Higham, JP, Heistermann, M, Agil, M, Perwitasari-Farajallah, D, Widdig, A and Engelhardt, A (2021) Female fertile phase synchrony, and male mating and reproductive skew, in the crested macaque. Scientific Reports, 11 (1). ISSN 2045-2322

Holzner, A, Ruppert, N, Swat, F, Schmidt, M, Weiß, BM, Villa, G, Mansor, A, Mohd Sah, SA, Engelhardt, A, Kühl, H and Widdig, A (2019) Macaques can contribute to greener practices in oil palm plantations when used as biological pest control. Current Biology, 29 (20). R1066-R1067. ISSN 1879-0445

Gholib, G, Heistermann, M, Agil, M, Supriatna, I, Purwantara, B, Nugraha, TP and Engelhardt, A (2018) Comparison of fecal preservation and extraction methods for steroid hormone metabolite analysis in wild crested macaques. Primates, 59 (3). pp. 281-292. ISSN 0032-8332

Engelhardt, A, Muniz, L, Perwitasari-Farajallah, D and Widdig, A (2017) Highly polymorphic microsatellite markers for the assessment of male reproductive skew and genetic variation in Critically Endangered crested macaques (Macaca nigra). International Journal of Primatology, 38 (4). pp. 672-691. ISSN 1573-8604

Duboscq, J, Neumann, C, Agil, M, Perwitasari-Farajallah, D, Thierry, B and Engelhardt, A (2017) Degrees of freedom in social bonds of crested macaque females. Animal Behaviour, 123. pp. 411-426. ISSN 0003-3472

Marty, PR, Hodges, K, Heistermann, M, Agil, M and Engelhardt, A (2017) Is social dispersal stressful? A study in male crested macaques (Macaca nigra). Hormones and Behavior, 87. pp. 62-68. ISSN 0018-506X

Engelhardt, A, Marty, PR and Hodges, JK (2016) Determinants of immigration strategies in male crested macaques (Macaca nigra). Scientific Reports, 6. ISSN 2045-2322

Kerhoas, D, Kulik, L, Perwitasari-Farajallah, D, Agil, M, Engelhardt, A and Widdig, A (2016) Mother-male bond, but not paternity, influences male-infant affiliation in wild crested macaques. Behavioral Ecology and Sociobiology. pp. 1-14. ISSN 1432-0762

Higham, JP, Kraus, C, Stahl-Hennig, C, Engelhardt, A, Fuchs, D and Heistermann, M (2015) Evaluating noninvasive markers of nonhuman primate immune activation and inflammation. American Journal of Physical Anthropology, 158 (4). pp. 673-684. ISSN 1096-8644

Danish, LM, Heistermann, M, Agil, M and Engelhardt, A (2015) Validation of a Novel Collection Device for Non-Invasive Urine Sampling from Free-Ranging Animals. PLoS One, 10 (10). pp. 1-13. ISSN 1932-6203

Adams, MJ, Majolo, B, Ostner, J, Schülke, O, De Marco, A, Thierry, B, Engelhardt, A, Widdig, A, Gerald, MS and Weiss, A (2015) Personality structure and social style in macaques. Journal of Personality and Social Psychology, 109 (2). pp. 338-353. ISSN 1939-1315

Marty, PR, Hodges, K, Agil, M and Engelhardt, A (2015) Alpha male replacements and delayed dispersal in crested macaques (Macaca nigra). American Journal of Primatology. ISSN 1098-2345

Micheletta, J, Whitehouse, J, Parr, LA, Marshman, P, Engelhardt, A and Waller, BM (2015) Familiar and unfamiliar face recognition in crested macaques (Macaca nigra). Royal Society of Open Science, 2 (5). pp. 1-14. ISSN 2054-5703

Girard-Buttoz, C, Heistermann, M, Rahmi, E, Agil, M, Ahmad Fauzan, P and Engelhardt, A (2015) Androgen correlates of male reproductive effort in wild male long-tailed macaques (Macaca fascicularis): A multi-level test of the challenge hypothesis. Physiology & Behavior, 141. pp. 143-153. ISSN 1873-507X

Kerhoas, D, Perwitasari-Farajallah, D, Agil, M, Widdig, A and Engelhardt, A (2014) Social and ecological factors influencing offspring survival in wild macaques. Behavioral Ecology, 25 (5). pp. 1164-1172. ISSN 1045-2249

Girard-Buttoz, C, Heistermann, M, Rahmi, E, Marzec, A, Agil, M, Fauzan, PA and Engelhardt, A (2014) Mate-guarding constrains feeding activity but not energetic status of wild male long-tailed macaques (Macaca fascicularis). Behavioral Ecology and Sociobiology, 68 (4). pp. 583-595. ISSN 0340-5443

Duboscq, J, Agil, M, Engelhardt, A and Thierry, B (2014) The function of postconflict interactions: new prospects from the study of a tolerant species of primate. Animal Behaviour, 87. pp. 107-120. ISSN 0003-3472

Neumann, C, Agil, M, Widdig, A and Engelhardt, A (2013) Personality of wild male crested macaques (Macaca nigra). PLoS One, 8 (8). pp. 1-10. ISSN 1932-6203

Duboscq, J, Micheletta, J, Agil, M, Hodges, K, Thierry, B and Engelhardt, A (2013) Social tolerance in wild female crested macaques (Macaca nigra) in Tangkoko-Batuangus Nature Reserve, Sulawesi, Indonesia. American Journal of Primatology, 75 (4). pp. 361-375. ISSN 1098-2345

Micheletta, J, Waller, BM, Panggur, MR, Neumann, C, Duboscq, J, Agil, M and Engelhardt, A (2012) Social bonds affect anti-predator behaviour in a tolerant species of macaque, Macaca nigra. Proceedings of the Royal Society B: Biological Sciences, 279 (1744). ISSN 1471-2954

Higham, JP, Heistermann, M, Saggau, C, Agil, M, Perwitasari-Farajallah, D and Engelhardt, A (2012) Sexual signalling in female crested macaques and the evolution of primate fertility signals. BMC Evolutionary Biology, 12 (89). pp. 1471-2148. ISSN 1471-2148

Engelhardt, A, Fischer, J, Neumann, C, Pfeifer, J-B and Heistermann, M (2012) Information content of female copulation calls in wild long-tailed macaques (Macaca fascicularis). Behavioral Ecology and Sociobiology, 66 (1). pp. 121-134. ISSN 0340-5443

Neumann, C, Duboscq, J, Dubuc, C, Ginting, A, Irwan, AM, Agil, M, Widdig, A and Engelhardt, A (2011) Assessing dominance hierarchies: validation and advantages of progressive evaluation with Elo-rating. Animal Behaviour, 82 (4). pp. 911-921. ISSN 0003-3472

Dubuc, C, Muniz, L, Heistermann, M, Engelhardt, A and Widdig, A (2011) Testing the priority-of-access model in a seasonally breeding primate species. Behavioral Ecology and Sociobiology, 65 (8). pp. 1615-1627. ISSN 0340-5443

Higham, JP, Girard-Buttoz, C, Engelhardt, A and Heistermann, M (2011) Urinary C-peptide of insulin as a non-invasive marker of nutritional status: some practicalities. PLoS One, 6 (7). 222398-e22398. ISSN 1932-6203

Girard-Buttoz, C, Higham, JP, Heistermann, M, Wedegärtner, S, Maestripieri, D and Engelhardt, A (2011) Urinary C-peptide measurement as a marker of nutritional status in macaques. PLoS One, 6 (3). pp. 1-9. ISSN 1932-6203

Neumann, C, Assahad, G, Hammerschmidt, K, Perwitasari-Farajallah, D and Engelhardt, A (2010) Loud calls in male crested macaques, Macaca nigra: a signal of dominance in a tolerant species. Animal Behaviour, 79 (1). pp. 187-193. ISSN 0003-3472

Dubuc, C, Brent, LJN, Accamando, AK, Gerald, MS, MacLarnon, A, Semple, S, Heistermann, M and Engelhardt, A (2009) Sexual Skin Color Contains Information About the Timing of the Fertile Phase in Free-ranging Macaca mulatta. International Journal of Primatology, 30 (6). pp. 777-789. ISSN 0164-0291

Brauch, K, Hodges, K, Engelhardt, A, Fuhrmann, K, Shaw, E and Heistermann, M (2008) Sex-specific reproductive behaviours and paternity in free-ranging Barbary macaques (Macaca sylvanus). Behavioral Ecology and Sociobiology, 62 (9). pp. 1453-1466. ISSN 0340-5443

Engelhardt, A, Heistermann, M, Hodges, JK, Nürnberg, P and Niemitz, C (2006) Determinants of male reproductive success in wild long-tailed macaques (Macaca fascicularis)—male monopolisation, female mate choice or post-copulatory mechanisms? Behavioral Ecology and Sociobiology, 59 (6). pp. 740-752. ISSN 0340-5443

Pradhan, GR, Engelhardt, A, van Schaik, CP and Maestripieri, D (2006) The evolution of female copulation calls in primates: a review and a new model. Behavioral Ecology and Sociobiology, 59 (3). pp. 333-343. ISSN 0340-5443

Engelhardt, A (2004) The Significance of Male and Female Reproductive Strategies for Male Reproductive Success in Wild Longtailed Macaques (Macaca Fascicularis). Cuvillier Verlag. ISBN 3865371701

Engelhardt, A, Pfeifer, J-B, Heistermann, M, Niemitz, C, van Hooff, JARAM and Hodges, JK (2004) Assessment of female reproductive status by male longtailed macaques, Macaca fascicularis, under natural conditions. Animal Behaviour, 67 (5). pp. 915-924. ISSN 0003-3472