Research Square (Research Square),
Journal Year:
2022,
Volume and Issue:
unknown
Published: Dec. 12, 2022
Abstract
Background
Climate
change
will
likely
increase
the
spatial
and
temporal
variability
of
thermal
conditions,
particularly
severity
frequency
heat
waves.
The
key
factor
in
forecasting
which
species
be
vulnerable
to
this
threat
biodiversity
their
behavioural
responses
climate
change.
However,
few
studies
have
examined
how
rate
waves
warming
affect
frog
behaviour
survival.
This
study
different
rates
constant
temperature
(5°C,
humidity
65
85)
increases
(approach
(A)-naturalistic
increase;
approach
(B)-simulated
from
5°C
15,
19,
or
23°C;
(C)-simulated
23°C
at
0.8,
1.3,
1.8°C/d)
affected
survival
post
reproductive
fasting.
Result
Under
(A),
Rana
dybowskii
fasted
for
42
days
(d),
was
27.78
±
5.09%.
In
15°C
group
under
(B),
decreased
16.67
5.77%,
feeding
began
after
only
11.00
1.09
d;
however,
other
(B)
groups,
100%
frogs
died
before
feeding.
(C),
reached
50.00
55.56
1.92%
41.11
5.09%
1.3
1.8°C/d,
respectively,
with
significant
differences
between
all
pairs
groups.
Furthermore,
1.8°C/d
16.87
2.42,
15.46
2.31,
13.73
1.88
d,
(humidity
65.38%)
group,
survivorship
81.11
1.57%,
while
85.90%)
it
83.33
2.72%.
Approaches
(C)
differed
postbreeding
fasting
duration.
Conclusions
simulated
wave
conditions
significantly
lower,
time
reduced.
Frogs
had
a
higher
spent
less
time.
BMC Zoology,
Journal Year:
2023,
Volume and Issue:
8(1)
Published: Jan. 16, 2023
Amphibians
are
facing
population
declines
and
extinctions,
protecting
supplementing
refuges
can
help
species
survive.
However,
the
microhabitat
requirements
of
most
unknown,
artificial
shelters
or
burrows
have
not
been
well
tested
for
amphibians.
Some
amphibians
exhibit
complex
behaviour
during
transition
from
post-reproductive
dormancy
to
activity.
little
is
known
about
ecology,
dormancy,
terrestrial
activity
Here,
habitat
site
selection
in
experimental
enclosures
effects
(stones,
soil)
shade
(with
without
netting)
on
activity,
exposed
body
percentage,
burrow
depth,
body-soil
contact
survival
Rana
dybowskii
were
investigated
post-dormant
The
results
showed
that
R.
live
individually
under
leaves,
soil,
stones
tree
roots.
Furthermore,
although
dormant
sites
frogs
significantly
different,
distribution
male
female
these
similar.
Shading
shelter
affected
depth
percentage
compared
with
soil.
In
stone
group,
soil
form
frog's
refuge/burrow,
whereas
refuge/burrow
composed
entirely
Even
though
group
has
a
deeper
larger
area
body,
it
still
higher
exposure
rate
than
group.
Frog
frequency
was
by
shade;
interaction
time
shading
significant.
had
no-shade
Shelter
differences
do
affect
frog
survival;
however,
death
lower
active
period.
Frontiers in Ecology and Evolution,
Journal Year:
2022,
Volume and Issue:
10
Published: Nov. 4, 2022
Realistic
predictions
about
the
impacts
of
climate
change
onbiodiversity
requires
gathering
ecophysiological
data
and
critical
thermal
maxima
(CTMax)
is
most
frequently
used
index
to
assess
vulnerability
species.
In
present
study,
we
performed
a
systematic
review
understand
how
acclimation
altitude
affect
CTMax
estimates
for
amphibian
non-avian
reptile
We
retrieved
anurans,
salamanders,
lizards,
snakes,
turtles/terrapins.
Data
allowed
perform
multilevel
random
effects
meta-analysis
answer
temperature
Anura,
Caudata,
Squamata
also
meta-regressions
influence
on
frogs
lizards.
Acclimation
influenced
tadpoles,
adult
but
not
froglets.
general,
increase
in
led
higher
values.
Altitudinal
bioclimatic
gradient
had
an
inverse
effect
estimating
lizards
anuran
amphibians.
For
was
positively
by
mean
wettest
quarter.
relationship
inverse;
recover
trend
decreasing
when
max
warmest
month
precipitation
seasonality
increase.
There
urgent
need
studies
investigate
tolerance
subsampled
groups
or
even
which
do
have
any
information
such
as
Gymnophiona,
Serpentes,
Amphisbaena,
Testudines.
Broader
phylogenetic
coverage
mandatory
more
accurate
analyses
macroecological
evolutionary
patterns
indices
CTMax.
Proceedings of the Royal Society B Biological Sciences,
Journal Year:
2024,
Volume and Issue:
291(2034)
Published: Nov. 1, 2024
Temporally
variable
climates
are
expected
to
drive
the
evolution
of
thermal
physiological
traits
that
enable
performance
across
a
wider
range
temperatures
(i.e.
climate
variability
hypothesis,
CVH).
Spatial
variability,
however,
may
mediate
this
relationship
by
providing
ectotherms
with
opportunity
behaviourally
select
preferred
Bogert
effect).
These
antagonistic
forces
on
explain
mixed
support
for
CVH
within
species
despite
strong
among
at
larger
geographical
scales.
Here,
we
test
as
it
relates
plasticity
in
upper
limits
(critical
maximum—CTmax)
populations
coastal
tailed
frogs
(
Ascaphus
truei
).
We
targeted
inhabit
spatially
homogeneous
environments,
reducing
potentially
confounding
effects
behavioural
thermoregulation.
found
experiencing
greater
temporal
exhibited
CTmax,
supporting
CVH.
Interestingly,
identified
only
one
site
spatial
temperature
and
tadpoles
from
demonstrated
than
expected,
suggesting
thermoregulation
can
reduce
Overall,
our
results
demonstrate
role
shaping
provide
baseline
understanding
impact
landscapes.
Journal of Experimental Zoology Part A Ecological and Integrative Physiology,
Journal Year:
2023,
Volume and Issue:
339(4), P. 339 - 345
Published: Feb. 21, 2023
Abstract
Plasticity
in
heat
tolerance
provides
ectotherms
the
ability
to
reduce
overheating
risk
during
thermal
extremes.
However,
tolerance–plasticity
trade‐off
hypothesis
states
that
individuals
acclimated
warmer
environments
have
a
reduced
plastic
response,
including
hardening,
limiting
their
further
adjust
tolerance.
Heat
hardening
describes
short‐term
increase
following
shock
remains
understudied
larval
amphibians.
We
sought
examine
potential
between
basal
and
plasticity
of
amphibian,
Lithobates
sylvaticus
,
response
differing
acclimation
temperatures
periods.
Lab‐reared
larvae
were
exposed
one
two
(15°C
25°C)
for
either
3
or
7
days,
at
which
time
was
measured
as
critical
maximum
(CT
max
).
A
treatment
(sub‐critical
temperature
exposure)
applied
2
h
before
CT
assay
comparison
control
groups.
found
heat‐hardening
effects
most
pronounced
15°C
larvae,
particularly
after
days
acclimation.
By
contrast,
25°C
exhibited
only
minor
responses,
while
significantly
increased
shown
by
elevated
temperatures.
These
results
are
line
with
hypothesis.
Specifically,
exposure
induces
tolerance,
shifts
towards
upper
limits
constrain
capacity
respond
acute
stress.
Deleted Journal,
Journal Year:
2024,
Volume and Issue:
97(2), P. 81 - 96
Published: March 1, 2024
Tropical
ectotherms
are
thought
to
be
especially
vulnerable
climate
change
because
they
have
evolved
in
temporally
stable
thermal
environments
and
therefore
decreased
tolerance
for
variability.
Thus,
expected
narrow
ranges,
live
close
their
upper
limits,
acclimation
capacity.
Although
models
often
predict
that
tropical
forest
rapid
environmental
shifts,
these
rarely
include
the
potential
plasticity
of
relevant
traits.
We
measured
phenotypic
preference
as
well
multitissue
transcriptome
response
warmer
temperatures
a
species
previous
work
has
suggested
is
highly
warming,
Panamanian
slender
anole
lizard
(Anolis
apletophallus).
found
many
genes,
including
heat
shock
proteins,
were
differentially
expressed
across
tissues
short-term
warming.
Under
long-term
voluntary
maxima
lizards
also
increased,
although
exhibited
only
limited
plasticity.
Using
data,
we
modeled
changes
activity
time
anoles
through
end
century
under
should
delay
declines
by
at
least
two
decades.
Our
results
suggest
anoles,
possibly
other
ectotherms,
can
alter
expression
genes
phenotypes
when
responding
shifting
considered
predicting
future
organisms
changing
climate.
