Introduction
The Biology of Vespa velutina Invasion
Co-production of Environmental Knowledge and the Management of V. velutina
Objectives
Material and Methods
Area of Study
Methodology
Nest data collection
Year | Hornet activities | Nests | Nest density (n/km2) | Removal efficiency (%) | Activity efficiency | ||
---|---|---|---|---|---|---|---|
Removed | Not removed | Total | |||||
2016 | 1067 | 454 | 59 | 513 | 11.6 | 88.5 | 2.1 |
2017 | 1059 | 699 | 58 | 757 | 17.1 | 92.3 | 1.4 |
2018 | 840 | 631 | 53 | 684 | 15.4 | 92.3 | 1.2 |
2019 | 656 | 450 | 86 | 536 | 12.1 | 84 | 1.2 |
Total | 3622 | 2234 | 256 | 2490 |
Citizen Survey
Interviews with ECP-Oleiros Unit Personnel
Data Analysis
Results
Nest Removal Activities
Community Engagement in the Management of V. velutina
Answer | Reason or method | % | |
---|---|---|---|
a) Call to emergency services | Call for nest (69.8%) | Management | 75.0 |
Fear | 23.3 | ||
Other | 1.7 | ||
Call for nest or hornet (15.7%) | Management | 22.2 | |
Fear | 63.0 | ||
Disinformation | 7.4 | ||
Other | 7.4 | ||
Do not call (14%) | Unconcern | 55.2 | |
Self-management | 37.5 | ||
Other | 77.3 | ||
Call for hornet (0.6%) | Fear | 100.0 | |
b) Participation in control | No (63.4%) | No opportunity or know-how | 95.6 |
Unconcern | 16.7 | ||
Fear | 19.4 | ||
Yes (36.6%) | Management | 76.4 | |
Fear | 28.6 | ||
Economical reasons | 33.3 | ||
Traps | 63.5 | ||
Nest removal | 42.9 |
Answer | Media | % |
---|---|---|
Sufficiently informed (55.4%) | TV | 33.7 |
Web & social media | 45.7 | |
Dissemination | 28.3 | |
Press | 40.2 | |
Local knowledge | 14.1 | |
Insufficiently informed (44.6%) | TV | 50 |
Web & social media | 33.8 | |
Dissemination | 17.6 | |
Press | 35.1 | |
Local knowledge | 21.6 |
Practitioners’ Management Practices and Interaction with the Local Population
Cost | Nest type | Access | Method | Time | Distance | Cost (€) |
---|---|---|---|---|---|---|
< 100€ | Embryonic | Easy | Manual | Day | Short | 37.2 |
Easy | Pole | Day | Short | 57.6 | ||
Easy | Fire ladder | Night | Short | 84.9 | ||
>100€ | Mature | Difficult | Fire ladder | Night | Long | 102.4 |
Easy | Pole | Day | Long | 114.9 | ||
Difficult | Manual | Night | Short | 170.5 | ||
Easy | Pole | Night | Short | 202.5 | ||
Difficult | Pole | Night | Long | 227.3 |