The Spatial Ecology and Microhabitat Selection of the Pygmy Rattlesnake (Sistrurus miliarius) in Southwestern Missouri
The Spatial Ecology and Microhabitat Selection of the Pygmy Rattlesnake (Sistrurus miliarius) in Southwestern Missouri
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密苏里州西南部侏儒响尾蛇（Sistrurus miliarius）的空间生态和微生境选择
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发表时间：
2017
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通讯作者：
Dylan W Maag
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作者：
Dylan W Maag
尽管在美国东南部广泛分布，侏儒响尾蛇（Sistrurus miliarius）受到的研究关注比许多其他响尾蛇物种少。我总共捕获了33个S。miliarius在Drury-Mincy保护区（DMCA），并保留了14个大的个人（主要是怀孕的女性）进行无线电遥测研究。蛇主要是在夜间道路驾驶调查中捕获的，很少遇到任何其他采样技术。在DMCA中，Sistrurus miliarius广泛分布于森林，稀树草原和林间空地栖息地。蛇选择的微生境，更多的植被覆盖和树冠关闭比随机网站，同时避免稀疏覆盖的地区。所有遥测监测蛇相对久坐不动，占用非常小（0-2.6公顷）的家庭范围。女性的生殖状况强烈影响活动，平均家庭范围大小的怀孕女性增加五倍分娩后。分娩发生在8月中旬，观察了几窝婴儿的产妇护理，时间长达三天。
Despite a wide distribution throughout the southeastern United States, pygmy rattlesnakes (Sistrurus miliarius) have received less research attention than many other rattlesnake species. I captured a total of 33 S. miliarius at the Drury-Mincy Conservation Area (DMCA) and retained 14 large individuals (mostly gravid females) for a radio telemetry study. Snakes were primarily captured during evening road driving surveys and were encountered rarely with any other sampling technique. Sistrurus miliarius are widespread at DMCA where they were encountered in forest, savanna, and glade habitats. Snakes selected microhabitats with more vegetative cover and tree canopy closure than random sites while avoiding areas with sparse cover. All telemetrically monitored snakes were relatively sedentary and occupied very small (0–2.6 ha) home ranges. Reproductive status of females strongly affected activity with mean home range size of gravid females increasing five-fold following parturition. Births occurred in midAugust with maternal attendance observed for several litters for up to three days.