New metacentric population of the house mouse (Mus musculus domesticus) found in Valchiavenna, Northern Italy.
New metacentric population of the house mouse (Mus musculus domesticus) found in Valchiavenna, Northern Italy.
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在意大利北部瓦尔基亚文纳发现的新的家鼠（Mus musculus Domesticus）群体。
DOI：
10.1159/000235931
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发表时间：
2009
影响因子：
1.7
通讯作者：
Burt G
中科院分区：
文献类型：
--
作者：
Burt G
虽然西方家鼠（Mus musculus arcticus）的标准核型完全由端着丝粒染色体组成，但在西欧和北非有超过100个种群的特征是由罗伯逊融合和全臂相互易位形成的不同的中着丝粒组。在这里，我们报告的发现一个新的metacentric人口从瓦尔基亚文纳，北方意大利，我们已经命名为“下瓦尔基亚文纳人口”（简称ILVC）。这种中间种群分布在瓦尔基亚文纳南半部10公里范围内的村庄和农场。ILVC的特征是中着丝点1.18，2.4，3.8，5.15，6.7，9.14，10.12，11.13和16.17，似乎是密切相关的基亚索人口（CHCH），其中具有相同的中着丝点集，除了1.18。我们讨论了ILVC的进化起源有关的人类占领该地区。我们还建议，ILVC的地理位置之间的其他2个中间着丝粒种群与完全不同的中间着丝粒集（Chiavenna，ICHI，和较低的Valtellina，ILVA）可能提供2个额外的染色体杂交带的物种形成的研究。
Although the standard karyotype of the western house mouse (Mus musculus domesticus) consists entirely of telocentric chromosomes, there are over 100 populations across western Europe and North Africa characterized by different sets of metacentrics formed by Robertsonian fusions and whole-arm reciprocal translocations. Here we report the discovery of a new metacentric population from Valchiavenna, northern Italy, that we have named the ‘Lower Valchiavenna population’(abbreviated as ILVC). This metacentric population is found in villages and on farms over a 10-kilometer stretch comprising the southern half of Valchiavenna. ILVC is characterized by the metacentrics 1.18, 2.4, 3.8, 5.15, 6.7, 9.14, 10.12, 11.13 and 16.17, and appears to be closely related to the Chiasso population (CHCH), which possesses the same set of metacentrics except 1.18. We discuss the evolutionary origin of ILVC in relation to human occupation of the region. We also suggest that the geographical position of ILVC between 2 other metacentric populations with entirely different sets of metacentrics (Chiavenna, ICHI, and lower Valtellina, ILVA) may provide 2 additional chromosomal hybrid zones for the study of speciation.