Do predators keep prey healthy or make them sicker? A meta-analysis,Ecology Letters

当前位置： X-MOL 学术 › Ecol. Lett. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Do predators keep prey healthy or make them sicker? A meta-analysis
Ecology Letters ( IF 7.6 ) Pub Date : 2021-11-05 , DOI: 10.1111/ele.13919
Robert L Richards _{1,

2} , John M Drake _{1,

2} , Vanessa O Ezenwa _{1,

2,

3}

Affiliation

Ecological theory suggests that predators can either keep prey populations healthy by reducing parasite burdens or alternatively, increase parasitism in prey. To quantify the overall magnitude and direction of the effect of predation on parasitism in prey observed in practice, we conducted a meta-analysis of 47 empirical studies. We also examined how study attributes, including parasite type and life cycle, habitat type, study design, and whether predators were able to directly consume prey contributed to variation in the predator-prey-parasite interaction. We found that the overall effect of predation on parasitism differed between parasites and parasitoids and that whether consumptive effects were present, and whether a predator was a non-host spreader of parasites, were the most important traits predicting the parasite response. Our results suggest that the mechanistic basis of predator-prey interactions strongly influences the effects of predators on parasites and that these effects, although context dependent, are predictable.

中文翻译：

掠食者是让猎物保持健康还是让它们生病？荟萃分析

生态学理论表明，捕食者可以通过减少寄生虫负担来保持猎物种群的健康，或者增加猎物的寄生性。为了量化在实践中观察到的捕食对猎物寄生影响的总体幅度和方向，我们对 47 项实证研究进行了荟萃分析。我们还检查了研究属性，包括寄生虫类型和生命周期、栖息地类型、研究设计以及捕食者是否能够直接消耗猎物，这些属性是如何导致捕食者-猎物-寄生虫相互作用的变化的。我们发现捕食对寄生的总体影响在寄生虫和类寄生蜂之间存在差异，并且是否存在消耗效应，以及捕食者是否是寄生虫的非宿主传播者，是预测寄生虫反应的最重要特征。

更新日期：2021-11-05

点击分享查看原文

点击收藏

公开下载

阅读更多本刊最新论文本刊介绍/投稿指南11