DOI: 10.5281/zenodo.10647548
title: Monkey troop sizes

description: This dataset is a synthesis of publicised data on monkey troop sizes. It is important to monitor the biodiversity and prevalence of monkeys as many of them are ICUN redlist endangered species and are particularly affected by climate change and anthropogenic habitat degredation. Monkeys are also commonly found in urban settings and are considerably affected the spreaad of parasites and disease from scavenging. Monkey- human interactions also have potential for the spread of zoonotic diseases further stressing the need for datasets on monkey populations.

This dataset synthesised information on 30 monkey species with particular attention given to simians. Data has recorded the average observed troop size in each study as well as the number of troops. If provided, the study also recorded information on the observed numbers of males and females in each monkey troop.

The data was searched for using terms such as "monkey", "simian", "troop", "size", and "population". Papers were primarily sorted by relevance. Papers were also searched for using species names of particular monkeys which were not found in the aformentioned terms.

References

Atmoko, T., Toulec, T., Lhota, S. and Darman, 2024. Population status of proboscis monkeys in Balikpapan Bay and their potential survival challenges in Nusantara, the proposed new capital city of Indonesia. Environmental Monitoring and Assessment, 196(2), p.107.

Bezanson, M., Garber, P.A., Murphy, J.T. and Premo, L.S., 2008. Patterns of subgrouping and spatial affiliation in a community of mantled howling monkeys (Alouatta palliata). American Journal of Primatology: Official Journal of the American Society of Primatologists, 70(3), pp.282-293.

Boinski, S.U.E., Kauffman, L., Westoll, A., Stickler, C., Cropp, S. and Ehmke, E., 2003. Are vigilance, risk from avian predators and group size consequences of habitat structure? A comparison of three species of squirrel monkey (Saimiri oerstedii, S. boliviensis, and S. sciureus). Behaviour, 140(11-12), pp.1421-1467.

Borries, C., Larney, E., Lu, A., Ossi, K. and Koenig, A., 2008. Costs of group size: lower developmental and reproductive rates in larger groups of leaf monkeys. Behavioral Ecology, 19(6), pp.1186-1191.

Easton, J., Chao, N., Mulindahabi, F., Ntare, N., Rugyerinyange, L. and Ndikubwimana, I., 2011. Status and conservation of the only population of the Vulnerable owl-faced monkey Cercopithecus hamlyni in Rwanda. Oryx, 45(3), pp.435-438.

Estrada, A., Castellanos, L., Garcia, Y. et al. Survey of the black howler monkey,Alouatta pigra, population at the Mayan site of Palenque, Chiapas, Mexico. Primates 43, 51–58 (2002). https://doi.org/10.1007/BF02629576

Estrada, A., Lluecke, L., Van Belle, S., French, K., Munoz, D., Garcia, Y., Castellanos, L., Mendoza, A., 2002. THE BLACK HOWLER MONKEY (ALOUATTA PIGRA) AND SPIDER MONKEY (ATELES GEOFFROYI) IN THE MAYAN SITE OF YAXCHILÁN, CHIAPAS, MEXICO: A PRELIMINARY SURVEY. Neotropical Primates, 10(2)

Fernández, V.A., Kowalewski, M. and Zunino, G.E., 2013. Who is coordinating collective movements in black and gold howler monkeys?. Primates, 54, pp.191-199.

Helenbrook, W.D. and Valdez, J.W., 2021. Species distribution and conservation assessment of the black-headed night monkey (Aotus nigriceps): a species of Least Concern that faces widespread anthropogenic threats. Primates, 62(5), pp.817-825.

Henzi, S.P., Lycett, J.E. and Piper, S.E., 1997. Fission and troop size in a mountain baboon population. Animal behaviour, 53(3), pp.525-535.

Hsu, M.J. and Lin, J.F., 2001. Troop size and structure in free-ranging Formosan macaques (Macaca cyclopis) at Mt. Longevity, Taiwan. ZOOLOGICAL STUDIES-TAIPEI-, 40(1), pp.49-60.

Hoffman, T.S. and O'Riain, M.J., 2012. Monkey management: using spatial ecology to understand the extent and severity of human–baboon conflict in the Cape Peninsula, South Africa. Ecology and Society, 17(3).

Jayapali, U., Perera, P., Cresswell, J. and Dayawansa, N., 2023. Does anthropogenic influence on habitats alter the activity budget and home range size of toque macaques (macaca sinica)? Insight into the human-macaque conflict. Trees, Forests and People, 13, p.100412.

Yoshihiro, S., Ohtake, M., Matsubara, H., Zamma, K., Han'ya, G., Tanimura, Y., Kubota, H., Kubo, R., Arakane, T., Hirata, T. and Furukawa, M., 1999. Vertical distribution of wild Yakushima macaques (Macaca fuscata yakui) in the western area of Yakushima Island, Japan: preliminary report. Primates, 40, pp.409-415.

Wada, K., 2005. The distribution pattern of rhesus and Assamese monkeys in Nepal. Primates, 46, pp.115-119.

Ilham, K., Rizaldi, Nurdin, J. and Tsuji, Y., 2017. Status of urban populations of the long-tailed macaque (Macaca fascicularis) in West Sumatra, Indonesia. Primates, 58, pp.295-305.

Mason, B., Piel, A.K., Modrý, D., Petrželková, K.J., Stewart, F.A. and Pafčo, B., 2022. Association of human disturbance and gastrointestinal parasite infection of yellow baboons in western Tanzania. Plos one, 17(1), p.e0262481.

Oi, T., 1990. Population organization of wild pig-tailed macaques (Macaca nemestrina nemestrina) in West Sumatra. Primates, 31, pp.15-31.

Parker, L., Nijman, V. and Nekaris, K.A.I., 2008. When there is no forest left: fragmentation, local extinction, and small population sizes in the Sri Lankan western purple-faced langur. Endangered species research, 5(1), pp.29-36.

Patterson, L., Kalle, R. and Downs, C., 2018. Factors affecting presence of vervet monkey troops in a suburban matrix in KwaZulu-Natal, South Africa. Landscape and Urban Planning, 169, pp.220-228.

Smith, A.C., Kelez, S. and Buchanan-Smith, H.M., 2004. Factors affecting vigilance within wild mixed-species troops of saddleback (Saguinus fuscicollis) and moustached tamarins (S. mystax). Behavioral Ecology and Sociobiology, 56, pp.18-25.

Stone, A.I., 2007. Ecological risk aversion and foraging behaviors of juvenile squirrel monkeys (Saimiri sciureus). Ethology, 113(8), pp.782-792.

Supriatna, J., Sampurno, B.W., Sarono, S., Suwelo, I.S. and Manullang, B.O., 1986, January. THE SILVER LEAF MONKEYS (PRESBYTIS-AURATUS) ON LOMBOK-ISLAND, INDONESIA-TROOP SIZE, POPULATION-DENSITY AND DISTRIBUTION. In American Journal of Primatology (Vol. 11, No. 1, pp. 99-99). DIV JOHN WILEY & SONS INC 605 THIRD AVE, NEW YORK, NY 10158-0012: WILEY-LISS.

Wang, C.L., Wang, X.W., Zhao, H.T., Ren, Y. and Li, B.G., 2016. Population viability analysis of Sichuan snub-nosed monkeys (Rhinopithecus roxellana) in the Dapingyu region of the Qinling Mountains, China. Acta Ecol Sin, 36, pp.7724-7731.

Whitten, P.L., 1988. Effects of patch quality and feeding subgroup size on feeding success in vervet monkeys (Cercopithecus aethiops). Behaviour, 105(1-2), pp.35-52.

Zárate, D.A. and Stevenson, P.R., 2014. Behavioral ecology and interindividual distance of woolly monkeys (Lagothrix lagothricha) in a rainforest fragment in Colombia. The Woolly Monkey: Behavior, Ecology, Systematics, and Captive Research, pp.227-245.