期刊
EVOLUTION
卷 71, 期 6, 页码 1719-1727出版社
OXFORD UNIV PRESS
DOI: 10.1111/evo.13249
关键词
Adaptive radiation; colonization history; fitness difference; niche difference
资金
- US NSF [DEB-1257858, DEB-1342754]
- British Ecological Society Research Grant [5174-6216]
- National Natural Science Foundation of China [31361123001]
- Division Of Environmental Biology
- Direct For Biological Sciences [1342754] Funding Source: National Science Foundation
Adaptive radiation is an important evolutionary process, through which a single ancestral lineage rapidly gives rise to multiple newly formed lineages that specialize in different niches. In the first-arrival hypothesis, David Lack emphasized the importance of species colonization history for adaptive radiation, suggesting that the earlier arrival of a diversifying species would allow it to radiate to a greater extent. Here, we report on the first rigorous experimental test of this hypothesis, using the rapidly evolving bacterium Pseudomonas fluorescens SBW25 and six different bacterial competitors. We show that the earlier arrival of P. fluorescens facilitated its diversification. Nevertheless, significant effects of colonization history, which led to alternative diversification trajectories, were observed only when the competitors shared similar niche and competitive fitness with P. fluorescens. These results highlight the important role of species colonization history, modified by their ecological differences, for adaptive radiation.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据