bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 12, 2024
Abstract
Pesticides
often
harm
beneficial
insect
pollinators,
impairing
their
ability
to
navigate
the
environment,
learn,
fight
off
disease,
and
reproduce.
Understanding
mechanisms
behind
these
disorders
is
essential
for
improving
pesticide
risk
assessments.
To
test
whether
exposure
induces
similar
or
distinct
transcriptional
responses
across
tissues,
we
administered
field-realistic
dose
of
common
neonicotinoid
clothianidin
Bombus
terrestris
bumble
bees.
We
then
measured
gene
expression
in
brains,
hind
femurs,
Malpighian
tubules.
Our
analyses
revealed
that
82%
differences
were
tissue-specific.
Although
genes
associated
with
energy
metabolism
consistently
down-regulated
all
primarily
affected
core
tissue
functions,
namely
linked
ion
transport
brain,
muscle
function
femur,
detoxification
Furthermore,
while
brain
holds
highest
abundance
target
receptors,
other
tissues
showed
more
substantial
magnitude.
These
findings
reveal
causes
complex,
tissue-specific
effects
rather
than
a
uniform
body-wide
response.
study
provides
mechanistic
basis
severe
on
bees
shows
how
transcriptomics
can
help
pinpoint
most
areas
processes
body.
Accordingly
focusing
toxicological
assays
could
significantly
improve
precision
safety
evaluations.
Journal of Agricultural and Food Chemistry,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 25, 2024
Neonicotinoid
insecticides
(NNIs)
are
extensively
utilized
globally
because
of
their
efficient
and
broad-spectrum
properties.
However,
residues
also
distributed
in
the
environment.
Herein,
MIL-101-SO
Frontiers in Ecology and Evolution,
Journal Year:
2021,
Volume and Issue:
9
Published: Oct. 21, 2021
Climate
change
is
related
to
an
increase
in
the
frequency
and
intensity
of
extreme
events
such
as
heatwaves.
In
insect
pollinators,
heat
exposure
associated
with
direct
physiological
perturbations,
several
species,
could
lead
a
decrease
fitness
fertility.
Here
we
developed
new
experimental
protocol
controlled
conditions
assess
if
high
temperatures
modify
attractiveness
fertility
Bombus
terrestris
males.
Our
results
show
that
virgin
queens
B.
do
not
have
preferences
between
pheromonal
secretions
heat-exposed
control
Moreover,
mating
male
has
no
impact
on
copulation
behavior
development
nest
(brood
composition).
We
advise
extend
trials
cover
range
wild
heat-sensitive
species
multiple
generations
better
understand
waves
bumblebee
communities.
PLoS ONE,
Journal Year:
2024,
Volume and Issue:
19(8), P. e0308950 - e0308950
Published: Aug. 16, 2024
Eusocial
insects,
such
as
stingless
bees
(Meliponini),
depend
on
division
of
labour,
overlapping
generations,
and
collaborative
brood
care
to
ensure
the
functionality
success
their
colony.
Female
workers
transition
through
a
range
age-specific
tasks
during
lifespan
(i.e.,
age-polyethism)
play
central
role
in
These
(e.g.,
or
foraging)
often
closely
coincide
with
key
physiological
changes
necessary
optimal
performance.
However,
our
understanding
how
nutrition,
age,
polyethism
may
affect
development
traits
remains
limited.
Here
we
show
that
pollen
consumption
age-polyethism
govern
hypopharyngeal
gland
(HPG)
acini
size
protein
content
Tetragonula
pagdeni
.
By
conducting
controlled
laboratory
experiment
monitored
effect
worker
bee
survival
well
assessed
diet
age
affected
HPG
width
content.
Further,
sampled
nurses
foragers
from
field
colonies
measure
width.
We
found
enhanced
led
increased
were
expected
largest
nurse
bees.
Our
findings
highlight
beneficial
effects
an
adequate
for
health
reveal
is
factor
governing
As
HPGs
are
imperative
care—an
essential
component
eusociality—the
data
provide
foundation
future
studies
investigate
impact
potential
environmental
stressors
critical
trait
which
serve
proxy
understand
at
colony
level.
bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 12, 2024
Abstract
Pesticides
often
harm
beneficial
insect
pollinators,
impairing
their
ability
to
navigate
the
environment,
learn,
fight
off
disease,
and
reproduce.
Understanding
mechanisms
behind
these
disorders
is
essential
for
improving
pesticide
risk
assessments.
To
test
whether
exposure
induces
similar
or
distinct
transcriptional
responses
across
tissues,
we
administered
field-realistic
dose
of
common
neonicotinoid
clothianidin
Bombus
terrestris
bumble
bees.
We
then
measured
gene
expression
in
brains,
hind
femurs,
Malpighian
tubules.
Our
analyses
revealed
that
82%
differences
were
tissue-specific.
Although
genes
associated
with
energy
metabolism
consistently
down-regulated
all
primarily
affected
core
tissue
functions,
namely
linked
ion
transport
brain,
muscle
function
femur,
detoxification
Furthermore,
while
brain
holds
highest
abundance
target
receptors,
other
tissues
showed
more
substantial
magnitude.
These
findings
reveal
causes
complex,
tissue-specific
effects
rather
than
a
uniform
body-wide
response.
study
provides
mechanistic
basis
severe
on
bees
shows
how
transcriptomics
can
help
pinpoint
most
areas
processes
body.
Accordingly
focusing
toxicological
assays
could
significantly
improve
precision
safety
evaluations.
