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首页> 外文期刊>Biological Journal of the Linnean Society >Analysis of segment number and enzyme variation in a centipede reveals a cryptic species, Geophilus easoni sp nov., and raises questions about speciation
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Analysis of segment number and enzyme variation in a centipede reveals a cryptic species, Geophilus easoni sp nov., and raises questions about speciation

机译：对of中节段数和酶变异的分析揭示了一种隐性物种Geophilus easoni sp nov。，并提出了有关物种形成的问题

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摘要

Geophilomorph centipedes provide an unusual opportunity to examine patterns of variation in segment number within extant species. (Most other arthropod species are invariant in this respect.) Recent work on several geophilomorph species has revealed latitudinal clines in segment number, but has generally not called into question the identities of the species themselves. However, analysis of a unique pattern of variation in British populations of Geophilus carpophagus Leach, coupled with other morphological and enzyme data, reveals a cryptic species, Geophilus easoni sp. nov. This species has not yet been detected on the European mainland. Four distinct hypotheses are advanced regarding the speciation event through which G. easoni arose and the phylogeographic processes that resulted in the present distributions of the two species in Britain. Further study will be necessary to test these hypotheses. In any event, G. carpophagus and G. easoni provide something that has until now been absent: a case study of the genetic differences between closely-related geophilomorph species.
机译：基因型ophil提供了一个难得的机会来检查现存物种中节数的变化模式。 （在这方面，大多数其他节肢动物物种是不变的。）最近对几种嗜地栖类物种的研究揭示了片段数上的纬度cline，但通常并未质疑该物种本身的身份。然而，对英国嗜盐菌嗜盐菌种群的独特变异模式进行分析后，再结合其他形态学和酶学数据，揭示了一种隐性物种，即嗜地缘菌。十一月在欧洲大陆上尚未发现该物种。提出了四种不同的假说，分别涉及伊索菌（G. easoni）的物种形成事件以及导致这两种物种在英国分布的系统地理学过程。为了检验这些假设，有必要进行进一步的研究。无论如何，Carpophagus和Easoni所提供的东西到现在都还不存在：以密切相关的嗜地球菌种之间的遗传差异为例。

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