© 2014 East Devon Beekeepers
A Branch of the Devon
UK Registered Charity No. 270675
Queen marking colour for 2017 - YELLOW
Due to the possible arrival of the Asian hornet in the East Devon area in the coming year a Hornet workshop was held to bring members up to date with the latest thinking on what they can do to help their bees survive the new threat.
The NBU advocate putting up monitoring traps in late February to trap over-wintering queen hornets. At other times of the year the traps are used to reduce worker hornet numbers and ease the pressure on bees.
John Badley started off with a short resumé of the key features of the monitoring traps (see slides) followed by a quick demonstration from Colin Osborne on constructing the traps. Participants were then let loose to make their own traps.
After a break for tea and cakes Richard Simpson spoke about suitable bait for the hornet traps. In the spring the emerging queens will be looking to increase their energy stores so sweet baits are appropriate then.
Later, the worker hornets will be looking for protein to feed their brood so added fish and other proteins will make for more efficient baits. Details are given on the slides.
Key Features of a Monitoring Trap
Roof to stop rain filling trap.
9mm hole in cap.
Allows Asian hornet to
enter but not European
5mm escape hole,
Mesh to stop drowning.
Base removable to
Asian Hornet Baits
Summer & Autumn: sweet + protein (fish or meat)
Asian Hornet Baits
Recipes (from the internet)
Recipes with honey? may not be a good idea as bees may be attracted. However, baits that have fermented or contain vinegar/acetic acid are not attractive to bees. So if using honey, monitor for inadvertent capture or add cider vinegar.
A dose-response experiment carried out in France showed that funnel traps captured significantly more hornets as the concentration of an apple juice bait was increased. 50% or higher was most effective with a dose level of 200 ml per trap.
An Asian Hornet update containing their latest thinking on trap design, baits and procedures is due out shortly.