鄂尔多斯丽斑麻蜥两性异形及繁殖输出  

Sexual Dimorphism and Reproductive Output of Eremias argus from Ordos

作　　者：陈绍勇[1] 毕俊怀[1] 何志超[1] 李树然[2] 刘睿[1] 汪洋[2] 赵雪[1] 

机构地区：[1]内蒙古师范大学生命科学与技术学院,呼和浩特010022 [2]中国科学院动物研究所,北京100101

出　　处：《动物学杂志》2015年第2期214-220,共7页Chinese Journal of Zoology

基　　金：内蒙古自治区"草原英才"人才工程项目

摘　　要：两性异形和雌性繁殖输出是丽斑麻蜥（Eremiasargus）种群生活史研究的重要内容。本文研究了丽斑麻蜥成体两性异形及雌性繁殖输出，研究用的95条怀卵雌体和38条（188、20早）成体于2013年6月及8月捕自内蒙古鄂尔多斯。被测形态特征有体重、头体长、头长、头高、头宽、上臂长、前臂长、腕指长、大腿长、小腿长、踝趾长、腋跨距和尾长；怀卵雌性个体在实验室条件下饲养至产卵，称量产后母体体重、卵重，记录窝卵数。丽斑麻蜥成体存在两性异形，表现为雄性个体的头部、四肢长及尾长都显著大于雌性，腋跨距显著小于雌性。本实验中最小的产卵雌体头体长为44．0mm，产卵期在6月4日至7月15日，窝卵数2～5枚，平均2,9枚，窝卵数（尸=0．043）、窝卵重（P=0．026）与头体长显著正相关，相对窝卵重（P=0．001）与头体长负相关；窝卵数（P=0．000）、卵均重（P=0．000）与窝卵重显著正相关，窝卵数与卵均重不显著负相关（P=0．200）。Sexual dimorphism and reproductive output is an important part of life history of Eremias argus. In June and August 2013,We collected 95 pregnant females and 38 （18♂, 20♀） adult E. argus from a population in Ordos of Inner Mongolia （Northern China） in order to study sexual dimorphism and female reproductive output. We examined body mass, snout-vent length, head length, head height, head width, brachium length, ante-brachium length, wrist-finger length （the length of wrist to the tip of the forth finger）, thigh length, shank length, ankle-toe length（the length of ankle to the tip of the forth toe）, abdomen length and tail length for the 18♂ and 20♀, and fed all the pregnant females in the terrarium. We kept tracking the situation of the pregnant females, and immediately weighted their body mass and eggs, recorded their clutch size after they laid eggs. The morphological data were analyzed by the one-way ANOVA and ANCOVA, and female reproductive data were treated by the regressive analysis and the partial correlative analysis. E. argus is a sexually dimorphic species, the head size, limb length and tail length are larger in males than that in females, while their abdomen lengths were shorter than that in females （Table 1）. The smallest female laid eggs was 44.0 mm snout-vent length （SVL） in our samples. The ovipositor period in our study was between 4 June and 15 July, clutch size was varied from 2 to 5 eggs （mean = 2.9, n = 93）. The female SVL was positively related to Clutch size （P = 0.043） and clutch mass （P = 0.026）, but negatively related to clutch mass （P = 0.001, Fig. 1）, clutch size （P = 0.000） and average egg weight （P = 0.000）; the clutch size was negatively related to average egg weight （P = 0.200）.

关 键 词：丽斑麻蜥 两性异形 雌性繁殖 

分 类 号：Q958[生物学—动物学]