Volume 5, Issue 1 (3-2023)                   JAD 2023, 5(1): 80-91 | Back to browse issues page

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1- Shashwat Apartment, 23 Anandnagar Society, BPC Haveli Road, Alkapuri, Vadodara- 390007, Gujarat, India , razoovyas@hotmail.com
2- Voluntary Nature Conservancy, 101-Radha Darshan, Behind Union Bank, Vallabh Vidyanagar-388120, Gujarat, India
3- Vasundhara Nature Club, Amrutam, 193/Bapunagar, Joshipura, Junagadh-362002, Gujarat, India
4- Khodiyar Krupa, Asha Society, Shivnagar, Joshipura, Junagadh 362002, Gujarat, India
Abstract:   (3453 Views)
Railway lines, roadways, canals, and electricity cable networks, pose serious problems to wildlife, fragmenting habitats worldwide. These infrastructures are well-recognized as linear intrusions. Today it is a threat to wildlife, including the Mugger or Marsh Crocodile (Crocodylus palustris). The current study documents 15 crocodile-vehicle collisions (CVC) recorded in two years (2021 and 2022); 11 were on roads, and four were on railway tracks. Sex was determined for 11 individuals (five males, six females), and four unknown due to crushing). A total of 13 individuals were found dead at the various sites of collision, and two juvenile individuals were found injured, and one of them was treated successfully and returned to the wild. The high numbers (9) of CVCs occur in the Central Gujarat and follow 3 CVCs in Saurashtra, 2 CVC in the Kutch region, and one in north Gujarat. Mitigation measures would be required for the collision situationsin Gujarat are discussed. The literature survey shows totals of 75 CVCs were recorded within the last 18 years due to the state's road (n= 51, 68%) and railway (n= 24, 32%) networks, with the highest numbers of 56 CVCs observed in the Central Gujarat and lowest 2 CVC noted in north Gujarat, and no CVC was noted in south Gujarat. The high number of subadults and juvenile muggers victimized due to the CVC. The CVC site location in different regions of Gujarat state positively corresponds to crocodile populations. However, the Mugger crocodile (C. palustris) has been nationally protected under Indian Wildlife Act as Schedule I species, the IUCN criteria as ‘Vulnerable’, and the Appendix I of CITES, therefore conservation acts are essential. The CVC incidences were recorded widely in the entire species distribution range, from Iran, India, and Sri Lanka and can be classified as an emerging threat for mugger crocodiles.
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Type of Study: Original Research Article | Subject: Ecological Diversity
Received: 2023/01/25 | Accepted: 2023/03/13 | Published: 2023/03/31

1. Andrews, K. M. and Jochimsen, D. M. (2007). Ecological effects of roads infrastructure on herpetofauna: understanding biology and increasing communication, Pp: 567-582. In: C. L. Irwin, D. Nelson, and K.P. McDermott (Eds.), Proceedings of the 2007 International Conference on Ecology and Transportation. Center for Transportation and the Environment, North Carolina State University, Raleigh, North Carolina, USA.
2. Barrientos, R. and Borda de Água. (2017). Railways as barriers for wildlife: current knowledge. Pp: 43-64. In. Railway Ecology. (Ed.) L. Borda-de-Água, R. Barrientos, P. Beja, H.M. Pereira. Springer International Publishing. 320 pp. [DOI:10.1007/978-3-319-57496-7_4]
3. Benítez-López, A., Alkemade, R. and Verweij, P. A. (2010). The impacts of roads and other infrastructure on mammal and bird populations: A meta-analysis. Biological Conservation, 143: 1307-1316. [DOI:10.1016/j.biocon.2010.02.009]
4. Britton, A. R.C., Whitaker, R. and Whitaker, N. (2012). Here be a dragon: Exceptional size in a saltwater Crocodile (Crocodylus porosus) from the Philippines. Herpetological Review, 43 (4): 141-146.
5. Champion, H. G. and Seth, S. K. (1968). A Revised survey of the forest types of India. New Delhi, India, Government of India. 404 pp.
6. Choudhury, B. C. and de Silva, A. (2013). Crocodylus palustris. The IUCN Red List of Threatened Species 2013: e.T5667A3046723.
7. de Silva, A. and Lenin, J. (2010). Mugger crocodile Crocodylus palustris, pp. 94-98. In: S.C. Manolis and C. Stevenson (eds.), Crocodiles. Status Survey and Conservation Action Plan. Third Edition. Crocodile Specialist Group, Darwin, Australia.Vii+69pp.
8. Forest Department, Vadodara. (2020). Mugger Crocodile Census in Vishwamitri River, Vadodara. Social Forestry, Vadodara Division, State Forest Department, Gujarat. 50 p. (unpublished report).
9. Forman, R. T. T., Sperling, D., Bissonette, J., Clevenger, A., Cutshall, C., Dale, V., Fahrig, L., France, R., Goldman, C., Heanue, K., Jones, J., Swanson, F., Turrentine, T. and Winter, T. (2003). Road Ecology: Science and Solutions. Island Press, Washington, D. C. 481 pp.
10. FSI (Forest Survey of India). (2017). India State of Forest Report. Available at: http://fsi.nic.in/fsi-node.Accessed on 25January 2023.
11. Gujarat transportation network (GTN). (2022). Gujarat transportation. https://gujarat.pscnotes.com/gujrat-geography/gujarat-transportation-network/. (Assessed on 30 March 2023).
12. Joshi, R. (2013). Range extension of mugger crocodile Crocodylus palustris (Lesson, 1831) in upper Ganges and tributaries, lesser Himalayan zone, north India. Journal of Biology and Earth Sciences, 13: 100-109.
13. Main, M. B. and Allen, G. M. (2002). Landscape and seasonal influences on roadkill of wildlife in southwest Florida. Florida Scientist, 65: 149-158.
14. Mobaraki, A. and Abtin, E. (2007). Movement behaviour of Muggers: a potential threat. Crocodile Specialist Group Newsletter, 26: 4-5.
15. Mobaraki, A., Abtin, E., Kami, H. and Kiabi, B. H. (2013). Reproductive biology of the Mugger Crocodile, Crocodylus palustris, in Iran (Reptilia: Crocodylidae). Zoology in the Middle East, 59: 207-213. [DOI:10.1080/09397140.2013.841423]
16. Nayak, R., Karanth, K. K., Dutta, T., Defries, R., Karanth, K. U. and Vaidyanathan, S. (2020). Bits and pieces: Forest fragmentation by linear intrusions in India. Land Use Policy, 99: 104619. [DOI:10.1016/j.landusepol.2020.104619]
17. Pagdand. (2019). Report on Mugger Crocodile count at Vishwamitri, Vadodara, Gujarat, India: with an aim of wildlife conservation. Pagdand, Vadodara, Gujarat, India. 40 pp. (unpublished report).
18. Parchizadeh, J. (2019). Large tanker lorries to reduce human-crocodile interactions in southeastern Iran. Reptile Rap #196 in: Zoos' Print, 34 (11): 26-28.
19. Patel, H. and Vyas, R. (2019). Reptiles of Gujarat, India: updated checklist, distribution and conservation status. Herpetology Notes, 12: 765-777.
20. Rajvanshi, A., Mathur, V. B., Teleki, G. C. and Mukherjee, S. K. (2001). Roads, sensitive habitats and wildlife: environmental guidelines for India and South Asia. Dehradun: Wildlife Institute of India, Dehradun and Canadian Environmental Collaborative Ltd., Toronto, Canada. 215 pp.
21. Road and Building Department (RNBG). 2023. Gujarat Road Network. http://www.rnbgujarat.org/State_Highway_Road_Length_final.doc (Assessed on 30 March 2023).
22. Rodgers, W. A., Panwar, H. S. and Mathur, V. B. (2002). Wildlife Protected Area Network. In: India: a Review (Executive Summary). Dehradun, India, Wildlife Institute of India. 44pp.
23. Sharma, R. K., Jangid, A. K. and Das, A. (2021). Blood on the track: A case of Mugger (Crocodylus palustris) mortality in Jawai, Rajasthan, India. Reptiles and Amphibians, 28: 320-321. [DOI:10.17161/randa.v28i2.15591]
24. Talati, N., Kumar, R. N., Tuteja, D. and Kumar, N. (2022). Ongoing assessment of the Marsh Crocodile (Crocodylus palustris) population in the Wetlands of Anand and Kheda Districts, Gujarat, India. Reptiles and Amphibians, 29: 103-106. [DOI:10.17161/randa.v29i1.16264]
25. Trivedi, K., Patel, C. and Goyani, M. (2022). Status of Mugger Crocodile (Crocodylus palustris) and Human-Crocodile Interaction in Surat, India. Reptiles and Amphibians, 29: 329-334. [DOI:10.17161/randa.v29i1.17121]
26. Van der Ree, R., Smith, D. J. and Grilo, C. (2015). Handbook of Road Ecology. Wiley Blackwell, Oxford, UK. 513 pp. [DOI:10.1002/9781118568170]
27. Vasava, A., Patel, D., Vyas, R., Mistry, V. and Patel, M. (2015). Crocs of Charotar: status, distribution and conservation of Mugger Crocodiles in Charotar region, Gujarat, India. Voluntary Nature Conservancy, Vallabh Vidyanagar, India. 52 pp. (Report).
28. Vijaykumar, S. P., Vasudevan, K. and Ishwar, N. M. (2001). Herpetofaunal mortality on road in the Anamalai Hills, Southern Western Ghats. Hamadryad, 26: 265-272.
29. Vijaykumar, V. (1997). Evaluation of restocked mugger crocodiles and its implication in long-term conservation and management of the species in Gujarat, India, Gujarat Institute of Desert Ecology, Bhuj-Kachh, Gujarat, 65 pp. (Unpublished Report).
30. Vijaykumar, V., Vyas, R. and Choudhury, B. C. (1999). Status of Mugger and its conservation problems in Gujarat, In: Choudhury, B. C. (Ed.), ENVIS Bulletin: Wildlife and Protected Areas. Wildlife Institute of India, Dehradun, India. pp. 69-76
31. Voluntary Nature Conservancy (2022). 9th Charotar Crocodile Count- 2022, Voluntary Nature Conservancy, Vallabh Vidyanagar, Gujarat, India. pp. 12
32. Vyas R. and Vyas, R. (2002). Mugger survey in the Vishwamitri River of Gujarat, India. Crocodile Specialist Group Newsletter, 21: 9-110.
33. Vyas, R. (2010). Mugger (Crocodylus palustris) population in and around Vadodara city, Gujarat state, India. Russian Journal of Herpetology, 17: 43-50.
34. Vyas, R. (2011). New threat on Mugger (Crocodylus palustris) population of Vadodara city, Gujarat, India. Crocodile Specialist Group Newsletter, 30: 15-16.
35. Vyas, R. (2013). Recent scenario of Mugger (Crocodylus palustris) population in three districts of Gujaratstate, India. Pp: 220-226.In.Proceedings of the 22nd Working Meeting of the IUCN-SSC Crocodile Specialist Group. International :union: for Conservation of Nature, Gland, Switzerland.
36. Vyas, R. (2014). Roads and railway: cause for mortality of Muggers (Crocodylus palustris), Gujarat state, India. Russian Journal of Herpetology, 21: 237-240.
37. Vyas, R. (2018). Results of the 2015 Mugger Crocodile. IRCF Reptiles and Amphibians 25:20-25. [DOI:10.17161/randa.v25i1.14221]
38. Vyas, R. and Patel, B. H. (1990). A survey of fresh water turtles of Gujarat. Journal of the Bombay Natural History Society, 87 (1): 152-155.
39. Vyas, R. and Vasava, A. (2019). Mugger crocodile (Crocodylus palustris) mortality due to roads and railways in Gujarat, India. Herpetological Conservation and Biology, 14 (3): 615-626.
40. Vyas, R. Mistry, V. and Vaghasiya, P. (2021). Road and railway: an emerging threat to Mugger (Crocodylus palustris) population of Gujarat state, India. Reptiles and Amphibia 28 (3): 411-416. [DOI:10.17161/randa.v28i3.15652]
41. Vyas, R., Vasava A. and Mistry, V. (2020). Crocodile-vehicle collision: New threat to mugger crocodile (Crocodylus palustris) at Gujarat, India. Crocodile Specialist Group Newsletter, 39 (1): 15-19.
42. Whitaker, R. and Whitaker, Z. (1984). Reproductive biology of Mugger. Journal of Bombay Natural History Society, 81:119-127.
43. Zafar, M. and Malik, M. F. (2018). A review on status and conservation of mug¬ger crocodile. Journal of Advanced Botany and Zoology, 6 (3): 1-4.

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