Nasal discs have been used to identify ducks in studies of survival and reproduction. To date, there has not been a comprehensive assessment of nasal‐disc effects on the vital rates of wild ducks. We applied nasal discs to 603 juvenile and 784 adult lesser scaup (Aythya affinis) females from a population breeding in southwest Montana, USA, and released 1,399 juvenile and 71 adult females wearing only metal leg bands between June 2005 and September 2016. Using resighting, recapture, and hunter‐recovery data collected from those individuals, we estimated survival and recovery probability with multistate capture‐recapture models in Program MARK. We also assessed if recovery distance from our study site and pre‐breeding and brood‐rearing body condition were diminished for females wearing nasal discs. Model‐averaged survival probabilities were 0.231 ± 0.035 (SE) for juveniles and 0.482 ± 0.019 for adults released with nasal discs. Survival was 1.8–3.4 times higher for females released with metal leg bands when compared to those released with nasal discs; survival of these juveniles was 0.433 ± 0.049 and 0.693 ± 0.039 for adults. We did not find evidence for recovery probability or recovery distance varying between females that wore nasal discs and those that did not. During the pre‐breeding and brood‐rearing seasons, we did not find females wearing nasal discs to be in lower body condition when compared to unmarked females. Our comprehensive assessment of nasal discs on wild lesser scaup suggests that survival probabilities estimated from nasal‐marked study populations should be cautiously interpreted as minimum estimates. © 2021 The Wildlife Society.

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鼻盘和小腿S的生命率

在生存和繁殖研究中，鼻盘已被用于识别鸭子。迄今为止，尚未对鼻碟对野鸭生命率的影响进行全面评估。我们对603个少年和784个成年的小变种（Aythya affinis）应用了鼻盘）来自美国蒙大拿州西南部繁殖的种群的雌性，在2005年6月至2016年9月之间释放了仅穿着金属腿带的1,399名少年和71名成年雌性。使用从这些个体收集的观察，捕获和猎人恢复数据，我们估算了存活率程序MARK中的多状态捕获再捕获模型来确定和恢复概率。我们还评估了佩戴鼻椎间盘突出的女性是否降低了距研究地点的恢复距离以及预育和育雏的身体状况。模型的平均生存概率对于幼年者为0.231±0.035（SE），对于经鼻椎间盘释放的成年人而言为0.482±0.019。用金属腿带释放的女性的存活率是用鼻椎间盘释放的女性的存活率的1.8-3.4倍；这些少年的存活率分别为0.433±0.049和0.693±0。039成人 我们没有发现证据表明戴鼻梁的女性和未戴鼻椎间盘的女性的恢复概率或恢复距离存在差异。在繁殖前和育雏季节，与未标记的雌性相比，我们没有发现戴着鼻椎间盘的雌性处于较低的身体状态。我们对野生小斑马鼻盘的综合评估表明，应谨慎地将以鼻标为研究对象的人群估计的生存概率解释为最低估计值。©2021野生动物协会。我们对野生小斑马鼻盘的综合评估表明，应谨慎地将以鼻标为研究对象的人群估计的生存概率解释为最低估计值。©2021野生动物协会。我们对野生小斑马鼻盘的综合评估表明，应谨慎地将以鼻标为研究对象的人群估计的生存概率解释为最低估计值。©2021野生动物协会。