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由于元编码的食率:捕食者在野生,多样化的猎物群体中减少了功能反应

Stella F Uiterwaal^1,2,3,4,5, John P DeLong¹

¹School of Biological Sciences, University of Nebraska-Lincoln, Lincoln, Nebraska, USA.

Ecology letters

|March 21, 2024

概括

与实验室研究相比,野生狼蜘蛛在自然界的食率较低. 这项研究引入了一种测量现场功能反应的新方法,揭示了自然生态系统中复杂的捕食者-猎物动态.

科学领域:

生态生态学生态生态学
捕食者和猎物的动力学
行为生态学行为生态学

背景情况:

功能性反应量化了捕食者食率,对生态过程至关重要.
实验室实验主导着功能反应研究,但它们在现实世界的适用性是不确定的.
多种多种的功能性反应实验具有挑战性,使得不同猎物环境中的相互作用被人们理解得很少.

研究的目的:

利用元编码数据开发一种用于估计野生掠食者食率的新方法.
为了确定野生狼蜘蛛在27个猎物家族在其自然息地中的功能反应.
将基于现场的功能反应与来自实验室的功能反应进行比较,并调查多种猎物类型的影响.

主要方法:

开发一种新的基于metabarcoding的技术,以量化捕食者的饮食和估计野生动物的食率.
应用新方法来分析野生狼蜘蛛的饮食.
基于野外数据对27个猎物家族的野狼蜘蛛食的功能反应曲线的估计.

主要成果:

野生狼蜘蛛的现场功能反应明显低于实验室实验中观察到的功能反应.
与预期相反,替代猎物的存在有时会导致食率的增加,表明复杂的生态相互作用.
这项研究为野生捕食者提供了第一个来自野外的功能反应,涉及广泛的猎物类型.

结论:

基于实验室的功能反应可能不能准确地反映自然生态系统中的食行为.
野生捕食者与猎物的相互作用可能比以前认为的要复杂得多,可能会产生多种猎物类型的非添加效应.
开发的元编码方法为研究食生态和野生捕食者的功能反应提供了强大的工具,推动了生态研究.

关键词:

DNA 可检测性半衰期食物网是一种食物网.功能反应的功能反应.时间处理时间处理互动的优势是互动的优势.超级编码元标段编码.捕食掠食掠食掠食空间清除率是什么意思狼蜘蛛是什么意思狼蜘蛛是什么意思

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