两种蜥蜴的认知过程在早期环境条件下是稳健的。

IF 2.5 3区 环境科学与生态学 Q2 BEHAVIORAL SCIENCES
Behavioral Ecology Pub Date : 2025-05-30 eCollection Date: 2025-07-01 DOI:10.1093/beheco/araf048
Pablo Recio, Dalton C Leibold, Ondi L Crino, Kristoffer H Wild, Christopher R Friesen, Basile Mauclaire, Amelia Y Peardon, Daniel W A Noble
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引用次数: 0

摘要

动物必须通过学习来获取新的信息,以适应地调整自己的行为。然而,在大脑特别容易受到环境条件影响的早期发育阶段,学习能力可能会受到条件的限制。例如,温度可以导致变温动物生长、代谢和学习的表型可塑性调整。在脊椎动物中,热环境可以增加糖皮质激素(GCs)的产生,这是一种“压力”激素。母体的GCs可以在发育过程中遗传给后代,潜在地影响他们的学习能力。因此,预测gc和热环境对变温动物的学习发展具有交互作用。本研究以爬行动物为研究对象,研究了产前皮质酮(CORT)和孵育温度对爬行动物联想学习的影响。我们在2 × 2因子设计中控制CORT水平和温度,然后让青少年进行颜色联想学习任务。我们预测,升高的CORT和低温会损害联想学习。然而,这两个物种在独立治疗的情况下表现出相似的学习率。我们的研究结果表明,这两个物种可能已经进化出了在产前挑战的情况下保持学习表现的机制。我们还发现,在这两个物种中,颜色都会影响决策。总的来说,我们观察到对蓝色的非习得性偏好,强调需要仔细选择在涉及视觉刺激的认知测试中使用的颜色。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Cognitive processes are robust to early environmental conditions in two lizard species.

Animals must acquire new information through learning to adjust their behavior adaptively. However, learning ability can be constrained by conditions experienced during early development, when the brain is especially susceptible to environmental conditions. For example, temperature can result in phenotypically plastic adjustments to growth, metabolism, and learning in ectotherms. In vertebrates, thermal conditions can increase the production of glucocorticoid (GCs) - 'stress' hormones. Maternal GCs can be transmitted to offspring during development, potentially impacting their learning abilities. GCs and thermal environments are, therefore, predicted to have interactive effects on the development of learning in ectotherms. Here, we investigated the combined effects of prenatal corticosterone (CORT) - the main GC in reptiles-and incubation temperature on associative learning using two species of lizards, Lampropholis delicata and L. guichenoti. We manipulated CORT levels and temperature in a 2 × 2 factorial design, and then subjected juveniles to a color-associative learning task. We predicted that elevated CORT and low temperatures would impair associative learning. However, both species showed similar learning rates independently of treatment. Our results suggest that these two species may have evolved mechanisms to maintain learning performance despite prenatal challenges. We also found that color affected decision-making in both species. Overall, we observed a non-learned preference towards blue, underscoring the need to carefully select the color used in cognitive tests involving visual stimuli.

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来源期刊
Behavioral Ecology
Behavioral Ecology 环境科学-动物学
CiteScore
5.20
自引率
8.30%
发文量
93
审稿时长
3.0 months
期刊介绍: Studies on the whole range of behaving organisms, including plants, invertebrates, vertebrates, and humans, are included. Behavioral Ecology construes the field in its broadest sense to include 1) the use of ecological and evolutionary processes to explain the occurrence and adaptive significance of behavior patterns; 2) the use of behavioral processes to predict ecological patterns, and 3) empirical, comparative analyses relating behavior to the environment in which it occurs.
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