[{"@context":"http:\/\/schema.org\/","@type":"BlogPosting","@id":"https:\/\/wiki.edu.vn\/en\/wiki24\/boulengers-keelback-wikipedia\/#BlogPosting","mainEntityOfPage":"https:\/\/wiki.edu.vn\/en\/wiki24\/boulengers-keelback-wikipedia\/","headline":"Boulenger’s keelback – Wikipedia","name":"Boulenger’s keelback – Wikipedia","description":"From Wikipedia, the free encyclopedia Species of snake Boulenger’s keelback[2] (Fowlea asperrima), also known commonly as the Sri Lankan keelback,[1]","datePublished":"2022-08-11","dateModified":"2022-08-11","author":{"@type":"Person","@id":"https:\/\/wiki.edu.vn\/en\/wiki24\/author\/lordneo\/#Person","name":"lordneo","url":"https:\/\/wiki.edu.vn\/en\/wiki24\/author\/lordneo\/","image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/c9645c498c9701c88b89b8537773dd7c?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/c9645c498c9701c88b89b8537773dd7c?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"Enzyklop\u00e4die","logo":{"@type":"ImageObject","@id":"https:\/\/wiki.edu.vn\/wiki4\/wp-content\/uploads\/2023\/08\/download.jpg","url":"https:\/\/wiki.edu.vn\/wiki4\/wp-content\/uploads\/2023\/08\/download.jpg","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/en.wikipedia.org\/wiki\/Special:CentralAutoLogin\/start?type=1x1","url":"https:\/\/en.wikipedia.org\/wiki\/Special:CentralAutoLogin\/start?type=1x1","height":"1","width":"1"},"url":"https:\/\/wiki.edu.vn\/en\/wiki24\/boulengers-keelback-wikipedia\/","about":["Wiki"],"wordCount":3100,"articleBody":"From Wikipedia, the free encyclopediaSpecies of snakeBoulenger’s keelback[2] (Fowlea asperrima), also known commonly as the Sri Lankan keelback,[1] is a species of water snake in the family Colubridae. The species is endemic to Sri Lanka.[5][6][7][4]Table of ContentsEtymology[edit]Habitat[edit]Characteristics[edit]Scalation[edit]Behaviour[edit]Breeding[edit]Common names[edit]References[edit]External links[edit]Etymology[edit]The common name “Boulenger’s keelback” is in honour of Belgian-born British herpetologist George Albert Boulenger.[8]Habitat[edit]F. asperrima is found in Sri Lanka,[8][9][10] in both dry and wet climatic zones up to 1,000\u00a0m (3,300\u00a0ft) above mean sea level. It is abundant in waterways, such as flooded rice fields, ponds, lakes, marshes, rivers and streams.[2][6][11]Characteristics[edit]The body of F. asperrima is short and cylindrical, and has a clear neck and slightly pointed head. The eyes have rounded pupils, and the nostrils are narrow, directed slightly upwards. The tail is long. At hatching, it is 10\u00a0cm (3.9\u00a0in) long and grows to an adult length of 40\u201370\u00a0cm (16\u201328\u00a0in). The female is longer.[2][6][7]Scalation[edit]F. asperrima has one pair of internasals; the posterior parts are narrow. One loreal, preocular, postocular and three temporals are found. Of the 9 supralabials, 4 and 6 connect with the eye. Ventrals number 131\u2013146, and the undivided subcaudals are 73\u201393 in count. At midbody there are 19 rows of dorsal scales, which are strongly keeled and rough.[12][2][7][11][13]The dorsal body colour of F. asperrima is olive brown. The anterior half of the body  has 20\u201332 distinct large black spots or cross bars. The posterior body may lack them or may be in light-colored irregular shapes. The head is dark in color. Two black lines run diagonally from behind the eyes to the corners of the mouth. Ventrally, the body is white. F. asperrimus can be easily identified by dark spots or bars on the first half of the body and two dark lines behind the eyes.[2][6]Behaviour[edit]F. asperrima is oviparous, diurnal and nocturnal.[dubious  \u2013 discuss] In dry conditions during the summer, it undergoes aestivation. It is active in water bodies in search of its prey, which consist mainly of fishes and frogs. It is known to be very aggressive. When threatened, it attempts to bite, by flattening its head and neck as does the cobra. The bite may cause wounds. Also, it may release a noxious odor.[2][6]Breeding[edit]The gestation period of F. asperrima is 55\u201367 days. Females do not guard the clutches of eggs, but they stay close to the nest. They lay clutches of four to 30 eggs between September and October.[2][6][11]Common names[edit]References[edit]^ a b de Silva, A. & Wickramasinghe, L.J.M. (2021). “Fowlea asperrimus“. The IUCN Red List of Threatened Species. IUCN. 2021: e.T197191A123311972. Retrieved 15 January 2021.^ a b c d e f g h Boulenger, G.A. (1891). “Description of new oriental reptiles and batrachians”. Annals and Magazine of Natural History. Taylor and Francis, Ltd. London. 6: 279\u2013283.^ Smith, M.A. (1943). “3. Serpentes”. The Fauna of British India, Ceylon and Burma, Including the Whole of the Indo-Chinese Sub-Region. Reptilia and Amphibia. Taylor and Francis, Ltd. London. p.\u00a0583.^ a b Fowlea asperrima at the Reptarium.cz Reptile Database. Accessed 19 January 2016.^ Das, I. [in French] & De Silva, A. (2005). Photographic guide to snakes and other reptiles of Sri Lanka. New Holland Publishers. p.\u00a0144.^ a b c d e f g Suranjan Karunarathna, D. M. S. & Thasun Amarasinghe, A. A. (2011). “A Preliminary Survey of the Reptile Fauna in Nilgala Forest and its Vicinity, Monaragala District, Sri Lanka”. Taprobanica. 3 (2): 69\u201376. doi:10.47605\/tapro.v3i2.49.^ a b c Taylor, Edward H. (1950). “The snakes of Ceylon”. University of Kansas Science Bulletin. 33 (14): 519\u2013603. ISSN\u00a00022-8850.^ a b Beolens, Bo; Watkins, Michael & Grayson, Michael (2011). The Eponym Dictionary of Reptiles. Johns Hopkins University Press. pp.\u00a033\u201335. ISBN\u00a0978-1-4214-0135-5. LCCN\u00a01421401355.^ a b De Silva, A. (1998). Snakes of Sri Lanka: a checklist and an annotated bibliography. Dept. Wildlife Conservation\/GEF\/UNDP\/FAO, Colombo.^ Wall, Frank (1921). Ophidia Taprobanica or the Snakes of Ceylon. Colombo Mus. (H. R. Cottle, govt. printer), Colombo. p.\u00a0581.^ a b c Boulenger, G.A. (1893). Catalogue of the snakes in the British Museum.(Natural history) Vol. I. Taylor and Francis, London. p.\u00a0448.^ Vogel, G. & David, Patrick (2006). “On the taxonomy of the Xenochrophis piscator complex (Serpentes, Natricidae)” (PDF). Herpetologica Bonnensis. II: 241\u2013246.[permanent dead link]^ Janzen, P.; Klaas, P. & Ziesmann, S. (2007). “Sri Lankas Schlangenfauna”. Draco. 7 (30): 56\u201364.External links[edit]  "},{"@context":"http:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"https:\/\/wiki.edu.vn\/en\/wiki24\/#breadcrumbitem","name":"Enzyklop\u00e4die"}},{"@type":"ListItem","position":2,"item":{"@id":"https:\/\/wiki.edu.vn\/en\/wiki24\/boulengers-keelback-wikipedia\/#breadcrumbitem","name":"Boulenger’s keelback – Wikipedia"}}]}]