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Séverin HATT
PhD student
Functional & Evolutionary Entomology
10/07/2013
12/03/2015
31/08/2008
17/07/2014
“Some epidemiological studies allowed to identify relations between the occurrence of some diseases and exposition to pesticides”
“Risings of significant risks for various pathologies have been linked to exposure to pesticides”
2013
Biological
pest control
Alternative food Nectar
Pollen
Preys
Shelter Less disturbed
Less spraid
Species diversed
And if wildflowers supported pests ?
17 wildflower species
April June 2014
27 m 8 m
15
0 m
N
25
m
13 m
Wildflower strips Oilseed rape
Yellow pan trap
Emptied and refilled once a week
Anova (P<0.05)
Meligethes spp.
Ceutorhynchus spp.
Psylliodes chrysocephalla
Meligethes spp.
1st generation pupation 2nd generation
0
5
10
15
20
25
30
35
Mea
n p
er t
rap
**
**
**
***
*** ***
Anova (P<0.05)
0
500
1000
1500
2000
2500
3000
Wildflower strips
Oilseed rape
104 000 indv. trapped
0
10
20
30
40
50
60
70
Mea
n p
er t
rap
0
100
200
300
400
500
600
Wildflower strips
Oilseed rape
Anova (P<0.05) Ceutorhynchus spp.
** *** *** *
*
***
***
***
***
Rippening stage of oilseed rape
35 000 indv. trapped
Psylliodes chrysocephalla
Very few adults were trapped
Usually occured in automn
128 indv. trapped
Crops remained more attractive
than wildflowers at adult peaks
Pest populations remained low in
flower strips (no Brassicae sp.)
Biological pest control ?
[email protected] orbi.ulg.ac.be
With the collaboration of
Roel Uyttenbroeck
Thomas Mendes Lopes
Aman Paul
Dr. Sabine Danthine
Pr. Bernard Bodson
Dr. Julien Piqueray
Dr. Arnaud Monty
Pr. Frédéric Francis
