Evidence for a by-product mutualism in a group hunter depends on prey movement state

IF 4.6 1区环境科学与生态学 Q1 ECOLOGY

Functional Ecology Pub Date : 2024-08-23 DOI:10.1111/1365-2435.14638

K. Pacher, J. Krause, P. Bartashevich, P. Romanczuk, P. Bideau, D. Pham, A. L. Burns, D. Deffner, F. Dhellemmes, B. Binder, K. M. Boswell, F. Galván-Magaña, P. Domenici, M. J. Hansen

引用次数: 0

Abstract

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群居猎人的副产品互利关系证据取决于猎物的运动状态

有研究表明，群猎动物会对猎物进行长距离追逐（千米），以提高捕获成功率，但这方面的证据仅限于少数陆生物种。这种捕食策略在大洋中可能很有效，因为在大洋中，捕食者与猎物的体型比很大，猎物的藏身之处也很少。然而，记录掠食者在公海中长距离追捕时的攻击率、捕获率和捕获成功概率仍然是一个巨大的挑战。在这里，我们结合使用水下和空中视频来评估条纹旗鱼（Kajikia audax）在群捕过程中的攻击和捕获行为，并将其与学步猎物的运动（"静止 "和 "移动 "运动状态）联系起来。我们发现，当猎物群处于 "静止 "状态时，攻击率较高，在此期间，大马林鱼个体可以对猎物群进行较长时间的连续攻击，从而在短时间内有效地垄断猎物资源。当猎物群处于 "移动 "状态时，攻击模式会发生变化，马林鱼个体会更频繁地交替攻击猎物群。捕获成功率（每次攻击捕获的可能性）不受猎物移动状态的影响。然而，对 "移动 "鱼群的攻击会导致更多的猎物从鱼群中分离出来，这些分离出来的猎物很容易被捕获--不是被攻击者捕获，而是被游到附近的同类捕获。猎物从 "移动 "鱼群中孤立出来的几率是由猎物鱼群的速度预测的，速度每增加 0.1 米，被孤立的几率就会增加 18.01%。总之，这意味着当猎物群是 "移动的 "而不是 "静止的 "时，群体捕获率最高，因为追逐 "移动的 "猎物群的捕食者有更多的孤立的、容易捕获的猎物。这一机制为选择同种群体形成的副产品互利关系提供了证据，我们将在考虑狩猎群体的社会结构和猎物类型的基础上讨论我们的发现。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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来源期刊

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.