Aphis fabae scop. En aanverwante soorten in Nederland

Viability and Fecundity of Alate Alienicolae of Aphis Fabae Scop . after Flights to Exhaustion

Alate alienicolae of approximately uniform size were obtained from healthy colonies of the same clone maintained in the laboratory at 18 ±5° C. on broad beans (Vicia faba L., var. Claudia Aquadulce). They were collected within \ hr. of the final ecdysis and kept for 24 hr. on young beans in the dark at 20° C. to complete their teneral development and become ready for flight (Taylor, 1957). The ...

Effect of petroleum-derived substances on life history traits of black bean aphid (Aphis fabae Scop.) and on the growth and chemical composition of broad bean

The aim of the study was to determine the effects of various petroleum-derived substances, namely petrol, diesel fuel and spent engine oil, on life history traits and population dynamics of the black bean aphid Aphis fabae Scop. and on growth and chemical composition of its host plant Vicia faba L. Each substance was tested separately, using two concentrations (9 g kg-1 and 18 g kg-1). The expe...

Levels of clonal mixing in the black bean aphid Aphis fabae, a facultative ant mutualist.

Aphids are a worldwide pest and an important model in ecology and evolution. Little is known, however, about the genetic structure of their colonies at a microgeographic level. For example, it remains largely unknown whether most species form monoclonal or polyclonal colonies. Here, we present the first detailed study on levels of clonal mixing in a nonsocial facultative ant mutualist, the blac...

Large interclone differences in melezitose secretion in the facultatively ant-tended black bean aphid Aphis fabae.

Many aphids are known to engage in a trophic mutualism with ants, whereby the aphids secrete sugary-rich honeydew which is collected by the ants for food, and the ants, in exchange, protect the aphids against natural enemies. Previous results, however, suggest that the production of some of the honeydew sugars, such as the ant-attractant trisaccharide melezitose, may induce an indirect cost to ...

Contrasting effects of necrotrophic and biotrophic plant pathogens on the aphid Aphis fabae