Rare nonhuman primate tool-use culture is threatened by land use changes in northeastern Brazil

This study was funded by NASA-Develop National Program granted to AP and CR. Salisbury University grant to AP. The University of Georgia grant to RS. EthoCebus research at FBV is funded by FAPESP (2011/21032-2; 2012/20107-1; 2013/192192) and CNPq (303306/2009-2) grants to PI, CAPES (017/2012; 20131537) grants to NS and MPV, FAPEMA UNIVERSAL (00613/15) to RRS.