▪ Abstract This review focuses on five key evolutionary issues pertaining to animal cognition,
defined as the neuronal processes concerned with the acquisition, retention, and use of …

Divergent natural selection has been shown to promote speciation in a wide range of taxa.
For example, adaptation to different ecological environments, via divergent selection, can …

In Alien Species and Evolution, biologist George W. Cox reviews and synthesizes emerging
information on the evolutionary changes that occur in plants, animals, and microbial …

▪ Abstract Hopperburn is a noncontagious disease of plants caused by the direct feeding
damage of certain leafhoppers and planthoppers. Although long studied, especially with …

Theoretical models suggest that resource competition can lead to the adaptive splitting of
consumer populations into diverging lineages, that is, to adaptive diversification. In general …

Across different taxa, networks of mutualistic or antagonistic interactions show consistent
architecture. Most networks are modular, with modules being distinct species subsets …

Host range evolution is a central issue for pest management, particularly for invasive
species of agricultural importance. The invasive tomato leaf miner, Tuta absoluta Meyrick …

Coevolutionary studies on plants and plant‐feeding insects have significantly improved our
understanding of the role of niche shifts in the generation of new species. Evolving plant …

Buchnera are maternally transmitted bacterial endosymbionts that synthesize amino acids
that are limiting in the diet of their aphid hosts. Previous studies demonstrated accelerated …

Habitat choice plays a critical role in the processes of host range evolution, specialization,
and ecological speciation. Pea aphid, Acyrthosiphon pisum, populations from alfalfa and red …