Gillis Rick, Ballinger Royce E
Department of Biology and Microbiology, University of Wisconsin-La Crosse, 54601, La Crosse, WI, USA.
School of Biological Sciences, Universith of Nebraska-Lincoln, 68588, Lincoln, NE, USA.
Oecologia. 1992 Feb;89(2):236-243. doi: 10.1007/BF00317223.
We studied the reproductive ecology of a population of Sceloporus undulatus erythrocheilus near Walsenburg, CO during the summers of 1987-1990. Reproductive activity commences soon after emergence in early May and continues until the middle of July. Females mature in their second year following hatching at an age of 20-21 months and a size of 60-63 mm snout-vent length (SVL). Two clutches, averaging10.9 eggs, are produced per year. Larger females produce larger clutches with an increase of one egg per 3 mm SVL. Average SVL of females was 71 mm. Eggs are reasonably large (0.32 g) and relative clutch mass was the largest reported for the species (34% of body mass). A principal component analysis was used to examine relationships among reproductive characters in 12 populations of Sceloporus undulatus. The analysis suggested that patterns of reproduction in this wide-ranging species result from several factors reflecting both adaptive and phylogenetic sources of variation.
1987年至1990年夏季，我们对科罗拉多州瓦尔森堡附近的斑纹强棱蜥种群的繁殖生态学进行了研究。繁殖活动在五月初出蛰后不久就开始，一直持续到七月中旬。雌性在孵化后的第二年成熟，年龄为20至21个月，吻肛长度（SVL）为60至63毫米。每年产两窝卵，平均每窝10.9枚。体型较大的雌性产的窝卵数较多，SVL每增加3毫米，窝卵数增加一枚。雌性的平均SVL为71毫米。卵相当大（0.32克），相对窝卵质量是该物种报道中最大的（占体重的34%）。我们使用主成分分析来研究斑纹强棱蜥12个种群繁殖特征之间的关系。分析表明，这个分布广泛的物种的繁殖模式是由几个因素造成的，这些因素反映了适应性和系统发育变异的来源。
