Abstract：
Based on morphology and ITS sequence data, we identify and supplementally describe Gyrodactylus pseudorasborae Ondračková, Seifertová & Tkachenko, 2023 on the fins of topmouth gudgeon (Pseudoraspora parva) from freshwaters of southern China. The highest similarity (99.57% and 99.47%) to G. pseudorasborae suggested they were the same species. Prevalence and mean intensity were 45% and 2.3, respectively. The gyrodactylid species morphologically resembled G. pseudorasborae recorded from the same host species P. parva in Czech Republic, Ukraine, and Central China. But there were slight morphological differences in the shape and size of the marginal hook. Comparisons of marginal hook sickles of various Gyrodactylus species suggested that G. pseudorasborae and G. parvae were members of the G. wageneri-group. A molecular phylogeny of G. pseudorasborae with related species is presented and discussed within the context of the mechanism of local evolution of these sister species.
摘要：
基于形态学和ITS序列数据，我们鉴定并补充描述了双足假肢Ondračková，Seifertová&Tkachenko,2023年，来自中国南方淡水的高嘴gudgeon（Pseudorasporaparva）的鳍上。与假单胞菌的最高相似性（99.57％和99.47％）表明它们是同一物种。患病率和平均强度分别为45％和2.3。从捷克共和国的同一宿主物种P.parva中记录到的gydactylid物种在形态上类似于G.pseudorasborae，乌克兰,和中国中部。但边缘钩的形状和大小有轻微的形态差异。各种Gyrodactylus物种的边缘钩镰刀的比较表明，假性G.pseudorasborae和G.parvae是G.wageneri组的成员。在这些姐妹物种的局部进化机制的背景下，提出并讨论了具有相关物种的假单胞菌的分子系统发育。
