Besprozvannykh V V, Atopkin D M, Ngo H D, Ermolenko A V, Van Ha N, Van Tang N, Beloded A Y
Institute of Biology and Soil Science,Far Eastern Branch of Russian Academy of Sciences,Vladivostok,Russia.
Institute of Ecology and Biodiversity,Vietnamese Academy of Sciences and Technology,Hanoi,Vietnam.
J Helminthol. 2017 May;91(3):326-331. doi: 10.1017/S0022149X16000201. Epub 2016 Apr 18.
Adult Lecithaster mugilis Yamaguti, 1970 were found in Moolgarda seheli, Valamugil engeli and Liza subviridis in the coastal waters of Cat Ba Island (Halong Bay, Vietnam). Specimens of Lecithaster sudzuhensis n. sp. were found in Mugil cephalus located in an estuary of the Kievka River in the Primorsky region of Russia. Studies have demonstrated that these species share significant morphometric similarities with each other and with specimens of L. helodes Overstreet, 1973 isolated from M. cephalus and Mugil curema from the Mississippi Sound and adjacent waters. These three species differ from one another in the size of the pharynx and ventral sucker and in the ratio of suckers, while they differ from other species in the genus by having a relatively elongated oesophagus. Molecular analysis, using the 18S rRNA and 28S rRNA genes, confirmed the validity of L. mugilis and L. sudzuhensis n. sp. and demonstrated that these species form a shared cluster with L. gibbosus (Rud, 1802).
1970年发现的成年日本勒氏吸虫（Lecithaster mugilis Yamaguti）存在于越南下龙湾吉婆岛沿海水域的穆氏鲻（Moolgarda seheli）、恩氏缟鲹（Valamugil engeli）和近缘真鲻（Liza subviridis）体内。新物种苏氏勒氏吸虫（Lecithaster sudzuhensis n. sp.）的标本在俄罗斯滨海边疆区基辅卡河河口的鲻鱼（Mugil cephalus）体内被发现。研究表明，这些物种彼此之间以及与1973年从密西西比海峡及邻近水域的鲻鱼（M. cephalus）和弯口鲻（Mugil curema）中分离出的赫氏勒氏吸虫（L. helodes Overstreet）标本在形态测量上有显著相似性。这三个物种在咽和腹吸盘的大小以及吸盘比例上彼此不同，而它们与该属的其他物种不同之处在于具有相对较长的食管。使用18S rRNA和28S rRNA基因进行的分子分析证实了日本勒氏吸虫和苏氏勒氏吸虫新物种的有效性，并表明这些物种与驼背勒氏吸虫（L. gibbosus (Rud, 1802)）形成一个共享聚类。
