Perceptions of stakeholders can influence who is included and excluded from environmental policy-making processes. Repertory grid technique is a qualitative method that captures how a person differentiates objects according to dimensions of similarity. Used in a qualitative way, repertory grids...

Cibdela janthina (Hymenoptera: Tenthredinidae) is a folivorous sawfly, native to Sumatra, that was introduced in the French island of La Réunion in the Mascarenes as a biological control agent of the giant bramble Rubus alceifolius (Rosaceae). It was released in 2008 and successfully controlled the ...

To reduce the number of seeds released by Hakea sericea after fires, two seed-feeding insects were introduced into South Africa from Australia in 1970: a seed-moth, C. autologa, the larvae of which destroy the seeds in mature fruits, and a seed-feeding weevil Erytenna consputa, the larvae of which...

This paper highlights the most promising potential biological control agents for S. campanulata, namely Paradibolia coerulea, Bunia pagnana and Colomerus spathodeae that were sampled during the surveys in Ghana, and presents the results of host-specificity testing for one of the agents. The surveys ...

Harmonia axyridis (Pallas) (Coleoptera: Coccinellidae) is an exotic ladybird, first recorded in South Africa in 2004, where it was introduced factitiously. In this study the seasonal occurrence of H. axiridis and other coccinellids were monitored in four vineyards and the adjacent windbreaks over...

The invasive and predatory harlequin lady beetle, Harmonia axyridis, has been introduced as a biological control agent to many agricultural areas worldwide and has now spread from agricultural to natural habitats where it threatens native arthropod biodiversity. The aim of this study was to...

A Chinese biotype of Lilioceris cheni Gressitt and Kimoto (Coleoptera: Chrysomelidae) is being mass reared and released in Florida for biological control of the invasive air potato vine, Dioscorea bulbifera L. (Dioscoreales). Another biotype from Nepal is under investigation for determining whether ...

By the late 20th century, a series of events or 'natural experiments', for example the depletion of apex predators, extreme eutrophication and blooms of invasive species, had suggested that the Black Sea could be considered as a large ecosystem 'laboratory'. The events resulted in regime shifts...

Invasive natural enemies are known to either strengthen or weaken the suppression of herbivorous arthropods. However, the impact of invasive species on the predation service provided by natural enemy diversity remains largely unexplored. Here, we tease apart the roles of invasive ants as providers...

Biological invasions have movement at the core of their success. However, due to difficulties in collecting data, medium- and long-distance dispersal of small insects has long been poorly understood and likely to be underestimated. The agricultural release of parasitic hymenoptera, a group of wasps ...