How will climate change affect foraging decisions and the evolution of personalities in marine predators?

气候变化将如何影响海洋捕食者的觅食决策和性格进化？

• 批准号: 2114749
• 金额: --
• 依托单位: University of Sheffield
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2018
• 资助国家: 英国
• 起止时间: 2018 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2114749
• 关键词: How; will; climate; change; affect

Background: How will animals find food as their environment changes? In marine environments, animals must search across a seemingly featureless ocean, yet successful strategies have evolved. Although recent technology has uncovered fine-details of movement paths, our ability to infer foraging strategies is under-developed. Integration between marine biology and mathematical theory is lacking. Current foraging theory assumes animals have either total (optimal foraging theory, OFT) or zero (random search theory, RST) knowledge of their environment. Yet most animals actually have partial information.Objectives: We will build models of search with partial information, based on seabird study systems with extensive pre-existing movement data. We will apply our models to these data to answer:1. Given partial information, what is the optimal foraging strategy for an individual?2. How important is information in these decisions and how do they vary with the availability of information?3. Why do different optimal foraging strategies emerge between individuals? 4. What explains these individual differences, including factors such as age, sex, and personality? 5. Which individual strategies are most likely to persist under different climate change scenarios?Ultimately, we will use our results to predict how personalities within marine communities might evolve as a result of environmental change.Novelty: (a) By pursuing the mid-point between the OFT and RST we will build a new foraging theory, better suited to real biological systems and accurate predictions. (b) We will shed light on how and why individual differences evolve and are maintained.Timeliness: Recently, there has been a rapid increase in high-resolution data on seabirds. This makes it possible to develop realistic models of foraging decisions, building on OFT and RST. Despite rapid increases in tracking data, development of models in this area has been slow and now is an ideal time to change this.

背景：随着环境的变化，动物如何寻找食物？在海洋环境中，动物必须在看似毫无特色的海洋中搜寻，但成功的策略已经进化出来。虽然最近的技术已经揭示了运动路径的细节，但我们推断觅食策略的能力还不成熟。海洋生物学和数学理论之间缺乏整合。目前的觅食理论假设动物要么完全（最优觅食理论，OFT），要么零（随机搜索理论，OFT）的环境知识。然而，大多数动物实际上有部分信息。目标：我们将建立模型的搜索与部分信息，基于海鸟研究系统与广泛的预先存在的运动数据。我们将把我们的模型应用于这些数据来回答：1。给定部分信息，个体的最优觅食策略是什么？2.信息在这些决策中有多重要，它们如何随着信息的可用性而变化？3.为什么个体之间会出现不同的最佳觅食策略？4.如何解释这些个体差异，包括年龄、性别和性格等因素？5.在不同的气候变化情景下，哪些战略最有可能持续下去？最终，我们将使用我们的研究结果来预测海洋群落中的个性如何可能演变为环境变化的结果。新奇：（a）通过追求OFT和OFT之间的中点，我们将建立一个新的觅食理论，更适合于真实的生物系统和准确的预测。(b)我们将阐明个体差异是如何以及为什么演变和维持的。时间：最近，关于海鸟的高分辨率数据迅速增加。这使得有可能开发现实的觅食决策模型，建立在OFT和OFT的基础上。尽管跟踪数据迅速增加，但这一领域的模型开发一直缓慢，现在是改变这一状况的理想时机。