Hayes Polly M, Smit Nico J
School of Life Sciences, College of Liberal Arts and Sciences, University of Westminster, 115 New Cavendish St., London, W1W 6UW, UK.
Molecular Parasitology Laboratory, School of Life Sciences, Pharmacy and Chemistry, Kingston University, Kingston upon Thames, Surrey, KT1 2EE, UK.
Int J Parasitol Parasites Wildl. 2019 Feb 1;8:216-220. doi: 10.1016/j.ijppaw.2019.01.006. eCollection 2019 Apr.
is one of the most prevalent haemogregarines of marine fishes and has long been considered an enigmatic and cosmopolitan species. However, to determine whether truly represents a single global species, or whether it should be partitioned into several species or subspecies, and to confirm its taxonomic status among the , molecular analysis is required. Here, we provide the first molecular characterisation of from one of its type hosts, , in the UK using 18S rDNA sequences. Phylogenetic and -distance comparisons of the newly generated sequences with those published from other haemogregarine taxa and related apicomplexans suggest that falls outside of the "" clade as well as the Adeleorina altogether, forming a separate apicomplexan marine clade, and appears to be in fact more closely related to other non-haemogregarine Apicomplexa genera. Further work including sequences of and -like parasites observed from fishes in other localities is now needed to investigate this further.
是海洋鱼类中最普遍的血簇虫之一，长期以来一直被认为是一个神秘的世界性物种。然而，为了确定它是否真的代表一个单一的全球物种，或者是否应该被划分为几个物种或亚种，并确认其在分类学中的地位，需要进行分子分析。在这里，我们使用18S rDNA序列对来自英国其模式宿主之一的进行了首次分子特征分析。将新生成的序列与其他血簇虫类群和相关顶复门寄生虫发表的序列进行系统发育和距离比较，结果表明它完全不属于“”进化枝以及艾美球虫亚纲，而是形成了一个独立的顶复门海洋进化枝，并且实际上似乎与其他非血簇虫顶复门属关系更密切。现在需要进一步开展工作，包括对在其他地区鱼类中观察到的和类似寄生虫的序列进行研究，以进一步探究这一问题。
