The quantitative parameters of mantle attachment scars have been studied in freshwater mussel Margaritifera dahurica Middendorff, 1850 (Margaritiferidae, Bivalvia) for the populations of the Amur River (Zabaykalsky krai). It is shown that the density of mantle attachment scars is approximately the same for all shells studied, regardless of their age: an average of 0.72 attachment scars/cm². According to a two-way analysis of variance, mantle attachment scars are distributed unevenly over the surface of the shell. Their density is the greatest at the caudal and anterial edges. The average diameter of mantle attachment scars for an individual depends on the length of the shell. This dependence can be described by the linear regression equation with a regression coefficient of 0.0012 ± 0.0001. Questions about the possibility of using the measured parameters to identify the species and/or genus of mollusks are discussed.

中文翻译：

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玛格丽特酵母壳上的地幔附着伤痕的定量评估

已经在1850年淡水贻贝Margaritifera dahurica Middendorff（Margaritiferidae，Bivalvia）中针对阿穆尔河（Zabaykalsky krai）的种群研究了地幔附着疤痕的定量参数。结果表明，所研究的所有贝壳，不论其年龄如何，其幔结附着疤的密度均大致相同：平均0.72附着疤/ cm ²。根据方差的双向分析，地幔附着伤痕在壳体表面上分布不均匀。它们的密度在尾和前缘最大。每个人的地幔附着疤痕的平均直径取决于壳的长度。这种依赖性可以通过线性回归方程描述，回归系数为0.0012±0.0001。讨论了有关使用测得的参数识别软体动物的种类和/或属的可能性的问题。