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首页> 外文期刊>Journal of Parasitology >NEW GENUS OF BLOOD FLUKE (DIGENEA: SCHISTOSOMATOIDEA) FROM MALAYSIAN FRESHWATER TURTLES (GEOEMYDIDAE) AND ITS PHYLOGENETIC POSITION WITHIN SCHISTOSOMATOIDEA
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NEW GENUS OF BLOOD FLUKE (DIGENEA: SCHISTOSOMATOIDEA) FROM MALAYSIAN FRESHWATER TURTLES (GEOEMYDIDAE) AND ITS PHYLOGENETIC POSITION WITHIN SCHISTOSOMATOIDEA

机译：马来西亚淡水龟（geOEMYDIDAE）的新血缘蝇（Digeneea：血吸虫）及其在血吸虫内的系统发育位置

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摘要

Baracktrema obamai n. gen., n. sp. infects the lung of geoemydid turtles (black marsh turtle, Siebenrockiella crassicollis [type host] and southeast Asian box turtle, Cuora amboinensis) in the Malaysian states of Perak, Perlis, and Selangor. Baracktrema and Unicaecum Stunkard, 1925 are the only accepted turtle blood fluke genera having the combination of a single cecum, single testis, oviducal seminal receptacle, and uterine pouch. Baracktrema differs from Unicaecum by having a thread-like body approximately 30-50xlonger than wide and post-cecal terminal genitalia. Unicaecum has a body approximately 8-12xlonger than wide and terminal genitalia that are anterior to the distal end of the cecum. The new genus further differs from all other accepted turtle blood fluke genera by having a cecum that is highly convoluted for its entire length, a spindle-shaped ovary between the cirrus sac and testis, a uterine pouch that loops around the primary vitelline collecting duct, a Laurer's canal, and a dorsal common genital pore. Phylogenetic analysis of the D1-D3 domains of the nuclear large subunit ribosomal DNA (28S) revealed, with high nodal support and as predicted by morphology, that Baracktrema and Unicaecum share a recent common ancestor and form a clade sister to the freshwater turtle blood flukes of Spirorchis, paraphyletic Spirhapalum, and Vasotrema and that, collectively, these flukes were sister to all other tetrapod blood flukes (Hapalorhynchus+Griphobilharzia plus the marine turtle blood flukes and schistosomes). Pending a forthcoming emended morphological diagnosis of the family, the clade including Spirorchis spp., paraphyletic Spirhapalum, Vasotrema, Baracktrema, and Unicaecum is a likely placeholder for "Spirorchiidae Stunkard, 1921" (type genus Spirorchis MacCallum, 1918; type species Spirorchis innominatus Ward, 1921). The present study comprises the 17th blood fluke known to infect geoemydid turtles and the first proposal of a new genus of turtle blood fluke in 21 yr.
机译：Baracktrema obamai n。 gen。，n。 sp。感染马来西亚霹雳州，玻璃市和雪兰莪州的土工类海龟（黑沼泽海龟，Siebenrockiella crassicollis [类型寄主]和东南亚箱龟Cuora amboinensis）的肺部。 Baracktrema和Unicaecum Stunkard，1925年是唯一被接受的乌龟血fl属，具有单个盲肠，单个睾丸，输卵管精囊和子宫囊的组合。 Baracktrema与Unicaecum的不同之处在于，其线状体的长度比盲肠生殖器的宽度和盲肠长约30-50倍。 Unicaecum的身体比盲肠远端的宽和末端生殖器长约8-12倍。该新属与其他所有公认的乌龟血吸虫属不同，其盲肠在整个长度上高度褶皱，在卷囊和睾丸之间有纺锤形的子房，在初级卵黄液收集管周围成环的子宫袋，劳拉氏管和生殖器背侧常见毛孔。对核大亚基核糖体DNA（28S）D1-D3结构域的系统进化分析显示，在高节点支持下并且根据形态学预测，Baracktrema和Unicaecum拥有最近的共同祖先，并成为淡水乌龟血吸虫的进化枝姐妹。包括螺旋藻，寄生虫螺旋藻和Vasotrema，这些吸虫是所有其他四足动物吸虫（Hapalorhynchus + Griphobilharzia加上海龟血吸虫和血吸虫）的姐妹。在即将对这一家族进行形态学诊断之前，包括Spirorchis spp。，寄生虫的Spirhapalum，Vasotrema，Baracktrema和Unicaecum的进化枝很可能是“ Spirorchiidae Stunkard，1921”（Spirorchis MacCallum属，1918年; Spirorchis Warcalld类型的属）的占位符。 ，1921年）。本研究包括已知感染第17种血吸虫的第17次吸血uke虫和第一个提出新的乌龟吸血gen属的提议。

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