Resende Briseida Dogo, Nagy-Reis Mariana Baldy, Lacerda Fernanda Neves, Pagnotta Murillo, Savalli Carine
Universidade de São Paulo (USP), Institute of Psychology, Av Prof Mello Moraes, 1721 Sao Paulo, SP, Brazil.
Universidade de Campinas (UNICAMP), Campinas, SP, Brazil.
Behav Processes. 2014 Nov;109 Pt A:89-94. doi: 10.1016/j.beproc.2014.09.002. Epub 2014 Sep 23.
We investigated the process of nut-cracking acquisition in a semi-free population of tufted capuchin monkeys (Sapajus sp) in São Paulo, Brazil. We analyzed the cracking episodes from monkeys of different ages and found that variability of actions related to cracking declined. Inept movements were more frequent in juveniles, which also showed an improvement on efficient striking. The most effective behavioral sequence for cracking was more frequently used by the most experienced monkeys, which also used non-optimal sequences. Variability in behavior sequences and actions may allow adaptive changes to behavior under changing environmental conditions.
我们在巴西圣保罗一个半自由放养的簇绒卷尾猴（Sapajus sp）种群中研究了坚果开裂技能的习得过程。我们分析了不同年龄猴子的开裂行为，发现与开裂相关的动作变异性下降。笨拙的动作在幼年猴子中更为频繁，它们在有效敲击方面也有所改进。经验最丰富的猴子更频繁地使用最有效的开裂行为序列，它们也会使用非最优序列。行为序列和动作的变异性可能使行为在不断变化的环境条件下发生适应性改变。
