Island spotted skunks (Spilogale gracilis amphiala) are endemic to 2 of the California Channel Islands (CA, USA)—Santa Cruz and Santa Rosa. The status of skunks is uncertain, although incidental captures in traps set for island foxes (Urocyon littoralis) suggest that skunks have declined to low numbers. We superimposed wildlife cameras at fox traps in 2016 and 2017 to provide a second measure of skunk detectability. On both islands, detection rates of skunks with fox traps (0.92/100 operating nights) and with cameras (0.72/100 operating nights) did not differ during summer, indicating the 2 methods are of similar reliability for detecting skunks. In 2017, skunk detections with cameras increased from summer to early winter, suggesting monitoring in winter may improve survey efforts. Low detection rates of island spotted skunks (<1/100 operating nights) were comparable to those of other spotted skunk populations that are considered rare. © 2020 The Wildlife Society.

中文翻译：

---

岛上发现臭鼬的评估方法

岛上发现的臭鼬（Spilogale gracilis amphiala）是加利福尼亚海峡群岛（USA，CA）中的两个特有物种-圣克鲁斯和圣罗莎。臭鼬的状况尚不确定，尽管偶然捕获了为岛狐设置的陷阱（Urocyon littoralis））表明臭鼬数量已经减少到了很少。我们在2016年和2017年在狐狸诱捕器上添加了野生动物相机，以提供第二种措施来检测臭鼬。在两个岛上，在夏季，用狐狸陷阱（0.92 / 100个工作夜）和带摄像头（0.72 / 100个工作夜）的臭鼬的检出率没有差异，这表明这两种方法对臭鼬的检测具有相似的可靠性。2017年，从夏季到冬季初，使用相机进行臭鼬检测的人数有所增加，这表明冬季进行监控可能会改善调查工作。岛上发现的臭鼬检出率低（<1/100个工作夜），与其他稀有的发现点臭鼬种群的检出率相当。©2020野生动物协会。