Martins Waldney Pereira, Lynch Alfaro Jessica, Rylands Anthony B
Departamento de Biologia Geral, Centro de Ciências Biológicas e da Saúde, Universidade Estadual de Montes Claros, Montes Claros, Minas Gerais, Brazil.
Institute for Society and Genetics, University of California, Los Angeles, California.
Am J Primatol. 2017 Oct;79(10). doi: 10.1002/ajp.22696. Epub 2017 Sep 12.
The crested capuchin monkey (Sapajus robustus) is an endangered species endemic to the highly fragmented Atlantic Forest of Brazil. Surveys for S. robustus were carried out over a 25-month period (2003-2005) to obtain more precise geographical limits for the western range of the species. Previously published localities for S. robustus were mapped, and each point was given a 25-km radius "buffer zone." The largest forest remnants in the buffer zones (>300 ha) in Minas Gerais were visited in order to interview the local people and/or survey the forests directly using playback recordings of S. robustus. Camera traps were used in key localities if interviews suggested the presence of capuchins but no animals were sighted during the surveys. Of 127 valid interviews, only 39 people reported the presence of Sapajus in nearby forest fragments. We confirmed the presence of Sapajus in only 19 of these. S. robustus occurred in four, and S. libidinosus, S. nigritus, S. xanthosternos, or S. robustus × S. nigritus (hybrids?) occurred in the remaining 15. Based on our study, the estimated geographical distribution of S. robustus is 119,654 km , which represents a reduction of more than 70,000 km when compared to its formerly described range. The geographical limits as defined in this study are: northeast-the Jequitinhonha River; northwest and west-the Jequitinhonha River; southwest-the Suaçuí Grande River and the Espinhaço mountains; southeast-the Doce River; east-the Atlantic Ocean. A probable hybrid zone where capuchin monkeys have morphological features of both S. nigritus and S. robustus was found between the Santo Antônio and the Suaçuí Grande rivers. The elucidation of the geographical distribution of S. robustus is important for its conservation, facilitating the delineation of priority areas for the creation of reserves and the initiation of studies of the species' ecology and behavior.
冠毛卷尾猴（Sapajus robustus）是巴西高度碎片化的大西洋森林特有的濒危物种。在25个月期间（2003 - 2005年）对S. robustus进行了调查，以获取该物种西部分布范围更精确的地理界限。绘制了先前公布的S. robustus的分布地点，并给每个点划定了半径25公里的“缓冲区”。走访了米纳斯吉拉斯州缓冲区中最大的森林残余地（>300公顷），以便采访当地居民和/或使用S. robustus的回放录音直接对森林进行调查。如果采访表明存在卷尾猴，但在调查期间未见到动物，则在关键地点使用相机陷阱。在127次有效采访中，只有39人报告在附近森林碎片中有Sapajus存在。我们仅在其中19处证实了Sapajus的存在。其中4处有S. robustus，其余15处有S. libidinosus、S. nigritus、S. xanthosternos或S. robustus × S. nigritus（杂交种？）。根据我们的研究，S. robustus的估计地理分布面积为119,654平方公里，与之前描述的分布范围相比，减少了超过70,000平方公里。本研究确定的地理界限为：东北部——热基蒂尼奥尼亚河；西北部和西部——热基蒂尼奥尼亚河；西南部——苏阿苏伊格兰德河和埃斯皮尼亚苏山脉；东南部——多西河；东部——大西洋。在圣安东尼奥河和苏阿苏伊格兰德河之间发现了一个可能的杂交区，那里的卷尾猴具有S. nigritus和S. robustus的形态特征。阐明S. robustus的地理分布对其保护很重要，有助于划定建立保护区的优先区域以及启动对该物种生态和行为的研究。
