中国跳鼠总科物种系统发育与分布格局

中国分布有跳鼠总科(Dipodoidea)动物3科12属22种,是世界上跳鼠总科物种丰富度最高的国家之一.近年来,随着新种的发现和分类地位的修正,我国跳鼠总科物种的系统发育关系和分布格局也亟待更新.本文通过GenBank下载12个特定基因,串联构建基因矩阵,以贝叶斯法和最大似然法重建22个物种的系统发育树,明确了我国跳...

Phylogeny and distribution patterns of Dipodoidea in China

There are 22 species representing 12 genera and 3 families of Dipodoidea in China,which is one of the countries with the most species richness of Dipodoidea worldwide.Given the recent discovery of new species and the changes in taxonomic status,the phylogeny and species distribution patterns of Dipodoidea in China need to be updated.In this paper,we used Bayesian inferences and maximum likelihood methods to reconstruct the phylogenetic tree of Dipodoidea in China with 12 concatenated genes downloaded from GenBank.In addition,598 georeferenced points for 21 species (except Chimaerodipus auritus) and 10 environmental variables were used to generate species distribution models (SDM) in Maxent.The results showed that areas with higher species richness and habitat suitability of Dipodoidea in China were concentrated in Xinjiang and Inner Mongolia.Annual mean temperature,annual precipitation,temperature seasonality,precipitation seasonality,and solar radiation in August were the main influencing factors of SDM in different species.We clarified the phylogenetic relationships and the species distribution patterns of Dipodoidea in China,which serve as important baselines for future studies.