Unité Biologie des Organismes et Écosystèmes Aquatiques-BOREA, Sorbonne Université, Museum National d'Histoire Naturelle, SU, MNHN, CNRS, IRD, UCN, UA, CP 26, 43 rue cuvier, 75005 Paris, France; Department of Zoology, Institute of Biosciences, University of São Paulo, 05508-090 São Paulo, Brazil.
Unité Biologie des Organismes et Écosystèmes Aquatiques-BOREA, Sorbonne Université, Museum National d'Histoire Naturelle, SU, MNHN, CNRS, IRD, UCN, UA, CP 26, 43 rue cuvier, 75005 Paris, France.
Infect Genet Evol. 2021 Oct;94:104986. doi: 10.1016/j.meegid.2021.104986. Epub 2021 Jul 8.
Myxosporeans are microscopic cnidarians associated with severe diseases in aquaculture and wild fish populations. This group of parasitic cnidarians thus warrants close attention concerning its potential impact on susceptible fish stocks. At present, little is known about this group of parasites infecting anguillid eels. From myxospore specimens collected from a freshwater eel (Anguilla marmorata) in the Solomon Islands, we describe a new species belonging to the genus Myxobolus based on an integrative taxonomic analysis of morphological, biological traits and molecular data. Furthermore, we determined the phylogenetic position and relationships of this species among other platysporine myxosporeans. Molecular phylogenetic assessment of small subunit ribosomal DNA showed that the species clusters together with Myxobolus portucalensis and Echinactinomyxon type 5 Özer, Wootten and Shinn, 2002, in a well-supported subclade. This is the first report of a myxosporean parasite infecting fish from the Solomon Islands.
粘孢子虫是与水产养殖和野生鱼类种群严重疾病相关的微小刺胞动物。因此，该组寄生刺胞动物值得密切关注，因为其可能对易感鱼类种群产生影响。目前，人们对感染鳗鲡的这组寄生虫知之甚少。从所罗门群岛采集的淡水鳗鲡（Anguilla marmorata）的粘孢子虫标本中，我们根据形态学、生物学特征和分子数据的综合分类分析，描述了一个属于粘体虫属的新种。此外，我们还确定了该物种在其他平孢子虫粘孢子虫中的系统发育位置和关系。小亚基核糖体 DNA 的分子系统发育评估表明，该物种与 Myxobolus portucalensis 和 Echinactinomyxon type 5 Özer、Wootten 和 Shinn, 2002 在一个支持度较高的亚分支中聚类。这是首次报道所罗门群岛鱼类感染粘孢子虫寄生虫的情况。
