Insect personality depends on environmental conditions
Insect personality depends on environmental conditions
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昆虫的性格取决于环境条件
DOI：
10.1093/beheco/ars175
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发表时间：
2013
影响因子：
2.4
通讯作者：
Müller C
中科院分区：
文献类型：
--
作者：
Tremmel M;Müller C
在过去的十年里，越来越多的证据表明，不同动物物种的个体在不同的环境和时间中都表现出一致的行为，也就是说，它们确实有个性。然而，很少有人知道，在多远的环境中，一个人面临的可能会影响昆虫的个性，而它是公认的，环境可以有深远的影响性能参数。人格的发展可能与对未来健康的不同期望密切相关，从而导致对比鲜明的生活史策略。我们调查了在多大程度上的环境食物条件经历了一生的生活史的影响和形状的个性的芥菜叶甲虫，Phaedon cochleariae，十字花科植物的害虫。以低质量食物饲养的甲虫比以高质量食物饲养的昆虫发育较慢，体重较低。通过在成年期重复进行类似于脊椎动物测定的行为测试，我们确定了3个人格维度，大胆，活跃和非目标探索性。比较人格维度的食物依赖性差异与预期未来前景的状态依赖性差异，我们发现，甲虫喂养低质量的食物是大胆的，从而可能增加他们的能力，成功地觅食。相比之下，喂食高质量食物的动物更活跃。大胆的变化可能是高度适应性的，以增加未来的生殖输出，而活动可能受到能量摄取的限制。我们的研究结果表明，环境不仅影响生活史特征，而且对个体的行为也有一致的影响，这可能是高度适应性的。
Increasing evidence has accumulated within the last decade that individuals of different animal species show consistent behavior both across various contexts and through time, that is, they do have personality. However, little is known in how far the environment an individual is facing may influence the personality of insects, whereas it is well established that the environment can have profound influences on performance parameters. The development of personality may be closely linked to different expectations in future fitness leading to contrasting life-history strategies. We investigated in how far the environmental food conditions experienced during lifetime influence the life-history and shape the personality of the mustard leaf beetle,Phaedon cochleariae, a pest of crucifers. Beetles reared on low-quality food developed slower and gained lower body masses than insects reared on high-quality food. By performing behavioral tests analogous to vertebrate assays repeatedly during adult life, we identified 3 personality dimensions, boldness, activity, and nontargeted explorativeness. Comparing food-dependent differences of the personality dimensions with state-dependent differences of the expected future prospects, we found that beetles feeding low-quality food were bolder, thereby potentially increasing their capabilities to succeed in foraging. In contrast, animals feeding high-quality food were more active. Changes in boldness may be highly adaptive to increase future reproductive output, whereas activity is likely constrained by the energy uptake. Our results demonstrate that the environment does not only affect life-history traits but has also a consistent impact on an individual’s behavior, which is likely highly adaptive.
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DOI：
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发表时间：
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