Unraveling behavioral and pace-of-life syndromes in a reduced parasite and predation pressure context: personality and survival of the Barbary ground squirrel
Unraveling behavioral and pace-of-life syndromes in a reduced parasite and predation pressure context: personality and survival of the Barbary ground squirrel
复制标题
在寄生虫和捕食压力减少的情况下揭示行为和生活节奏综合症：巴巴里地松鼠的个性和生存
DOI：
10.1007/s00265-018-2549-8
复制
发表时间：
2018
影响因子：
2.3
通讯作者：
J. Waterman
中科院分区：
文献类型：
--
作者：
J. Piquet;M. López;A. van der Marel;M. Nogales;J. Waterman
人格特质在行为综合征中存在重叠，这些行为综合征被认为与生理和生活史特征相关，塑造了生活节奏综合征。大胆和探索行为常常与更高的寄生虫负荷、增加的资源获取、低效的反捕食者行为以及降低的存活率（例如，因被捕食）相关。我们以富埃特文图拉岛的入侵物种——北非冠松鼠（Atlantoxerus getulus）作为寄生虫较少且捕食压力低的模型系统，探究人格如何与这些生物学特征相关。我们通过处理过程中的呼吸频率、旷场试验和逃脱试验，分别测试大胆程度、探索行为和逃脱速度的个体间差异是否存在。我们还测试了北非冠松鼠的人格特质是否相关并形成行为综合征。同时，我们探究了该物种的人格如何与体外寄生虫负荷、身体状况和存活率相关。我们发现呼吸频率、进入旷场的意愿以及逃脱速度在个体之间存在显著差异。我们在北非冠松鼠中发现了一种将进入旷场和逃脱速度联系起来的行为综合征。然而，人格与寄生虫负荷或身体状况无关，而且大胆的个体存活率更高。总体而言，我们的结果表明，富埃特文图拉岛的寄生虫和捕食者压力降低可能潜在地抵消了北非冠松鼠引入种群中快生活节奏的典型弊端。
重要声明
关于动物人格与其他生态和进化因素（如寄生虫和选择梯度）相互作用的研究，对许多生态和进化过程产生了一些有趣的观点。然而，我们对动物人格的生态进化后果以及它如何与其他相关生物学过程相互作用的理解仍然有限。入侵物种通常会经历特定的生态条件，这可以用来检验与动物人格相关的一般假设。本文探讨了在寄生虫和捕食压力降低的入侵种群背景下，人格特质是否以及如何与关键的生态和进化因素（如寄生虫和存活率）相关。与在不同生态背景下进行的其他研究不同，我们的结果表明，来自所评估种群的具有快生活节奏综合征的巴巴里地松鼠比同类具有更高的生存机会。
Personality traits overlap in behavioral syndromes that are assumed to be related to physiology and life history traits, shaping pace-of-life syndromes. Boldness and explorative behavior are frequently associated with higher parasite loads, increased resource acquisition, less efficient antipredator behavior, and reduced survival (e.g., through predation). We explored how personality is related to these biological traits using an invasive species—Atlantoxerus getulus in Fuerteventura island—as a model system with reduced parasitism and low predation pressure. We used breath rate during handling, open field tests, and escape trials to test for the existence of interindividual differences in boldness, explorative behavior, and escape speed, respectively. We also tested whether the personality traits were related and formed behavioral syndromes in A. getulus. At the same time, we explored how personality is related to ectoparasite load, body condition, and survival in the species. We found strong between-individual differences in breath rate, readiness to get in the open field arena, and escape speed. We found a behavioral syndrome, linking open field entrance and escape speed, in A. getulus. However, personality was not related to parasite load or body condition and survival was higher for bolder individuals. As a whole, our results suggest reduced parasites and predator pressures on Fuerteventura may have potentially neutralized the typical drawbacks of a fast pace-of-life in the introduced population of A. getulus.Significance statementResearch on the interactions of animal personality with other ecological and evolutionary factors, such as parasitism and selection gradients, has yielded some intriguing perspectives about many ecological and evolutionary processes. However, our understanding of the eco-evolutionary consequences of animal personality and how it interacts with other relevant biological processes is still limited. Invasive species often experience specific ecological conditions that can allow testing of the general assumptions related to animal personality. The present contribution explores if and how personality traits are related to key ecological and evolutionary factors, such as parasitism and survival, in the context of an invasive population subjected to reduced parasite and predation pressure. Unlike other studies conducted under different ecological contexts, our results suggest Barbary ground squirrels from the assessed population with fast pace-of-life syndromes have higher survival chances than their counterparts.
影响因子：
--
作者：
A. Sih;A. Bell
通讯作者：
A. Sih;A. Bell
影响因子：
6.6
作者：
Stoffel, Martin A.;Nakagawa, Shinichi;Schielzeth, Holger
通讯作者：
Schielzeth, Holger