Lifelong consequences of early nutritional conditions on learning performance in zebra finches (Taeniopygia guttata)
Lifelong consequences of early nutritional conditions on learning performance in zebra finches (Taeniopygia guttata)
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DOI：
10.1016/j.beproc.2014.01.019
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发表时间：
2014-03-01
影响因子：
1.3
通讯作者：
Krause, E. Tobias
中科院分区：
文献类型：
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作者：
Brust, Vera;Krueger, Oliver;Krause, E. Tobias
在动物身上，早期发育条件对生理和行为特征的长期影响是常见的。然而，早期生活条件对学习技能的这种终生影响相对较少受到关注，尽管预计它们会对健康产生强烈的影响。为了测试早期环境对联想和反转学习成绩的终生影响，我们测试了斑纹雀(Taeniopygia Guttata)在出生后第一个月在低质量或高质量食物处理下饲养约五年后的反转学习任务。早期的营养治疗及其各自的生长模式显著影响了学习成绩：在生命早期接受高质量营养的斑雀在治疗期间体重增加了更多，但需要更多的试验才能将线索与奖励联系起来。治疗阶段的早期生长速度与鸟类在我们的学习任务中开始训练时对食物的识别速度以及它们的联想学习表现有关。然而，在行为灵活性任务测试的反向学习步骤中，关于早期营养治疗或相关增长率的差异并不明显。我们表明，早期生活条件直接影响我们一生中完成任务的方式和学习能力，强调早期环境对于理解成人一生的行为是多么关键。(C)2014爱思唯尔B.V.保留所有权利。
Long-term effects of early developmental conditions on physiological and behavioural traits are common in animals. Yet, such lifelong effects of early life conditions on learning skills received relatively less attention, even though they are expected to have strong fitness effects. To test the lifelong impact of the early environment on associative and reversal learning performance, we tested zebra finches (Taeniopygia guttata) in a reversal learning task about five years after they were raised either under low or high quality food treatments in their first month of life. The early nutritional treatment and its respective growth patterns significantly influenced learning performance: Zebra finches who received a high-quality nutrition early in life gained more weight during the treatment period but needed more trials to associate a cue with a reward. The early growth rate during the treatment phase was linked to how fast the birds detected the food at the onset of training in our learning task as well as to their associative learning performance. However, in the reversal learning step of the task testing for behavioural flexibility, no differences with respect to early nutritional treatments or related growth rates were apparent. We show that early life conditions directly affect the approach to our task and learning abilities over an entire lifetime, emphasizing how crucial the early environment is for understanding adult behaviour throughout life. (C) 2014 Elsevier B.V. All rights reserved.