| 词条 | Assam roofed turtle |
| 释义 |
| name = Assam roofed turtle | image = kachugasylhetensis.jpg | status = EN | status_system = IUCN2.3 | status_ref = [1] | genus = Pangshura | species = sylhetensis | authority = Jerdon, 1870 | synonyms =
| synonyms_ref = [2] | range_map = | range_map_caption = }} The Assam roofed turtle (Pangshura sylhetensis), also known as Sylhet roofed turtle, is a species of the turtle family Geoemydidae found in the Brahmaputra-Meghna drainage in India (Assam) and parts of eastern Bangladesh. It was formerly placed in the genus Batagur and defunct genus Kachuga. DescriptionThe species has a triangular and elevated carapace with a prominent spiked keel and strongly serrated marginal plates. The carapace is olive-brown in color, with a lighter (yellowish to beige) keel. The head is small and has a weakly hooked upper jaw; a narrow pink stripe runs from the back of each eye to the middle of the back of the head. Adults may attain a maximum length of 20.5 cm,[3] although body sizes of 16 cm are more common.[4][3] The species' local names include "Dura Kaso" (দূৰা কাছ) in Assamese, "Śileṭi Kaiṭṭa" (সিলেটি কাইট্টা), "Śileṭi Kori Kaiṭṭa" (সিলেটি কড়ি কাইট্টা), "Kãṭa Kachim" (কাঁটা কাছিম) in Bengali, and "Siloṭi Xaṭua" (ছিলটি কাটুআ/ꠍꠤꠟꠐꠤ ꠇꠣꠐꠥꠀ) in Sylheti.[4] Distribution and habitatThe species occurs in the north-eastern & south-eastern parts of Bangladesh, in India (Assam) and possibly in Bhutan. It is found in terrestrial and freshwater habitats in areas with upland tropical moist forest, and fast-flowing streams and perhaps also small rivers. Oxbow lakes may also be inhabited, but shell morphology suggests an adaptation to fast-flowing waters.[4] EcologyThe species is amphibian. In the cooler months of the dry season, from December to February, it basks during most of the day; individuals living in cooler hill-streams may do so year round. The turtle is shy and never basks on river banks, but only on emergent logs or rocks. At the slightest disturbance, it will dive quickly to the middle of the river, hiding between rocks. Juveniles often flee into accumulations of dead leaves for camouflage and remain motionless.[4] ReproductionAssam roofed turtles nest between late October and February, corresponding with the cool, dry season, and produce clutches of 6–12 eggs. Hatchlings appear mainly between March and April, at the beginning of the Southeast Monsoons.[4] ConservationThe Assam roofed turtle is a rare species known only from a few individuals; it is believed to have one of the narrowest distributions of any south Asian geoemydid. It is exploited for its meat and eggs for local consumption and may also enter the pet trade. Habitat destruction by logging and incidental capture in fishing gear are also thought to present threats. The species is currently classified as Endangered (EN) by the IUCN.[1][4] References1. ^1 {{Cite journal | author = Asian Turtle Trade Working Group | title = Pangshura sylhetensis | journal = The IUCN Red List of Threatened Species | volume = 2000 | page = e.T10950A97374808 | publisher = IUCN | date = 2000 | url = http://www.iucnredlist.org/details/10950/0 | doi = 10.2305/IUCN.UK.2000.RLTS.T10950A3229978.en | access-date = 13 January 2018}} 2. ^{{Cite journal|journal=Vertebrate Zoology |title=Checklist of Chelonians of the World |year=2007 |author=Fritz Uwe |author2=Peter Havaš |volume=57 |issue=2 |pages=239 |issn=1864-5755 |url=http://www.cnah.org/pdf_files/851.pdf |archiveurl=https://www.webcitation.org/5v20ztMND?url=http://www.cnah.org/pdf_files/851.pdf |archivedate=2010-12-17 |accessdate=29 May 2012 |deadurl=yes |df= }} 3. ^1 http://www.ijpaz.com/zoology/comparative-morphometry-and-biogeography-of-the-freshwater-turtles-of-genus-pangshura-testudines-geoemydidae-pangshura.pdf 4. ^1 2 3 4 5 {{cite book|chapter=Pangshura sylhetensis Jerdon 1870 – Assam Roofed Turtle|title=Conservation Biology of Freshwater Turtles and Tortoises: A Compilation Project of the IUCN/ SSC Tortoise and Freshwater Turtle Specialist Group|series=Chelonian Research Monographs|volume=5|last1=Das|first1=I.|last2=Sengupta|first2=S.|last3=Praschag|first3=P.|editor=Rhodin, A.G.J. |editor2=Pritchard, P.C.H. |editor3=van Dijk, P.P. |editor4=Saumure, R.A. |editor5=Buhlmann, K.A. |editor6=Iverson, J.B. |editor7=Mittermeier, R.A.|doi=10.3854/crm.5.046.sylhetensis.v1.2010|pages=046.1–046.6}} Further reading
External links{{Commons category|Pangshura sylhetensis}}
2 : Pangshura|Reptiles of India |
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