/ collected worldwide: Microsatellite markers data and genetic cluster assignment.

is a cosmopolitan aphid species able to colonize hundreds of plant species from various families [1]. It causes serious damage to a wide range of crops and it is considered a major pest of cucurbits and cotton [2]. It reproduces clonally, by obligate parthenogenesis, on secondary hosts present throughout the year in the intertropical area.

, an Amazing Gene Conferring Resistance to Aphids and Viruses They Carry: From Molecular Structure to Field Effects.

We review half a century of research on resistance to from molecular to field levels. The gene is unique in conferring resistance to both and the viruses it transmits. This double phenotype is aphid clone-dependent and has been observed in 25 melon accessions, mostly from Asia.

Insight into the durability of plant resistance to aphids from a demo-genetic study of Aphis gossypii in melon crops.

Resistance breakdown has been observed following the deployment of plant cultivars resistant to pests. Assessing the durability of a resistance requires long-term experiments at least at a regional scale. We collected such data for melon resistance conferred by the Vat gene cluster to melon aphids.

Regular or covert sex defines two lineages and worldwide superclones within the leaf-curl plum aphid (Brachycaudus helichrysi, Kaltenbach).

Asexual reproduction occurs widely in plants and animals, particularly in insects. Aphid species usually reproduce by cyclic parthenogenesis, but many species include obligate asexual lineages. We recently showed that the leaf-curl plum aphid, Brachycaudus helichrysi, actually encompasses two lineages, B.

Evidence of superclones in Australian cotton aphid Aphis gossypii Glover (Aphididae: Hemiptera).

Background: Aphis gossypii is an important pest of cotton that has developed resistance to many chemicals used for its control. Any lack of understanding of its genetic structure, resistance status and host plant specialisation hampers effective management.

Rsults: Eight microsatellite markers were genotyped for a collection of Australian A.