Tanvir Ahmed
Research
PhD Project (2023-present):
Population Genetics, hybridization and Climate Change Vulnerability of Threatened Langurs in Bangladesh.
Short Profile
Tanvir Ahmed is a passionate primatologist from Bangladesh and a PhD student at the Primate Genetics Laboratory of the German Primate Center- Leibniz Institute for Primate Research, Germany under a prestigious doctoral scholarship from the German Academic Exchange Service (DAAD). He is affiliated with the faculty of Biology and Psychology at the Georg-August-Universität Göttingen, Germany. His PhD research focuses on the population genetics, hybridization and climate change vulnerability of threatened langurs in Bangladesh.
Since 2015, Tanvir has been studying the behavior, ecology, systematics, and conservation science of threatened non-human primates in Bangladesh. His recent research on the mixed-species group formation and hybridization between Endangered Phayre’s langurs (Trachypithecus phayrei) and capped langurs (T. pileatus) are remarkable.
In 2020, Tanvir with 28 scientists described a new species of primate named Popa Langur (T. popa) from Myanmar. He has published 28 peer-reviewed articles, two book chapters, and many technical reports collaborating with over 200 scientists in about 60 countries.
Tanvir serves as a member of the IUCN SSC Primate Specialist Group, and the editorial assistant of the Asian Primates Journal.
Publications
2025
33. Ahmed, T., Hasan, S., Nath, S., Biswas, S., Mithu, A.I., Debbarma, H., Debbarma, R., Alom, K., Sattar, A., Akhter, T., Bari, M., Siddik, A.B., Muzaffar, S.B., Zinner, D., Roos, C. 2025. Mixed-species groups and genetically confirmed hybridization between sympatric Phayre’s langur(Trachypithecus phayrei) and capped langur (T. pileatus) in northeast Bangladesh. International Journal of Primatology 46: 210–228. doi.org/10.1007/s10764-024-00459-x
32. Hasan, S., Naher, H., Akhter, T., Ahmed, T., Al-Razi, H., Rahman, H.A., Muzaffar, S.B. 2025. Impact of Seasonality on Food Selection and Home Range Size of the Western Hoolock Gibbon (Hoolock hoolock). International Journal of Primatology 46: 69–95. doi.org/10.1007/s10764-024-00452-4
2024
31. Hasan, S., Hasan, MAU, Nath, S., Akhter, T., Ahmed, MT, Tasnim, M., Neha, SA, Ahmed, T. 2024. Observations on the mating behavior of capped langurs Trachypithecus pileatus in Bangladesh. Asian Primates Journal, 11(1): 24–29.
30. Liston, A.L.K., Zhu, X., Bang, T.V., Phiapalath, P., Ahmed, T., Hasan, S., Biswas, S., Nath, S., Ahmed, T., Ilham, K., Lwin, N., Frechette, J.L., Hon, N., Agger, C., Ai, S., Auda, E., Gazagne, E., Kamler, J.F., Groenenberg, M., Banet-Eugene, S., Challis, N., Leroux, N., Sinovas, P., Muñoz, V.H., Lappan, S., Zainol, Z., Albanese, V., Alexiadou, A., Nielsen, D.R.K., Holzner, A., Ruppert, N., Briefer, EF., Fuentes, A., Hansen, M.F. 2024. A model for the noninvasive, habitat-inclusive estimation of upper limit abundance for synanthropes, exemplified by M. fascicularis. Science Advances, 10(21), eadn5390. doi.org/10.1126/sciadv.adn5390
29. Eppley, T. M., Reuter, K. E., Sefczek, T. M., Tinsman, J., Santini, L., Hoeks, S., Andriantsaralaza, S., Shanee, S., Fiore, A. D., Setchell, J. M., Strier, K. B., Abanyam, P. A., Mutalib, A. H. B., Abwe, E., Ahmed, T., Ancrenaz, M., Andriantsimanarilafy, R. R., Ang, A., Aureli, F., Barrett, L., Beehner, J. C., Benítez, M. E., Bezerra, B. M., Bicca-Marques, J. C., Bikaba, D., Bitariho, R., Boesch, C., Bolt, L. M., Boonratana, R., Butynski, T. M., Canale, G. R., Carvalho, S., Chapman, C. A., Chetry, D., Cheyne, S. M., Cords, M., Cornejo, F. M., Cortés-Ortiz, L., Coudrat, C. N. Z., Crofoot, M. C., Cronin, D. T., Dadjo, A., Dakpogan, S. C., Danquah, E., Davenport, T. R. B., de Jong, Y. A., de la Torre, S., Dempsey, A., Dimalibot, J. C., Dolch, R., Donati, G., Estrada, A., Farassi, R. A., Fashing, P. J., Fernandez-Duque, E., da Silva, M. J. F., Fischer, J., Flores-Negrón, C. F., Fruth, B., Neba, T. F., Gamalo, L. E., Ganzhorn, J. U., Garber, P. A., Gnanaolivu, S. D., Gonder, M. K., Bi, S. E. G., Goossens, B., Gordo, M., Guayasamin, J. M., Guzmán-Caro, D. C., Halloran, A. R., Hartel, J. A., Heymann, E. W., Hill, R. A., Hockings, K. J., Hohmann, G., Hon, N., Houngbédji, M. G., Huffman, M. A., Ikemeh, R. A., Imong, I., Irwin, M. T., Izar, P., Jerusalinsky, L., Kalema-Zikusoka, G., Kaplin, B. A., Kappeler, P. M., Kivai, S. M., Knott, C. D., Kolasartsanee, I., Koops, K., Kowalewski, M. M., Kujirakwinja, D., Kumar, A., Le, Q. K., Lewis, R. J., Lin, A. K., Link, A., Loría, L. I., Lormie, M. M., Louis Jr., E. E., Lwin, N., Maisels, F., Malaivijitnond, S., Marisa, L., McCabe, G. M., McGraw, W. S., Mekonnen, A., Méndez-Carvajal, P. G., Minhós, T., Montgomery, D. M., Morelos-Juárez, C., Morgan, B. J., Morgan, D., Etingüe, A. M., Ndiaye, P. I., Nekaris, K. A., Nguyen, N., Nijman, V., Nishuli, R., Norconk, M. A., Oklander, L. I., Oktaviani, R., Ostner, J., Otali, E., Perry, S. E., Ramos, E. J. P., Porter, L. M., Pruetz, J. D., Pusey, A. E., Queiroz, H. L., Ramírez, M. A., Randriatahina, G. H., Rasoanaivo, H., Ratsimbazafy, J., Ratsirarson, J., Razafindramanana, J., Razafindratsima, O. H., Reynolds, V., Rizaldi, R., Robbins, M. M., Rodríguez, M. E., Rosales-Meda, M., Sanz, C. M., Sarkar, D., Savage, A., Schreier, A. L., Schülke, O., Segniagbeto, G. H., Serio-Silva, J. C., Setiawan, A., Seyjagat, J., Silva, F. E., Sinclair, E. M., Smith, R. L., Spaan, D., Stewart, F. A., Strum, S. C., Surbeck, M., Svensson, M. S., Talebi, M., Tédonzong, L. R., Urbani, B., Valsecchi, J., Vasey, N., Vogel, E. R., Wallace, R. B., Wallis, J., Waters, S., Wittig, R. M., Wrangham, R. W., Wright, P. C., Mittermeier, R. A. 2024. Tropical field stations yield high conservation return on investment. Conservation Letters, e13007. doi.org/10.1111/conl.13007
2023
28. Ahmed, T., S. Hasan, S. Nath, S. Biswas. 2023. DIMINISHING SPECTACLES: ADDRESSING THE GLOBAL DECLINE OF ENDANGERED PHAYRE’S LANGURS. Cheetal. 60(2): 5–15.
27. Gamalo, L. E., Ilham, K., Jones-Engel, L., Gill, M., Sweet, R., Aldrich, B., Phiapalath, P., Van Bang, T., Ahmed, T., Kite, S., Paramasivam, S., Seiha, H., Zainol, M. Z., Nielsen, D. R. K., Ruppert, N., Fuentes, A., & Hansen, M. F. 2023. Removal from the wild endangers the once widespread long-tailed macaque. American Journal of Primatology. e23547. doi.org/10.1002/ajp.23547
26. Ramsay, M.S., Mercado Malabet, F., Klass, K., Ahmed, T., Muzaffar, S. 2023. Consequences of Habitat Loss and Fragmentation for Primate Behavioral Ecology. In: Primates in Anthropogenic Landscapes by McKinney, T., Waters, S., Rodrigues, M.A. (eds). Developments in Primatology: Progress and Prospects. Springer, Cham, Switzerland. doi.org/10.1007/978-3-031-11736-7_2
2022
25. Gumert, M.D., Ahmed, T., Hansen, M.F. & Ang, A. 2022. Macaca fascicularis ssp. aurea. The IUCN Red List of Threatened Species 2022: e.T39770A199563861. dx.doi.org/10.2305/IUCN.UK.2022-1.RLTS.T39770A199563861.en. Accessed on 03 August 2022.
24. Hansen, M.F., Ang, A., Trinh, T., Sy, E., Paramasiwam, S., Ahmed, T., Dimalibot, J., Jones-Engel, L., Ruppert, N., Griffioen, C., Lwin, N., Phiapalath, P., Gray, R., Kite, S., Doak, N., Nijman, V., Fuentes, A. & Gumert, M.D. 2022. Macaca fascicularis. The IUCN Red List of Threatened Species 2022: e.T12551A199563077. dx.doi.org/10.2305/IUCN.UK.2022-1.RLTS.T12551A199563077.en. Accessed on 03 August 2022.
2021
23. Chetry, D. & Ahmed, T. 2021. Trachypithecus phayrei. The IUCN Red List of Threatened Species 2021:e.T175862145A175862149. dx.doi.org/10.2305/IUCN.UK.2021-2.RLTS.T175862145A175862149.en. Accessed on 03 August 2022.
22. Hasan, S., S. Nath, M.T. Ahmed, M. Tasnim, S. Biswas, M.S. Hossain and T. Ahmed. 2021. MASTURBATION IN MALE CAPPED LANGUR (TRACHYPITHECUS PILEATUS) AT LAWACHARA NATIONAL PARK, BANGLADESH. Bangladesh Journal of Zoology. 49(3): 441-445.
21. Naher, H., H. Al-Razi, T. Ahmed, S. Hasan, A. Jaradat and S.B. Muzaffar. 2021. Estimated Density, Population Size and Distribution of the Endangered Western Hoolock Gibbon (Hoolock hoolock) in Forest Remnants in Bangladesh. Diversity. 13(10): 490. doi.org/10.3390/d13100490
20. Shalauddin, M., M.J. Islam and T. Ahmed. 2021. Masturbation in a male Phayre’s langur, Trachypithecus phayrei, Primate Biology. 8(2): 43–45. doi.org/10.5194/pb-8-43-2021
19. Ahmed, T., S. Nath, H. Naher, H. Jowel and S. Nasrin. 2021. Abundance and feeding habit of squirrels (Mammalia: Rodentia: Sciuridae) in an urban park, Bangladesh. Taprobanica. 10(1): 47-53. www.doi.org/10.47605/tapro.v10i1.247
18. Hasan, S., H. Al-Razi, T. Ahmed, H. Naher and S.B. Muzaffar. 2021. Observation of Infanticide in the Particolored Flying Squirrel (Hylopetes alboniger) from a Forest in Northeastern Bangladesh. Mammal Study. 46(3): 265-268. doi.org/10.3106/ms2020-0098
17. Ahmed, T. and M.A.R. Rupom. 2021. Extirpated or ignored? First Evidence of Bengal Slow Loris Nycticebus bengalensis from Madhupur National Park, Bangladesh. Asian Primates Journal. 9(2): 47-50.
16. Hasan, S., T. Ahmed, S. Nath, S. Biswas and S.B. Muzaffar. 2021. Observations on the diurnal behaviour of Common Palm Civets (Carnivora: Viverridae) in northeast Bangladesh. Journal of Bombay Natural History Society. 118. DOI: 10.17087/jbnhs/2021/v118/148755
15. Ahmed, T. and H. Naher. 2021. Status of Northern Pig-Tailed Macaque Macaca leonina (Blyth) in Satchari National Park, Northeast Bangladesh. Asian Primates Journal. 9(1): 32–40.
14. Ahmed, T., H. Al-Razi and F. Akhtar. 2021. Lycodon aulicus (Common Wolf Snake) Diet. Herpetological Review. 52(1): 163.
13. Ahmed, T., S. Hasan, H. Naher and S.B. Muzaffar. 2021. Predation attempt on Fejervarya sp. by Hoplobatrachus tigerinus at Patharia Hill Reserve Forest, Moulvibazar, Bangladesh. Herpetology Notes. 14: 537–538.
2020
12. Roos, C., Helgen, K.M., Miguez, R.P., Thant, N.M.L., Lwin, N., Lin, A.K., Lin, A., Yi, K.M., Soe, P., Hein, Z.M., Myint, M.N.N., Ahmed, T., Chetry, D., Urh, M., Veatch, E.G., Duncan, N., Kamminga, P., Chua, M.A.H., Yao, L., Matauschek, C., Meyer, D., Liu, ZJ., Li, M., Nadler, T., Fan, P.F., Quyet, L.K., Hofreiter, M., Zinner, D. and Momberg, F. (2020). Mitogenomic phylogeny of the Asian colobine genus Trachypithecus with special focus on Trachypithecus phayrei (Blyth, 1847) and description of a new species. Zoological Research. 41(6): 656–669. dx.doi.org/10.24272/j.issn.2095-8137.2020.254
11. Al-Razi, H., S. Hasan, T. Ahmed and S.B. Muzaffar. 2020. Home Range, Activity Budgets and Habitat Use in the Bengal Slow Loris (Nycticebus bengalensis) in Bangladesh. In Evolution, Ecology and Conservation of Lorises and Pottos by K.A.I. Nekaris and A.M. Burrows (Eds.). Cambridge University Press, Cambridge, UK. doi.org/10.1017/9781108676526.019
10. Ahmed, T., S. Hasan and H. Naher. 2020. Predation of Common Tree Frog Polypedates leucomystax by Ornate Flying Snake Chrysopelea ornata in Satchari National Park. Himalayan Naturalist. 3(1): 34-35.
9. Ahmed, T., S. Hasan, H. Naher and S.B. Muzaffar. 2020. Record of Great Woolly Horseshoe Bat (Rhinolophus luctus, Temmick 1834) at Northeast Bangladesh. Journal of Bat Research & Conservation.13 (1): 40-44. DOI: 10.14709/BarbJ.13.1.2020.08
2019
8. Ahmed, T., H. Al-Razi, and S. Hasan, 2019. An observation on mud-puddling butterflies at mid-night in Satchari National Park, Bangladesh. NeBIO. 10(3):123-125.
7. Hasan, S., T. Ahmed and H. Al-Razi. 2019. Breeding Record of Common Hoopoe Upupa epops at Satchari National Park in North-eastern Bangladesh. Journal of Threatened Taxa. 11(1): 13171-13172.
6. Mondal, A.C., F. Ahmed and T. Ahmed. 2019. Eutropis carinata Diet. Herpetological Review. 50(1): 140.
2017
5. Naher, H., S.I. Khan, T. Ahmed. 2017. Threats and Conservation Problems of Non-Human Primates in Moist Deciduous Forest of Bangladesh. Journal of the Asiatic Society of Bangladesh. 43(1): 11-22.
2016
4. Naher, H., S.I. Khan, T. Ahmed. 2016. Population Status and Distribution of Rhesus Macaque in Moist Deciduous Forest of Bangladesh. Bangladesh Journal of Zoology. 44(1): 61-72.
3. Neogi, A.K., M.S. Rahman, A. Sultana, A.C. Mondal, T. Ahmed and N. Sadat. 2016. Six New Records of Butterflies from Lawachara National Park, Bangladesh. Tropical Natural History. 16 (2): 119-122
2015
2. Shahadat, O., T. Ahmed, A.K. Neogi, T. Khan and M.A. Khan. 2015. Notes on two Nymphalid butterflies new to Bangladesh. Taprobanica. 7 (04): 260–261
2014
1. Shahadat, O., T. Ahmed and A.K. Neogi. 2014. Confirmation record of Euploea radamanthus radamanthus Fabricius, 1793 (Family: Nymphalidae) from Dudpukuria-Dhopachari Wildlife Sanctuary, Chittagong, Bangladesh. International Journal of Fauna and Biological Studies. 1 (5): 22-23.