摘要
1996年 11月至 1997年 6月 ,于雅砻江下游干流及其支流鱼河中采获一批白鱼属Anabarilius鱼类标本 ,经鉴定为西昌白鱼 1新亚种。命名为西昌白鱼雅砻亚种Anabariliusliuiyalongensissubsp.nov.。与其它 3个亚种的主要鉴别特征是 :第 1鳃弓外侧鳃耙为 7～ 10 ,其余 3个亚种分别为 :西昌指名亚种A .liuiliui为 12～ 14,程海亚种A .liuichenghaiensis15～ 16,宜良亚种A .liuiyiliangensis 10～ 12。
WTB2] Anabarilius liui yalongensis subsp. nov. (Figs.1) Holotype, Nos. 96432, 181?mm SL, collected from Yalong River Basin in Xichang County flowing into Jinsha River (upper reaches of Yangtse River) in Dec. 1996. Paratype, 17 specimens, Nos: 96256-259, 96261, 96256, 96476-477, 96485-488, 96591, 96593-595, 97033, 97087, 97143; 85-167?mm SL, collected from the Yalong River in Xichang County and Ganyu River (a tributary of the Yalong River) in Yanbian County,Dec.1996 and June 1997. Three paratypes, 97033, 97087 and 97143 are deposited in the Kunming Institute of Zoology, Chinese Academy of Sciences. All the other specimens are deposited in the specimen room of the Institute of Rare Animals and Plants, Sichuan Normal College. D. ⅲ-6-7; P. ⅰ-15-16; V. ⅰ-7-9; A. ⅲ-12-14 (13). L. 69(12-13/4-4.5-v) 75; predorsal scales 33-35; circumpeduncular scales 22-23. Gillrakers 7-10. Pharyngeal teeth 2·4·4-5·4·2. Depth of body in standard length 3.9-4.9 (4.4), length of head 4.1-5.1 (4.7), length of peduncle 5.0-6.8 (5.3), its depth 9.9-11.2 (11.1). Length of snout in length of head 2.9-3.5 (3.2), diameter of eye 2.6-4.5 (3.7), interorbital width 2.1-2.8 (2.6). Depth of peduncle in its length 1.7-2.4 (2.0). This new subspecies differs from the nominate subspecies Anabarilius liui liui (Chang) in the combination of following characters: 1) less gill-rakers, 7-10 vs. 12-14; 2) circumpeduncular scales 22-23 vs. 20-22; 3) depth of caudal peduncle 9.9-11.2 (11.1) vs. 11.1-14.4 (12.5) in standard length; 4) eye diameter 2.6-4.5 (3.7) vs. 3.8-4.4 (4.1) in length of head; 5) interorbital width 2.1-2.8 (2.6) vs. 2.7-3.7 (3.1) in length of head. The new subspecies also differs from the other two subspecies in the above-mentioned characters.Subspecific differentiation is discussed and a key to subspecies of Anabarilius liui is provided. Key to subspecies of Anabarilius liui 1(4) Mean number of branched anal rays 13;last unbranched dorsal fin strong 2(3) Gill rakers 12-14 (Anning River, Pudu River) A. liui liui (Chang) 3(2) Gill rakers 7-10 (Yalong River) A. liui yalongensis subsp. nov. 4(1) Mean number of branched anal rays 11;last unbranched dorsal fin weak or soft 5(6) Gill rakers 10-14; scales in lateral line usually less than 70 (Nanpan River)A. liui yiliangensis He et Liu 6(5) Gill rakers 13-16; scales in lateral line usually more than 70 (Chenghai Lake)A. liui chenghaiensis He
出处
《动物分类学报》
CSCD
北大核心
2003年第2期362-366,共5页
Acta Zootaxonomica Sinica
基金
二滩水电开发有限责任公司
四川师范学院青年科学基金
云南省应用基础研究基金的资助
关键词
西昌白鱼
新亚种
亚种分化
鲤形目
鲤科
白鱼属
Cypriniformes, Cyprinidae, Anabarilius, new subspecies, sub-specific differentiation.
