Population genetics has come of age. Three important components have come together:
efficient techniques to examine informative segments of DNA, statistics to analyse DNA data …

▪ Abstract Oak gall wasps (Hymenoptera: Cynipidae, Cynipini) are characterized by
possession of complex cyclically parthenogenetic life cycles and the ability to induce a wide …

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 …

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 …

Microsatellite DNA loci have recently been adopted for many biological applications.
Comparative studies across a wide range of species has revealed many details of their …

Many theories attempt to explain why sexual reproduction has invaded life so thoroughly.
Some are plausible, but there remains a need for evolutionary biologists to identify the main …

In North America, the pea aphid Acyrthosiphon pisum encompasses ecologically and
genetically distinct host races that offer an ideal biological system for studies on sympatric …

The effects of habitat fragmentation on processes within and among populations are
important for conservation management. Despite a broad spectrum of lifestyles and the …

Most organisms represent specialized forms that arose as a result of natural selection and
genetic drift to occupy distinct ecological niches. In animals, this process of specialization …

Cyclical parthenogens, including aphids, are attractive models for comparing the genetic
outcomes of sexual and asexual reproduction, which determine their respective evolutionary …