Spider webs capture environmental DNA from terrestrial vertebrates

IF 4.6 2区 综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES iScience Pub Date : 2024-01-30 DOI:10.1016/j.isci.2024.108904
Joshua P. Newton, Paul Nevill, Philip W. Bateman, Matthew A. Campbell, Morten E. Allentoft
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Abstract

Environmental DNA holds significant promise as a non-invasive tool for tracking terrestrial biodiversity. However, in non-homogenous terrestrial environments, the continual exploration of new substrates is crucial. Here we test the hypothesis that spider webs can act as passive biofilters, capturing eDNA from vertebrates present in the local environment. Using a metabarcoding approach, we detected vertebrate eDNA from all analyzed spider webs (N = 49). Spider webs obtained from an Australian woodland locality yielded vertebrate eDNA from 32 different species, including native mammals and birds. In contrast, webs from Perth Zoo, less than 50 km away, yielded eDNA from 61 different vertebrates and produced a highly distinct species composition, largely reflecting exotic species hosted in the zoo. We show that higher animal biomass and proximity to animal enclosures increased eDNA detection probability in the zoo. Our results indicate a tremendous potential for using spider webs as a cost-effective means to monitor terrestrial vertebrates.

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蜘蛛网捕捉陆生脊椎动物的环境 DNA
作为追踪陆地生物多样性的非侵入性工具,环境 DNA 前景广阔。然而,在非同质的陆地环境中,不断探索新的基质至关重要。在这里,我们验证了蜘蛛网可以作为被动生物过滤器,从当地环境中存在的脊椎动物身上捕获 eDNA 的假设。我们使用代谢条形码方法,从所有分析过的蜘蛛网(N = 49)中检测到了脊椎动物的 eDNA。从澳大利亚一处林地的蜘蛛网中发现了来自 32 个不同物种的脊椎动物 eDNA,其中包括本地哺乳动物和鸟类。相比之下,距离珀斯动物园不到 50 公里的蛛网则产生了来自 61 种不同脊椎动物的 eDNA,并产生了高度不同的物种组成,这在很大程度上反映了动物园中饲养的外来物种。我们的研究表明,动物生物量较高且靠近动物围栏会提高动物园的 eDNA 检测概率。我们的研究结果表明,将蜘蛛网作为一种经济有效的陆生脊椎动物监测手段具有巨大的潜力。
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来源期刊
iScience
iScience Multidisciplinary-Multidisciplinary
CiteScore
7.20
自引率
1.70%
发文量
1972
审稿时长
6 weeks
期刊介绍: Science has many big remaining questions. To address them, we will need to work collaboratively and across disciplines. The goal of iScience is to help fuel that type of interdisciplinary thinking. iScience is a new open-access journal from Cell Press that provides a platform for original research in the life, physical, and earth sciences. The primary criterion for publication in iScience is a significant contribution to a relevant field combined with robust results and underlying methodology. The advances appearing in iScience include both fundamental and applied investigations across this interdisciplinary range of topic areas. To support transparency in scientific investigation, we are happy to consider replication studies and papers that describe negative results. We know you want your work to be published quickly and to be widely visible within your community and beyond. With the strong international reputation of Cell Press behind it, publication in iScience will help your work garner the attention and recognition it merits. Like all Cell Press journals, iScience prioritizes rapid publication. Our editorial team pays special attention to high-quality author service and to efficient, clear-cut decisions based on the information available within the manuscript. iScience taps into the expertise across Cell Press journals and selected partners to inform our editorial decisions and help publish your science in a timely and seamless way.
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