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Species limits in avian malaria parasites (Haemosporida): how to move forward in the molecular era.

机译：禽疟原虫的种类限制（Haemosporida）：如何在分子时代前进。

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摘要

Delimiting species of malaria parasites (Haemosporida) has become increasingly problematic as new lineages of parasites are identified solely by molecular information, particularly mitochondrial cytochrome b sequence data. In this review, we highlight some of the issues, both historical and contemporary, that have hindered the development of objective criteria to diagnose, delimit and define species of haemosporidians. Defining species is not the focal interest of most researchers, most of whom merely wish to determine whether lineages identified in their samples match those of other researchers, and if so, where and in which host species. Rather than revisiting all the issues with respect to delimiting and naming species, we instead focus on finding a practical near-term resolution to the 'species problem' that utilizes the community's largest resource: mitochondrial cytochrome b DNA sequences. We recommend a standardized procedure to 'tag' these sequences, based on per cent sequence similarity, that will allow researchers to directly assess the novelty, known hosts and geographic distribution of avian malaria parasite lineages.
机译：由于仅通过分子信息（尤其是线粒体细胞色素b序列数据）识别出新的寄生虫谱系，因此界定疟疾寄生虫（Haemosporida）的物种变得越来越成问题。在这篇综述中，我们重点介绍了一些历史和当代问题，这些问题阻碍了诊断，界定和定义血孢子虫种类的客观标准的发展。定义物种并不是大多数研究人员关注的焦点，大多数研究人员仅希望确定样品中鉴定的谱系是否与其他研究人员的谱系相匹配，如果符合，则在何处以及在哪个寄主物种中。与其重新讨论与划定和命名物种有关的所有问题，我们不如着眼于寻找一种利用该社区最大资源：线粒体细胞色素b DNA序列的“物种问题”的近期解决方案。我们建议根据序列相似性百分比对这些序列进行“标记”的标准化程序，这将使研究人员可以直接评估禽类疟原虫谱系的新颖性，已知宿主和地理分布。

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