Comparative studies of behavior and ecology among West-African chimpanzees.

自1976年以来，在几内亚东南部的Bossou对一群野生黑猩猩的行为和生态进行了研究，并对所有个体进行了鉴定。在那些年里，青春期的男性和女性应该已经分散了。这是与其他研究网站不同的现象。为了弄清楚这种地方差异，我们对蒙茨、宁巴和迪凯的黑猩猩相邻种群进行了初步研究。粪便和尿液样本的遗传变异正在分析中。博苏黑猩猩的特点是他们丰富的工具使用行为的变化。在Bossou发现了黑猩猩27种工具使用行为中的19种和8种工具组合使用行为中的5种。最近3年来，还发现了挖藻和使用叶垫的行为。文化行为的发展和学习以及地方差异正在研究中。

Since 1976 behavior and ecology of a group of wild chimpanzees at Bossou, south-eastern Guinea, has been studies with identification of all individuals. During those years adolescent males as well as females were supposed to have dispersed. This is different phenomenon from other research sites. For making clear this local difference adjacent populations of chimpanzees at Monts Nimba and Dieke have been preliminarily studied. Feces and urine samples are under analysis for genetic variation.Bossou chimpanzees are characterized for their rich variation of tool-using behavior. 19 out of 27 chimpanzee tool-using behaviors and 5 out of 8 tool-composite using have been found at Bossou. Even for the last 3 years algae-scooping and leaf-cushion using were newly found. Development and learning of cultural behaviors and local difference are being studied.