中国涡虫一新纪录科宫孔科米罗涡虫属一新种(扁形动物门,三肠目)  

A FIRST RECORDED FAMILY UTERIPORIDAE WITH A NEW SPECIES OF THE GENUS MIROPLANA (PLATYHELMINTHES,TRICLADIDA) FROM CHINA

作　　者：俞安祺[1] 汪安泰[1] 赖晓婷[1] 

机构地区：[1]深圳大学生命科学学院,深圳市海洋生物资源与生态环境重点实验室,深圳518060

出　　处：《动物分类学报》2013年第2期257-266,共10页Acta Zootaxonomica Sinica

基　　金：2012年广东省大学生创新性实验项目(1059012042);深圳大学实验室开放基金项目;2012深圳大学教学研究B类项目("专题研究型"课题)资助~~

摘　　要：三肠目Tricladida海栖亚目Maricola宫孔科Uteriporidae涡虫在中国尚无记录,其科内的米罗涡虫属Miroplana全球仅记录2种,对其生境与属征,乃存争议。本文报道米罗涡虫属1新种,深圳米罗涡虫M.shenzhensis Wanget Yu,sp.nov.。此新种生境位于广东珠江支流-东江惠州市上游江边沉水植物间,离珠江220km,江水是深圳与香港的生活供水水源。研究对采自广东多处淡水与微咸水生境的深圳米罗涡虫新种个体,进行形态学、繁殖、个体发育、食性、习性、组织学等做了较为详细的比较研究。鉴别特征:生活标本前端圆钝,尾部"V"形,眼1对,呈横向"V"形,黑色,位于头端2侧。背部有3条粗的黑色横纹。雌性同体,阴茎位于雌性生殖管左侧,其表面分布有密集的骨质三角形小刺,远端部分顺射精管内翻。游泳敏捷,喜捕猎水溞。交配后产卵1枚,1枚卵平均孵化7只幼虫。刚孵化幼体背部无横纹,之后分别增加。尾部横纹发生数天后性成熟。最后对其生境及生态学意义做了简要讨论。A new species, Miroplana shenzhensis Wang et Yu, sp. nov. of the genus Miroplana （Platyhelminthes, Tricladida, Uteriporidae） was described in this paper. Considering only 2 species of genus Miroplana were recorded in the world, there is relative controversy about the diagnostic characteristics of the genus.In this paper, we studied the morphology, generation, food habit, behavious, histology of the new species of genus Miroplana, Miroplana shenzhensis Wang and Yu sp. nov., and gave a berief discusssion of its habit and ecology significane. Material. Holotype, PLA-0060, upstream of Huizhou section ofDongjiang river（23°09′01.97″ N, 114°22′28.97″ E）, Guangdong Province, China, December, 2012. Paratypes, PLA-0061 – PLA-0068; the same date and locality as holotype. All the type specimens were collected by LU Yan-Hong （a student of Shenzhen University） and deposited in National Zoological Museum, Institute of Zoology, Chinese Academy of Sciences, Beichen West Road, Chaoyang District, Beijing 100101, China. Description （Figs 1 -21）. The body length is 1500 -2000 μm and width is 250 -350 μm, 3 black bands over the dorsal body surface.The specimens have a pair of dark black V-shape eyes located in the frontal band. The penis and the bursa canal arrange ventrally in both sides and between 2 bands in the posterior of the body. There are 2 pairs of testes. The vas deferens reaches out from interior of the frontal pair of testes, along the ventral and lateral pharynx. It finally joins with the other vas deferens of the posterior pair of testes and opens into the seminal vesicle of the basal penis. The penis located in rear of pharynx, and it is enstrophe, with sclerotic spines（subtriangular, 7 -10 μm） on the surface of whole penis. A pair of ovaries is located in the frontal pair of testes. The oviducts are located inside of the vas deferens, extending to the end of bursa canal which connects with the bursa copulatrix. In the same place there is one tubule connecting with genital atrium.

关 键 词：米罗涡虫属 新种 新纪录科 宫孔科 海栖亚目 生物学特性 

分 类 号：Q959.151[生物学—动物学]