Abstract
The
European
honey
bee,
Apis
mellifera
,
serves
as
the
principle
managed
pollinator
species
globally.
In
recent
decades,
bee
populations
have
been
facing
serious
health
threats
from
combined
biotic
and
abiotic
stressors,
including
diseases,
limited
nutrition,
agrochemical
exposure.
Understanding
molecular
mechanisms
underlying
xenobiotic
adaptation
of
A.
is
critical,
considering
its
extensive
exposure
to
phytochemicals
agrochemicals
present
in
flowers,
propolis,
hives,
environment.
this
study,
we
conducted
a
comprehensive
structural
functional
characterization
AmGSTD1,
delta
class
glutathione
S-transferase
(GST)
enzyme,
unravel
roles
detoxification
antioxidative
stress
responses.
Significantly,
determined
3D
structure
GST
using
protein
crystallography
for
first
time,
providing
new
insights
into
structure.
Our
investigations
revealed
that
AmGSTD1
efficiently
metabolizes
model
substrates,
1-chloro-2,4-dinitrobenzene
(CDNB),
p-nitrophenyl
acetate
(PNA),
phenylethyl
isothiocyanate
(PEITC),
propyl
(PITC),
oxidation
byproduct
4-hydroxynonenal
(4-HNE).
Moreover,
discovered
exhibits
binding
affinity
with
fluorophore
8-Anilinonaphthalene-1-sulfonic
acid
(ANS),
which
can
be
inhibited
various
herbicides,
fungicides,
insecticides,
their
metabolites.
These
findings
highlight
potential
contribution
safeguarding
against
metabolites,
while
also
mitigating
oxidative
resulting
these
substances.
Insects,
Год журнала:
2024,
Номер
15(6), С. 440 - 440
Опубликована: Июнь 11, 2024
Fruit
flies
cause
substantial
economic
damage,
and
their
management
relies
primarily
on
chemical
insecticides.
However,
pesticide
resistance
has
been
reported
in
several
fruit
fly
species,
the
mitigation
of
which
is
crucial
to
enhancing
control.
Here,
we
assess
toxicity
a
novel
insecticide
(fluralaner)
common
(dinotefuran)
against
three
Bactrocera
dorsalis
(Hendel),
cucurbitae
(Coquillett),
tau
(Walker).
Both
pesticides
exhibit
robust
lethal
sublethal
effects
all
with
fluralaner
being
more
potent.
Fluralaner
dinotefuran
suppress
reproductive
capacities
survival
rates
flies.
at
50%
concentration,
stimulates
capacity
B.
rate
tau.
also
causes
significant
transgenerational
effects,
impacting
offspring
hatching
reducing
proportion
female
offspring.
Thus,
both
high
potential
for
controlling
application
should
be
tailored
according
species
variations
diverse
they
may
induce.
Collectively,
findings
this
study
outline
two
insecticides
flies,
helping
optimize
ensure
effective
resistance.
European Journal of Neuroscience,
Год журнала:
2024,
Номер
60(8), С. 5927 - 5948
Опубликована: Сен. 11, 2024
Abstract
Neonicotinoids
represent
over
a
quarter
of
the
global
pesticide
market.
Research
on
their
environmental
impact
has
revealed
adverse
effect
cognitive
functions
pollinators,
in
particular
bees.
Cognitive
impairments,
mostly
by
behavioural
studies,
are
phenotypic
expression
an
alteration
underlying
neural
circuits,
matter
deserving
greater
attention.
Here,
we
reviewed
studies
field‐relevant
doses
neonicotinoids
neurophysiology
and
neurodevelopment
In
particular,
focus
olfactory
system
as
much
knowledge
been
gained
different
brain
areas
that
participate
odour
processing.
Recent
have
detrimental
effects
at
multiple
levels
system,
including
modulation
odorant‐induced
activity
sensory
neurons,
diminished
responses
antennal
lobe
(the
first
processing
centre)
abnormal
development
connectivity
within
mushroom
bodies
(central
neuropils
involved
multisensory
integration,
learning
memory
storage,
among
others).
Given
importance
perception
for
aspects
bee
biology,
reported
disruption
circuit,
which
can
occur
even
upon
exposure
to
sublethal
neonicotinoids,
severe
consequences
both
individual
colony
levels.
Moreover,
multimodal
structure
such
indicate
neonicotinoids'
translates
other
domains.
Assessing
pesticides
is
crucial
understanding
how
influence
behaviour
ecological
contexts
defining
effective
sustainable
agricultural
practices.
Cogent Food & Agriculture,
Год журнала:
2023,
Номер
9(1)
Опубликована: Сен. 28, 2023
Pesticides
are
considered
a
risk
to
pollinators;
however,
little
is
known
about
the
possible
effects
of
their
injudicious
use
on
pollinators,
including
ecosystem
services
provided
crops
and
wildflowers.
Recently,
great
attention
has
been
paid
neonicotinoids
pesticides
pollinators
potential
role
in
harming
health
bees
all
over
world.
Sunflowers,
being
self-incompatible
plants,
rely
insects,
primarily
bees,
for
effective
cross-pollination
successful
seed-set.
Ensuring
presence
sufficient
field
crucial
facilitating
pollen
movement
between
flowers
promoting
optimal
seed
development.
However,
reliance
insect-mediated
also
makes
sunflowers
susceptible
pest
attacks,
which
can
negatively
impact
production.
To
mitigate
these
threats
achieve
increased
yields,
careful
consideration
given
judicious
pesticides.
Striking
right
balance
providing
adequate
implementing
appropriate
management
strategies
vital
maximizing
sunflower
crop
productivity.
reveal
such
impacts
neonicotinoid
insecticides,
we
undergo
current
study
that
aimed
estimate
flower
visitation
pollination
by
applying
three
insecticides
i.e.
imidacloprid,
clothianidin,
thiamethoxam,
control
group
two
years
2020,
2021.
In
experimental
plots,
quantified
floral
visitors
fourteen
days
at
different
times
(8
am,
12
pm,
5
pm).
Floral
were
divided
into
groups,
Apis
Non-Apis
butterflies.
After
maturation
period,
achenes
from
each
capitulum
separated
brought
weight.
We
discovered
this
confirmed
adverse
effect
Abstract
Managed
honey
bees
are
experiencing
high
rates
of
colony
loss,
in
part
due
to
widespread
exposure
agrochemicals
and
other
environmental
toxins.
The
ability
learn
about
relevant
stimuli
is
an
important
skill
necessary
for
foraging
navigation,
although
it
sometimes
impaired
that
have
been
exposed
toxins
or
stressors.
Here,
we
review
the
effects
anthropogenic
(which
divide
into
five
major
classes:
insecticides,
acaricides,
biopesticides,
agrochemicals,
toxins)
on
learning
performance
European
bees.
We
discuss
general
trends
these
studies,
including
neurotoxic
insecticides
overwhelmingly
most
well-studied,
studies
focus
acute
individual,
adult
a
single
toxin.
Protocols
field-relevant
vary
widely
among
labs,
make
suggestions
aid
standardization
future
studies.
relevance
toxicological
risk
assessment,
concluding
they
valuable
tools
assessing
sublethal
behavioral
Their
inclusion
assessment
would
be
improvement
over
current
procedures,
which
largely
lethality.
Toxics,
Год журнала:
2023,
Номер
12(1), С. 18 - 18
Опубликована: Дек. 23, 2023
Honey
bees
have
significant
ecological
and
economic
value
as
important
pollinators,
but
they
are
continuously
exposed
to
various
environmental
stressors,
including
insecticides,
which
can
impair
their
health
cause
colony
decline.
(1)
Background:
Cognitive
abilities
vital
for
the
functional
maintenance
of
honey
bees;
however,
it
remains
unknown
if
chronic,
low-dose
exposure
thiacloprid
during
larval
stage
impairs
cognitive
emerged
adult
bees.
(2)
Methods:
To
explore
this
question,
bee
larvae
were
fed
0,
0.5,
1.0
mg/L
developmental
phase.
Then,
(i.e.,
olfactory
learning
memory)
quantified
assess
delayed
impacts
early-stage
on
cognition.
Neural
apoptosis
transcriptomic
level
also
evaluated
neurological
mechanisms
underlying
these
effects.
(3)
Results:
Our
results
revealed
that
chronic
sublethal
impaired
memory
by
inducing
neuronal
alterations.
(4)
Conclusions:
We
highlighted
a
previously
impairment
caused
in
Agriculture,
Год журнала:
2024,
Номер
14(5), С. 728 - 728
Опубликована: Май 8, 2024
The
phenomenon
of
prey
switching
is
prevalent
in
the
natural
world
and
represents
a
strategic
adaptation
predators
to
their
environment.
Neoseiulus
bicaudus,
native
predatory
mite
found
Xinjiang,
serves
as
enemy
numerous
small
pests.
utilization
Tyrophagus
putrescentiae
an
alternative
for
mass
breeding
N.
bicaudus
employed
fulfill
demands
enhanced
efficiency
cost-effectiveness.
Following
introduction
breed
into
agricultural
ecosystem,
there
was
from
Ty.
Tetranychus
turkestani.
objective
this
study
investigate
impact
at
various
stages
on
bicaudus.
This
age-stage,
two-sex
life
table
assess
parameters
undergoing
different
stages.
results
showed
that
survival
rate
significantly
decreased,
developmental
period
prolonged,
fecundity
improved
during
switching,
intrinsic
increase
decreased.
negative
effects
larva
deutonymph
were
greater
than
those
protonymph
adult
stage
age
positively
correlated
with
male
ratio,
negatively
total
preoviposition
mean
generation
time.
comprehension
can
enhance
our
understanding
predator
environmental
changes
contribute
artificial
rearing
application
enemy.