Capture techniques to deploy radio‐collars often risk mortality and injury to the animal. Capture‐induced mortality can affect population sizes but also introduces bias in survival estimates based on data from captured animals. In recent years, a large‐scale research and monitoring project in Utah, USA, has involved capturing and radio‐collaring hundreds of mule deer (Odocoileus hemionus), a species of great interest in large parts of North America. Our objective was to investigate how the survival rates of these mule deer were affected by capture and handling. During winters of 2014–2018, an experienced capture crew net‐gunned and fitted 1,805 animals with global positioning system (GPS)‐collars. We estimated survival rates during the first 6 weeks after capture using Cox proportional hazard regression, and compared the survival rates of animals that were captured in a particular year to those of animals that were not captured but fitted with a GPS‐collar in a previous year. We used a model selection framework to evaluate how long survival rates of captured animals were different from those of animals that were not captured. Our results indicated that weekly survival rates of captured animals were 0.985 ± 0.003 (SE), 0.988 ± 0.002, and 0.990 ± 0.001 in weeks 1, 2 and 3, respectively. Weekly survival rates of captured deer during weeks 4–6 were 0.993 ± 0.001, the same as those of deer that were not captured at the same time. Furthermore, post‐capture survival rates were positively influenced by body size and negatively influenced by age. We conclude that the mortality resulting from helicopter capture was low but recommend comparing newly captured and previously captured individuals to examine what proportion of observed mortality is likely capture‐related. © 2020 The Wildlife Society.

中文翻译：

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网枪捕获对of鹿生存的影响

部署无线电项圈的捕获技术经常会给动物造成死亡和伤害的风险。捕获引起的死亡率会影响种群规模，但也会基于捕获动物的数据在生存估计中引入偏差。近年来，在美国犹他州的一个大型研究和监测项目涉及捕获和无线电对数百只m鹿（Odocoileus hemionus），这是北美大部分地区非常感兴趣的物种。我们的目的是研究捕获和处理这些m鹿的存活率如何。在2014–2018年冬季，一支经验丰富的捕捞队进行了网络射击，并为1,805只动物配备了全球定位系统（GPS）项圈。我们使用Cox比例风险回归法估算了捕获后头6周的存活率，并将在特定年份捕获的动物与未捕获但上一年装有GPS项圈的动物的生存率进行了比较。 。我们使用模型选择框架来评估捕获的动物与未捕获的动物有多长的生存率。我们的结果表明，被捕获动物的每周生存率是0.985±0.003（SE），0.988±0。在第1、2和3周分别为002和0.990±0.001。在第4-6周内，捕获的鹿的每周成活率为0.993±0.001，与未同时捕获的鹿的成活率相同。此外，捕获后的生存率受身材大小的正影响，而受年龄的影响则消极。我们得出的结论是，直升机捕获造成的死亡率较低，但建议比较新捕获的个体和先前捕获的个体，以检查观察到的死亡率中可能与捕获有关的比例。©2020野生动物协会。捕获后的存活率受身体大小的正影响，而受年龄的负面影响。我们得出的结论是，直升机捕获造成的死亡率较低，但建议比较新捕获的个体和先前捕获的个体，以检查观察到的死亡率中可能与捕获有关的比例。©2020野生动物协会。捕获后的存活率受身体大小的正影响，而受年龄的负面影响。我们得出的结论是，直升机捕获造成的死亡率较低，但建议比较新捕获的个体和先前捕获的个体，以检查观察到的死亡率中可能与捕获有关的比例。©2020野生动物协会。