Influence of invasive pest and natural enemies on entomofauna formation in the Sochi region

Ludmila Bugaeva,Evgeniya Kashutina,Tatyna Ignateva,Y Tokarev,V Glupov

doi:10.1051/bioconf/20201800005

Abstract

The article describes the changes in local entomofauna in the Sochi region. Monitoring for several decades provides information about the spreading and density of invasive species established a long time ago and causing massive damage to agricultural plants during regular outbreaks. This group of species, which includes the Boisduval scale Diaspis boisduvalii, the Japanese planthopper Ricania japonica, and the fall webworm Hyphantria cunea, has had an enormous effect on local insects’ community for the last 50 years. What is most important is that this list of alien species continues to grow. Since the late 1990s, several invaders have been discovered in the Sochi region, including including the sycamore lace bug Corythucha ciliata, the leafhoppers Metcalfa pruinosa and Arboridia kakogawana, the brown marmorated stink bug Halyomorpha halys, the tortoise wax scale Ceroplastes japonicus and the woolly aphid Eriosoma lanigerum. The invasion process causes significant changes in the relationship between newly established populations of invasive pests and their natural enemies, which are partly used as biocontrol agents. So the impact of local and introduced entomophagous species on the fauna is also discussed.

Highlights

During recent decades the problem of biological invasion has become one of the most important in ecosystems research
The invasion process causes significant changes in the relationship between newly established populations of invasive pests and their natural enemies, which are partly used as biocontrol agents
One of the top-priority tasks in the study of invasive species is the monitoring of their development, which cannot be appropriately done without estimation of the influence of natural enemies on pest density

Summary

Introduction

During recent decades the problem of biological invasion has become one of the most important in ecosystems research. Since the late 1990s, several invaders have been discovered in the Sochi region, including including the sycamore lace bug Corythucha ciliata, the leafhoppers Metcalfa pruinosa and Arboridia kakogawana, the brown marmorated stink bug Halyomorpha halys, the tortoise wax scale Ceroplastes japonicus and the woolly aphid Eriosoma lanigerum. The main goal of our research is the monitoring of new invasive pests and their natural enemies in the Sochi region.

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Conclusion