Evidence for the presence of two sympatric species of mice (genus Mus L.) in southern France based on biochemical genetics
Evidence for the presence of two sympatric species of mice (genus Mus L.) in southern France based on biochemical genetics
复制标题
基于生化遗传学的证据表明法国南部存在两种同域小鼠（Mus L.）
作者：
J. Britton;L. Thaler
用淀粉凝胶电泳法对室外和室内饲养的小鼠种群进行了24个位点的调查。两个生殖隔离的群体被确认，其中一个是家鼠亚种小家鼠（Mus musculus brevirostris），另一个是不同的物种小家鼠（Mus spretus），这与Schwarz和Schwarz认为地中海盆地只有一种小家鼠的观点相反。这两个类群之间的遗传距离比所调查的任何一对肌肉支原体亚种之间的遗传距离都要大。从生物化学的角度来看，短枝m.m . brevirostris与家养m.m . home几乎无法区分。另一方面，在肌肉分枝杆菌中，spretus表现出一些未知的或最罕见的等位基因变异，例如在乳酸脱氢酶b链位点。
Populations of mice established outdoors as well as indoors have been investigated at 24 loci using starch gel electrophoresis. Two reproductively isolated groups are recognized, one of which is referable to a house mouse subspecies, Mus musculus brevirostris, and the other to a different species, Mus spretus, contrary to the view of Schwarz and Schwarz that only one species of Mus is present in the Mediterranean Basin. The genetic distance between these two groups is larger than between any pair of investigated subspecies of M. musculus. M. m. brevirostris is biochemically almost indistinguishable from M. m. domesticus. On the other hand, M. spretus exhibits several allelic variants unknown or at most very infrequent in M. musculus, as for instance at the lactate dehydrogenase B-chain locus.