Winter fruit contribution to the performance of the invasive fruit fly Drosophila suzukii under different thermal regimes
Insect Science,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 16, 2025
Polyphagous
insect
species
develop
using
multiple
host
plants.
Often
considered
beneficial,
polyphagy
can
also
be
costly
as
nutritional
quality
may
vary.
Drosophila
suzukii
(Matsumura)
is
an
invasive
that
on
numerous
fruit
over
the
annual
cycle.
Here,
we
assessed
contribution
of
winter-available
to
development
seasonal
populations
D.
suzukii,
under
fluctuating
late
winter/early
spring
temperature
regimes.
We
infested
artificial
diet
and
three
suitable
available
in
(Aucuba
japonica,
Elaeagnus
×submacrophylla,
Viscum
album)
with
larvae
regimes:
constant
20
°C,
controlled
regime
8-15
°C
(12
h
light
at
8
12
dark
15
°C),
uncontrolled
outdoor
during
spring.
As
expected,
fly
performance
was
impaired
by
early
spring-like
environmental
conditions,
whatever
diet,
winter
were
suboptimal
diets
compared
thermal
regime.
However,
cold
regimes,
ranking
supporting
best
changed,
highlighting
occurrence
physiological
trade-offs.
Winter-acclimated
females
preferentially
oviposited
A.
japonica
and/or
E.
regime,
which
does
not
support
preference-performance
hypothesis.
This
finding
discussed
context
management
strategies.
Язык: Английский
Exploring the influence of habitat, ground refugia and behavioral strategies on the overwintering success of Drosophila suzukii, Matsumura
Pest Management Science,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 7, 2025
The
overwintering
biology
of
Drosophila
suzukii
is
poorly
understood.
While
thermal
tolerance
studies
suggest
that
winter
morphotype
females
likely
survive
harsh
winters
given
physiological
changes
lead
to
cold-hardening,
additional
factors
such
as
habitat
selection
are
important
but
In
the
present
study,
we
conducted
a
field
study
at
three
vineyard
sites
investigate
selection,
semi-field
measure
survival
outcomes
depending
on
various
ground
refugia,
and
laboratory
evaluate
vertical
movement
in
response
simulated
flood
conditions
often
observed
winter.
Our
results
showed
things.
First,
was
most
abundant
wooded
areas
vineyards
near
pomace
piles.
Few
were
captured
itself
even
fewer
winery
facilities.
Second,
insulating
cover
straw
beneficial
improving
survivability.
Third,
while
during
stable
periods
below
freezing,
warm-up
where
snow
melts
subsequently
floods
ground,
fly
mobility
critical
for
survival.
Cold
acclimated
flies
active
participants
their
environment,
freezing
temperatures,
navigating
changing
landscape
features
adjusting
position
temperature
conditions.
data
first
time
cold
capable
temperatures
water
levels
rise
level
thaw
events.
Thus,
behavior
ecology
D.
more
complex
than
previously
thought,
there
several
addition
hardening
contribute
success.
©
2025
Society
Chemical
Industry.
Язык: Английский
Cold Tolerance of European Populations of Drosophila Suzukii Varies Among Seasonal Phenotypes
Опубликована: Янв. 1, 2025
Язык: Английский
How does ageing affect life history traits and cold tolerance in summer‐versus winter‐acclimated fruit flies?
Ecological Entomology,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 12, 2025
Abstract
All
species
exhibit
functional
senescence,
a
process
related
to
ageing
that
is
influenced
by
both
abiotic
and
biotic
factors.
Ageing
leads
decline
in
function
drives
phenotypic
marked
reduction
performance
over
time.
In
temperate
regions,
overwintering
must
survive
age
for
several
months,
often
facing
challenging
conditions
with
low
food
availability
chilling
injuries.
Yet,
might
enter
state
of
dormancy,
which
can
extend
longevity
enhance
stress
tolerance.
Evaluating
the
survivors
crucial
predicting
population
dynamics,
especially
significant
pests
like
invasive
fruit
flies.
At
end
winter,
surviving
fly
populations,
are
expected
rebuild
new
generations,
likely
dormant
(i.e.,
reproductive
quiescence)
senescent.
However,
their
has
not
been
thoroughly
described.
This
study
aims
decipher
effect
on
tolerance
capacity
males
females
summer‐acclimated
(SP)
versus
winter‐acclimated
(WP)
phenotypes
Drosophila
suzukii
.
SP
WP
flies
were
reared
under
normal
temperature
conditions,
respectively,
four
categories
established:
very
young,
middle
old.
showed
typical
age‐related
fecundity.
contrast,
cold‐acclimated
maintained
high
exhibited
lower
but
stable
potential,
despite
months
at
temperature.
Our
highlights
importance
distinguishing
between
summer
phenotypes,
as
differentially
affects
both.
Язык: Английский
Environmental conditions influencing seasonal population dynamics of Drosophila suzukii (Diptera: Drosophilidae) in mid‐latitude organic farms
Agricultural and Forest Entomology,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 1, 2025
Abstract
The
local
population
dynamics
of
an
invasive
species
are
important
for
determining
proper
management.
Temporal
and
spatial
distribution
can
influence
monitoring
treatment
decisions,
understanding
climatic
influences
on
size
help
predict
peak
numbers.
Drosophila
suzukii
(Matsumara,
1931)
is
fruit
pest,
its
seasonal
vary
across
range.
We
conducted
a
three‐year
trapping
study
with
various
modelling
approaches
to
determine
the
environmental
variables
influencing
D.
all
seasons
in
Kentucky,
temperate
state
overwintering
.
Male
female
flies
were
active
seasons,
visiting
traps
located
ground
at
plant
height.
Most
caught
wooded
edge
habitat
crops
only
had
more
catches
than
forest
during
summer.
Population
was
best
predicted
by
general
additive
model
that
included
average
temperature
8
weeks
before
sampling
relative
humidity
two
sampling,
which
differs
from
other
models
have
extremely
low
as
most
predictive
weather
variable.
Our
results
indicate
factors
Kentucky
differ
those
higher
or
lower
latitudes.
recommend
leading
up
fruiting
pest
pressure.
Further,
our
suggest
optimal
time
monitor
when
temperatures
exceed
21°C.
Broadly,
findings
highlight
need
investigate
these
appropriate
scale
develop
region‐specific
management
recommendations.
Язык: Английский