Background

Monogenean parasites of the genus Dactylogyrus Diesing, 1850 parasitize mostly gills of cyprinoids hosts. Of 100 species currently known from African continent, approximately 35 have been described from Enteromius spp. Results of recent studies indicate that there are still many undescribed species of the genus Dactylogyrus in South Africa and systematic surveys can bring many new findings.

Methods

During the period April 2015–May 2016, three species of the genus Enteromius were sampled from eight localities across Limpopo Province. Monogenean parasites were collected from the gills of the hosts using stereomicroscopes. Morphometric analysis of the hard parts of the attachment organ and male copulatory organs were performed to confirm species identity.

Results

Presence of three new and three previously described Dactylogyrus species is reported. Newly described species include: Dactylogyrus afrohamiltoni sp. nov. from Enteromius afrohamiltoni; Dactylogyrus limpopoensis sp. nov. and Dactylogyrus letabaensis sp. nov. from Enteromius unitaeniatus. In addition, Dactylogyrus afrolongicornis, Dactylogyrus allolongionchus and Dactylogyrus myersi were identified from Enteromius trimaculatus. Newly identified species possess morphometric characters based on which they can be clearly identified from currently known species.

Conclusion

Present results show that small barbs, especially those not previously studied for monogenean parasites, are potentially very interesting target to study to recover new species of the genus Dactylogyrus and to bring new contribution to the knowledge of the diversity of African parasites.

中文翻译：

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拟杆菌属 （Enterogenus spp。的ill）中的（Monogenea，Dactylogyridae）。（Cyprinformes，Cyprinidae）来自南非林波波省，描述了三种新种。

背景

Dactylogyrus Diesing属的单种寄生虫，1850年主要寄生于类hosts宿主的g上。目前从非洲大陆已知的100个物种中，Enteromius spp已描述了大约35种。最近的研究结果表明，仍有属的许多未描述的物种指环在南非和系统的调查可以带来很多新的发现。

方法

在2015年4月至2016年5月期间，从林波波省的八个地方采样了三种Enteromius菌种。使用立体显微镜从宿主的腮中收集单基因寄生虫。对附着器官和男性交配器官的硬部分进行形态分析，以确认物种身份。

结果

据报道存在三种新的和先前描述的三种乳杆菌属。最新描述的物种包括：乳杆菌（Dactylogyrus afrohamiltoni sp。）。十一月 来自非洲肠沙门氏菌; 指环虫limpopoensis SP。十一月 和指环虫letabaensis SP。十一月 取自unitominiatus肠虫。此外，指环虫afrolongicornis，指环虫allolongionchus和指环myersi从鉴定Enteromius trimaculatus。新识别的物种具有形态特征，可以根据这些特征从当前已知的物种中清楚地识别它们。

结论

目前的结果表明，小的倒钩，特别是那些以前没有为单基因寄生虫研究的倒钩，是潜在的非常有趣的研究对象，目的是寻找新的棘皮rus属物种并为非洲寄生虫的多样性知识做出新的贡献。