The effect of selection history on extinction risk during severe environmental change

摘要: Environments rarely remain the same over time, and populations are therefore frequently at risk of going extinct when changes significant enough to reduce fitness. Although many studies have investigated what attributes new environments experiencing these will affect their probability extinct, limited work has been directed towards determining role population history on during severe environmental change. Here, we compare extinction with a selection in benign environment, one or two stressful environments. We exposed spores lines green alga Chlamydomonas reinhardtii from three different histories range changes. found that was higher for compared environment. This effect not due differences initial sizes. Finally, rates were highly repeatable within histories, indicating strong historical contingency risk. Hence, information can be used predict