Evolutionary discontinuity of the Carabine ground beetles
Evolutionary discontinuity of the Carabine ground beetles
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DOI：
10.1007/s002390010242
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发表时间：
2001-10-01
影响因子：
3.9
通讯作者：
Osawa, S
中科院分区：
文献类型：
--
作者：
Su, ZH;Imura, Y;Osawa, S
卡拉宾地面甲虫大多没有后翼，不能飞行，因此与有翼昆虫相比，由于地理上的孤立，有更多的机会实现多样化。世界地面甲虫的形态多样性与系统发育的关系主要是通过对线粒体ND5基因序列的比较来推断的。根据线粒体DNA“时钟”测年，推测主要卡拉滨基团的爆炸性辐射发生在50-40 MYA。随之而来的是各种不同尺度的偶然辐射，有时伴随着平行的形态变化。也有大量的例子表明，在同一物种内地理上孤立的种群中，基本形态在很长一段时间内保持不变。因此，步甲类的进化将不连续地进行，形态快速变化的阶段与沉默的阶段交替进行。
The Carabine ground beetles are mostly hind wing-less and cannot fly, so that there is more chance of diversification by geographic isolation compared with winged insects. The relationships between morphological diversification and phylogeny of the ground beetles of the world have been inferred mainly by comparisons of mitochondrial ND5 gene sequences. Based on dating by a mitochondrial DNA "clock," it has been deduced that an explosive radiation of the major carabine groups took place 50-40 MYA. This was followed by occasional radiations on various scales, sometimes accompanied by parallel morphological changes. There are also a good number of examples showing that the fundamental morphology has remained unchanged for a long time among geographically isolated populations within the same species. Thus, carabid evolution would have proceeded discontinuously, with phases of rapid morphological change alternating with silent phases.