Wangchu Leki, Narba Dobiam, Yassa Michi, Tripathi Amit
Department of Zoology, Rajiv Gandhi University, Itanagar - 791 112, Arunachal Pradesh, India.
Vet World. 2017 May;10(5):505-509. doi: 10.14202/vetworld.2017.505-509. Epub 2017 May 10.
This study was a part of an ongoing parasitological survey to investigate the health status of hill stream fish in river systems of Arunachal Pradesh - A global biodiversity hotspot.
During the 2013/2015, 18 live specimens of (Cyprinidae) were captured from the local rivers of Arunachal Pradesh and examined for parasitic monogenoids. These fish, with their flatworms, were immediately fixed in hot (60°C) 4% formalin for later examination. Identification and morphometric description used in this study followed Gussev (1976). Type specimens were deposited in the British Natural History Museum, UK.
sp. n. is described and illustrated from specimens of (Hamilton, 1822) from Arunachal Pradesh, India. The new species is characterized by a combination of the following characters: Copulatory tube coiled in 1½ counterclockwise rings, vagina consisting of a vaginal tube and vaginal pore, a complex sclerotized plate of unknown function in between male copulatory organ and vagina, and an anteromedial knob-like process on the dorsal bar.
sp. n. is the fourth species of described from the Northeast India and brings the total number of species of in Indian waters to 56. represents a new host record for spp., and possibly the first report for any parasite.
本研究是一项正在进行的寄生虫学调查的一部分，旨在调查阿鲁纳恰尔邦河流系统中山溪鱼类的健康状况，该地区是全球生物多样性热点地区。
2013年至2015年期间，从阿鲁纳恰尔邦当地河流捕获了18尾鲤科活标本，并检查其单殖吸虫寄生虫。这些带有扁虫的鱼立即用热的（60°C）4%福尔马林固定，以备后续检查。本研究中使用的鉴定和形态测量描述遵循古谢夫（1976年）的方法。模式标本保存在英国自然历史博物馆。
从印度阿鲁纳恰尔邦的汉密尔顿裂腹鱼（1822年）标本中描述并图示了新物种。新物种的特征如下：交配管逆时针盘绕1.5圈，阴道由阴道管和阴道孔组成，在雄性交配器官和阴道之间有一块功能不明的复杂硬化板，背杆上有一个前内侧瘤状突起。
新物种是从印度东北部描述的裂腹鱼属的第四个物种，使印度水域裂腹鱼属的物种总数达到56种。该新物种是裂腹鱼属物种的新宿主记录，可能也是任何寄生虫的首次报告。
