found to differentiate between females rearing large and small litters. The time spent with the litter over the 21-day post-partum period decreased more rapidly in females rearing litters of twelve than in females rearing litters of four animals.The data are interpreted as support for the assumption that the time that a lactating rat spends with its litter can be taken as a reflection of maternal behaviour. The main advantages of this procedure are that it provides a continuous recording that is not subject to sampling error or experimenter bias, and it takes advantage of the ongoing mother-litter interactions which are initiated by the animals themselves rather than forced by the proximity of a single cage or by the intervention of an experimenter.