This is a preview. Log in through your library . Abstract Life-history models are based on the assumption that there is a trade-off between allocation to reproduction and allocation to other functions ...

Gynodioecy, the co-occurrence of female and hermaphroditic individuals within a population, is an important intermediate in the evolution of separate sexes. The first step, female maintenance, ...

Flowering forest plants like Geranium maculatum are in short supply in spring when queen bumble bees need them most, researchers report. Disclaimer: AAAS and EurekAlert! are not responsible for the ...