How ecological niche breadth evolves is central to adaptation and speciation and has been
a topic of perennial interest. Niche breadth evolution research has occurred within …

Cryptic genetic variation (CGV) is invisible under normal conditions, but it can fuel evolution
when circumstances change. In theory, CGV can represent a massive cache of adaptive …

Over the past decade, advances in both molecular developmental biology and evolutionary
ecology have made possible a new understanding of organisms as dynamic systems …

Most empirical and theoretical studies of resource use and population dynamics treat
conspecific individuals as ecologically equivalent. This simplification is only justified if …

In general, individuals who survive to reproduce have genotypes that work relatively well
under local conditions. Migrating or dispersing offspring elsewhere is likely to decrease an …

Environmental heterogeneity may be a general explanation for both the quantity of genetic
variation in populations and the ecological niche width of individuals. To evaluate this …

Genetic variability in quantitative traits can change as a direct response to the environmental
conditions in which they are expressed. Consequently, similar selection in different …

The study of speciation has become one of the most active areas of evolutionary biology,
and substantial progress has been made in documenting and understanding phenomena …

ABSTRACT A species' range limits may shift in space either because of changes in
ecological factors (eg climate, the abundances of interacting species) or because the traits …

Stressful environmental conditions can be defined as those that lead to a sharp reduction in
fitness in populations. That is, when changed environmental conditions cause a drastic …