Yoshida R, Hirose M, Hirose E
Department of Chemistry, Biology and Marine Science, Faculty of Science, University of the Ryukyus, Senbaru 1, Nishihara, Okinawa, Japan.
Syst Parasitol. 2013 Feb;84(2):137-47. doi: 10.1007/s11230-012-9393-4. Epub 2013 Jan 9.
A new rhizocephalan species of the genus Dipterosaccus Van Kampen & Boschma, 1925, is described from the host hermit crab Calcinus vachoni Forest on the coasts of mainland Japan and the Ryukyu Archipelago. Dipterosaccus shiinoi n. sp. differs from the previously described species, D. indicus Van Kampen & Boschma, 1925, which is redescribed, principally in the morphology of the mantle aperture and the disposition of the receptacle ducts. The distribution ranges of the two species partly overlap and they are sympatric at the same reef site near Okinawa Island. Their differentiation as two distinct species was confirmed by partial sequences of the COI gene. The monophyly of Dipterosaccus is supported by high Bayes posterior possibility and bootstrap values.
描述了来自日本本土海岸和琉球群岛的寄主寄居蟹瓦氏硬壳寄居蟹（Calcinus vachoni Forest）上的一种新的根头目物种，双囊根头目属（Dipterosaccus Van Kampen & Boschma，1925）。新种椎野双囊根头目虫（Dipterosaccus shiinoi n. sp.）与之前描述的印度双囊根头目虫（D. indicus Van Kampen & Boschma，1925）（重新描述）不同，主要在于外套膜孔的形态和贮精囊导管的排列。这两个物种的分布范围部分重叠，并且在冲绳岛附近的同一珊瑚礁地点同域分布。通过细胞色素氧化酶亚基I（COI）基因的部分序列证实了它们作为两个不同物种的分化。双囊根头目属的单系性得到了高贝叶斯后验概率和自展值的支持。
