四川裂腹鱼类一新种记述(鲤形目:鲤科)  

A New Species of the Genus Schizothorax from Sichuan,China(Cypriniformes:Cyprinidae)

作　　者：丁瑞华[1] 代元兴 黄玉勇 DING Ruihua;DAI Yuanxing;HUANG Yuyong(Sichuan Provincial Academy of Natural Resource Sciences,Chengdu 610015,China;Gulin County Bureau of Agriculture and Rural Affairs,Luzhou,Sichuan Province 646500,China;Gulin Yudong Groove Cold-Water Fish Farm,Luzhou,Sichuan Province 646507,China)

机构地区：[1]四川省自然资源科学研究院,成都610015 [2]四川省古蔺县农业农村局,四川泸州646500 [3]古蔺鱼洞沟冷水鱼养殖场,四川泸州646507

出　　处：《四川动物》2022年第3期300-303,共4页Sichuan Journal of Zoology

摘　　要：本文报道采自四川省古蔺县箭竹乡大雄村白沙河的裂腹鱼属Schizothorax一新种,命名为古蔺裂腹鱼,新种Schizothorax gulinensis sp.nov.,对新种的形态特征进行了描述,与近似种的主要性状作了比较,并附图版。This study presents a new species of the genus Schizothorax,collected from Sichuan Province,China.Schizothorax gulinensis sp.nov.(PlateⅠ:1,3,5,7:b,c)Holotype:No.SC2016003,collected on May 9,2016.Female,total length 242 mm,body length 204 mm,collected from a stream of the Baisha River(Chishui River).Allotype:No.SC2018002,collected on June 2,2018.Male,total length 248 mm,body length 206 mm,collected from the locality as the holotype.Paratypes:No.SC2018001-48,collected on June 2,2018.Total length 213-262 mm,body length 208-257 mm,collected from the locality as the holotype.Most of the specimens are kept in Sichuan Provincial Academy of Natural Resource Sciences.SC2018023-27 are kept in the Nature History Museum of Sichuan University,and SC2018030-34 are kept in the Institute of Hydrobiology,Chinese Academy of Sciences.Dorsal fin:iii-6-7(98.4%),anal fin:iii-5,pectoral fin:i-15-19,ventral fin:i-8-9.Lateral line scales:94-103.The number of scales from lateral line to the origin of dorsal fin is 25-29,and that from lateral line to the origin of pelvic fin is 19-24.Gill rakers outside the 1st arch 8-14,while the inside 13-17.Pharyngeal teeth in 3 rows,2.3.5-5.3.2 or 1.3.5-5.3.2 or 2.3.4-5.3.2.Vertebra 4+41-42+1(n=15).Body length is 4.6-5.4(4.9)times longer than body height,4.6-5.2(4.9)times longer than head length,6.1-9.1(6.1)times longer than the length of caudal peduncle,and 8.5-11.9(10.4)times longer than the depth of caudal peduncle.Head length is 2.4-2.9(2.7)times longer than snout length,4.7-5.7(4.5)times longer than eye diameter,2.6-2.9(2.9)times longer than interorbital width,5.4-7.0(6.5)times longer than the length of maxillary barbel,and 4.2-5.1(5.1)times longer than the length of rostral barbel.Length of caudal peduncle is 1.2-2.2(1.6)times longer than its height.Diagnosis:new species resembles S.grahami,but there are some morphological differences between them.

关 键 词：鲤形目 鲤科 裂腹鱼属 新种 四川 

分 类 号：Q959.4[生物学—动物学]