bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 21, 2024
Abstract
Insect
pollination
is
critical
for
both
wildflower
stability
and
agricultural
yields,
with
solitary
bees
being
a
group
of
pollinators
fundamental
importance.
However,
documented
declines
in
populations,
exacerbated
by
environmental
pressures,
including
climate
change,
pose
significant
threats
to
the
provision
ecosystem
services.
Exposure
elevated
temperatures
during
periods
dormancy,
such
as
overwintering,
predicted
lead
phenological
shifts,
changes
condition,
impacts
on
survival.
we
currently
lack
studies
that
inform
how
aspects
are
affected
future
change
scenarios.
Using
simulated
temperature
regimes
informed
predictions
Intergovernmental
Panel
Climate
Change,
exposed
overwintering
mason
(
Osmia
species)
three
field-relevant
profiles
based
either
present-day
or
under
two
major
warming
scenarios
(SSP2-4.5
SSP5-8.5)
measured
exposure
emergence
timing,
weight
loss
We
found
intermediate
worst-case
led
earlier
approximately
six
weeks,
respectively,
increasing
divergences
timing
between
sexes
bicornis
,
which
may
intraspecific
mismatches.
While
no
effect
survival
rates,
observed
increased
prior
but
contrast
other
studies,
it
only
mildly
mediated
shifts
brought
about
exposure,
suggesting
unlikely
play
role
trigger
bees.
Our
study
contributes
growing
literature
highlighting
impact
models
will
have
key
life
events
essential
pollinators,
consequences
at
population
community
levels.
Proceedings of the National Academy of Sciences,
Год журнала:
2024,
Номер
121(29)
Опубликована: Июль 11, 2024
Animals
can
alter
their
body
compositions
in
anticipation
of
dormancy
to
endure
seasons
with
limited
food
availability.
Accumulation
lipid
reserves,
mostly
the
form
triglycerides
(TAGs),
is
observed
during
preparation
for
diverse
animals,
including
insects
(diapause)
and
mammals
(hibernation).
However,
mechanisms
involved
regulation
accumulation
ecological
consequences
failure
accumulate
adequate
stores
animal
remain
understudied.
In
broadest
sense,
reserves
be
accumulated
two
ways:
either
receives
lipids
directly
from
environment
or
converts
sugars
amino
acids
present
fatty
through
de
novo
lipogenesis
then
TAGs.
Here,
we
show
that
diapause
Colorado
potato
beetle
(
Leptinotarsa
decemlineata
)
involves
orchestrated
upregulation
genes
metabolism
a
transcript
peak
8-
10-d-old
diapause-destined
insects.
Regulation
at
abundance
level
was
associated
substantial
fat
stores.
Furthermore,
knockdown
enzymes
ACCase
FAS-1
prolonged
preparatory
phase,
while
acid
transportation
shortened
phase.
Our
findings
suggest
model
which
dynamically
decide
when
transition
phase
into
diapause,
depending
on
progress
lipogenesis.
Bioscience Reports,
Год журнала:
2023,
Номер
44(1)
Опубликована: Дек. 22, 2023
The
female
reproductive
system
is
strongly
influenced
by
nutrition
and
energy
balance.
It
well
known
that
food
restriction
or
depletion
can
induce
suppression
of
processes,
while
overnutrition
associated
with
dysfunction.
However,
the
intricate
mechanisms
through
which
nutritional
inputs
metabolic
health
are
integrated
into
coordination
reproduction
still
being
defined.
In
this
review,
we
describe
evidence
for
essential
contributions
hormones
responsive
to
intake
fuel
stores.
Key
hormones-including
insulin,
incretins
(glucose-dependent
insulinotropic
polypeptide
glucagon-like
peptide-1),
growth
hormone,
ghrelin,
leptin,
adiponectin-signal
throughout
hypothalamic-pituitary-gonadal
axis
support
suppress
reproduction.
We
synthesize
current
knowledge
on
how
these
multifaceted
interact
brain,
pituitary,
ovaries
regulate
functioning
system,
incorporating
in
vitro
vivo
data
from
animal
models
humans.
Metabolic
involved
orchestrating
processes
healthy
states,
but
some
also
play
a
significant
role
pathophysiology
treatment
strategies
disorders.
Further
understanding
complex
interrelationships
between
function
has
important
implications
improving
women's
overall.
Proceedings of the National Academy of Sciences,
Год журнала:
2024,
Номер
121(36)
Опубликована: Авг. 28, 2024
Winter
diapause
in
insects
is
commonly
terminated
through
cold
exposure,
which,
like
vernalization
plants,
prevents
development
before
spring
arrives.
Currently,
quantitative
understanding
of
the
temperature
dependence
termination
limited,
likely
because
phenotypes
are
generally
cryptic
to
human
eyes.
We
introduce
a
methodology
tackle
this
challenge.
By
consecutively
moving
butterfly
pupae
species
Pieris
napi
from
several
different
conditions
20
°C,
we
show
that
proceeds
as
temperature-dependent
rate
process,
with
maximal
rates
at
relatively
temperatures
and
low
warm
extremely
temperatures.
Further,
resulting
thermal
reaction
norm
can
predict
P.
timing
under
variable
Last,
once
,
subsequent
follows
typical
performance
curve,
around
31
°C
minimum
2
°C.
The
sequence
these
thermally
distinct
processes
(diapause
postdiapause
development)
facilitates
synchronous
eclosion
nature;
microclimates
where
progresses
quickly
do
not
promote
fast
development,
allowing
individuals
warmer
winter
catch
up,
vice
versa.
unveiling
one
process
among
others
promotes
parsimonious,
quantitative,
predictive
model,
wherein
functions
both
an
adaptation
against
premature
during
fall
for
synchrony
spring.
Integrative and Comparative Biology,
Год журнала:
2024,
Номер
unknown
Опубликована: Апрель 25, 2024
Synopsis
In
temperate
environments,
most
species
of
insects
enter
an
arrested
state
development,
known
as
diapause,
that
enables
them
to
survive
the
adverse
environmental
conditions
associated
with
winter.
Although
diapause
is
restricted
a
single
life
stage
within
insects,
there
are
examples
overwinter
in
egg,
larval,
pupal,
and
adult
stages.
Here
we
offer
targeted,
non-systematic
literature
review
examining
how
overwintering
impacts
subsequent
reproduction
female
insects.
Several
factors,
including
lifestage
at
which
overwinter,
type
energy
investment
strategy
females
use
for
breeding,
elements
winter
environment,
contributions
from
male
can
influence
trade-offs
face
between
survival
post-diapause
reproduction.
Additionally,
climate
change
urban
light
pollution
higher
temperatures
cities,
exacerbate
or
ameliorate
faced
by
reproducing
Better
understanding
not
only
enhances
our
underlying
physiological
mechanisms
ecological
processes
governing
reproduction,
but
also
provides
opportunities
better
manage
insect
pests
and/or
support
beneficial
Trends in Ecology & Evolution,
Год журнала:
2024,
Номер
39(8), С. 757 - 770
Опубликована: Май 22, 2024
Insects
have
major
impacts
on
forest
ecosystems,
from
herbivory
and
soil-nutrient
cycling
to
killing
trees
at
a
large
scale.
Forest
insects
temperate,
tropical,
subtropical
regions
evolved
strategies
respond
seasonality;
for
example,
by
entering
diapause,
mitigate
adversity
synchronize
lifecycles
with
favorable
periods.
Here,
we
show
that
distinct
functional
groups
of
insects;
is,
canopy
dwellers,
trunk-associated
species,
soil/litter-inhabiting
insects,
express
variety
diapause
strategies,
but
do
not
systematic
differences
in
strategy
depending
group.
Due
the
overall
similarities
can
better
estimate
anthropogenic
change
insect
populations
and,
consequently,
key
ecosystems.
Frontiers in Physiology,
Год журнала:
2025,
Номер
16
Опубликована: Март 14, 2025
Insect
diapause
is
a
vital
survival
strategy
that
enables
insects
to
enter
state
of
suspended
development,
allowing
them
withstand
unfavorable
environmental
conditions.
During
diapause,
significantly
lower
their
metabolic
rate
and
build
up
energy
reserves,
which
they
gradually
utilize
throughout
this
period.
The
regulation
involves
complex
interaction
hormones
enzymes.
Juvenile
(JHs)
affect
adults
larvae
differently;
in
adults,
the
absence
JH
typically
triggers
while
larvae,
presence
encourages
state.
Ecdysteroids,
regulate
molting
metamorphosis,
are
carefully
controlled
prevent
premature
development.
Reduced
signaling
insulin-like
peptides
enhances
stress
resistance
promotes
storage.
Several
enzymes
play
crucial
roles
adjustments
necessary
for
diapause.
These
include
degradation
JH,
ecdysteroidogenic
pathway,
metabolism
fatty
acids,
glycogen,
cryoprotectants,
responses.
Understanding
diapause's
molecular
biochemical
mechanisms
essential
fundamental
entomological
research
practical
applications.
Despite
recent
advances,
many
aspects
regulation,
especially
interactions
among
hormonal
pathways
role
enzymes,
remain
poorly
understood.
This
review
analyzes
approximately
250
papers
consolidate
current
knowledge
on
enzymatic
It
offers
comprehensive
overview
key
processes
based
studies
suggests
future
directions
fill
gaps
our
understanding
significant
biological
phenomenon.
also
lays
groundwork
enhancing
pest
control
strategies
ecological
conservation
by
deepening
mechanisms.
