bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 24, 2024
Animals
that
overwinter
in
temperate
climates
must
prevent
or
repair
damage
to
their
cells
survive
winter,
but
we
know
little
about
how
they
protect
cellular
structure
at
the
cytoskeletal
level.
Both
chilling
(no
ice
formation)
and
freezing
(ice
are
hypothesized
cause
substantial
challenges
cell
cytoskeleton.
The
spring
field
cricket
Gryllus
veletis
becomes
freeze-tolerant
following
a
6-week
acclimation
fall-like
conditions,
during
which
differentially
express
multiple
cytoskeleton-related
genes.
We
tested
hypothesis
G.
alter
cytoskeleton
support
maintenance
of
thawing.
used
immunocytochemistry
confocal
microscopy
characterize
changes
microfilaments
(F-actin,
polymer
G-actin)
microtubules
(a
α-
β-tubulin)
three
tissues.
While
saw
no
effect
on
microtubules,
crickets
increased
abundance
fat
body
Malpighian
tubules.
When
chilled
froze
these
crickets,
there
was
apparent
actin
tubulin
body,
decreased
freeze-intolerant
(unacclimated)
microfilament
tissue,
while
were
unaffected
by
same
subzero
temperature.
Our
study
shows
able
rapidly
ice-induced
likely
due
preparatory
advance
-
i.e.,
acclimation.
suggest
future
directions
examining
mechanisms
underlie
structural
changes.
Biology,
Journal Year:
2023,
Volume and Issue:
12(7), P. 907 - 907
Published: June 25, 2023
Anthropogenic
challenges,
particularly
climate
change-associated
factors,
are
strongly
impacting
the
behavior,
distribution,
and
survival
of
insects.
Yet
how
these
changes
affect
pests
such
as
Drosophila
suzukii,
a
cosmopolitan
pest
soft-skinned
small
fruits,
remains
poorly
understood.
This
polyphagous
is
chill-susceptible,
with
cold
temperatures
causing
multiple
stresses,
including
desiccation
starvation,
also
challenging
immune
system.
Since
invasion
Europe
United
States
America
in
2009,
it
has
been
rapidly
spreading
to
several
European
American
countries
(both
North
South
American)
African
Asian
countries.
However,
globalization
global
warming
allowing
an
altitudinal
latitudinal
expansion
species,
thus
colonization
colder
regions.
review
explores
D.
suzukii
adapts
survive
during
seasons.
We
focus
on
overwintering
strategies
behavioral
adaptations
migration
or
sheltering,
seasonal
polyphenism,
reproductive
adaptations,
well
metabolic
transcriptomic
response
cold.
Finally,
we
discuss
continuation
change
may
promote
ability
this
species
spread,
what
mitigation
measures
could
be
employed
overcome
cold-adapted
suzukii.
Current Research in Insect Science,
Journal Year:
2024,
Volume and Issue:
5, P. 100073 - 100073
Published: Jan. 1, 2024
Diapause
is
a
form
of
internally-controlled
dormancy
that
allows
insects
to
avoid
stressful
conditions
and
periods
low
food
availability.
Eastern
spruce
budworm
(
Journal of Experimental Biology,
Journal Year:
2024,
Volume and Issue:
227(14)
Published: July 15, 2024
Many
intertidal
invertebrates
are
freeze
tolerant,
meaning
that
they
can
survive
ice
formation
within
their
body
cavity.
Freeze
tolerance
is
a
fascinating
trait,
and
understanding
its
mechanisms
important
for
predicting
the
survival
of
animals
during
extreme
cold
weather
events.
In
this
Review,
we
bring
together
current
research
on
ecology,
biochemistry
physiology
group
freeze-tolerant
organisms.
We
first
introduce
ecology
zone,
then
highlight
strong
geographic
taxonomic
biases
literature
topic.
Next,
detail
knowledge
used
by
invertebrates.
Although
in
terrestrial
arthropods
have
been
well-explored,
marine
invertebrate
less
well
understood
does
not
appear
to
work
similarly
because
osmotic
differences
come
with
living
seawater.
thought
be
utilized
include:
(1)
low
molecular
weight
cryoprotectants,
such
as
compatible
osmolytes
anaerobic
by-products;
(2)
high
ice-binding
proteins;
(3)
other
involving
heat
shock
proteins
aquaporins.
Lastly,
describe
untested
hypotheses,
methods
approaches
researchers
use
fill
gaps.
Understanding
consequences
zone
has
many
ecological
implications,
but
also
provides
an
opportunity
broaden
our
more
generally.
Environmental Entomology,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 2, 2025
Abstract
Histia
rhodope
(Cramer)
(Lepidoptera:
Zygaenidae)
is
one
of
the
most
destructive
defoliating
pests
landscape
tree
Bischofia
polycarpa
(Levl.)
S
in
China
and
other
Southeast
Asian
regions,
posing
a
critical
threat
to
urban
landscapes
their
ecological
benefits.
This
pest
has
shown
trend
northward
range
shift
recent
years
China,
making
it
urgent
understand
its
potential
distribution.
study
investigated
cold
tolerance
overwintering
H.
larvae
from
October
2022
March
2023
estimated
China.
The
results
showed
that
supercooling
points
(SCP)
differed
significantly
across
months.
SCP
tended
decrease
as
ambient
temperature
dropped
until
January,
after
which
gradually
increased
end
winter.
highest
monthly
mean
was
−7.5
±
2.22°C
(October
2022),
while
lowest
−15.09
2.61°C
(January
2023).
mortality
rate
with
longer
exposure
times
lower
temperatures
but
decreased
winter
progressed.
Moreover,
50%
90%
lethal
(Ltemp50
Ltemp90)
exhibited
similar
trend,
decreasing
minimum
January
2023,
indicates
during
colder
Using
Ltemp90
isotherm
for
northern
limit
indicated
may
be
limited
by
low
along
40°N
latitude.
These
provide
basis
predicting
dispersal
possible
geographic
this
Scientific Reports,
Journal Year:
2025,
Volume and Issue:
15(1)
Published: April 2, 2025
The
invasive
phytophagous
lace
bug,
Corythucha
marmorata,
threatens
the
functional
food
crop
Helianthus
tuberosus,
but
its
overwintering
ecology
on
this
plant
is
poorly
understood.
This
study
evaluated
cold
hardiness
of
C.
marmorata
at
various
life
stages,
focusing
differences
between
female
and
male
adults.
overwinter
as
adults
H.
based
a
four-year
winter
field
investigation.
supercooling
equilibrium
freezing
points
decline
with
development.
Female
showed
greatest
capacity.
lower
lethal
temperature
(female
-
15
°C,
16
°C)
above
point
(-
26
°C).
low
exposure
mortality
exhibited
different
regularities.
We
conclude
that
belongs
to
chill
susceptible
insects.
October
February
most
recommended
period
for
control
by
harvesting
tuberosus.
Weed
removal,
such
Erigeron
bonariensis,
canadensis,
Ambrosia
trifida,
an
early
measure.
These
results
enhance
our
understanding
marmorata's
tolerance
inform
targeted
pest
management
strategies
tuberosus
crops.
