Maleki Loghman, Shahmoradi Mastoreh, Golzarianpour Kiavash
Department of Biological Sciences, Faculty of Science, University of Kurdistan, Sanandaj, Iran.
Department of Biology, Faculty of Sciences and Engineering, Gonbad Kavous University, Golestan, Iran.
J Parasitol. 2025 Jul 1;111(4):431-440. doi: 10.1645/24-102.
The systematics of the family Pleurogenidae Looss, 1899, has been significantly revised in recent years, with the addition of 7 new genera based on molecular data. Despite these advancements, this family still lacks a definitive morphological synapomorphy. It encompasses genera with considerable morphological diversity, parasitizing a wide range of host groups across the globe. In the present study, we describe Parapleurogenoides n. gen., a new genus within the Pleurogenidae, discovered in the Levant water frog, Pelophylax bedriagae (Camerano, 1882), from the Sanandaj region of western Iran. This new genus is distinguished by its pyriform body shape, vitelline glands with a limited number of follicles, and a Y-shaped excretory vesicle. To investigate its phylogenetic relationships, a dataset of partial 28S rRNA sequences was generated, including all Pleurogenidae species available in GenBank. The phylogenetic analysis reveals that Parapleurogenoides kurdistanensis n. sp. and cercariae from Vietnam form a distinct clade, which is sister to Pleurogenes claviger (Rudolphi, 1819) and Pleurogenoides medians (Olsson, 1876). These clades are classified within Pleurogenidae, a family known for parasitizing amphibians. Moreover, the relationships within Pleurogenidae and the taxonomy of the genus Pleurogenoides Travassos, 1921, are re-evaluated based on morphological traits and the potential inclusion of other species previously assigned to this genus.
1899年卢斯建立的侧殖科（Pleurogenidae）的系统分类近年来有了重大修订，基于分子数据新增了7个新属。尽管有这些进展，但该科仍缺乏明确的形态学共衍征。它包含形态差异相当大的属，寄生于全球广泛的宿主类群。在本研究中，我们描述了新属拟侧殖属（Parapleurogenoides n. gen.），这是在伊朗西部萨南达季地区的黎凡特水蛙（Pelophylax bedriagae，卡梅拉诺，1882年）中发现的侧殖科内的一个新属。这个新属的特征是梨形的身体形状、卵泡数量有限的卵黄腺以及Y形的排泄囊。为了研究其系统发育关系，生成了一个部分28S rRNA序列的数据集，包括GenBank中所有可用的侧殖科物种。系统发育分析表明，库尔德拟侧殖吸虫（Parapleurogenoides kurdistanensis n. sp.）和来自越南的尾蚴形成一个独特的分支，它是棒形侧殖吸虫（Pleurogenes claviger，鲁道夫，1819年）和中型拟侧殖吸虫（Pleurogenoides medians，奥尔松，1876年）的姐妹分支。这些分支被归类在侧殖科内，该科以寄生于两栖动物而闻名。此外，基于形态特征以及可能纳入先前归属于该属的其他物种，对侧殖科内的关系以及1921年特拉瓦索斯的拟侧殖属的分类进行了重新评估。
