Journal of Threatened Taxa |
www.threatenedtaxa.org | 26 June 2021 | 13(7): 18888–18893
ISSN 0974-7907 (Online) | ISSN 0974-7893
(Print)
https://doi.org/10.11609/jott.6290.13.7.18888-18893
#6290 | Received 10 June 2020 | Final received 15 June 2021 | Finally
accepted 17 June 2021
First photographic evidence and
distribution of the Indian Pangolin Manis crassicaudata
(Mammalia: Pholidota: Manidae)
in Sariska Tiger Reserve, Rajasthan, India
Hemant Singh 1, Gobind
Sagar Bhardwaj 2, N. Gokulakannan
3, Saket Agasti 4 & K. Aditya
5
1–5 Rajasthan Forest Department,
Jaipur, Rajasthan, India.
1 Divisional Forest Office
Jhalawar, Near ITI, Jhalawar, Rajasthan 326001, India.
2 Rajasthan Pollution Control
Board, Jhalana Institutional Area, Jaipur, Rajasthan 302004, India.
3–5 Deputy Conservator of Forest
Office, Sariska , Alwar, Rajasthan 301022, India.
1 hemant.shekhawat6@gmail.com
(corresponding author), 2 gobindsagarbhardwaj@gmail.com, 3 gogulselvi@gmail.com,
4 saket.agasti@gmail.com, 5 adityak2025@gmail.com
Editor: Honnavalli N. Kumara,
Salim Ali Centre for Ornithology and Natural History, Coimbatore, India. Date
of publication: 26 June 2021 (online & print)
Citation: Singh, H., G.S. Bhardwaj, N. Gokulakannan, S. Agasti & K.
Aditya (2021). First photographic evidence and
distribution of the Indian Pangolin Manis crassicaudata
(Mammalia: Pholidota: Manidae)
in Sariska Tiger Reserve, Rajasthan, India. Journal of Threatened Taxa 13(7): 18888–18893. https://doi.org/10.11609/jott.6290.13.7.18888-18893
Copyright: © Singh et al. 2021. Creative Commons Attribution
4.0 International License. JoTT allows unrestricted use, reproduction, and
distribution of this article in any medium by providing adequate credit to the
author(s) and the source of publication.
Funding: Government of India and
Government of Rajasthan.
Competing interests: The authors
declare no competing interests.
Acknowledgements: We thank Dr.
G.V. Reddy, Principal Chief Conservator of Forests (Head of Forest Force),
Rajasthan for support and guidance, the frontline staff of STR for their effort
in the field and Rajesh, Ratan and Sachin Kumar (Ranthambore Tiger Reserve-II) for help with the data
analysis.
Abstract: The Indian Pangolin, although
considered to be widely distributed due to its elusive nature and low detection
probability its status and distribution records are very limited. Rampant
hunting for local consumption, and illegal wildlife trade for medicinal and ornamental
purposes has pushed the species towards serious decline. Herein, we report the
first photographic records of the Indian Pangolin in Sariska
Tiger Reserve (STR), Rajasthan, India. During our camera trapping study
from June 2018 to April 2019, out of 29,220 camera trapping nights the species
was recorded on four occasions, at two different locations in STR. The species
was recorded in the open forest areas near natural water bodies situated in the
middle of dense Anogeissus pendula
forests.
Keywords:
Endangered, illegal wildlife trade, camera trap.
The order Pholidota is represented by eight species in a single family Manidae distributed from Africa to Asia. Out of eight, two species occur in India—the Indian Pangolin Manis crassicaudata (E. Geoffroy,
1803) is widely distributed across most parts of the country starting from the southern part of the Himalaya, also in southern Nepal,
Bangladesh, Pakistan, and Sri Lanka (Tikader 1983; Srinivasulu & Srinivasulu 2012; Mahmood et al. 2020);
and the Chinese Pangolin Manis pentadactyla is mainly distributed across the northeastern states of the country and Nepal (Srinivasulu & Srinivasulu 2012; Challender et al. 2019). The two are
morphologically similar however they can be differentiated based on the size of the scales, the Indian pangolin’s scales are relatively larger
than those of the Chinese Pangolin; rows of scales, Indian Pangolin have scales
11–13 rows across the back while Chinese Pangolin have 15–18 rows across the
back (Pocock 1924). Indian Pangolins are quite adaptive to
modified habitats having abundant prey and less exploitation pressure (Mahmood
et al. 2020). The Indian Pangolin is nocturnal and rests in burrows during the
daytime. Two types of burrows have been reported for Indian Pangolins, i.e., feeding burrows and living burrows (Mahmood et al. 2020). It
uses its long protrusible and glutinous tongue to predate on
ants and termites; consuming the eggs, young and adults of ants and termites,
also ingests grit, sand and small stones that aid
mastication (Prater 2005). Thus, the species plays an
important ecological role by consuming termites which are a serious insect pest
for agricultural crops and buildings (Roberts 1997). Indian Pangolins are typically solitary in nature, except during the mating and rearing of the young ones; It is believed that scent
markings by males using urine, scat or anal glands are the means to maintain
territory and social relations (Mahmood et al. 2020). The species inhabits wide
varieties of habitat and recorded from Indian subcontinent in
both forested and non-forest areas (Roberts 1977; Mahmood et al. 2020). Pangolins occurs in very low densities, few available studies estimating densities for various species of Pangolins suggests density of 0.0001
individual per km2 for the Indian Pangolin,
0.001 individuals per km2 for the Chinese Pangolin and 0.8 individuals per km2 for the White-bellied
Pangolin Phataginus tricuspis in Africa (Wu et al. 2004; Akpona et al. 2008; Mahmood et
al. 2014, 2018).
The Indian Pangolin is protected
under Appendix I of the Convention on International Trade in Endangered Species
(CITES) and Schedule I species in the Wildlife (Protection) Act 1972, it is
also listed as ‘Endangered’ in the IUCN Red List of Threatened Species due to its rapid decline in their numbers (Mahmood et al. 2020). Despite being protected under many
regimes of the law, the population of this species is declining rapidly; mainly
because of hunting for local use as meat, for traditional medicines and rampant illegal international trade for medicinal and ornamental
purposes (Mahmood et al. 2012; Mohapatra et al. 2015). The scales of the
species are used as a whole, or in powdered form in the preparation of
traditional medicines in southeastern Asia, mainly
China and Vietnam (Baillie et al. 2014; Mohapatra et al. 2015; Challender & Waterman 2017; Mahmood et
al. 2019). In India, hunting and illegal trade of 119 pangolin seizures were
recorded from year 2009 to 2018 and an estimated 7,500 individuals were killed (Kumar et al. 2020). Additionally, the Indian Pangolins in their
habitat were killed due to the belief that they dig up graves and pull out the
buried dead bodies. In addition, farmers kill the animal allegedly for damaging
their crops and agricultural lands by digging the burrows
(Mahmood et al. 2018).
In
Rajasthan, the pangolin was once believed to be widely distributed but
now it has become rare (Sharma et al. 2003). The species is recorded from
Ajmer, Bikaner, Churu, and Nagaur districts in the state (Sharma et al. 2003; Dookia & Jakher 2004). It is also reported in three protected areas in the state
namely Sajjangarh Wildlife Sanctuary, Mukundra Hills Tiger Reserve and Keoladeo National Park (Bhatnagar et al.
2013; Latafat & Sadhu 2016; Singh et al. 2017); one individual was rescued in Dhani Talai area of Pratapgarh forests in southern Rajasthan in 2007.
Study Area
The Sariska Tiger Reserve (STR) is situated in the Aravalli Hills in Alwar District of the Indian State of Rajasthan between 76.241°–76.545°N & 27.095°–27.648°E. The climate is subtropical, with distinct summer, monsoon and winter seasons; temperature ranges 2–47 °C with an average rainfall of 621 mm (Shekhawat 2015). The total area of the reserve is 1,213.31 km2, with 881 km2 critical tiger habitat (CTH) and 332 km2 buffer area (Shekhawat 2015). In STR the altitude varies 240–777 m rugged terrain, numerous narrow to large valleys, and plateaus are main characteristic feature of habitat; Kankwari (524 m) and Kiraska (592 m) are two main plateaus. In vastly scattered forest has various geological formations and soil depth varies from few centimetres on hill slopes to 1 m in valleys (Yadav & Gupta 2006). The vegetation is tropical dry deciduous forest (Champion & Seth 1968) with Dhonk Anogeissus pendula as the dominant tree species, other species include Butea monosperma, Boswellia serrata and Ziziphus mauritiana. Apart from reintroduced Tigers Panthera tigris, Leopard P. pardus, Striped Hyena Hyaena hyaena, Jackal Canis aureus, and the Jungle Cat Felis chaus are the major carnivores in the reserve; while Chital Axis axis, Sambar Rusa unicolor, Nilgai Boselaphus tragocamelus, and Wild Boar Sus scrofa are major prey species (Shankar et al. 2010). STR is subjected to an extensive anthropogenic pressure, as 2,254 families reside in 26 villages situated in the area (Shekhawat 2015). In addition to that very high pilgrimage inside the reserve, habitat fragmentation due to state highways passing through the STR, increasing human-wildlife interactions and low staff strength for law enforcement are other major problems in the reserve (Bhardwaj 2018).
Materials and methods
This record was obtained as part of a camera trapping exercise that was being undertaken by the authors for monitoring of tigers in STR in three different phases. For camera trapping, the STR was divided into 440 grids of 2 km2 each, the grids are equally distributed into two blocks (north block and south block) having 220 grids each covering an area of 440 km2 for management purpose. Among all, 84 grids, distributed randomly among both the blocks, were identified and used as permanent camera trap stations (Image 1). The details of camera trap study is provided in Table 1. Camera traps were deployed in each block with at least one pair of camera deployed in each grid. Cuddeback 1279 20 Mega-pixel trail cameras
were used for the exercise. The camera traps were deployed 40–50 cm above ground at a distance of 5–6 m on both sides from the centre of the trail. The delay between subsequent photographs was kept at 5 seconds so that young ones with mother don’t get missed. Cameras were operated on a 24-hour basis. All the cameras were regularly checked in the field for proper functioning and status of the batteries. Geo coordinates of the location were recorded using handheld GPS
(Garmin eTrex 20x) device set to datum WGS 84.
Results
The Indian Pangolin was recorded on
four occasions at two different locations from an effort of 29,220 trap nights.
Three occasions of the four was in a single camera trap
location in Jahaj beat of Tehla range (27.286°N, 76.418°E) (Images 1–3), which was located in a valley
near a water body. The observed habitat of the camera trap location was
undulating with moderately dense vegetation Zizyphus mauritiana and Butea monosperma vegetation in the valley and dense
undisturbed Anogeissus pendula forest on the upper regions. We also recorded one active burrow in the area based on fresh
signs of digging and another inactive burrow (Image7). The burrows were deeper, the inactive burrow had a depth of 1.6 m while the
active burrow was 2.8 m deep. Both the burrows had round openings. The second
site of Indian Pangolin capture location was in Bija forest area near Panidhal Village (27.524° N 76.440° E).
In addition, one Indian Pangolin
was observed in a moderately dense Anogeissus forest on a small hillock in Loj Beat of Talvriksh range during the morning hours on 29 August 2019 (Image 6). It tried
to hide itself among the shrubs sensing the presence of humans
in close vicinity and ultimately it disappeared into a thicket. All the camera
trap images of Indian Pangolins were captured during the late night hours from
2348 h to 0219 h that demonstrates the fact that the species is active in night
except for one individual which was observed in the
morning.
Discussion
Despite being one of the most
traded species throughout the globe, very little is known about the
distribution and current status of the pangolin in most of its range including
Rajasthan. This can be attributed to its elusive nature
and low density, as evident from the study that the species was captured only
four times out of 29,920 camera nights. STR is one of the most researched
protected areas (Bhardwaj 2018), but there are no published records barring a single mention in text on Indian Pangolin in the STR (Bhardwaj 2018). The camera trap
pictures of the Indian Pangolin confirm its presence in the STR and adds to its
biological diversity. Further, this will aid in formulating robust strategies for the conservation of the species in STR. Although the effort was
intensive, the cameras were mainly installed on trails and areas for capturing
the big cats, as big cats have larger home ranges and they prefer regular
trails and paths for walking to avoid injuries, but the same cannot
be assumed for the smaller vertebrates like the Indian Pangolin so a little
bias in less detection of pangolin during the study cannot be ruled out. Since
the species inhabits wide varieties of habitats and outside protected areas (Mahmood et al. 2020), the comprehensive study in STR as well
as adjoining areas on the ecological aspects and population dynamics of the
species would give more insight on the Indian Pangolin. The measures like
creating awareness among the local people and frontline staff,
including local communities to protect the Indian Pangolin from traditional
hunting would help in conserving the species.
Table 1. Details of camera
trapping survey design used in the study.
Period of Survey session |
Extent of study area |
Survey effort |
01.vi.2018 to 30.xi.2018 |
84 grids (2km2)
permanent camera trap locations in both north and south block |
10,080 camera trap nights |
17.xii.2018 to 16.i.2019 |
220 grids (2km2) of
south block |
6,820 camera trap nights |
04.ii.2019 to 01.iv.2019 |
220 grids (2km2) of
north block |
12,320 camera trap nights |
References
Akpona, H. A., C. A. Djagoun
& B. Sinsin (2008). Ecology and ethnozoology of the
three-cusped pangolin Manis tricuspis (Mammalia, Pholidota) in
the Lama forest reserve, Benin. Mammalia 72: 198–202.
Baillie, J., D. Challender, P. Kaspal , A. Khatiwada, R. Mohapatra & H. Nash (2014). Manis crassicaudata. The IUCN Red List of Threatened Species 2014:
e.T12761A45221874. Downloaded on 09 May 2020. https://doi.org/10.2305/IUCN.UK.2014-2.RLTS.T12761A45221874.en
Bhardwaj, G.S. (2018). Sariska Tiger Reserve: A Managerial
Approach to the Problems of Landscape. Indian Forester 144: 900–910.
Bhatnagar, C., V. Sharma & K. Jani (2013). An annotated study of mammalian
fauna of the Sajjangarh Wildlife Sanctuary, Udaipur,
Rajasthan (India). Department of Zoology, University College of Science,
Mohanlal Sukhadia University,
Udaipur, Rajasthan, India, 4pp.
Challender, D. & C. Waterman (2017). Implementation of CITES Decisions
17.239 b) and 17.240 on Pangolins (Manis spp.), CITES SC 69 Doc. 57 Annex. Available from, https://cites.org/sites/default/files/eng/com/sc/69/E-SC69-57-A.pdf
Challender, D., S. Wu, P. Kaspal, A. Khatiwada, A. Ghose, N. Ching-Min Sun, R.K. Mohapatra & T.L. Suwal (2019). Manis pentadactyla (errata version published in 2020). The IUCN Red List of Threatened
Species 2019: e.T12764A168392151. Downloaded on 25 May 2020. https://doi.org/10.2305/IUCN.UK.2019-3.RLTS.T12764A168392151.en
Dookia, S. & G. R. Jakher (2004). Status of Indian Pangolin (Manis crassicaudata) in the arid part of Thar desert of Rajasthan. Tiger paper, 31: 9–10.
Kumar, V.P., A. Rajpoot & S.S. Rasaily (2020). Peril for pangolins: an evaluation the status of the last decade in
India. Forensic Science International: Reports 2: 100058. https://doi.org/10.1016/j.fsir.2020.100058
Latafat, K. & A. Sadhu (2016). First Photographic Evidence of Indian
Pangolin Manis crassicaudata E. Geoffroy, 1803 in Mukundara Hills Tiger Reserve (MHTR),
Rajasthan, India. Journal of the Bombay Natural History Society 113: 21–22.
Macdonald, E.A., D. Burnham, A.E. Hinks, A.J. Dickman, Y. Malhi & D.W. Macdonald (2015). Conservation inequality and the
charismatic cat: Felis felicis. Global Ecology and Conservation 3: 851–866.
Mahmood,
T., R. Hussain, N. Irshad, F. Akrim
& M. S. Nadeem (2012). Illegal
mass killing of Indian Pangolin (Manis crassicaudata) on Potohar Region, Pakistan. Pakistan
Journal of Zoology 44:
1457–1461.
Mahmood,
T., N. Irshad & R. Hussain (2014). Habitat preference and population
estimates of Indian Pangolin (Manis crassicaudata) in District Chakwal of Potohar Plateau, Pakistan. Russian Journal of Ecology 45:
70–75.
Mahmood,
T., K. Kanwal & I. U. Zaman (2018). Records of the Indian Pangolin (Mammalia:
Pholidota: Manidae: Manis crassicaudata)
from Mansehra District, Pakistan. Journal of Threatened Taxa 10(2): 11254–11261. https://doi.org/10.11609/jott.3314.10.2.11254-11261
Mahmood,
T., D. Challender, A. Khatiwada, S. Andleeb, P. Perera, S. Trageser, A. Ghose
& R. Mohapatra (2019). Manis crassicaudata. The IUCN Red List of Threatened Species 2019:
e.T12761A123583998. Downloaded on 16 May 2020. https://doi.org/10.2305/IUCN.UK.2019-3.RLTS.T12761A123583998.en
Mahmood,
T., R.K. Mohapatra, P. Perera, N. Irshad, F. Akrim, S. Andleeb, M. Waseem, S. Sharma & S. Panda
(2020). Indian
Pangolin Manis
crassicaudata (Geoffroy, 1803), pp.71–88. In: Pangolins: Science,
Society and Conservation. Academic
Press, 658pp.
Mohapatra, R.K., S. Panda, L.N. Acharjyo, M.V. Nair & D.W.S. Challender (2015). A note on the illegal trade
and use of Pangolin body parts in India. TRAFFIC Bulletin 27: 33–40.
Pocock, R.I. (1924). The External Characters of: the Pangolins (Manidae). In: Proceedings of the Zoological Society of London 94(Sep): 707–723.
Prater, H.S. (2005). The Book of Indian Animals. Oxford University Press, New Delhi, 348pp+67pls.
Roberts, T.J. (1977). The Mammals of Pakistan. Ernest Benn, London, UK, 361pp.
Roberts, T.J. (1997). Pholidota, pp. 131–135. In: The Mammals of Pakistan. Revised Edition. Oxford University Press, Karachi, 525pp.
Sankar, K., Q. Qureshi, P. Nigam, P.K. Malik, P. R. Sinha, R.N. Mehrotra, R.
Gopal, S. Bhattacharjee, K. Mondal & S. Gupta (2010). Monitoring of reintroduced tigers
in Sariska Tiger Reserve, Western India:
preliminary findings on home range, prey selection and
food habits. Tropical Conservation Science 3: 301–318.
Sharma, S., S. K. Sharma & S. Sharma (2003). Notes on mammalian fauna of
Rajasthan. Zoos’ Print Journal 18(4): 1085–1088. https://doi.org/10.11609/JoTT.ZPJ.18.4.1085-8
Shekhawat, R.S. (2015). Tiger Conservation Plan of Sariska Tiger Reserve, Sariska, Alwar, Rajasthan (India). Rajasthan Forest Department, Government of
Rajasthan, Jaipur, 378pp.
Singh, A., A. Mukherjee, S. Dookia & H.N. Kumara (2017). An updated account of mammal species and population
status of ungulates in Keoladeo National Park, Bharatpur, Rajasthan. Current Science 113: 103.
Srinivasulu, C. & B. Srinivasulu (2012). South Asian Mammals. Their
Diversity, Distribution, and Status. Springer, New York, 468pp+xii.
Tikader, B.K. (1983). Threatened Animals of India. Zoological Survey of India,
Calcutta, 307pp.
Wu, S.B., N. Lui, Y. Zhang & G. Ma (2004). Assessment of threatened
status of Chinese Pangolin (Manis pentadactyla). Chinese Journal of Applied
Environmental Biology 10: 456–461.
Yadav, A.S. & S.K. Gupta
(2006). Effect of micro-environment and
human disturbance on the diversity of woody species in the Sariska Tiger Project in India. Forest Ecology and Management 225: 178–189.