REDUCED MALE FERTILITY IS COMMON BUT HIGHLY VARIABLE IN FORM AND SEVERITY IN A NATURAL HOUSE MOUSE HYBRID ZONE

REDUCED MALE FERTILITY IS COMMON BUT HIGHLY VARIABLE IN FORM AND SEVERITY IN A NATURAL HOUSE MOUSE HYBRID ZONE
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在自然家鼠杂交区,雄性生育力下降很常见,但其形式和严重程度差异很大

DOI:
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发表时间:
2012
期刊:
Evolution; international journal of organic evolution
影响因子:
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通讯作者:
B. Harr
B. Harr
中科院分区:
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文献类型:
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作者:
L. Turner;D. Schwahn;B. Harr

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自然杂交类群之间基因流动的障碍揭示了物种形成的初始阶段。杂交繁殖力降低是最近分化物种之间生殖障碍的一个共同特征。在家鼠(Mus musculus)中,通过亚种之间的实验杂交,对杂种雄性不育性进行了广泛的研究。在这里,我们展示了欧洲 M. m. 杂交雄性生育力的第一张详细图片。家蝇—M.米。肌肉 混合区。完全不育在自然杂交种中很少见或不存在,但很大一部分雄性(~30%)的精子数量或相对睾丸重量低于纯亚种的范围,并且可能会遭受生育能力下降的影响。对生育力低下男性的一系列与生育力相关的性状进行比较表明,接触区杂种生育力的降低在个体和祖先群体之间存在很大差异,其存在的精子发生缺陷的类型、数量和严重程度。总而言之,这些结果表明多种潜在的遗传不相容性正在杂交区域中分离,这可能导致亚种之间的生殖隔离。
Barriers to gene flow between naturally hybridizing taxa reveal the initial stages of speciation. Reduced hybrid fertility is a common feature of reproductive barriers separating recently diverged species. In house mice (Mus musculus), hybrid male sterility has been studied extensively using experimental crosses between subspecies. Here, we present the first detailed picture of hybrid male fertility in the European M. m. domesticus—M. m. musculus hybrid zone. Complete sterility appears rare or absent in natural hybrids but a large proportion of males (∼30%) have sperm count or relative testis weight below the range in pure subspecies, and likely suffer reduced fertility. Comparison of a suite of traits related to fertility among subfertile males indicates reduced hybrid fertility in the contact zone is highly variable among individuals and ancestry groups in the type, number, and severity of spermatogenesis defects present. Taken together, these results suggest multiple underlying genetic incompatibilities are segregating in the hybrid zone, which likely contribute to reproductive isolation between subspecies.
利用染色体缺陷对小鼠 t 复合体中雄性生育力和减数分裂驱动数量性状基因座进行物理绘图。
DOI: 10.1093/genetics/155.2.803
发表时间: 2000
期刊: Genetics
影响因子: 3.3
作者:
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通讯作者: Schimenti,JC
野生群体中小鼠 t 单倍型的低频率不能用减数分裂驱动的修饰因子来解释。
DOI: 10.1093/genetics/144.4.1787
发表时间: 1996
期刊: Genetics
影响因子: 3.3
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通讯作者: Silver,LM
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发表时间: 2008-03-01
期刊: GENOME RESEARCH
影响因子: 7
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DOI: 10.1101/gr.6757907
发表时间: 2008-01-01
期刊: GENOME RESEARCH
影响因子: 7
作者:
Teeter, Katherine C.;Payseur, Bret A.;Tucker, Priscilla K.
通讯作者: Tucker, Priscilla K.