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弗氏栉鼠（啮齿目-八齿鼠科）异染色质的地理变异及其与该属其他物种的细胞遗传学关系。

Geographical variation of heterochromatin in Ctenomys flamarioni (Rodentia-Octodontidae) and its cytogenetic relationships with other species of the genus.

作者信息

de Freitas T R

机构信息

Departamento de Genética, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil.

出版信息

Cytogenet Cell Genet. 1994;67(3):193-8. doi: 10.1159/000133821.

DOI:10.1159/000133821
PMID:8062596
Abstract

The first karyotype analysis of Ctenomys flamarioni, based on a sample of 46 specimens collected along the geographical range of this species, is reported. All specimens exhibited a diploid number of 48 but varied in autosomal arm number from a low of 50 to a high of 78. The amount of constitutive heterochromatin also varied with the species' geographical distribution. Comparison of G-band patterns showed a strong relationship between the karyotype of this species and those belonging to the Argentinian mendocinus group.

摘要

本文报道了基于在黄毛栉鼠地理分布范围内收集的46个样本所进行的首次核型分析。所有样本的二倍体数目均为48，但常染色体臂数从低至50到高至78不等。组成型异染色质的量也随该物种的地理分布而变化。G带模式比较显示，该物种的核型与阿根廷门多西诺组的核型之间存在密切关系。

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