Live fast, diversify non-adaptively: evolutionary diversification of exceptionally short-lived annual killifishes.

ABSTRACT:

Background

Adaptive radiations are triggered by ecological opportunity - the access to novel niche domains with abundant available resources that facilitate the formation of new ecologically divergent species. Therefore, as new species saturate niche space, clades experience a diversity-dependent slowdown of diversification over time. At the other extreme of the radiation continuum, non-adaptively radiating lineages undergo diversification with minimal niche differentiation when 'spatial opportunity' (i.e. areas with suitable 'ancestral' ecological conditions) is available. Traditionally, most research has focused on adaptive radiations, while empirical studies on non-adaptive radiations remain lagging behind. A prolific clade of African fish with extremely short lifespan (Nothobra

SUBMITTER: Lambert JW 

PROVIDER: S-EPMC6327596 | biostudies-literature | 2019 Jan

REPOSITORIES: biostudies-literature