An organism's fitness depends strongly on its age and size at maturation. Although the
evolutionary forces acting on these critical life history traits have been heavily scrutinized …

Developmental and evolutionary processes underlying phenotypic variation frequently
target several traits simultaneously, thereby causing covariation, or integration, among …

The plastic nutritional foundations of growth and reproduction are crucial in mediating
animal (insect) life histories but remain largely unexplored. Here, we investigate how the …

The extent of interspecific gene flow and its consequences for the initiation, maintenance,
and breakdown of species barriers in natural systems remain poorly understood …

Phenomenological and behavioural studies have greatly advanced the study of natural
selection. Field studies of selection well appraise the natural situation, but is this also true for …

The black scavenger fly Sepsis thoracica exhibits polyphenic development resulting in
alternate small black and large amber male morphs. Although the behavior, ecology, and …

Nuptial gifts serve to increase donor fitness through a variety of pathways independent of
their effect on the recipient. Some nuptial gifts deliver benefits similar to those of antagonistic …

Many similar sepsid dung fly species coexist on European pastures, contradicting
conventional wisdom of niche theory and competitive exclusion. We hypothesized that …