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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Leora's stream salamander ： ウィキペディア英語版 Leora's stream salamander The Leora's Stream Salamander or Ajolote (''Ambystoma leorae'') is a critically endangered species of mole salamander in the Ambystomatidae family. This species is endemic to the Sierra Nevada in central Mexico. It was historically restricted to six locations in the Iztaccihuatl-Popocatepetl National Park (IPNP) located on the border of the State of Mexico with Puebla. Long ago it disappeared from the heavily polluted Rio Frio where it was first found. A recent research rediscovered a new and relict locality of ''A. leorae'', possibly the last one (Sunny et al. 2014a). The new study reports that the critically endangered species persists in a single population on Mount Tlaloc, located adjacent to what may be one of the largest and densely urbanized area on earth. The salamanders, were found in two small streams (2 m wide, 6.5 m depth) with cold water temperature (12 to 15 °C), highly elevated oxygenation water level (78% dissolved oxygen) surrounded by small alpine grassland (''Muhlenbergia'' sp.) and mountain forest (''Pinus hartwegii'' and ''Abies religiosa''). The study show low genetic diversity but high average heterozygosity, and three genetic subpopulations were recognized in the restricted geographic range (Sunny et al. 2014a). ==Conservation status== Because of the species limited distribution, the clearance of the forest, and the pollution and consumption of the water by humans, it is classified by the IUCN as a critically endangered species (Shaffer et al. 2004) and as a threatened species by the Mexican government (SEMARNAT 2010). In the geographic distribution of the species, there are several threats that are modifying the ecosystem, including alteration of the stream to collect the water for human consumption, introduction of cattle, and the direct collection of specimens for traditional food (Sunny et al. 2014b). 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Leora's stream salamander」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.