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Evolutionary Aspects of Hair Polymorphism

机译:头发多态性的进化方面

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摘要

Polymorphism of hair was considered in terms of their origin in mammalian evolution. Vibrissae significantly differ from hairs by the structure. Apparently, they originated from mechanoreceptors of Cotylo-sauria and developed only in the Theriodontia—Cynodontia—Panthotheria—Theria lineage (Metatheria, Eutheria). No vibrissa developed in the lineage of Theriodontia—Cynodontia—Prototheria (Multituberculata, Triconodonta, Monotremata), where mechanoreceptors or glandular structures of amphibian ancestors transformed into electro- and mechanoreceptors. Hairs originated in these lineages in parallel from keratin epidermis in correlation with the establishment of homeothermy but independently of vibrissae. Wide and active adaptive radiation provided for a strong differentiation of hairs largely similar in different taxa. Spines originated by heterochrony of hair generations.
机译:从它们在哺乳动物进化中的起源方面考虑了头发的多态性。触须在结构上与头发明显不同。显然,它们起源于子叶-刀鞘的机械感受器,仅在兽齿-犬齿-黄体-—-门氏菌谱系(Metatheria,Eutheria)中发育。在Theriodontiatia-Cynodontia-Prototheria(Multituberculata,Triconodonta,Monoretmata)的血统中没有触须形成,那里的两栖祖先的机械感受器或腺结构转变为电感受器和机械感受器。毛发起源于这些谱系,与角质层表皮平行,与顺势疗法的建立相关,但与触须无关。广泛而活跃的适应性辐射使头发的强烈分化在不同分类单元中极为相似。脊柱起源于头发世代的异时性。

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  • 来源
    《Biology Bulletin》 |2006年第1期|p.43-52|共10页
  • 作者

    O. F. Chernova;

  • 作者单位

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

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 生物科学;
  • 关键词

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