限制和需求相互作用,影响猎物对捕食的饮食反应

IF 4.6 1区 环境科学与生态学 Q1 ECOLOGY Functional Ecology Pub Date : 2024-08-30 DOI:10.1111/1365-2435.14647
N. D. Shamir Weller, D. Raubenheimer, D. Hawlena
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引用次数: 0

摘要

当受到捕食者威胁时,猎物会改变觅食方式。有两种相互包容的假说可以解释这种反应。第一种假说认为,为尽量减少被捕食而采取的防御行为会阻碍猎物获得它们喜欢的食物;第二种假说认为,猎物会故意改变它们的食物,以满足新的压力引起的营养需求。我们结合实地观察和实验室实验来确定哪种假设决定了蜗牛对甲虫捕食风险的饮食反应。面临捕食风险的蜗牛减少了活动,增加了攀爬,增加了呼吸,为了达到特定的营养目标而进行了独特的进食,并以营养失衡和风险升高为代价,更喜欢在笼子地板上进食。当地面上只有富含碳水化合物的食物时,受惊蜗牛的活动减少,觅食次数也减少;但当地面上只有富含蛋白质的食物时,受惊蜗牛的活动增加,碳水化合物的摄入量也高于没有风险的同种蜗牛。这一结果表明,营养物质的可获得性可能决定了哪种假设会支配猎物对捕食风险的饮食反应。在期刊博客上免费阅读本文的通俗摘要。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Constraints and demands interact to affect prey dietary reaction to predation

Read the free Plain Language Summary for this article on the Journal blog.

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来源期刊
Functional Ecology
Functional Ecology 环境科学-生态学
CiteScore
9.00
自引率
1.90%
发文量
243
审稿时长
4 months
期刊介绍: Functional Ecology publishes high-impact papers that enable a mechanistic understanding of ecological pattern and process from the organismic to the ecosystem scale. Because of the multifaceted nature of this challenge, papers can be based on a wide range of approaches. Thus, manuscripts may vary from physiological, genetics, life-history, and behavioural perspectives for organismal studies to community and biogeochemical studies when the goal is to understand ecosystem and larger scale ecological phenomena. We believe that the diverse nature of our journal is a strength, not a weakness, and we are open-minded about the variety of data, research approaches and types of studies that we publish. Certain key areas will continue to be emphasized: studies that integrate genomics with ecology, studies that examine how key aspects of physiology (e.g., stress) impact the ecology of animals and plants, or vice versa, and how evolution shapes interactions among function and ecological traits. Ecology has increasingly moved towards the realization that organismal traits and activities are vital for understanding community dynamics and ecosystem processes, particularly in response to the rapid global changes occurring in earth’s environment, and Functional Ecology aims to publish such integrative papers.
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