Saito Takumi, Hirano Takahiro, Ye Bin, Prozorova Larisa, Shovon Mohammad Shariar, Do Tu Van, Kimura Kazuki, Surenkhorloo Purevdorj, Kameda Yuichi, Morii Yuta, Fukuda Hiroshi, Chiba Satoshi
Graduate School of Life Science Tohoku University Sendai Japan.
Department of Biology Faculty of Science Toho University Funabashi Japan.
Ecol Evol. 2021 Dec 17;11(24):18446-18459. doi: 10.1002/ece3.8434. eCollection 2021 Dec.
To clarify the effect of niche conservatism on evolutionary history, we focused on freshwater snails, which have different ecological and phylogenetic properties from previously tested taxa. We conducted a phylogenetic analysis using 750 lymnaeid individuals from 357 sites of eleven species. Then, we estimated the ancestral distribution using the geographic coordinates and colonization routes. In addition, a statistical test of the colonization distances in the latitudinal and longitudinal directions was performed. We also conducted ecological niche modeling for two widely distributed species using climatic data. Ancestral geographic reconstruction estimated the origin of the genus to be around the Indian subcontinental region and showed that latitudinal immigration distances were shorter than longitudinal immigration distances in the diversification process. Ecological niche models suggested that the current distribution was restricted by climate, with annual mean temperature and precipitation of the driest month as particularly strong factors. Niche conservatism to the climate can affect the diversification of freshwater snails.
为了阐明生态位保守性对进化历史的影响，我们聚焦于淡水蜗牛，它们具有与先前测试的分类群不同的生态和系统发育特性。我们对来自11个物种357个地点的750个椎实螺个体进行了系统发育分析。然后，我们利用地理坐标和定殖路线估计祖先分布。此外，还对纬度和经度方向的定殖距离进行了统计检验。我们还利用气候数据对两个广泛分布的物种进行了生态位建模。祖先地理重建估计该属的起源在印度次大陆地区附近，并表明在多样化过程中纬度迁移距离比经度迁移距离短。生态位模型表明，当前分布受到气候限制，年平均温度和最干燥月份的降水量是特别重要的因素。对气候的生态位保守性会影响淡水蜗牛的多样化。
