Transcript Exomite Apis - Agri

Exomite Apis™
• Varroa destructor – the honeybee mite
• A worldwide problem, established throughout
the UK since 1992
• Resistance found to synthetic chemical
treatments in 2001
• Notifiable disease
Exomite Apis™
• Varroa lifecycle
• Varroa spreads across colonies by:
– Swarming
– Robbing
– From flower foraging
Exomite Apis™
• Effects of Varroa on individual bees
– Malnourishment
– Limb deformity
– Reduced resistance to infections
• Effects of Varroa on colonies
– Slow replacement of new bees
– Colony collapse during autumn/winter
– Proliferation of otherwise harmless viruses,
eg.slow paralysis virus, deformed wing virus
Exomite Apis™
Exomite Apis™
• New system from Exosect using patented
electrostatic powder technology
• No need to remove hive roof
• No pesticides, powder contains essential oil
extract (Thymol), but uses 60% less thymol
than Apiguard
• No repellency or impact on colony
productivity
Exomite Apis™
• ‘Cassette’ dispenser station is placed on
the hive entrance
• Bees disseminate powder throughout
the hive
• Thymol infused into brood cells where
mites develop
• Powder causes excellent mite-drop from
adult bees
Exomite Apis™
• Exomite Targets mites with a 2treatment regime 12-16 days apart
Exomite Apis™
Treated hive showing powder distribution under fluorescent light
Exomite Apis™-Trial Programme 2003
• 39 hives in Hampshire with varying levels of
infestation
• Mite drop counts - Pre-treatment, 3, 9, 15 &
21 days after Exomite Apis treatment
• Apistan – 3 weeks post Exomite Apis
• Infestation categories at Pre-treatment stage
–
–
–
–
very low (0-20)
Low (20-40)
medium (40-150)
High (>150)
Exomite Apis™ Results
• Very Low level
Average daily mite
knockdown
Graph 1. Average daily knockdown of Varroa mite in hives with
very low infestation treated with EntoStat+20% thymol. (n=9)
12
10
8
6
4
2
0
Pretreat 27 days
Treatment 12 days
Treatment 9 days
Treatment
Apistan 21 days
Exomite Apis™ Results
• Low level
Graph 2. Average daily knockdown of Varroa mite in hives with low infestation treated
with EntoStat+20% thymol. (n=6)
Average daily mite
knockdown
14
12
10
8
6
4
2
0
Pretreat 27 days
Treatment 12 days
Treatment 9 days
Treatment
Apistan 21 days
Exomite Apis™ Results
• Medium level
Graph 3.Average daily knockdown of Varroa mite in hives with
medium infestation treated with EntoStat+20% thymol. (n=11)
Average daily mite
knockdown
25
20
15
10
5
0
Pretreat 27 days
Treatment 12 days
Treatment 9 days
Time(in day)
Apistan 21 days
Exomite Apis™ Results
• High level
Graph 4. Average daily knockdown of Varroa mites in hives with high
level of infestation treated with EntoStat+20% thymol. (n=9)
Average dail mite
knockdown
50
40
30
20
10
0
Pretreat 27 days
Treatment 12 days
Treatment 9 days
Time(in days)
Apistan 21 days
Exomite Apis™ Results
• Percentage Efficacy – all categories over 80%
– Daily Varroa knock down due to Apis compared to overall
Varroa knock down from Apis and Apistan
Graph 6. Average Efficacy ( Percentage Daily Mite Knock Down)
Hive Category
Overall
150+
40-150
20-40
0-20
0
10
20
30
40
50
Efficacy (% )
60
70
80
90
100
Exomite Apis™ Summary
• Natural non-invasive, non-disruptive system
• Contains essential oil extract & patented
electrostatic wax powder technology
• Uses over 60% less a.i. than nearest
competitor
• Thymol disseminated throughout hive & into
brood cells
• Powder causes excellent mite-drop from adult
bees
• Essential oil is approved by UKROFS