Neonicotinoid Pesticides and Bees - The Food and Environment ...

Table 19 Overview of studies of the effects of sublethal and chronic exposure to acetamiprid and thiacloprid on non-Apis bees
Compound tested Study type Test dose Test Endpoints Results Notes Reference
species/subspecies
duration
Acetamiprid
Bombus terrestris
Thiacloprid
(Calypso 48% SC)
Bombus terrestris
Little detail
(tomato plants)
Lab (artificial
nestbox) /Oral
exposure/adults
Little detail
(maximum
label rate?)
From the
MFRC to
several
dilutions:
120 (MFRC),
60, 12, 1.2,
0.12 ppm and
12 ppb(in
sugar water)
12 ppm (1/10
MFRC) for
foraging
behaviour
Pollination
observed at
3, 8 and 12
d postreatment
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14d
Up to 11
weeks
(chronic
exposure)
(i) Pollination
rate
(ii) Hive status
Mortality, drone
production and
foraging
behavior
(i) Pollination slightly
reduced compared to
Flonicamid (Teppeki)
treatment
(ii) No detailed effects on
hives reported (‘generally
homogeneous’)
Without foraging
100% mortality at 120 ppm
after 11 weeks. Mortality at
to 60, 12, 1.2 and
0.12 ppm and 12 ppb was
78, 41, 39, 17 and 0%,
respectively
Chronic
LC50 = 18 ppm;
Total reproductive failure at
120 and 60ppm.
Significant effect at 12ppm
with reproduction reduced
by 36% relative to control.
EC50 = 12 ppm.
Very little detail
given. Comparison
of two treatments
rather than with
control
This study reports
the development of
a new bioassay to
assess the impact
of sublethal
concentrations on
the bumblebee
foraging behavior
under laboratory
conditions.
Fanigliulo et al
(2009)
Mommaerts et
al (2010)