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新疆快步麻蜥的鳞片变异与亚种分化
Scalation Variation and Subspecies Classification Status of Rapid Racerunner
汪洋1,2,周鹿1,时磊1*
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DOI:
作者单位:(1. 新疆农业大学动物科学学院,乌鲁木齐830052;2. 中国科学院动物研究所,北京100101)
中文关键字:快步麻蜥;鳞片变异;亚种
英文关键字:rapid racerunner (Eremias velox); scalation variation; subspecies
中文摘要:对采自新疆境内的塔城地区、伊犁地区、准噶尔盆地、乌鲁木齐市和吐鲁番盆地的快步麻蜥5个地理种群共287号标本进行观测,分析其鳞片变异式样,并在此基础上探讨亚种分化。根据变异率将鳞片分为三类:1)没有变异,如腹部横列鳞数;2)变异率在30%以下,包括上下唇鳞、颔片数等;3)变异率均超过30%,包括股孔数、股孔间鳞数、腹面横列鳞行数和颔片到领围鳞数等。对8个形态学量度指标及7个鳞片数量指标的差异系数进行统计分析,结果显示种群间的各指标均未达到亚种分化的差异显著性标准,暗示研究区域内的快步麻蜥在形态上没有亚种分化。结果表明快步麻蜥东方亚种的有效性有待进一步研究确定。
英文摘要:In China, the rapid racerunner (Eremias velox) is considered to be restricted to Ejinaqi, Dunhuang Basin, and north areas of Xinjiang Uygur Autonomous Region. The scalation and their morphological traits were used to quantify the morphological variation and discuss the subspecific status of rapid racerunner in Xinjiang. A total of 287 adult specimens were collected and categorized into 5 geographical populations: Qoqek, Ili, Dzungarian Basin, Urumqi and Turpan Depression. The frequency and range of head scale (supralabial, infralabial, postmental, collars) and body scale (femoral, interfemoral, ventral scales and transverse rows of ventral scales) were measured. The coefficient of variation (CV) of scales was calculated. Finally, the scales could be divided into three categories according to the CV: (1) no variation (transverse rows of ventral scales); (2) occasional variation (supralabial, infralabial and postmentals) with CV less than 30%; and (3) continuous variation (femorals, interfemorals, collars and transverse rows of ventral scales) with CV more than 30%. Coefficient of Difference (CD) among the 5 geographical populations in 8 morphological and 7 scalation traits were calculated also, however, no significant morphological differentiation supported the subspecies divergence which had been occurred in these regions. Our results suggested that more comprehensive investigation should be conducted to determine the validity of the subspecies Eremias velox roborowski.
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国内统一连续出版物号:51-1193/Q |国际标准出版物号:1000-7083
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