Insects,
Год журнала:
2022,
Номер
13(11), С. 995 - 995
Опубликована: Окт. 29, 2022
Drosophila
suzukii
(Matsumura),
is
a
globally
invasive
pest
of
soft
and
stone
fruit.
To
survive
winter
in
temperate
zones
it
enters
reproductive
diapause
morphologically
distinct
phenotype.
Phagostimulant
baits
can
be
combined
with
insecticides
attract-and-kill
strategies
for
control.
We
investigated
the
effectiveness
single
yeast
species
combinations
co-fermented
phagostimulant
when
laboratory
assays
against
both
summer-
winter-morph
D.
suzukii.
Candida
zemplininia
or
Hanseniaspora
uvarum
+
C.
lambda-cyhalothrin
cyantraniliprole,
H.
cyantraniliprole
caused
significantly
higher
mortality
winter-
compared
to
summer-morph
Additionally,
M.
pulcherrima
resulted
greater
yeasts,
winter-morphs
summer-morphs.
spinosad
reduced
time-to-kill
(50%)
summer-morphs
insecticide
alone.
Most
yeast-based
were
comparable
terms
efficacy
Combi-protec,
commercially
available
bait,
although
less
effective.
Our
study
suggests
that
phagostimulants
should
adjusted
more
effective
Biological Control,
Год журнала:
2024,
Номер
195, С. 105562 - 105562
Опубликована: Июнь 19, 2024
The
lineage
G1
of
Ganaspis
brasiliensis
is
a
larval
parasitoid
the
worldwide
pest
Drosophila
suzukii
and
one
its
most
effective
natural
enemies
in
native
area.
Because
high
degree
host
specificity,
G.
considered
suitable
species
for
introduction
areas
invaded
by
D.
following
classical
biological
control
approach.
Indeed,
release
currently
implemented
USA
Italy.
females
attack
only
larvae
developing
ripening
fresh
fruits
on
plant
not
that
develop
decaying
fruits.
To
date,
virtually
no
information
available
cues
regulating
foraging
behavior
G1.
In
this
study,
we
therefore
aimed
to
find
out
whether
chemical
are
exploited
to:
(i)
locate
fruits;
(ii)
within
infested
fruit;
(iii)
discriminate
between
rotting
ones.
We
used
model
system
composed
blueberries
tested
two-choice
olfactometer
bioassays
(with
suzukii-infested
fruits,
healthy
pure
air
as
odor
targets),
followed
collection
characterization
volatile
organic
compounds
(VOCs)
released
targets.
results
showed
clear
time-dependent
choice
made
versus
related
concomitant
development
fruit
degradation.
Attraction
was
recorded
during
early
stages
infestation,
repellent
phase
coinciding
with
largely
degraded
feeding.
found
attractiveness
towards
young
associated
detection
VOCs
blueberries,
host's
cuticular
hydrocarbons.
Conversely,
repellence
older
deteriorated
hosting
developed
fermentation
compound
produced
microorganisms
likely
carried
inside
flies.
response
temporal
dynamics
emitted
fruit–host
complex
consistent
specificity
suzukii.
