Henderson N D
J Comp Physiol Psychol. 1978 Feb;92(1):118-25. doi: 10.1037/h0077429.
Locomotor activity of 2,140 four-day-old inbred, hybrid, and wild mice was measured. Consonant with the prediction that high rates of locomotor activity would be maladaptive in infant mice, hybrids were less active than inbred lines. A triple test cross analysis indicated low heritability and nearly complete dominance toward low activity. Mice from wild stock were even less active than hybrids, which suggests that selection pressures for low infantile activity have relaxed during laboratory domestication. A test is described for estimating changes in selection pressures resulting from laboratory rearing.
对2140只4日龄的近交系、杂交系和野生小鼠的运动活性进行了测量。与高运动活性对幼鼠具有适应不良性这一预测一致，杂交系小鼠的活性低于近交系。三重测交分析表明遗传力低，且对低活性几乎完全显性。野生种群的小鼠比杂交系小鼠的活性更低，这表明在实验室驯化过程中，对低幼体活性的选择压力有所放松。本文描述了一种用于估计实验室饲养导致的选择压力变化的测试方法。
