The species concept is the cornerstone of biodiversity science, and any paradigm shift in the
delimitation of species affects many research fields. Many biologists now are embracing a …

In vertebrates and invertebrates, morphological and functional features of gastrointestinal
(GI) tracts generally reflect food chemistry, such as content of carbohydrates, proteins, fats …

Humans have dramatic, diverse and far-reaching influences on the evolution of other
organisms. Numerous examples of this human-induced contemporary evolution have been …

In 2008, a Gallup poll showed that 44 percent of Americans believed God had created man
in his present form within the last 10,000 years. In a Pew Forum poll in the same year, 42 …

The nutritional diversity of resources can affect the adaptive evolution of consumer
metabolism and consumer diversification. The omega‐3 long‐chain polyunsaturated fatty …

We integrate climatic niche models and dated phylogenies to characterize the evolution of
climatic niches in Oenothera sections Anogra and Kleinia (Onagraceae), and from that we …

Climatic conditions changing over time and space shape the evolution of organisms at
multiple levels, including temperate lizards in the family Lacertidae. Here we reconstruct a …

Eating is a risky affair. All animals have to offset risks of feeding such as exposure to plant
toxins, increased vulnerability to predation, or conspecific aggression with a food's energetic …

Herbivory is a key innovation in insects, yet has only evolved in one-third of living orders.
The evolution of herbivory likely involves major behavioral changes mediated by remodeling …

In The Origin of Species, Darwin proposed his principle of divergence of character (a
process now termed “character displacement”) to explain how new species arise and why …