Pittet Florent, Le Bot Océane, Houdelier Cécilia, Richard-Yris Marie-Annick, Lumineau Sophie
UMR CNRS 6552 «Ethologie Animale et Humaine», Université de Rennes I, Bâtiment 25, Campus de Beaulieu 263 Avenue du Général Leclerc CS74205, 35042, Rennes, Cedex, France.
Dev Psychobiol. 2014 May;56(4):622-34. doi: 10.1002/dev.21129. Epub 2013 Jun 10.
Early maternal deprivation impairs the behavioral development of young individuals. Recently, strong differences between mothered and maternally deprived chicks have been reported concerning their emotionality, sociality, and spatial skills. Here we investigated long-term and cross-generational impacts of maternal deprivation by comparing the characteristics of the non-reproductive and the maternal behavior of 22 mothered and 22 non-mothered adult female Japanese quail (Coturnix c. japonica) and by comparing the behavior of their respective fostered chicks. We reveal that non-brooded mothers were more fearful and less competent in spatial tasks and expressed impaired maternal care, characterized by more aggression towards chicks, higher activity rates, and more abnormal pacing during the first days of the care period. Chicks' behavior was clearly affected by maternal care inducing strong differences in their fearfulness and social motivation. Our results show both long-term and cross-generational impacts of early maternal deprivation in precocial birds.
早期母体剥夺会损害幼体的行为发育。最近，有报道称，由母亲抚养和未由母亲抚养的雏鸡在情绪、社交和空间技能方面存在显著差异。在此，我们通过比较22只由母亲抚养和22只未由母亲抚养的成年雌性日本鹌鹑（Coturnix c. japonica）的非繁殖行为和母性行为特征，并比较它们各自寄养雏鸡的行为，来研究母体剥夺的长期和跨代影响。我们发现，未育雏的母亲在空间任务中更恐惧、能力更差，并且表现出受损的母性关怀，其特征是在育雏期的头几天对雏鸡更具攻击性、活动率更高以及踱步行为更异常。雏鸡的行为明显受到母性关怀的影响，导致它们在恐惧和社交动机方面存在强烈差异。我们的结果显示了早成性鸟类早期母体剥夺的长期和跨代影响。
