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Results of Testing the Comparatory Method: The Curvature of the Shell Valve Frontal Section Is Inappropriate as a Systematic Character for the Freshwater Pearl Mussel of the Genus Margaritifera

机译:比较方法的测试结果:壳瓣正面的曲率不适合作为玛格丽特酒属淡水珍珠贻贝的系统特征

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摘要

This paper continues a discussion on the number of pearl mussel species of the genus Margaritifera in northern Europe. A biometric study of 1711 pearl mussel Margaritifera margaritifera shells from 15 rivers in Russia and Latvia (basins of the White and Baltic seas) has been conducted. All the examined samples fall into two groups: the northern group (with the shells more flattened on average, f. margaritifera) and the southern one (with more convex shells, f. elongata); the boundary between these groups is at 63° N. Analysis of intrapopulation variation has shown that the samples contain individuals that correspond to f. margaritifera, f. elongata, and f. borealis. However, any hiatus between these forms is absent in all the samples, and individuals belonging to two intermediate forms are rather frequent. The hypothesis on the species specificity of the shell valve frontal section has not been confirmed based on examination of large shell samples. The pearl mussels inhabiting rivers of Northern Europe belong to a single species, M. margaritifera.
机译:本文继续讨论了北欧玛格丽特(Margaritifera)属珍珠贻贝的数量。对来自俄罗斯和拉脱维亚(白波罗的海和波罗的海的流域)的15条河流的1711颗珍珠贻贝玛格丽塔酒(Margaritifera)贝壳进行了生物识别研究。所有检查的样品分为两类:北部组(平均壳扁平,玛格丽特f。margaritifera)和南部组(具有更多凸壳,f。elongata);这些群体之间的边界在63°N。种群内变异的分析表明,样本包含与f对应的个体。玛格丽塔酒伸长率和f。北极但是,在所有样本中都不存在这些形式之间的任何中断,并且属于两种中间形式的个体相当频繁。通过检查大型贝壳样品,尚未确认关于贝壳阀额叶前部物种特异性的假说。栖息在北欧河流中的珍珠贻贝属于单一物种,玛格丽特玛格丽塔。

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  • 来源
    《Biology Bulletin》 |2013年第2期|221-231|共11页
  • 作者单位

    Institute of Ecological Problems of the North, Ural Branch, Russian Academy of Sciences,nab. Severnoi Dviny 23, Arkhangelsk, 163000 Russia;

    Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Leninskii pr. 33, Moscow, 119071 Russia;

    Institute of Ecological Problems of the North, Ural Branch, Russian Academy of Sciences,nab. Severnoi Dviny 23, Arkhangelsk, 163000 Russia;

    Institute of Ecological Problems of the North, Ural Branch, Russian Academy of Sciences,nab. Severnoi Dviny 23, Arkhangelsk, 163000 Russia;

    Institute of Ecological Problems of the North, Ural Branch, Russian Academy of Sciences,nab. Severnoi Dviny 23, Arkhangelsk, 163000 Russia;

    Norwegian Institutefor Agricultural and Environmental Research (Bioforsk), Svanhovd, N-9925, Svanvik, Norway;

    Institute of Ecological Problems of the North, Ural Branch, Russian Academy of Sciences,nab. Severnoi Dviny 23, Arkhangelsk, 163000 Russia;

    St. Petersburg State University, Universitetskaya nab. 7/9, St. Petersburg, 199034 Russia;

    Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Leninskii pr. 33, Moscow, 119071 Russia;

    Institute of Ecological Problems of the North, Ural Branch, Russian Academy of Sciences,nab. Severnoi Dviny 23, Arkhangelsk, 163000 Russia;

    Latvian University, bulv. Kronval'da 4, Riga, LV-1586 Latvia;

    Latvian University, bulv. Kronval'da 4, Riga, LV-1586 Latvia;

    Papanin Institute of the Biology of Inland Waters, Russian Academy of Sciences,Borok, Nekouzraion, Yaroslavl ob/ast, 152742 Russia;

    Institute of Ecological Problems of the North, Ural Branch, Russian Academy of Sciences,nab. Severnoi Dviny 23, Arkhangelsk, 163000 Russia;

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