西藏鮡科鱼类一新纪录种——无斑褶鮡  被引量:7

A New Record of Sisoridae in Tibet:Pseudecheneis immaculatus Chu

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作  者:李斌[1] 岳兴建[1] 王志坚[1] 

机构地区:[1]西南大学生命科学学院水产科学重庆市市级重点实验室,重庆400715

出  处:《重庆师范大学学报(自然科学版)》2010年第2期18-19,F0002,共3页Journal of Chongqing Normal University:Natural Science

基  金:国家环保部怒江水生生物调查项目(2007)

摘  要:2008年8月在西藏境内进行的鱼类资源调查中,在西藏芒康县曲孜卡乡采集到3尾鮡科褶鮡属鱼,经鉴定,均为无斑褶鮡(Pseudecheneis immaculatus Chu)。无斑褶鮡在分类上隶属于硬骨鱼纲、鲇形目、鮡科、褶鮡属,其主要形态特征为:胸部平坦,有一呈卵圆形的吸着器;眼小,位于头顶;口小,下位,周围密布乳头突,唇后沟不通;须4对,颌须发达,向后伸达鳃孔;胸吸着器横褶15~16条,尾鳍深分叉,下叶略长;体色均一,如同红泥水色,无黄色斑块。目前所采集到的3尾标本均保存于西南大学生命科学学院。无斑褶鮡此前仅在云南的白济汛和属于澜沧江水系的溜洞江有分布记载,西藏境内尚无其分布的文献记载;本次调查首次在西藏境内发现了无斑褶鮡的存在,为西藏境内的新纪录。In a fish resources survey carried out in Tibet, in August 2008, three fish of Pseudecheneis in Sisoridae family, harvested in Quzika Township, Mangkang County of Tibet, were all classified to be Pseudecheneis immaculatus Chu. In the taxonomy, P. immaculatus was classified into Osteichtbyes, Siluriformes, Sisoridae, Pseudecheneis and it possesses the main morphological features as follows: flat-chested, with an oval sorption device; small eyes located on top of the head; small mouth located lower position, and surrounded by clouds of nipple protrusion with discontinuous lip sulcus; with four pairs of developed jaw ,palps stretching back over the gill holes; horizontal fold of chest sorption device was 15 - 16, caudal fin was deeply forked, with a slightly longer lower lobe than the upper one; body color was uniform, which like the red mud water color, and without yellow plaque. Now, all 3 specimens harvested are deposited at the School of Life Science, Southwest University. Currently, P. immaculatus was only recorded in the Yunnan Baijixun part and the Liudong Jiang belong to Lancang River and no document on P. immaculatus. In Tibet it have been found by now. In this survey, P. immaculatus was first discovered and it created a new record in Tibet.

关 键 词:无斑褶鮡 鮡科 新纪录种 西藏 

分 类 号:Q959.468[生物学—动物学]

 

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