New Records of Amphibian Fauna from Tura Peak Reserve Forest, West Garo Hills District, Meghalaya, Northeast India
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Journal on New Biological Reports ISSN 2319 – 1104 (Online) JNBR 4(1) 115 – 126 (2015) Published by www.researchtrend.net New records of amphibian fauna from Tura Peak reserve forest, West Garo Hills district, Meghalaya, Northeast India Meena A Sangma and P. K. Saikia* Centre For Biodiversity and Conservation, Animal Ecology & Wildlife Biology Lab, Department of Zoology, Gauhati University, Gauhati-7881014, Assam, India *Corresponding author: [email protected] | Received: 25 March 2015 | Accepted: 16 April 2015 | ABSTRACT Intensive survey has been carried out from January 2012 to December 2013. The data of amphibians were collected using Active Searching Methods during dark hours, but some amphibians were diurnal and also seen during day hours. Thus, the survey activity was performed from morning 06.00hrs to 21.00hrs. Most of the specimens were collected using handpicked methods and live photographs were also taken using Digital SLR Camera, Canon EOS 1100D model. All the specimens were measured and morphological characters were studied for identification. Observed amphibians species were released back to their natural habitat after identification, photographic records and necessary measurements. Only representative amphibian specimens were collected whenever necessary and preserved it into 10% formaldehyde. Altogether six different species of amphibian fauna have been newly recorded from Tura Peak Reserve Forest of West Garo Hills District, Meghalaya of Northeast India. Those were such as Xenophrys boetgerri, Xenophrys major, Xenophrys zunhebotoensis, Xenophrys glandulosa, Amolops monticola and Theloderma asperum. Key Words: New records, Amphibians, Tura Peak reserve Forest, West Garo Hills, Meghalaya, Northeast, Active searching method. INTRODUCTION India is incredibly rich in species diversity. About and eleven genera (ZSI, 1995). So, the present 138 species of amphibians are endemic to India survey for amphibian species in Tura Peak Reserve (Maiti & Maiti, 2011). The amphibians in India are Forest of West Garo Hills might even help to largely confined to highly diversified habitats of record more of different amphibian species of the Western Ghats and North-East region (Inger & Meghalaya. Dutta, 1986). From North-East India 105 amphibian species have been reported (Ahmed et STUDY AREA al., 2009). The richest expression in diversity and abundance of amphibians of the Northeast India is Meghalaya or “Home of Cloud” is one of the met with in the state Meghalaya as evidence from important states of Northeastern region of India and the accounts of amphibian by Boulenger (1890, a part of the mega biodiversity area of the world. It 1920), Kripalani (1961), Yazdani & Chanda has actual forest cover 15,657 km2 69.8% of the (1971), Pillai & Yazdani (1973, 1977, 1979, 1980) total geographical area) but the recorded forest area and Sahu & Khare (1983). In Meghalaya alone is about 9496 km2 (42.34% (FSI, 1997). Garo Hills there are 33 species of amphibia under six families is situated on the Western part of Meghalaya and 115 Sangma and Saikia JNBR 4(1) 115 – 126 (2015) __________________________________________________________________________________________ bounded on the North-West and North by Assam, most important part of Tura range of Garo hills East by West Khasi hills district and South and the running through East –West alignment, extending South West by Bangladesh. Tura Peak reserve from Tura, west Garo hills to Siju and South Garo forest of west Garo hills of Meghalaya lies between hills. Tura Peak is stands next to Nokrek Peak or 25°00 and 26°10 N latitude and 89°45 and 92°45 Nokrek Biosphere reserve that supports large E Longitude. The original name of Tura is Durama numbers of biodiversity components. Imbama, the name of goddess who looks after the Tura peak supports tropical moist deciduous mountain. Total area of the Tura Peak Reserve forest mixed with some evergreen species (Ray & forest is around 3.94 km2 with a height of about Alam, 2002). It has two beautiful waterfalls- 983m msl. It is located 5.6 km away from the Rongbangdare and Rengsangrap. It has many small eastern part of Tura town (Samson, 2006). It is a streams without names and three streams - Fig 1. Sketch map of Meghalaya and Garo Peak study area of Meghalaya. Chitoktak, Gandrak, Rongkhon which are strewn of West Garo Hills District of Meghalaya. At with huge boulders and stones. All these three present it has five districts; East Garo hills, West streams are flowing down from Tura peak Garo hills, North Garo Hills, South Garo Hills and popularly known as “Tura A.bri” by the Garos. South-west Garo hills. There are three important Since, it has small streams surrounded by huge mountain ranges in these districts. They are (1) trees, small trees, shrubs, herbs, climbers and Tura Range (2) Arbella Range and (3) Ranggira patches of bamboo, it is a good site for Range. Tura range is one of the most important inventorying of amphibian species and studying its ranges in west Garo hills. There are many mountain micro-habitat. The entire area under Garo hills was peaks located in this range. They are Tura Peak, organized as single administrative district in 1873 Nokrek Peak, Meminram Peak, Nengminjok Peak, and Tura as its Headquarter. In October 1979, the Chitmang Peak, Balpakram Hills and Dura banda. district was bifurcated into two districts; West Garo Many Biologists have explored Nokrek Peak Hills and East Garo Hills. South Garo Hills came (Nokrek Biosphere Reserve) and Balpakram hills into existence on 18th June 1992 after the division (Balpakram National Park) as it is rich in both flora 116 Sangma and Saikia JNBR 4(1) 115 – 126 (2015) __________________________________________________________________________________________ Plate-1: Phographs shows the (a) Rengsangrap Waterfalls in the mid-zone of Tura Peak Reserve Forest and (b) Gandrakdare Waterfalls on the foot of Tura Peak Reserve Forest. and fauna. Tura Peak has its own charm and beauty methodology. To achieve the expected goal, for the people of Tura Town but neglected by several visits were made in different localities of Biologists. S0, we have chosen Tura Peak as our the study area such as Chitoktak, Upper study area. Chandmary, Upper Babupara, Nikranga.ding and It has a fairly high temperature for the most Boldaka.ding. The amphibians were either aquatic, part of the year, i.e. from March to October with terrestrial or arboreal, all the collections were made August as the hottest month having the mean in different habitats such as streams, side of maximum and mean minimum as 24.3°C and streams, sandy soil, decaying logs, inside certain 17.8°C respectively (Temperature record for holes on trees, bamboo leaves, tree stumps, fern Meghalaya, 1978-1981). It has average annual leaves, moist soil, shaded forest ground, under dead rainfall about 2689mm of which more than two- leaves, under big boulders the sampling areas were thirds are received in the four months, May to designed as per the habitats. Most of the amphibian August. It has lower Gondwana rocks consists of surveys were done after dark (18.00 hrs) but certain pebble bed, sandstones and carbonaceous shale amphibians are diurnal and it could be seen during with streaks and lenses of coal. the day time. Thus, 16 hrs field surveys were made from morning 06:00 to 12:00hrs and afternoon Methods of study 13:00 to 16:00 hrs and from evening 16:00 hrs till Intensive survey of amphibian species has been night 21:00 hrs. During survey at night, search light carried out from January, 2012 through December have been used with an input of DC 7.5v 500mA. 2013. The data of amphibians were collected using Most of the amphibian specimens were collected systematic sampling survey and active searching using handpicked methods, but some of them were method, as described by IUCN amphibian survey also collected using small hand-made nets attached 117 Sangma and Saikia JNBR 4(1) 115 – 126 (2015) __________________________________________________________________________________________ to 1.50m handle, specially prepared for the RESULTS AND DISCUSSION purposes. The captured live specimens were photographed with Cannon Camera Model-EOS New Record from Meghalaya 1100D with EFS 18-55mm Image stabilizer Macro We have uncovered altogether 14 species of 0.25m/0.8ft. Its Snout to vent Length (SVL) was amphibian fauna in Tura Peak reserve forest, of carefully measured with Digital slide Caliper which, 12 species were newly recorded from entire Model No. 6/150mm and its morphological Meghalaya state. Those were such as Xenophrys characters were studied for species identification boettgeri (Boulenger, 1899), Xenophrys glandulosa with the help of published literature. The (Fei, Ye & Huang, 1991), Xenophrys major microhabitat of each species were observed, (Boulenger, 1908) and Xenophrys zunhebotoensis locality, altitude (using Garmin GPS) and date of (Mathew & Sen, 2007) under Megophryidae collections were noted down. Single specimens family, the species Theloderma asperum from each genus was collected and preserved in (Boulenger, 1886) under the family Rhacophoridae, 10% formalin and kept carefully for future the species Hylarana erythraea (Schlegel, 1837), references in Biodiversity Museum of Gauhati Fejervarya teraiensis (Dubois, 1984), Occidozyga University whereas, the other studied specimens borealis(Annandale, 1912), Polypedates maculates released back into their own natural habitat. All the (Gray, 1838), Amolops monticola (Anderson, 1871) observed specimens were represented using tabular and Polypedates assamensis (Mathew & Sen, form. Table-1: A. Body length and microhabitat use by newly recorded amphibian fauna in the study area. Scientific name/Family Common Vernacular Length Microhabitats No. Name Name (cm) encountered Megophryidae: Pale- Diplok 8 cm Wooded forest, 3 Xenophrys boettgeri shouldered Brimchang shaded ground. Frog Xenophrys glandulosa Glandular Diplok 13 cm Side of streams, 9 (Fei et al, 1991). Horned Toad Nokma forested area. Xenophrys major Major‟s Diplok 7.5 cm Among dried leaves 8 (Boulenger, 1908) Horned Toad Miksim not far from streams. Xenophrys Zunheboto‟s Diplok 8.5 cm Shaded forest 1 zunhebotoensis (Mathew Horned Toad Mikchak grounds.