Aphids engage in symbiotic associations with a diverse assemblage of heritable bacteria. In
addition to their obligate nutrient-provisioning symbiont, Buchnera aphidicola, aphids may …

The role of natural selection in speciation, first described by Darwin, has finally been widely
accepted. Yet, the nature and time course of the genetic changes that result in speciation …

This chapter looks at aphids from a taxonomist's viewpoint. It highlights some of the
problems of interpreting the observed variation within and between species, and discusses …

1. Bacterial symbionts play a prominent role in insect nutritional ecology by aiding in
digestion of food or providing nutrients that are limited or lacking in the diet. Thereby …

Aphids are among the major global pest groups, causing serious economic damage to many
food and commodity crops in most parts of the world. This revision and update of the well …

Symbiotic microbes have become increasingly recognized to mediate interactions between
natural enemies and their hosts. The ecologies of these symbioses, however, are poorly …

Bacteriophages are known to carry key virulence factors for pathogenic bacteria, but their
roles in symbiotic bacteria are less well understood. The heritable symbiont Hamiltonella …

In North America and Europe, the pea aphid (Acyrthosiphon pisum) encompasses
ecologically and genetically distinct host races, offering a model system for studies on …

Phylogeography is a young, vigorous and integrative field of study that uses genetic data to
understand the history of populations. This field has recently expanded into many areas of …

Our understanding of prokaryote–eukaryote symbioses as a source of evolutionary
innovation has been rapidly increased by the advent of genomics, which has made possible …