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
Larval density in the invasive Drosophila suzukii: Immediate and delayed effects on life‐history traits
Ecology and Evolution,
Год журнала:
2023,
Номер
13(8)
Опубликована: Авг. 1, 2023
The
effects
of
density
are
key
in
determining
population
dynamics,
since
they
can
positively
or
negatively
affect
the
fitness
individuals.
These
have
great
relevance
for
polyphagous
insects
which
immature
stages
develop
within
a
single
site
finite
feeding
resources.
Drosophila
suzukii
is
crop
pest
that
induces
severe
economic
losses
agricultural
production;
however,
little
known
about
on
its
life-history
traits.
In
present
study,
we
(i)
investigated
egg
distribution
resulting
from
females'
egg-laying
strategy
and
(ii)
tested
immediate
(on
immatures)
delayed
adults)
larval
emergence
rate,
development
time,
potential
fecundity,
adult
size.
used
varied
range
between
1
50
larvae.
We
showed
44.27%
blueberries
oviposition
assay
contained
11
eggs
aggregates.
high
experimental
(50
larvae)
has
no
effect
rate
but
developmental
time.
This
trait
was
involved
trade-off
with
traits:
time
reduced
as
increased,
smaller
less
fertile
females
were
produced.
Our
results
clearly
highlight
consequences
crowding
juveniles
adults
this
fly.
Язык: Английский
Insect population dynamics under Wolbachia-induced cytoplasmic incompatibility: Puzzle more than buzz in Drosophila suzukii
PLoS ONE,
Год журнала:
2024,
Номер
19(3), С. e0300248 - e0300248
Опубликована: Март 12, 2024
In
theory,
the
introduction
of
individuals
infected
with
an
incompatible
strain
Wolbachia
pipientis
into
a
recipient
host
population
should
result
in
symbiont
invasion
and
reproductive
failures
caused
by
cytoplasmic
incompatibility
(CI).
Modelling
studies
combining
dynamics
show
that
these
two
processes
could
interact
to
cause
transient
decline
and,
some
conditions,
extinction.
However,
effects
be
sensitive
density
dependence,
Allee
effect
increasing
probability
extinction,
competition
reducing
demographic
impact
CI.
We
tested
predictions
laboratory
experiments
fruit
fly
Drosophila
suzukii
transinfected
w
Tei.
Surprisingly,
Tei
D
.
populations
at
carrying
capacity
did
not
expected
decline.
parallel,
we
found
no
but
strong
negative
dependence.
From
results,
propose
interacts
antagonistic
way
-induced
on
insect
dynamics.
If
future
models
data
support
this
hypothesis,
pest
management
strategies
using
CI
target
negligible
potential
effect,
for
instance
beginning
season.
Язык: Английский
Insect population dynamics underWolbachia-induced cytoplasmic incompatibility: puzzle more than buzz inDrosophila suzukii
bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2023,
Номер
unknown
Опубликована: Авг. 4, 2023
Abstract
In
theory,
the
introduction
of
individuals
infected
with
an
incompatible
strain
Wolbachia
pipientis
into
a
recipient
host
population
should
result
in
symbiont
invasion
and
reproductive
failures
caused
by
cytoplasmic
incompatibility
(CI).
Modelling
studies
combining
dynamics
show
that
these
two
processes
could
interact
to
cause
transient
decline
and,
some
conditions,
extinction.
However,
effects
be
sensitive
density
dependence,
Allee
effect
increasing
probability
extinction,
competition
reducing
demographic
impact
CI.
We
tested
predictions
laboratory
experiments
fruit
fly
Drosophila
suzukii
transinfected
w
Tei.
Surprisingly,
Tei
D.
populations
at
carrying
capacity
did
not
expected
decline.
parallel,
we
found
no
but
strong
negative
dependence.
From
results,
propose
interacts
antagonistic
way
-induced
on
insect
dynamics.
If
future
models
data
support
this
hypothesis,
pest
management
strategies
using
CI
target
negligible
potential
effect,
for
instance
beginning
season.
Язык: Английский