Frontiers in Microbiology,
Год журнала:
2019,
Номер
10
Опубликована: Авг. 23, 2019
The
Asian
citrus
psyllid
(Diaphorina
citri)
is
a
major
pest
of
trees
as
it
transmits
Candidatus
Liberibacter
asiaticus
(CLas).
composition
host's
microbiota
can
affect
the
evolution
and
ecological
distribution
host.
This
study
monitored
compositional
shifts
in
through
all
life
stages
(egg,
nymph
1–5
stages,
adult)
by
next-generation
sequencing
quantitative
real-time
PCR.
There
were
clear
differences
both
α-
β-diversity
stages.
Microbiota
diversity
was
markedly
higher
2–5
than
adult,
egg,
1
Proteobacteria
dominant
D.
citri,
representing
>
97.5%
total
bacterial
community,
Profftella
armature
genus
Data
from
qPCR
analysis
showed
an
exponential
increase
populations
three
citri
endosymbionts:
armature,
Carsonella
ruddii,
Wolbachia.
gut
bacterium
Pantoea
present
but
2-5
substantially
differed
among
egg–nymph
1,
nymphs
2–5,
adult
Therefore,
we
successfully
characterized
dynamics
thus
identified
shift
during
cycle
16S
rRNA
gene
Moreover,
suggested
that
acquired
ability
to
bear
CLas
at
stage.
enhances
our
understanding
microbial
establishment
developing
provides
reference
resource
for
identification
potential
biocontrol
approaches
against
this
pest.
Biomolecules,
Год журнала:
2023,
Номер
13(6), С. 997 - 997
Опубликована: Июнь 15, 2023
Agricultural
crop
productivity
relies
on
the
application
of
chemical
pesticides
to
reduce
pest
and
pathogen
damage.
However,
also
pose
a
range
ecological,
environmental
economic
penalties.
This
includes
development
pesticide
resistance
by
insect
pests
pathogens,
rendering
less
effective.
Alternative
sustainable
protection
tools
should
therefore
be
considered.
Semiochemicals
are
signalling
molecules
produced
organisms,
including
plants,
microbes,
animals,
which
cause
behavioural
or
developmental
changes
in
receiving
organisms.
Manipulating
semiochemicals
could
provide
more
approach
management
pathogens
across
crops.
Here,
we
review
role
interaction
between
insects
examples
how
they
have
been
applied
agricultural
systems.
We
highlight
future
research
priorities
considered
for
credible
alternatives
pesticides.
Insects,
Год журнала:
2019,
Номер
10(7), С. 200 - 200
Опубликована: Июль 6, 2019
Worldwide
monitoring
programs
of
the
invasive
fruit
pest
Drosophila
suzukii
Matsumura
(Diptera:
Drosophilidae),
using
fermentation
baits
like
apple
cider
vinegar
(ACV),
revealed
a
counterintuitive
period
low
trap
catches
during
summer,
followed
by
an
autumn
peak.
In
this
study,
we
demonstrate
that
ACV
baited
traps
indeed
provide
distorted
image
D.
population
dynamics
as
it
is
possible
to
capture
higher
numbers
"low
period"
with
synthetic
lures.
It
was
hypothesised
preference
populations
for
cues
most
pronounced
autumn,
winter
and
spring,
while
flies
prefer
fresh
summer
seasonal
related
changing
physiology
over
season.
To
test
hypothesis,
between
(ACV)
host
fruits
(strawberries)
effect
(sex,
morphology
feeding,
mating
reproductive
status)
investigated
both
in
olfactometer
laboratory
experiments
year-round
field
experiment.
demonstrated
protein
deprived
females,
virgin
females
full
complement
unfertilised
eggs
males
show
strong
fully
fed
morph
generally
cues.
These
findings
indicate
attracted
volatiles
search
(protein-rich)
food
oviposition
substrates.
Winter
starved
displayed
indiscriminating
olfactory
behaviour.
experiment,
shift
confirmed.
This
appeared
be
highly
temperature-related
similarly
observed
morphs.
Journal of Applied Entomology,
Год журнала:
2019,
Номер
143(6), С. 593 - 608
Опубликована: Март 28, 2019
Abstract
Spotted‐wing
drosophila,
Drosophila
suzukii
(Matsumura),
is
an
invasive
pest
affecting
fruit
production
in
many
regions
of
the
world.
Insecticides
are
primary
tactic
for
controlling
D.
organic
as
well
conventional
systems.
Organic
growers
have
a
greater
challenge
because
fewer
insecticides
approved
use
agriculture.
The
most
effective
organically
product
spinosad,
but
alternatives
needed
label
restrictions
limiting
number
applications
per
year,
toxicity
to
beneficial
arthropods
and
risk
developing
resistance.
We
evaluated
several
against
laboratory
assays
field
trials
conducted
on
blueberry
raspberry
farms.
Spinosad
was
consistently
insecticide,
few
other
such
azadirachtin
+
pyrethrins,
Chromobacterium
subtsugae
sabadilla
alkaloids
showed
moderate
activity.
None
treatments
had
long
residual
Mortality
started
decline
by
3
days
after
treatment,
5
application,
were
not
different
from
controls.
These
products
may
be
useful
rotation
programmes,
necessary
reducing
reliance
spinosad
mitigating
Cultural
biological
control
approaches
management,
will
likely
continue
dominant
management
while
these
being
optimized
adopted.
Abstract
Larval
Drosophila
encounter
and
feed
on
a
diverse
microbial
community
within
fruit.
In
particular,
free-living
yeast
microbes
provide
source
of
dietary
protein
critical
for
development.
However,
successional
changes
to
the
fruit
may
alter
host
quality
through
impacts
relative
content
or
composition.
For
many
species
,
fitness
benefits
from
feeding
vary
between
individual
species,
indicating
differences
in
nutritional
quality.
To
better
understand
these
associations,
we
evaluated
how
five
impacted
preference
development
larval
suzukii
.
Larvae
exhibited
strong
attraction
Hanseniaspora
uvarum
pairwise
assays.
larvae
also
performed
most
poorly
diets
containing
H.
mismatch
performance
that
suggests
are
not
primary
factor
driving
behavior.
Together,
results
demonstrate
plays
role
D.
’s
ecology
have
developed
specific
associations.
Further
inquiry,
including
systematic
comparisons
associations
more
broadly,
will
be
necessary
patterns
resource
use
other
frugivorous
species.
Abstract
Drosophila
suzukii
Matsumura
(Diptera:
Drosophilidae)
is
a
significant
invasive
pest
in
soft-skin
fruits
and
berries
Asia,
Europe,
North
South
America.
Many
herbivorous
insects
use
multiple
cues
for
host
selection,
particularly
olfactory
visual
stimuli.
The
system
of
closely-related
melanogaster
well-documented,
expressing
strong
sensitivity
to
short-wavelength
colors
(ultraviolet
green)
only
limited
long-wavelength
(red
infrared).
Our
results
suggest
that
D.
have
ability
distinguish
red
consistent
with
range
within
the
subgroup.
We
propose
color
contrast
rather
than
appearance
may
be
greater
importance
orientation
attraction.
differences
reflectance
between
light
wavelengths
important
opponency
are
key
discrimination
provide
foreground
background,
as
occurs
fruit
foliage,
during
host-finding.
Journal of Chemical Ecology,
Год журнала:
2024,
Номер
50(11), С. 830 - 846
Опубликована: Май 1, 2024
Abstract
Chemical
control
of
Drosophila
suzukii
(Diptera:
Drosophilidae)
based
on
the
use
insecticides
is
particularly
challenging
as
insect
attacks
ripening
fruits
shortly
before
harvest.
An
alternative
strategy
may
rely
yeasts
phagostimulants
and
baits,
applied
canopy
attract-and-kill
formulations.
The
aim
this
research
was
to
identify
most
attractive
among
six
yeast
species
for
D.
:
Saccharomyces
cerevisiae
,
Hanseniaspora
uvarum
Clavispora
santaluciae
Saccharomycopsis
vini
Issatchenkia
terricola
Metschnikowia
pulcherrima
.
volatile
profile
C
described
first
time.
Behavioural
experiments
identified
H.
S.
yeasts.
characterization
headspace
volatiles
using
direct
(DHS)
solid-phase
microextraction
(SPME)
revealed
several
strain-specific
compounds.
With
DHS
injection,
19
were
characterised,
while
SPME
71
compounds
constituting
headspace.
Both
analyses
terpenoids
including
β-ocimene,
citronellol,
(
Z
)-geraniol
(nerol),
geranial
distinct
constituents
further
investigated
closed-loop
stripping
analysis
(CSLA)
electroantennography.
Out
14
quantified
by
CSLA,
ethyl
acetate,
isoamyl
β-myrcene,
benzaldehyde
linalool
detected
antennae
might
generate
strong
attractiveness
uvarum.
Our
results
highlight
a
attraction
various
associated
with
both
flies
their
habitat
demonstrate
how
different
sampling
methods
can
impact
compound
characterization.
It
remains
be
demonstrated
whether
special
adaptations
certain
what
extent
metabolites
causing
are
interchangeable.
PLoS ONE,
Год журнала:
2017,
Номер
12(11), С. e0188350 - e0188350
Опубликована: Ноя. 17, 2017
The
improvement
of
trap-lure
combinations
is
an
important
part
integrated
pest
management
programs
that
involve
monitoring
pests
for
timely
insecticide
applications,
or
their
use
in
control
strategies
such
as
mass
trapping
bait
stations.
In
this
study
improvements
the
capture
Drosophila
suzukii
were
not
observed
following
inclusion
different
color
stimuli
with
respect
to
a
red-black
stripe
cup
trap.
This
trap
hemispherical
dome-shaped
lid
had
significantly
improved
physical
retention
flies
compared
traps
fitted
flat
lid.
Retention
was
further
when
additional
tube
device,
which
could
be
baited
supplemental
attractant,
introduced
through
Under
laboratory
conditions,
trap,
apple
cider
vinegar
+
10%
ethanol
present
drowning
solution
and
device
fermenting
mixture
sugar
yeast,
more
effective
catching
D.
than
other
conventional
attractants
commercial
lure.
rate
combination
remained
higher
lure,
even
after
20
days
under
conditions.
guava
orchard
15-fold
similar
alone,
4
7
fold
1.7-fold
yeasts
wheat
flour.
blackberry
orchards,
6-fold
clear
used
by
growers.
efficacy
presents
promising
line
future
research
likely
drosophilid
pests.