A new sexannulate species of Orobdella (Hirudinida, Arhynchobdellida, Orobdellidae) from Yakushima Island, Japan.

A new sexannulate species of Orobdella (Hirudinida, Arhynchobdellida, Orobdellidae) from Yakushima Island, Japan.
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DOI:
10.3897/zookeys.181.2932
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发表时间:
2012
期刊:
影响因子:
1.3
通讯作者:
Nakano T
Nakano T
中科院分区:
生物学3区
文献类型:
--
作者:
Nakano T

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摘要根据在日本屋久岛采集的5个标本,描述了一新种:Orobdella mononoke sp. n., 1895。与其他雌雄同体的蠓不同的是,它具有以下特征组合:生活时背表面双色,I-XIII、XXVII和尾吸盘灰紫色,XIV-XXVI琥珀色,雄性性腺孔在XI - c11/c12,雌性性腺孔在XIII - b2,性腺孔之间8 + 1/2,管状但球茎状与嗉囊管交界处,附睾在XV-XIX,心房角卵形。利用核18S rDNA和组蛋白H3、线粒体COI、tRNACys、tRNAMet、12S rDNA、tRNAVal和16S rDNA标记进行的系统发育分析表明,Orobdella mononoke sp.与来自日本九州的2010年Orobdella esulcata Nakano以及来自日本琉球群岛的2011年Orobdella dolichopharynx Nakano和2011年Orobdella shimadae Nakano亲缘关系密切。
A new sexannulate species of the genus Orobdella Oka, 1895, Orobdella mononoke sp. n., is described on the basis of five specimens collected from Yakushima Island, Japan. Orobdella mononoke sp. n. differs from other sexannulate Orobdella species in its possessing the following combination of characters: dorsal surface bicolor in life, I–XIII, XXVII and caudal sucker grayish purple, XIV–XXVI amber, male gonopore at XI c11/c12, female gonopore at XIII b2, 8 + 1/2 between gonopores, tubular but bulbous at junction with crop gastroporal duct, epididymides in XV–XIX, and atrial cornua ovate. Phylogenetic analyses using nuclear 18S rDNA and histone H3, and mitochondrial COI, tRNACys, tRNAMet, 12S rDNA, tRNAVal and 16S rDNA markers show that Orobdella mononoke sp. n. is closely related to Orobdella esulcata Nakano, 2010 from Kyushu, Japan, and two species, Orobdella dolichopharynx Nakano, 2011 and Orobdella shimadae Nakano, 2011, from the Ryukyu Archipelago, Japan.
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