Developmental stability, fitness, and trait size in laboratory hybrids between European subspecies of the house mouse
Developmental stability, fitness, and trait size in laboratory hybrids between European subspecies of the house mouse
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DOI：
10.2307/2411057
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发表时间：
1997-08-01
期刊：
影响因子：
3.3
通讯作者：
Auffray, JC
中科院分区：
文献类型：
--
作者：
Alibert, P;FelClair, F;Auffray, JC
以随机繁育的家鼠（Mus musculus arcticus）和小家鼠（M. musculus arcticus）为材料，研究了杂交对家鼠种间发育稳定性和牙齿大小性状的影响。肌肉）。波动不对称性（FA）和性状的大小进行了比较内和之间的父母，F-1，回交，和F-2杂种组。并研究了FA与F1代生殖适合度的关系。结果表明，两个亚种之间的FA和字符大小水平的差异显着。杂种F-1和重组组（回交和F-2杂种）表现出这两个参数的杂种优势。与丹麦杂交区的野生群体相比，实验室培育的F1代可育和不育杂交个体的FA水平均低于野生群体。这项研究提供了进一步的证据表明，在杂交后代中，我们研究的大多数形态学线索的基础上的发展过程中受益于杂种优势效应，尽管基因组不相容的两个欧洲家鼠之间揭示了以前的遗传学和寄生虫学研究。
The effects of hybridization on developmental stability and size of tooth characters were investigated in intersubspecific crosses between random-bred wild strains of the house mouse (Mus musculus domesticus and M.m. musculus). Fluctuating asymmetry (FA) and trait size were compared within and between parental, F-1, backcross, and F-2 hybrid groups. The relationship between FA and reproductive fitness within the F-1 hybrids was also studied. The results indicated that both FA and character size levels differed significantly between the two subspecies. The F-1 hybrids and the recombined groups (backcrosses and F-2 hybrids) showed heterosis for both parameters. No significant differences in the FA of fertile and sterile F-1 hybrid individuals were found. Comparison of the FA levels obtained in this study with those found in wild populations from the hybrid zone in Denmark showed that the levels of FA were lower in laboratory-bred samples than in the wild populations. This study provides further evidence that, in hybrids, the developmental processes underlying most of the morphological trails we studied benefit from a heterotic effect, despite the genomic incompatibilities between the two European house mice revealed by previous genetical and parasitological studies.