As of December 31, 2008, there were 497 golden lion tamarins living in 144 institutions around the world. All but a few animals are owned by the Brazilian Government, under the authority of the Ministry of the Environment, Chico Mendes Institute of Biodiversity Conservation (ICMBio). The management of this captive population is administered by International Studbook Keepers Jonathan Ballou and Jennifer Mickelberg and overseen by the International Committee for the Conservation and Management of Lion Tamarins, established in 1986 and chaired by representatives from ICMBio. This committee is responsible for establishing policy for both wild and captive populations of lion tamarins which includes reviewing all research proposals regarding both populations as well as reviewing applications from new institutions that wish to join the captive breeding program.
The purpose of this 2009 Population Management Plan is to conduct a review of the status and goals for the international population. This Masterplan report contains recommendations for and information on the Global population of lion tamarins and is based on the 2008 International Studbook for Golden Lion Tamarins current through December 31, 2008. The recommendations are intended to provide guidance to the population for the next two years.