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首页> 外文期刊>Zoologica Scripta: An International Journal of Evolutionary Zoology >The mitochondrial genome of the water spider Argyroneta aquatica (Araneae: Cybaeidae)
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The mitochondrial genome of the water spider Argyroneta aquatica (Araneae: Cybaeidae)

机译：水蜘蛛Argyroneta aquatica（Araneae：Cybaeidae）的线粒体基因组

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摘要

We sequenced nearly the entire mitochondrial genome of Argyroneta aquatica, a wholly underwater-living spider, thereby enhancing the available genomic information for Arachnida. The confirmed sequences contained the complete set of known genes present in other metazoan mitochondrial genomes. However, the mitochondrial gene order of A. aquatica was distinctly different from that of the most distant Chelicerata Limulus polyphemus (Xiphosura), probably because of a series of gene translocations and/or inversions. Comparison of arachnid mitochondrial gene orders for the purpose of phylogenetic inference is only minimally useful, but provides a strong signal in closely related lineages. To test the basal relationships and the evolutionary pattern of tRNA gene rearrangements among Arachnida, phylogenetic analyses using amino acid sequences of the 13 protein-coding genes were performed. An interesting feature, the five 135-bp tandem repeats and two 363-bp tandem repeats, was identified in the putative control region. Although control region tandem repeats have been reported in many other arachnid and metazoan species, this is the first time it has been described in spiders.
机译：我们对Argyroneta aquatica（一种完全在水下生活的蜘蛛）的几乎整个线粒体基因组进行了测序，从而增强了Arachnida的可用基因组信息。证实的序列包含存在于其他后生线粒体基因组中的完整已知基因集。但是，水产曲霉的线粒体基因顺序与最远的奇异鳞Che（Xiphosura）的线粒体基因顺序明显不同，这可能是由于一系列基因易位和/或倒位造成的。出于系统发育推断的目的，比较蛛网线粒体基因顺序的作用很小，但在密切相关的谱系中提供了强烈的信号。为了测试蛛形纲中tRNA基因重排的基础关系和进化模式，使用13种蛋白质编码基因的氨基酸序列进行了系统发育分析。在推定的控制区域中发现了一个有趣的特征，即五个135 bp的串联重复序列和两个363 bp的串联重复序列。尽管在许多其他蜘蛛纲和后生动物物种中都报道了控制区串联重复序列，但这是第一次在蜘蛛中发现。

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