中华沙鳅和宽体沙鳅形态差异及其物种有效性分析  

MORPHOLOGICAL VARIATION BETWEEN SINIBOTIA SUPERCILIARIS AND SINIBOTIA REEVESAE WITH NOTES ON THEIR VALIDITIES

作　　者：徐丹丹[1] 王志坚[2] 王永明[1] 彭敏锐 谢碧文[1] 何学福[2] 李斌[1] XU Dan-Dan WANG Zhi-Jian WANG Yong-Ming PENG Min-Rui XIE Bi-Wen HE Xue-Fu LI Bin(Key Laboratory of Sichuan Province for Fishes Conservation and Utilization in the Upper Reaches of the Yangtze River, Schoolof Life Sciences, Neijiang Normal University, Neijiang 641100, China Key Laboratory of Freshwater Fish Reproduction andDevelopment （Ministry of Education）, Southwest University, Chongqing 400715, China)

机构地区：[1]内江师范学院生命科学学院,内江641100 [2]西南大学淡水鱼类资源与生殖发育教育部重点实验室,重庆400715

出　　处：《水生生物学报》2017年第4期827-834,共8页Acta Hydrobiologica Sinica

基　　金：内江师范学院校级项目(15JC12);四川省教育厅重点项目(14ZA0251);四川省科技厅支撑项目(2011NZ0075)资助~~

摘　　要：通过主成分分析法并结合物种的生物学特征对长江上游支流沱江资中段69尾宽体沙鳅Sinibotia reevesae和长江干流宜宾段、南溪段及沱江资中段141尾中华沙鳅Sinibotia superciliaris的10个常规可量性状与20个框架性状进行了比较研究。结果显示:主成分分析并不能区分宽体沙鳅和中华沙鳅之间的形态差异;依据二者在尾柄高、吻须长、D1-3(胸鳍基部起点至腹鳍基部起点之间的距离)、D7-9(臀鳍基部后末端至尾鳍基部腹部起点之间的距离)和D9-10(鳍基部腹部起点至尾鳍基部背部起点之间的距离)等形态特征的显著性差异(P<0.05),并结合其繁殖生物学特征,认为中华沙鳅和宽体沙鳅应为2个有效种。建议在使用框架性状度量评价物种有效性时需选择恰当的形态指标,数据分析应结合物种的生物学特征。Sinibotia reevesae and Sinibotia superciliaris are endemic fish with similar morphology that live only in theupper reaches of the Yangtze River. The current study assessed 10 traditional morphological parameters and 20 trussnetwork features of 210 specimens from these two species using traditional taxonomy method and biological characteri-stics. 69 specimens of S. reevesae were collected from Zizhong section of the Tuojiang River, a tributary river of theYangtze River and 141 specimens of S. superciliaris were collected from Zizhong section of the Tuojiang River, Yibinand Nanxi section of the Yangtze River. PCA analysis could not distinguish morphological difference of these two spe-cies, although there were significant differences in other aspects, such as the height of caudal peduncle, the length ofrostral barbel, the distance of D1-3 （from the pectoral fin base to the origin of pelvic fin base）, D7-9 （from the end ofanal fin base to the ventral origin of caudal fin base） and D9-10 （from the ventral origin of caudal fin base to the dorsalorigin of caudal fin base）. The S. reevesae and S. superciliaris should be considered as separate species based on chara-cteristics of the reproductive biology. Appropriate evaluation criteria should be chosen to evaluate the species validi-ties while use truss network features, and the data analysis should combine with the biological characteristics of species.

关 键 词：宽体沙鳅 中华沙鳅 框架性状度量方法 形态差异 

分 类 号：Q958.8[生物学—动物学]