Agriculture,
Journal Year:
2022,
Volume and Issue:
12(3), P. 389 - 389
Published: March 10, 2022
Bumblebees
are
important
pollinators
for
crops
and
wild
flowering
plants.
Various
pesticides
have
threatened
the
abundance
diversity
of
bumblebees.
In
addition
to
direct
sublethal
effects,
may
alter
gut
microbial
communities
bees.
Imidacloprid
flupyradifurone
insecticides
both
bind
nicotinic
acetylcholine
receptor.
However,
latter
was
assumed
be
harmless
honeybees
can
even
applied
crops.
this
study,
we
assessed
impacts
these
two
on
queenless
microcolonies
microbiota
Bombus
terrestris.
We
found
that
10
μg/L
imidacloprid
significantly
impeded
syrup
consumption,
postponed
egg-laying
period,
larvae,
pupae
development.
It
decreased
relative
bumblebee-specific
symbionts,
Apibacter
Lactobacillus
Firm-5.
On
contrary,
did
not
reduce
block
larvae
development
in
Although
no
significant
phenotypes
were
observed,
PICRUST
revealed
suppressed
pathways,
involving
carbohydrate
metabolism,
nucleotide
translation,
membrane
transport.
Our
findings
suggest
appropriate
use
new
pesticide
considered
safe
bumblebees,
but
underlying
mechanism
warrants
further
investigation.
Ecological Indicators,
Journal Year:
2021,
Volume and Issue:
134, P. 108457 - 108457
Published: Dec. 16, 2021
Monitoring
the
environment
for
pollution,
pesticides,
and
pathogens
is
crucial
protecting
human,
agriculture,
overall
ecosystem
health.
Diverse
strategies
ranging
from
physical
sensors
to
sentinel
species
have
been
used
environmental
monitoring.
The
European
honey
bee,
Apis
mellifera,
a
globally
managed
pollinator
that
can
serve
as
continuous
biomonitoring
species.
During
foraging,
bees
are
exposed
contaminants
carry
them
their
hives
where
they
be
detected
quantified.
Although
individual
vulnerable
stressors,
bee
colony
whole
more
resilient
accumulate
or
respond
without
collapsing.
This
allows
long-term
monitoring
of
map
in
geographical
area
study
ecotoxicology
gradients
over
space
time.
In
this
paper,
we
review
demonstrated
proposed
uses
We
focus
our
discussion
on
heavy
metals,
air
pollutants,
plant
hive
materials
including
honey,
wax,
stored
pollen.
present
use
gene
expression,
microbiome
profiling,
other
high-throughput
methodologies
dose-dependent
exposure
increase
detection
sensitivity;
example,
pollen
analysis
with
next
generation
sequencing
reveal
presence
viruses,
fungi,
invasive
earlier
than
traditional
methods.
Finally,
discuss
opportunities
using
monitor
emerging
threats
such
climate
change
antimicrobial
resistance.
narrative
highlights
versatility
potential
utility
PLoS Genetics,
Journal Year:
2022,
Volume and Issue:
18(1), P. e1009920 - e1009920
Published: Jan. 19, 2022
Insect
nicotinic
acetylcholine
receptors
(nAChRs)
are
pentameric
ligand-gated
ion
channels
mainly
expressed
in
the
central
nervous
system
of
insects.
They
directed
targets
many
insecticides,
including
neonicotinoids,
which
most
widely
used
insecticides
world.
However,
development
resistance
pests
and
negative
impacts
on
bee
pollinators
affect
application
have
created
a
demand
for
alternatives.
Thus,
it
is
very
important
to
understand
mode
action
these
not
fully
understood
at
molecular
level.
In
this
study,
we
systematically
examined
susceptibility
ten
Drosophila
melanogaster
nAChR
subunit
mutants
eleven
acting
nAChRs.
Our
results
showed
that
there
several
subtypes
nAChRs
with
distinct
compositions
responsible
toxicity
different
insecticides.
At
least
three
them
major
seven
structurally
similar
neonicotinoids
vivo.
Moreover,
spinosyns
may
act
exclusively
α6
homomeric
pentamers
but
any
other
Behavioral
assays
using
thermogenetic
tools
further
confirmed
bioassay
supported
idea
receptor
activation
rather
than
inhibition
leads
insecticidal
effects
neonicotinoids.
The
present
findings
reveal
native
interactions
various
implications
management
novel
targeting
channels.
Nature Ecology & Evolution,
Journal Year:
2023,
Volume and Issue:
7(4), P. 547 - 556
Published: Feb. 27, 2023
Widespread
contamination
of
ecosystems
with
pesticides
threatens
non-target
organisms.
However,
the
extent
to
which
life-history
traits
affect
pesticide
exposure
and
resulting
risk
in
different
landscape
contexts
remains
poorly
understood.
We
address
this
for
bees
across
an
agricultural
land-use
gradient
based
on
assays
pollen
nectar
collected
by
Apis
mellifera,
Bombus
terrestris
Osmia
bicornis,
representing
extensive,
intermediate
limited
foraging
traits.
found
that
extensive
foragers
(A.
mellifera)
experienced
highest
risk-additive
toxicity-weighted
concentrations.
only
(B.
terrestris)
(O.
bicornis)
responded
context-experiencing
lower
less
land.
Pesticide
correlated
among
bee
species
between
food
sources
was
greatest
A.
mellifera-collected
pollen-useful
information
future
postapproval
monitoring.
provide
trait-
landscape-dependent
occurrence,
concentration
identity
encounter
estimate
risk,
is
necessary
more
realistic
assessment
essential
tracking
policy
goals
reduce
risk.
Frontiers in Insect Science,
Journal Year:
2022,
Volume and Issue:
1
Published: Jan. 25, 2022
Honeybees
and
wild
bees
are
among
the
most
important
pollinators
of
both
cultivated
landscapes.
In
recent
years,
however,
a
significant
decline
in
these
has
been
recorded.
This
decrease
can
have
many
causes
including
heavy
use
biocidal
plant
protection
products
agriculture.
The
frequent
residues
bee
originate
from
fungicides,
while
neonicotinoids
and,
to
lesser
extent,
pyrethroids
popular
insecticides
detected
products.
There
is
abundant
evidence
toxic
side
effects
on
honeybees
produced
by
neonicotinoids,
but
only
few
studies
investigated
because
they
generally
regarded
as
not
being
harmful
for
bees.
field,
variety
substances
taken
up
mixtures
their
combinations
be
lethal
pollinators,
depending
specific
group
insecticide
or
fungicide.
review
discusses
different
major
fungicide
classes
Fungicides
inhibiting
sterol
biosynthesis
pathway
strongly
increase
toxicity
pyrethroids.
Other
contrast,
do
appear
enhance
when
combined
with
neonicotinoid
pyrethroid
insecticides.
But
knowledge
possible
interactions
fungicides
poor,
particularly
bees,
emphasizing
need
further
insecticide-fungicide
Proceedings of the Royal Society B Biological Sciences,
Journal Year:
2024,
Volume and Issue:
291(2019)
Published: March 20, 2024
Mounting
evidence
supporting
the
negative
impacts
of
exposure
to
neonicotinoids
on
bees
has
prompted
registration
novel
‘bee-friendly’
insecticides
for
agricultural
use.
Flupyradifurone
(FPF)
is
a
butenolide
insecticide
that
shares
same
mode
action
as
and
been
assessed
be
‘practically
non-toxic
adult
honeybees'
using
current
risk
assessment
procedures.
However,
these
assessments
overlook
some
routes
specific
wild
bees,
such
contact
with
residues
in
soil
ground-nesters.
Co-exposure
other
pesticides
may
also
lead
detrimental
synergistic
effects.
In
fully
crossed
experiment,
we
possible
lethal
sublethal
effects
chronic
two
used
Cucurbita
crops,
Sivanto
Prime
fungicide
Quadris
Top
(azoxystrobin
difenoconazole),
alone
or
combined,
solitary
ground-nesting
squash
(
Xenoglossa
pruinosa
).
Squash
exposed
collected
less
pollen
per
flower
visit,
while
Sivanto-exposed
produced
larger
offspring.
Pesticide
co-exposure
induced
hyperactivity
female
relative
both
control
single
pesticide
exposure,
reduced
number
emerging
offspring
nest
compared
individual
treatments.
This
study
demonstrates
‘low-toxicity’
can
adversely
affect
under
field-realistic
combination.
