| 词条 | Langaha madagascariensis |
| 释义 |
| status = LC | status_system = IUCN3.1 | status_ref = [1] | image=Female Langaha madagascariensis.jpg | image_caption = Female L. madagascariensis | taxon = Langaha madagascariensis | authority = Bonnaterre, 1790 | synonyms = * Langaha nasuta Shaw, 1802
}}Langaha madagascariensis (formerly Langaha nasuta, commonly known as the Madagascar or Malagasy leaf-nosed snake) is a medium-sized highly cryptic arboreal species. It is endemic to Madagascar and found in deciduous dry forests and rain forests, often in vegetation 1.5 to 2 meters above the ground.[1][4] DescriptionMalagasy leaf-nosed snakes can grow up to 1 meter in length.[4] There is considerable sexual dimorphism within the species; the males are dorsally brown and ventrally yellow with a long tapering snout, while the females are mottled grey with a flattened, leaf shaped snout.[3] The function of their appendage is unknown, but obviously also serves as camouflage.[4] It is largely a sit-and-wait predator. It may show curious resting behaviour, hanging straight down from a branch. Prey items include arboreal and terrestrial lizards.[5] Leaf-nosed snakes are oviparous with clutch sizes ranging from 5 to 11 eggs.[4] Malagasy leaf-nosed snakes are generally calm and reluctant to bite unless provoked. Envenomation by the snake causes severe pain in humans, but is not deadly.[6] References1. ^1 {{IUCN2012.2| id = 172813| title = Leaf Nosed Snake| assessor = Raxworthy, C.J.| year = 2011| downloaded = 2 June 2013}} {{Commons category|Langaha madagascariensis}}2. ^The Reptile Database. www.reptile-database.org. 3. ^{{cite web |url=http://snakesarelong.blogspot.com/2013/02/malagasy-leaf-nosed-snakes.html |title=Malagasy Leaf-nosed Snakes |author=Andrew Durso |date=February 7, 2013 |work=Life is Short, but Snakes are Long |publisher= |accessdate=2 June 2013}} 4. ^1 2 3 {{cite book | last=Glaw | first=Frank |author2=Vences, Miguel | title=A Field Guide to Amphibians and Reptiles of Madagascar | edition=3rd | publisher=M. Vences & F. Glaw Verlags GbR | date=2007 | location=Köln | isbn=978-3-929449-03-7 }} 5. ^{{cite journal |last1=Tingle |first1=Jessica L. |year=2012 |title=Field Observations on the behavioral ecology of the Madagascan leaf-nosed snake, Langaha madagascariensis |journal=Herpetological Conservation and Biology |volume=7 |issue=3 |pages=442–448 |doi= |url=http://herpconbio.org/Volume_7/Issue_3/Tingle_2012.pdf }} 6. ^{{cite journal |last1=D'Cruze |first1=Neil C. |year=2008 |title=Envenomation by the Malagasy colubrid snake Langaha madagascariensis |journal=Journal of Venomous Animals and Toxins including Tropical Diseases |volume=14 |issue=3 |pages=546–551 |doi=10.1590/S1678-91992008000300014 |url=http://www.scielo.br/scielo.php?pid=S1678-91992008000300014&script=sci_arttext }} External links
5 : Colubrids|Endemic fauna of Madagascar|Reptiles of Madagascar|Venomous snakes|Reptiles described in 1790 |
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