Lemurs are the most threatened group of mammals on earth. Lemur catta (ring-tailed lemur) represents one of the most iconic lemur species and faces numerous anthropogenic threats in the wild. In this study, we present population estimates from 32 sites across the range of L. catta, collected from primary and secondary data sources, to assess the number of ring-tailed lemurs left in the wild. We estimate that there are approximately 2,220 individual L. catta remaining in the 32 sites considered. We note local extinctions of populations of L. catta in at least 12 of the 32 sites examined, and that significantly more extinctions occurred in areas without some form of protection. This decrease in extant populations could represent a decrease of more than 95% of all ring-tailed lemurs in Madagascar since the year 2000. While these results should be considered preliminary, we stress the rapid decline of the species and note that habitat loss, bushmeat hunting and the illegal pet trade are driving populations to local extinction. Based on the data presented here, urgent and immediate funding and conservation action are crucial to ensure the viability of the remaining wild populations of ring-tailed lemurs.

Keywords:
Bushmeat, Lemur catta, Ring-tailed lemur, Madagascar, Extinction, Pet trade, Population decline
1.
Andriaholinirina N, Baden A, Blanco M, Chikhi L, Cooke A, Davies N, Dolch R, Donati G, Ganzhorn J, Golden C, Groeneveld LF, Hapke A, Irwin M, Johnson S, Kappeler P, King T, Lewis R, Louis EE, Markolf M, Mass V, Mittermeier RA, Nichols R, Patel E, Rabarivola CJ, Raharivololona B, Rajaobelina S, Rakotoarisoa G, et al. (2014). Lemur catta. The IUCN Red List of Threatened Species 2014: e.T11496A62260437.
2.
Brinkmann K, Noromiarilanto F, Ratovonamana RY, Buerkert A (2014). Deforestation processes in south-western Madagascar over the past 40 years: what can we learn from settlement characteristics? Agriculture, Ecosystems & Environment 195: 231-243.
3.
Brimont L, Ezzine-de-Blas D, Karsenty A, Toulon A (2015). Achieving conservation and equity amidst extreme poverty and climate risk: the Makira REDD+ project in Madagascar. Forests 6: 748-768.
4.
Brown JL, Yoder AD (2015). Shifting ranges and conservation challenges for lemurs in the face of climate change. Ecology and Evolution 5: 1131-1142.
5.
Ceballos G, Ehrlich PR (2002). Mammal population losses and the extinction crisis. Science 296: 904-907.
6.
Clarke TA, Gray O, Gould L, Burrell AS (2015). Genetic diversity of the ring-tailed lemur (Lemur catta) in south-central Madagascar. Folia Primatologica 86: 76-84.
7.
Dimilahy L, Foulon C, Mhia P, Rahanitriniaina O, Andrianarimalala V, Fenomanana R, Randrianady J, Ratovolala M, Sehenomalala C, Walker-Bolton A, Tahirisoa R, Rafenoarisoa F, Soppelsa J, Randrianirina T, Trapon D, Ravahatramanan-Jarasoa FN (2015). Livret de recensement 2015 Lemur catta, Réserve Privée de Berenty 1936-2015. Unpublished report.
8.
Estrada A (2013). Socioeconomic context of primate conservation: population, poverty, global economic demands and sustainable land use. American Journal of Primatology 75: 30-45.
9.
Gardner CJ, Davies ZG (2014). Rural bushmeat consumption within multiple-use protected areas: qualitative evidence from southwest Madagascar. Human Ecology 42: 21-34.
10.
Gese EM (2001). Monitoring of terrestrial carnivore populations. USDA National Wildlife Research Center Publication No 576. http://digitalcommons.unl.edu/icwdm_usdanwrc/576.
11.
Gilles H, Reuter KE (2014). The presence of diurnal lemurs and human-lemur interactions within the buffer zone of the Ankarana National Park. Lemur News 18: 27-30.
12.
Goodman S (2003). Hunting of wild animals by Sakalava of the Menabe region: a field report from Kirindy-Mite. Lemur News 8: 4-6.
13.
Goodman SM, Rakotoarisoa SV, Wilmé L (2006). The distribution and biogeography of the ringtailed lemur (Lemur catta) in Madagascar. In Ringtailed Lemur Biology (Jolly A, Sussman RW, Koyama N, Rasamimanana H, eds.), pp 3-15. New York, Springer.
14.
Gould L, Andrianomena P (2015). Ring-tailed lemurs (Lemur catta), forest fragments, and community-level conservation in south-central Madagascar. Primate Conservation 29: 67-73.
15.
Gould L, Sussman RW, Sauther ML (1999). Natural disasters and primate populations: the effects of a 2-year drought on a naturally occurring population of ring-tailed lemurs (Lemur catta) in southwestern Madagascar. International Journal of Primatology 20: 69-84.
16.
Hawkins A (1999). The primates of Isalo National Park, Madagascar. Lemur News 4: 11-14.
17.
Irwin MT, Samonds KE, Raharison JL, Wright PC (2004). Lemur latrines: observations of latrine behavior in wild primates and possible ecological significance. Journal of Mammalogy 85: 420-427.
18.
Irwin MT, Johnson SE, Wright PC (2005). The state of lemur conservation in southeastern Madagascar: population and habitat assessments for diurnal and cathemeral lemurs using surveys, satellite imagery and GIS. Oryx 39: 204-218.
19.
IUCN (2016). The IUCN Red List of Threatened Species. Version 2016-1. http://www.iucnredlist.org (accessed June 30, 2016).
20.
IUCN/SSC (2013). Guidelines for Reintroductions and Other Conservation Translocations. Version 1.0. Gland, IUCN Species Survival Commission.
21.
Kelley EA (2013). The ranging behavior of Lemur catta in the region of Cap Sainte-Marie, Madagascar. American Journal of Physical Anthropology 150: 122-132.
22.
Kelley EA, Sussman RW, Muldoon KM (2007). The status of lemur species and Antserananomby: an update. Primate Conservation 11: 71-77.
23.
LaFleur M, Clarke T, Giraud L, Youssouf J, Gould L, Adiba M (2015). Reniala Lemur Rescue Center for ring-tailed lemurs in Madagascar. Lemur News 19: 11-13.
24.
Leighty KA, Valuska AJ, Grand AP, Bettinger TL, Mellen JD, Ross SR, Boyle P, Ogden JJ (2015). Impact of visual context on public perceptions of non-human primate performers. PLoS One 10: e0118487.
25.
Macdonald DW, Mace GM, Barreto GR (1999). The effects of predators on fragmented prey populations: a case study for the conservation of endangered prey. Journal of Zoology 247: 487-506.
26.
Malone M, Ramanamanjato JB, Randriatfika F, Donati G (2013). Habitat structure and grey mouse lemur (Microcebus murinus) abundance in the transitional littoral forest of Petriky, south-east Madagascar. Lemur News 17: 22-26.
27.
Moniac N, Heitmann A (2007). Lemur catta and hunting around Andohahela. Lemur News 12: 11.
28.
Naughton-Treves L, Holland MB, Brandon K (2005). The role of protected areas in conserving biodiversity and sustaining local livelihoods. Annual Review of Environment and Resources 30: 219-252.
29.
Nekaris KAI, Musing L, Vazquez AG, Donati G (2016). Is tickling torture? Assessing welfare towards slow lorises (Nycticebus spp.) within web 2.0 videos. Folia Primatologica 86: 534-551.
30.
Plumptre AJ, Cox D (2006). Counting primates for conservation: primate surveys in Uganda. Primates 47: 65-73.
31.
Pusey A, Pintea L, Wilson ML, Kamenya S, Goodall J (2007). The contribution of long-term research at Gombe National Park to chimpanzee conservation. Conservation Biology 21: 623-634.
32.
Rakotoarisoa SV (1999). Contribution à l'étude de l'adaptation de Lemur catta Linnaeus, 1758, aux zones sommitales de la Réserve Naturelle d'Andringitra. Mémoire DEA, Université d'Antananarivo.
33.
Razafindramanana J (2011). Behavioural Ecology of Sympatric Lemur Species Lemur catta and Eulemur sp. in Forest Fragments, South-Eastern Madagascar. Doctoral dissertation, Oxford Brookes University.
34.
Reuter KE, Schaefer MS (in press). Motivations for the ownership of captive lemurs in Madagascar. Anthrozoos.
35.
Reuter KE, Schaefer MS (2016). Illegal captive lemurs in Madagascar: comparing the use of online and in-person data collection methods. American Journal of Primatology DOI: 10.1002/ajp.22541.
36.
Reuter KE, Schaefer MS (2016). Captive conditions of pet lemurs in Madagascar. Folia Primatologica 87: 48-63.
37.
Reuter KE, Gilles H, Wills AR, Sewall BJ (2016). Live capture and ownership of pet lemurs in Madagascar: extent and conservation implications. Oryx 40: 344-354.
38.
Sauther ML, Sussman RW, Gould L (1999). The socioecology of the ring-tailed lemur: thirty-five years of research. Evolutionary Anthropology 8: 102-132.
39.
Schwitzer C, Mittermeier RA, Davies N, Johnson S, Ratsimbazafy J, Razafindramanana J, Louis EE Jr, Rajaobelina S (eds.) (2013). Lemurs of Madagascar: A Strategy for their Conservation 2013-2016. Bristol, IUCN SSC Primate Specialist Group, Bristol Conservation and Science Foundation, and Conservation International.
40.
Schwitzer C, Mittermeier RA, Johnson SE, Ratsimbazafy J, Razafindramanana J, Louis EE, Chikhi L, Colquhoun IC, Crick J, Dolch R, Donati G, Irwin M, LaFleur M, Nash S, Patel E, Peacock H, Randrianambinina B, Rasolofoharivelo T, Wright P (2014). Averting lemur extinctions amid Madagascar's political crisis. Science 343: 842-843.
41.
Siers RS (2007). Research experience in Vohibasia Forest, southwestern Madagaskar. Lemur News 12: 42-43.
42.
Sussman RW, Green GM, Porton I, Andrianasolondraibe OL, Ratsirarson J (2003). A survey of the habitat of Lemur catta in southwestern and southern Madagascar. Primate Conservation 19: 1631.
43.
Sussman RW, Sweeney S, Green GM, Porton I, Andrianasolondraibe OL, Ratsirarson J (2006). A preliminary estimate of Lemur catta population density using satellite imagery. In Ringtailed Lemur Biology (Jolly A, Sussman RW, Koyama N, Rasamimanana H, eds.), pp 16-31. New York, Springer.
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2017
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