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首页> 外文期刊>Parasitology Research >Phylogeny of freshwater parasitic copepods in the Ergasilidae (Copepoda: Poecilostomatoida) based on 18S and 28S rDNA sequences.
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Phylogeny of freshwater parasitic copepods in the Ergasilidae (Copepoda: Poecilostomatoida) based on 18S and 28S rDNA sequences.

机译：基于18S和28S rDNA序列的Er亚科（Copepoda：Poecilostomatoida）中淡水寄生co足类的系统发生。

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摘要

The phylogenetic relationships among the Ergasilidae genera are poorly understood. In this study, 14 species from four genera in the Ergasilidae including Sinergasilus, Ergasilus, Pseudergasilus, and Paraergasilus were collected in China, and their phylogenetic relationships were examined using neighbor-joining, maximum parsimony, maximum likelihood, and Bayesian inference methods based on partial sequences of 18S and 28S ribosomal deoxyribonucleic acid, respectively. All the analyses suggest that the Sinergasilus and Paraergasilus are both monophyletic, but the Ergasilus is polyphyletic rather than monophyletic. Considering the relationships among the four genera, the phylogenetic analyses and subsequent hypothesis tests all suggest that Pseudergasilus clustered with some Ergasilus species may have a closer relationship with Sinergasilus rather than with Paraergasilus. It is proposed that the Sinergasilus and the Pseudergasilus species might have evolved from Ergasilus species.
机译：人们对Ergasilidae属之间的系统发育关系了解甚少。在本研究中，我们在中国收集了来自中华gas属的四个属的14个种，包括中华ner属，中华s属，假单胞菌属和副寄生虫，并利用邻域连接，最大简约，最大似然和基于部分偏态的贝叶斯推断方法研究了它们的系统发生关系。分别是18S和28S核糖体脱氧核糖核酸序列。所有分析都表明，Sinergasilus和Paraergasilus都是单系的，但是Ergasilus是多系的，而不是单系的。考虑到这四个属之间的关系，系统发育分析和随后的假设检验均表明，聚积有一些欧氏il属物种的假单胞菌可能与西氏gas属而不是与平行er属有更紧密的关系。有人提出，Sinergasilus和Pseudergasilus物种可能已经从Ergasilus物种进化而来。

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