差异化迁移的根本原因:假设、假说和预测。

IF 11 1区 生物学 Q1 BIOLOGY Biological Reviews Pub Date : 2024-11-10 DOI:10.1111/brv.13160
Neil Paprocki, Courtney J Conway
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引用次数: 0

摘要

长期以来,鸟类迁徙决策的机制一直吸引着生态学家,并引发了大量争论。确定导致迁徙距离变化的因素(也称为差异化迁徙)一直是理解一般迁徙行为机制的流行方法。然而,由于对一小部分历史上根深蒂固的假说之间重叠、非机制性和循环预测的不断检验,研究进展一直缓慢。我们重点讨论了体型假说,并指出由于体型与迁徙距离之间的关系是由几个机制截然不同的假说预测的,因此通常测试的预测结果阻碍了研究的进展。大多数假说都没有充分考虑到迁徙本身的成本,我们提出了两种飞行效率假说,它们都具有时间和能量最小化机制,使个体能够减轻长途迁徙的固有风险。我们还根据距离最小化和食物最大化这两种不同的基本机制,提出了社会优势假说的两个概念版本,这将有助于澄清竞争在驱动迁徙决策中的作用。总之,我们描述并完善了 12 个用于解释差异化迁徙的机制假说(以及其他几个特例假说),其中七个假说的基本机制与食物限制有关,因为过去的研究发现这是差异化迁徙的一个重要驱动因素。我们还全面审查了 145 篇文献,以评估鸟类差异化迁徙替代假说的 10 个关键假设的支持度。我们的审查结果表明,在差异化迁徙背景下明确评估假设的研究少得令人吃惊。对替代假说的机制进行有力的预测和关键假设的测试,将提高我们区分这些差异化迁徙解释的能力。此外,如果研究人员继续关注种内而不是种间迁移距离的变化机制,那么未来种内研究的进展将是最大的,因为以往的研究发现不同的机制是造成种间迁移差异的原因。就物种间而言,通过全面的比较分析来解释物种间迁徙距离的变化,将拓宽我们对当前不同迁徙模式的调节机制以及导致迁徙进化的一般机制的理解。总之,我们提供了一个框架,结合动物追踪和其他技术的进步,可用于加深我们对不同迁徙距离的原因以及更普遍的迁徙决定的理解。
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The underlying causes of differential migration: assumptions, hypotheses, and predictions.

Mechanisms governing the migratory decisions of birds have long fascinated ecologists and sparked considerable debate. Identifying factors responsible for variation in migration distance, also known as differential migration, has been a popular approach to understanding the mechanisms underlying migratory behaviour more generally. However, research progress has been slowed by the continued testing of overlapping, non-mechanistic, and circular predictions among a small set of historically entrenched hypotheses. We highlight the body size hypothesis and suggest that the predictions commonly tested have impeded progress because body size relationships with migration distance are predictions made by several distinct hypotheses with contrasting mechanisms. The cost of migration itself has not been adequately accounted for in most hypotheses, and we propose two flight efficiency hypotheses with time- and energy-minimizing mechanisms that allow individuals to mitigate the risks inherent to longer migrations. We also advance two conceptual versions of the social dominance hypothesis based on two distinct underlying mechanisms related to distance minimization and food maximization that will help clarify the role of competition in driving migratory decisions. Overall, we describe and refine 12 mechanistic hypotheses proposed to explain differential migration (along with several other special-case hypotheses), seven of which have underlying mechanisms related to food limitation as past research has identified this to be an important driver of differential migration. We also thoroughly reviewed 145 publications to assess the amount of support for 10 critical assumptions underlying alternative hypotheses for differential migration in birds. Our review reveals that surprisingly few studies explicitly evaluate assumptions within a differential migration context. Generating and testing strong predictions and critical assumptions underlying mechanisms of alternative hypotheses will improve our ability to differentiate among these explanations of differential migration. Additionally, future intraspecific progress will be greatest if investigators continue to focus on mechanisms underlying variation in migration distance within rather than among demographic classes, as previous research has found differing mechanisms to be responsible for differential migration among demographic classes. Interspecifically, a thorough comparative analysis that seeks to explain variation in migration distance among species would broaden both our understanding of the mechanisms regulating current differential migration patterns and those that led to the evolution of migration more generally. Collectively, we provide a framework that, together with advances in animal-borne tracking and other technology, can be used to advance our understanding of the causes of differential migration distance, and migratory decisions more generally.

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来源期刊
Biological Reviews
Biological Reviews 生物-生物学
CiteScore
21.30
自引率
2.00%
发文量
99
审稿时长
6-12 weeks
期刊介绍: Biological Reviews is a scientific journal that covers a wide range of topics in the biological sciences. It publishes several review articles per issue, which are aimed at both non-specialist biologists and researchers in the field. The articles are scholarly and include extensive bibliographies. Authors are instructed to be aware of the diverse readership and write their articles accordingly. The reviews in Biological Reviews serve as comprehensive introductions to specific fields, presenting the current state of the art and highlighting gaps in knowledge. Each article can be up to 20,000 words long and includes an abstract, a thorough introduction, and a statement of conclusions. The journal focuses on publishing synthetic reviews, which are based on existing literature and address important biological questions. These reviews are interesting to a broad readership and are timely, often related to fast-moving fields or new discoveries. A key aspect of a synthetic review is that it goes beyond simply compiling information and instead analyzes the collected data to create a new theoretical or conceptual framework that can significantly impact the field. Biological Reviews is abstracted and indexed in various databases, including Abstracts on Hygiene & Communicable Diseases, Academic Search, AgBiotech News & Information, AgBiotechNet, AGRICOLA Database, GeoRef, Global Health, SCOPUS, Weed Abstracts, and Reaction Citation Index, among others.
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