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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 Margarya melanioides ： ウィキペディア英語版 Margarya melanioides ''Margarya melanioides'' is a species of large operculate freshwater snail, an aquatic gastropod mollusk in the family Viviparidae, the river snails. ''Margarya melanioides'' is the type species of the genus ''Margarya''.〔〔Du L., Yang J., von Rintelen T., Chen X. & Aldridge D. (2013). "Molecular phylogenetic evidence that the Chinese viviparid genus ''Margarya'' (Gastropoda: Viviparidae) is polyphyletic". ''Chinese Science Bulletin'' 58(18): 2154-2162. 〕 == Distribution == The distribution of ''Margarya melanioides'' includes Dian Lake, Erhai Lake, Jianhu Lake, Xihu Lake, and Cibi Lake in Yunnan Province, China.〔〔 Former records in Daduitai Lake and Xingyun Lake are considered as a result of the mix-up of species name.〔 An average population density was 36 individuals per square meter in Dianchi Lake in 1940s,〔 0.7 individuals per square meter in 1990s〔 and 0.068 individuals per square meter in Dianchi Lake in 2012.〔 According to the population ecology research by Song et al. (2013),〔 the population of will collapse in the Dian Lake in 2015.〔 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「Margarya melanioides」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.