Occurrence of the Madras Tree Shrew Anathana ellioti (Waterhouse) (Scandentia:Tupaiidae) in the BiligiriranganHills, Karnataka, India
Umesh Srinivasan 1, N.S. Prashanth 2, Shyamal Lakshminarayanan 3, Kalyan Varma4, S. Karthikeyan 5, Sainath Vellal 6, Giri Cavale 7, Dilan Mandanna 8, Philip Ross 9 & Thapa10
1 Post-graduate Program in Wildlife Biology & Conservation,
Wildlife Conservation Society - India Program & National Centre for
Biological Sciences, Bangalore, Karnataka, India
2 Vivekananda Girijana Kalyana Kendra, BR Hills, Karnataka 571441, India
3 261, 9th Cross, Tatanagar, Karnataka
560092, India
4 #1288, 17th Cross, 7th Sector, HSR Layout, Bangalore,
Karnataka 560034, India
5 Jungle Lodges & Resorts, MG Road, Bangalore, Karnataka
560001, India
6 #47, 1st phase, 4th main, Girinagar,
Bangalore, Karnataka 560085, India
7 # 218, 9th Main, Arakere MICO layout
I stage, Bannerghatta Road, Bangalore, Karnataka
560076, India
8 Hudikeri village hand post, South Coorg, Karnataka 571249, India
9 No. 52, Curley Street, Richmond Town, Bangalore, Karnataka
560025, India
10 Jungle Lodges & Resorts, K Gudi,Chamarajanagar, Mysore, Karnataka, India
Email: 1 umesh.srinivasan@gmail.com; 2 prashanth.ns@gmail.com
(corresponding author); 3 lshyamal@gmail.com; 4 kalyan@rtns.org; 5
papilio@vsnl.com; 6 svellal@gmail.com; 7 giricavale@gmail.com; 8
mandil47@yahoo.co.in; 9 philip_ross@hotmail.com
Date of online publication 26 May 2009
ISSN
0974-7907 (online) | 0974-7893 (print)
Editor: Meera Oommen
Manuscript
details:
Ms
# o2100
Received
25 November 2008
Final
received 07 May 2009
Finally
accepted 09 May 2009
Citation: Srinivasan, U., N.S. Prashanth,
S. Lakshminarayanan, K. Varma,
S. Karthikeyan, S. Vellal,
G. Cavale, D. Mandanna, P.
Ross & Thapa (2009). Occurrence of the Madras
Tree Shrew Anathana ellioti(Waterhouse) (Scandentia: Tupaiidae)
in the Biligirirangan Hills, Karnataka, India. Journal
of Threatened Taxa 1(5): 283-286.
Copyright: © U. Srinivasan, N.S. Prashanth, S. Lakshminarayanan, K. Varma, S. Karthikeyan, S. Vellal, G. Cavale, D. Mandanna, P. Ross
& Thapa 2009. Creative Commons Attribution 3.0 Unported License. JoTT allows
unrestricted use of this article in any medium for non-profit purposes,
reproduction and distribution by providing adequate credit to the authors and
the source of publication. The authors would like to thank AjithKumar for reviewing an earlier version of this article and the referees for
their useful comments on the article.
For Figures, Images &
Table – Click here
The
Madras Tree Shrew Anathana ellioti (Waterhouse 1850), also referred to as the Indian
Tree Shrew, is a small mammal belonging to the order Scandentia,
and is endemic to peninsular India. It is distributed “both in the dry and
moist deciduous forests of peninsular India, south of the Ganges” (Prater
1971), to Bihar in the east, and the Satpuras in the
west, up to an altitude of 1400m ASL (Menon2003). Tree Shrews are small mammals native
to tropical forests of South and South-East Asia and constitute two families (Tupaiidae and Ptilocercidae)under the Order Scandentia (IUCN 1995).Their earlier classification under Insectivora is no longer viable and the creation of a separate order is supported by
recent molecular evidence (Schmitz et al. 2000). They are closely related to primates and form
one of the four superordinal cladesalong with rodents, primates and flying lemurs (Murphy et al. 2001). Scandentiaalong with Lagomorpha form the cohort Glires, a sister group of primates (Schmitz et al.
2000). The genus Anathanais monotypic with A. ellioti being the only
species in this genus.
More
detailed information on the distribution of this species in India is mostly in
the form of short notes on sight records (e.g. George 1989; Shrivastava1995; Gupta 1996, Pradhan 1997). Karthikeyan (1992)
presents the results of a detailed study of the species in Yercaudand summarises the distribution of the species from
various locations in the following states: Andhra Pradesh, Kerala, Jharkhand,
Madhya Pradesh, Maharashtra, Orissa, Uttar Pradesh (near Monghyr)
and Tamil Nadu (Fig. 1). The species has
so far not been recorded from the state of Karnataka. Moluret al. (2005) show a record from southern Karnataka; however, no details of any
published information from the state are included. The sightings of A. ellioti from Yercaud (Karthikeyan1992) are geographically the most proximate sightings of the species from BR
Hills.
Information
on the ecology and activity patterns of this species is scanty, with only one
relatively detailed study from Yercaud, Tamil Nadu (Karthikeyan 1992, 2001). Current threats to this species across its range have been identified as
habitat loss due to plantations, denudation for agriculture, small-scale
logging and clear-cutting, in addition to mortality due to road kills, hunting
and local harvest for medicinal use (Karthikeyan 1992
& Molur et al. 2005). The IUCN Red Data List classifies it as Near
Threatened (NT), with “major threats affecting its habitat and/or population.”
Over
the past four years, several observers have sighted this species from the Biligiri Rangaswamy Temple
Wildlife Sanctuary (BRTWLS), or BR Hills (770-77016’E & 11047’-1209’N,
540km2) in Chamarajanagar district, southern
Karnataka. BR Hills consists of roughly
four parallel hill ranges (600m to 1816m ASL) running north-south, and supports
several vegetation types – moist and dry deciduous forest (61.1%), scrub
(28.2%), grassland (3.4%), evergreen forest (6.1%), and shola(0.8%) (Ramesh 1989). These records represent the first reports of
the sighting of this species in BR Hills, and possibly Karnataka, and a
significant range extension of the Madras Tree Shrew. A previous faunal survey of the area (Srinivasa et al. 1997) did not report the species. RC
Morris, a coffee-planter and estate owner in BR Hills in the mid 1900s with a
keen interest in natural history, and several articles on the wildlife of the
area in the Journal of the Bombay Natural History Society also did not report
the presence of the tree shrew. Interviews with some members of the local Sholaga tribe indicated that they do not
possess any traditional knowledge of this species, although this needs to be
more formally investigated. Details of
the sightings (in chronological order) are provided in Table 1. Photographs of three individuals by the
authors corresponding to sighting number 5, 6 and 9 (Table 1) are presented
(Images 1, 2 & 3) The location of these sightings are separated by a
distance of at least 3km.
The
first sighting was from Basavanakadu in 2003.
Subsequently frequent trips were undertaken to this area resulting in two
further sightings in 2004. In 2006, a
photo of the species was obtained further south, leading to subsequent
sightings (No. 6, 7, 8 & 9) around that area. Apart from sightings 3 & 9, where there
was a special effort undertaken to look for the species, all others were
opportunistic in nature. The present sightings
are clustered in two areas in the sanctuary – one cluster around the BR Hills
settlement (Nos. 1-4) and another around K Gudi (Nos.
5-9) (Fig. 2). This is perhaps because of the opportunistic nature of the
sightings and lack of a systematic survey for the species.
On
most occasions, individual(s) were sighted on the ground for brief periods of
time, and apart from identifying the species, additional observations could not
be made. Sighting numbers 01 and 05 were of single individuals crossing the BR
Hills-Chamarajanagar main road. Identification was based on the squirrel-like
body shape with a long pointed snout, russet-brown colourwith grayish fore-parts, and absence of stripes. Photographic evidence (Image
1) was first obtained from Yemmegadde Pala and
subsequently from K Gudi (Image 2) and Durgur Road (Image 3). Sighting number 07 was of two individuals. One of them was seen up a Terminalia tree, approximately 5-6 feet from the
ground, exploring a cavity in the tree trunk. While one individual quickly got
down to the ground and disappeared into the undergrowth, the other lingered on
the tree for about a minute or so basking in the early morning winter sun
before following suit. The latest
sighting (number 09, Image 3) was for about 5 min. Although the animal was seen
actively moving about between Terminaliatrees, it was never seen climbing any of them. It moved quickly, never staying still at any location, actively foraging
under the leaf litter and peeling the bark off a dead tree trunk with its
forelimbs.
The
above nine observations of the species and the photographs indicate the
presence of the species in BR Hills, raising the possibility of its presence in
the contiguous hill ranges which share similar habitat features. The MM Hills Reserve Forest situated between Yercaud and BR Hills is likely to be a potential
habitat. Although, direct contiguity is
only through a few surviving forest fragments in and around Perumbalai,Thoppur and Bommiampetti,
the presence of the species in BR Hills raises the possibility of the species
in MM Hills Reserve Forest and the other contiguous forest areas - Bandipur, Cauvery Wildlife Sanctuary and MM Hills Reserve
Forests of Karnataka and the Satyamangalam range in
Tamil Nadu. The species is yet to be reported from these areas.
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