Mosquera Marina, Llorente Miquel, Riba David, Estebaranz Ferrán, González-Brao Mar, Lorenzo Carlos, Sanmartí Neus, Toll Macarena, Carbonell Eudald, Feliu Olga
Grup d'Autoecologia Humana, Area de Prehistoria, Facultat de Lletres, Universitat Rovira i Virgili, Tarragona, Spain.
Laterality. 2007 Jan;12(1):19-30. doi: 10.1080/13576500600886754.
During recent years, handedness of nonhuman primates has been the subject of several studies, especially focused on our closest relatives: the chimpanzees. These studies have dealt with both wild and captive chimpanzees, and they seem to point to divergent conclusions, which have been interpreted as a by-product of the human influence in the captive samples. Here we present the results of a study of 10 chimpanzees (Pan troglodytes). In the past, they were trained in circus and marketing tasks (humanised behaviours), until they were confiscated and accepted into the Mona Foundation (in northeast Spain) in 2000, where they live in a semi-naturalistic environment. This study has been performed through observational bouts without systematic human influence, recording the actions carried out by chimpanzees when performing spontaneous activities. Our results indicate that chimpanzees that were under strong human influence in the past show the same trend in handedness as those living in freedom: few significant lateralities were observed among either individuals or tasks. So, laterality may not be influenced by humanisation. However, this conclusion must be taken as preliminary because very few individuals were studied.
近年来，非人类灵长类动物的用手习惯一直是多项研究的主题，尤其是聚焦于与我们亲缘关系最近的动物：黑猩猩。这些研究涉及野生和圈养的黑猩猩，似乎得出了不同的结论，这些结论被解释为人类对圈养样本影响的副产品。在此，我们展示了一项对10只黑猩猩（黑猩猩属）的研究结果。过去，它们接受过马戏团和商业活动训练（人类化行为），直到2000年被没收并被莫纳基金会（位于西班牙东北部）收留，在那里它们生活在半自然环境中。这项研究是在没有系统的人类影响下通过观察时段进行的，记录了黑猩猩在进行自发活动时所执行的动作。我们的结果表明，过去受到强烈人类影响的黑猩猩在用手习惯上与自由生活的黑猩猩表现出相同的趋势：在个体或任务中很少观察到明显的偏侧性。所以，偏侧性可能不受人类化影响。然而，由于研究的个体非常少，这个结论必须被视为初步结论。
