在馬達加斯加非政府組織MITSINJO與美國Henry Doorly 動物園合作，以及「瑪可瑪許生物多樣性基金會」（Margot Marsh Biodiversity Foundation）和「國際保育組織」的資助下，總算讓研究人員們找到及定位數隻罕見狐猴，並試著透過身上的無線項圈做進一步勘查。
Henry Doorly 動物園遺傳學家路易斯（Edward Louis）表示，「在人們意料之外的地方發現極為稀有大竹狐猴，要比起發現新的狐猴物種，更令人感到興奮」。
密特邁爾指出，這項發現另方面也強調出，「當地住民與舉如MITSINJO的當地組織，以及Henry Doorly 動物園等國際組織之間，相互合作保育的重要性」。
Researchers in Madagascar have confirmed the existence of a population of greater bamboo lemurs more than 400 kilometers from the only other place where the Critically Endangered species is known to live, raising hopes for its survival.
The discovery of the distinctive lemurs with jaws powerful enough to crack giant bamboo, their favorite food, occurred in 2007 in the Torotorofotsy wetlands of east central Madagascar, which is designated a Ramsar site of international importance under the Ramsar Convention on Wetlands, but was made public only today.
"The greater bamboo lemur is a unique species and the only member of an entire primate genus, making it probably the most endangered primate genus in the world, so this discovery is a real blessing for our efforts to save it from extinction," said Conservation International President Russell Mittermeier.
There are some 32 different types of lemurs in existence today, all of which are endemic to Madagascar. Lemurs are primates, an order that includes monkeys, apes and humans.
For years, scientists believed but could not prove that greater bamboo lemurs, Prolemur simus, lived in the Torotorofotsy area.
A collaborative effort between the Malagasy nongovernmental organization MITSINJO and the Henry Doorly Zoo in the United States, supported by the Margot Marsh Biodiversity Foundation and Conservation International, resulted in researchers finding and immobilizing several of the rare lemurs to attach radio collars for further monitoring.
The researchers believe there are 30 to 40 greater bamboo lemurs in the Torotorofotsy wetland, which is far to the north of the isolated pockets of bamboo forest where the other known populations of the species live.
"This finding confirmed what we knew before but couldn't prove," said Rainer Dolch of MITSINJO, which manages the Torotorofotsy site. "Our hope is that the presence of these critically threatened creatures will increase efforts to protect their habitat and keep them alive."
Habitat destruction from slash-and-burn agriculture and illegal logging threatens the previously known populations that total about 100 animals, making the existence of the newly found lemurs in a distinct region especially valuable.
"Finding the extremely rare Prolemur simus in a place where nobody expected it was probably more exciting than discovering a new lemur species," said conservation geneticist Edward Louis of Henry Doorly Zoo.
Mittermeier says the discovery shows "the importance for conservation of collaboration between local villagers, local organizations such as MITSINJO and international groups like the Henry Doorly Zoo."