俄罗斯欧洲部分东北部常见蟾蜍Bufo Bufo L.的分布和形态特征

A. Bobretsov, N. M. Bykhovets, S. K. Kochanov, A. N. Petrov
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引用次数: 1

摘要

讨论了俄罗斯欧洲部分东北地区蟾蜍的分布和形态特征。该地区物种分布范围的北部边界具有复杂的结构。在西部和中部,蟾蜍分布在北纬65º42′和63º01′,其栖息地的东部边界向北移动至64º13′,然后沿乌拉尔山脉向南下降。该地区现代物种范围的形成受到广泛的水道网络和全球气候变化的影响。在过去的70年里,蟾蜍沿着Pechora河分布了600多公里。以科米共和国4个地区(Pechora、Beloye湖、Lokchim湖和Sysola湖)为例,采用13个线性标准和7个指标对蟾蜍形态变异进行了估计。在大多数标准中发现了显著的性别差异:女性的值高于男性。居住在东部和北部地区(Pechora, Beloye湖)的两性蟾蜍比该地区西南部地区(Lokchim湖,Sysola湖)的动物体型要小。判别分析表明,样本之间的最大差异是体长L.,股骨长度F.,胫骨长度T.,头长l.c.和头纬度Lt.c。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Distribution and morphometric features of the common toad Bufo bufo L. (Bufonidae, Amphibia) in the North-East of the European part of Russia
The distribution and morphometric features of the common toad (Bufo bufo) in the North-East of European Russia are discussed. The northern boundary of the species' range in the region has a complex configuration. In the west and central part of the region, the toad is found up to latitude 65º42'N and 63º01'N, respectively, the eastern border of its habitat moves northwards up to 64º13' and then drops to the south along the Ural Mountain Ridge. The formation of the modern range of the species in the region was influenced by an extensive network of watercourses and global climate changes. For the last 70 years, toads have distributed along the Pechora River at a distance of more than 600 km. The morphometric variability of the common toad was estimated by 13 linear criteria and 7 indices on the example of four localities in the Komi Republic (Pechora, Beloye Lake, Lokchim Lake, and Sysola Lake). Significant sexual differences were found by most criteria: their values in females are higher than in males. Toads of both sexes inhabiting the eastern and northern localities (Pechora, Lake Beloye) are smaller in size than animals from the southwestern parts of the region (Lokchim Lake, Sysola Lake). Discriminant analysis showed that maximal differences between samples were registered on the body length L., femur length F., tibia length T., head length L.c., and head latitude Lt.c.
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