Abstract — The ratio of the lengths of the second and fourth fingers (2D : 4D) is used as a marker of prenatal androgenization. A similar ratio of finger lengths 2D : 4D was found in humans and many animal species. Morphological markers of prenatal effects are important in population studies. The 2D : 4D digit ratio in males and females of a water vole ( Arvicola amphibius L.) was measured. The analysis of the dependence of this index on gender and the morphophysiological characteristics of the mother (body weight after parturition, testosterone level during pregnancy) was carried out. A similarity was found between littermates in terms of finger index. It was found that the androgen status of the mother during pregnancy and the body weight of the mother after parturition reliably affect the 2D : 4D ratio. The conclusion about the possibility of using the 2D : 4D digit ratio in environmental population studies as a marker of prenatal hormone-related maternal effects was made.

中文翻译：

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水田鼠（Arvicola amphibius L.）的第二和第四指长度比（2D : 4D）对产前发育条件的依赖性

摘要 — 中指和无名指的长度比 (2D : 4D) 被用作产前雄激素化的标志。在人类和许多动物物种中发现了类似的 2D : 4D 手指长度比例。产前效应的形态学标志物在人口研究中很重要。测量了雄性和雌性水田鼠 (Arvicola amphibius L.) 的 2D : 4D 手指比例。对该指数对性别和母亲形态生理特征（产后体重、孕期睾酮水平）的依赖性进行了分析。在手指指数方面发现同窝仔之间的相似性。研究发现，怀孕期间母亲的雄激素状态和分娩后母亲的体重会可靠地影响 2D : 4D 比率。