Department of Botany and Zoology, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic.
Institute of Vertebrate Biology, Academy of Sciences of the Czech Republic, v.v.i., Květná 8, 603 65 Brno, Czech Republic.
Biomed Res Int. 2018 Mar 11;2018:6983740. doi: 10.1155/2018/6983740. eCollection 2018.
is an extraordinary cyprinid species exhibiting both sexual and asexual reproduction. We hypothesized that parasitism selection is one of the potential mechanisms contributing to the coexistence of the two reproductive forms of living in the same habitat. We performed a four-year study to investigate the dynamics of parasite infection in . According to the Red Queen prediction, the asexual form is a target of parasite adaptation due to its low genetic variability. Both sexual and gynogenetic forms of exhibited similar levels of prevalence, with monogeneans being the most frequently observed parasite group. We observed the temporal dynamics of parasite infection in the last year of investigation, when both forms were more strongly parasitized. The sexual form was more parasitized by ectoparasites in the first and last years and less parasitized by nematodes in the last year when compared to the gynogenetic form. We found no trend of high parasite infection in gynogenetic mtDNA haplotypes. We conclude that Red Queen dynamics is not the mechanism driving parasite infection in sexual-gynogenetic over a long time scale. Alternatively, we suggest that the dynamics of parasite infection in this complex may be generated by multiple mechanisms.
是一种具有两性和孤雌生殖的非凡鲤科鱼类。我们假设寄生选择是导致这两种生殖形式在同一栖息地共存的潜在机制之一。我们进行了为期四年的研究，以调查 寄生虫感染的动态。根据红皇后预测，由于其遗传变异性低，无性形式是寄生虫适应的目标。有性和雌核发育形式的 均表现出相似的流行率，单殖吸虫是最常见的寄生虫群体。我们观察了在调查的最后一年寄生虫感染的时间动态，当时两种形式都受到更强的寄生虫感染。与雌核发育形式相比，有性形式在第一年和最后一年受到外寄生虫的感染更多，而在最后一年受到线虫的感染更少。我们没有发现高寄生虫感染与雌核发育 mtDNA 单倍型相关的趋势。我们的结论是，红皇后动态不是导致性-雌核发育 在长时间尺度上寄生虫感染的机制。或者，我们建议这种复杂情况的寄生虫感染动态可能是由多种机制产生的。
