Pathology Division, Nansei Field Station, Fisheries Technology Institute, Japan Fisheries Research and Education Agency, 422-1, Nakatsuhamaura, Minami-Ise, Watarai, Mie 516-0193, Japan.
Parasitol Int. 2023 Feb;92:102677. doi: 10.1016/j.parint.2022.102677. Epub 2022 Sep 9.
The Seto Inland Sea, the largest inland sea in Japan, is a rich fishery with high biodiversity and productivity. Monogeneans have been studied for more than 120 years, and 58 nominal species have been recorded in the Seto inland Sea. This study provided DNA information on five species of Benedenia sensu lato (Capsalidae) from marine fishes from the sea, and one of them, Benedenia kobudai n. sp., is described from Semicossyphus reticulatus (Perciformes: Labridae). This new species differs from the other congeners by the hooded appearance between the anterior attachment organs, the morphology of the penis, the absence of the lobe near the vaginal pore and the common genital pore, the position of the vaginal pore, the germarium lying near the slightly hexagonal testes, the morphology of the haptor, and the shape and position of the hamuli. Phylogenetic analysis showed B. kobudai n. sp. in a separate clade from the other Benedenia species, B. epinepheli, B. hoshinai, B. sekii, and B. seriolae collected from the sea. Each of the newly provided DNA sequences (28S rDNA, ITS1-5.8S-ITS2, cox1) of the above four species are based on specimens obtained from the type hosts and/or type localities and are considered important for future taxonomic re-examination and confirmation of the reliability of the registered sequences. Furthermore, these four species are important causes of fish diseases in aquaculture, and it is expected that information on the distribution, host range, and occurrence of fish diseases for each capsalid secured by molecular identification will be accumulated. The Life Science Identifier (LSID): urn:lsid:zoobank.org:pub:26C15D17-CFD1-450D-9FCE-EFFF692D2133.
濑户内海是日本最大的内陆海，渔业资源丰富，生物多样性和生产力高。单殖吸虫的研究已有 120 多年的历史，在濑户内海记录了 58 个指名种。本研究提供了来自海洋鱼类的 5 种狭义本尼登虫（Capsalidae）的 DNA 信息，其中一种，即新本尼登虫（Benedenia kobudai n. sp.），是从半纹唇鱼（鲈形目：隆头鱼科）中描述的。这个新种与其他近缘种的区别在于前附着器官之间有帽状外观，阴茎的形态，阴道孔附近没有小叶和共同的生殖器孔，阴道孔的位置，生殖腺位于略六边形的睾丸附近，固着器的形态，以及小钩的形状和位置。系统发育分析表明，新种与其他本尼登虫，即贝氏本尼登虫（B. epinepheli）、本氏本尼登虫（B. hoshinai）、本氏本尼登虫（B. sekii）和李氏本尼登虫（B. seriolae），从海洋中采集的，在一个单独的分支中。上述四个物种的新提供的 DNA 序列（28S rDNA、ITS1-5.8S-ITS2、cox1），每一个都是基于从模式宿主和/或模式产地获得的标本，被认为对未来的分类学再检查和注册序列的可靠性确认很重要。此外，这四个物种是水产养殖中鱼类疾病的重要原因，预计通过分子鉴定获得的每个 capside 的分布、宿主范围和鱼类疾病发生的信息将被积累。生命科学标识符（LSID）：urn:lsid:zoobank.org:pub:26C15D17-CFD1-450D-9FCE-EFFF692D2133。
