Baiting for carnivores might negatively affect capture rates of prey species in camera-trap studies
Baiting for carnivores might negatively affect capture rates of prey species in camera-trap studies
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在相机陷阱研究中，针对食肉动物的诱饵可能会对猎物物种的捕获率产生负面影响
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
W. Magnusson
中科院分区：
文献类型：
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作者：
D. G. Rocha;E. Ramalho;W. Magnusson
调查和监测自然密度低、活动范围大的难以捉摸的动物，如许多中型和大型哺乳动物，是一项挑战。捕获率低可能会妨碍详细分析。在许多相机诱捕调查中，诱饵的使用被用作增加食肉动物捕获率的策略。在这里，我们测试的影响，一个食肉动物的诱饵类型（新鲜沙丁鱼和鸡蛋的混合物）的食肉动物和猎物物种的捕获率在巴西亚马逊河中部的相机陷阱调查。我们还测试，如果质量的记录，自然标记的猫科动物的个人识别是通过使用诱饵增强。我们发现，诱饵对食肉动物的捕获率没有明显的影响，但它可能会击退一些猎物物种。自然标记的猫科动物的个人身份识别的合适的照片的数量是更大的诱饵站比在unbaited站，但这并没有导致个人身份识别的实际优势。我们建议在相机陷阱研究的规划阶段应仔细考虑使用食肉动物诱饵，因为它会对猎物物种的记录产生负面影响。
Surveying and monitoring of elusive animals with naturally low densities and large home ranges, such as many medium- and large-sized mammals, is challenging. Low capture rates can preclude detailed analyses. The use of bait has been used as a strategy to increase carnivore capture rates in many camera-trap surveys. Here, we test the effect of one carnivore bait type (mix of fresh sardine and egg) on the capture rates of carnivores and prey species in a camera-trap survey in the Central Brazilian Amazon. We also test if the quality of records of naturally marked felids for individual identification is enhanced by the use of bait. We found that the bait had no apparent effect on the carnivore capture rates, but it might have repelled some prey species. The number of suitable photos for individual identification of naturally marked felids was greater at baited stations than at unbaited stations, but this did not result in practical advantages for individual identification. We recommend that the use of carnivore bait should be carefully considered at the planning stage of camera-trap studies as it can negatively affect recording of prey species.