Oviposition decisions under environment-induced physiological stress in parasitoids
Current Opinion in Insect Science,
Год журнала:
2024,
Номер
65, С. 101240 - 101240
Опубликована: Июль 29, 2024
Язык: Английский
Finding an egg in a haystack: variation in chemical cue use by egg parasitoids of herbivorous insects
Current Opinion in Insect Science,
Год журнала:
2022,
Номер
55, С. 101002 - 101002
Опубликована: Дек. 16, 2022
Egg
parasitoids
of
herbivorous
insects
use
an
interplay
short-
and
long-range
chemical
cues
emitted
by
hosts
host
plants
to
find
eggs
parasitize.
Volatile
compounds
that
attract
egg
can
be
identified
via
behavioral
assays
used
manipulate
parasitoid
behavior
in
the
field
for
biological
control
pests.
However,
how
when
a
particular
cue
will
varies
over
life
individual,
as
well
at
below
species
level.
Future
research
should
expand
taxonomic
coverage
explore
variation
more
natural,
dynamic
settings.
More
nuanced
understanding
variability
host-finding
strategies
aid
disentangling
underlying
genetics
further
enhancing
control.
Язык: Английский
Insight into the host-specificity of a native and a newly introduced parasitoid of Tuta absoluta and prospect for biological control
Biological Control,
Год журнала:
2024,
Номер
191, С. 105464 - 105464
Опубликована: Фев. 16, 2024
New
strategies
are
urgently
needed
to
control
Tuta
absoluta
(Meyrick)
(Lepidoptera:
Gelechiidae),
one
of
the
most
destructive
pests
tomato
crops.
Originating
from
South
America,
it
is
spreading
rapidly
and
has
evolved
resistance
common
insecticides
making
highly
challenging
control.
Regarding
biological
control,
parasitoid
Necremnus
tutae
Ribes
&
Bernardo
(Hymenoptera:
Eulophidae)
widely
present
around
Mediterranean
basin
adapted
invader
playing
a
substantial
role
in
its
In
addition,
neotropical
Dolichogenidea
gelechiidivoris
Marsh
Braconidae)
established
accidentally
following
host
Spain
Algeria
classical
program
using
this
species
ongoing
Sub-Saharan
Africa.
Understanding
trophic
connections
between
D.
gelechiidivoris,
N.
tutae,
targeted
T.
potential
non-target
hosts
essential
assess
their
value
as
augmentative
or
agents
promote
establishment
conservation
biocontrol.
We
conducted
host-specificity
tests
laboratory
four
European
leafminer
evaluate
specificity
these
two
parasitoids
absoluta.
then
assessed
affinity
for
by
exposing
sentinel
plants
with
alternative
Phthorimaea
operculella
(Zeller)
Gelechiidae)
inside
greenhouses
measuring
each
species'
field
parasitism
rate.
Our
results
show
that
tested
laboratory,
attacked
three,
while
only
P.
operculella.
greenhouse,
did
not
prefer
absoluta,
whereas
preferred
latter.
The
mean
rate
over
three
months
monitoring
period
reached
27
%
35
gelechiidivoris.
discuss
importance
understanding
effects
natural
enemy
can
have
Язык: Английский
How exposure to a neonicotinoid pesticide affects innate and learned close-range foraging behaviour of a classical biological control agent
Biological Control,
Год журнала:
2024,
Номер
196, С. 105568 - 105568
Опубликована: Июнь 28, 2024
While
foraging
in
agricultural
habitats,
natural
enemies,
such
as
egg
parasitoids,
may
encounter
insecticide
residues,
which,
if
not
lethal,
can
alter
host
location
behaviour
and
learning
capacity.
Such
interference
reduce
the
potential
of
biological
control
agents,
especially
exotic
species
which
are
released
small
numbers
a
new
environment
first
need
to
establish
build
up
their
populations.
Several
studies
have
investigated
lethal
effects
pesticides
on
but
less
information
is
available
about
non-lethal
consequences,
no
effect
associative
parasitoids.
The
parasitoid
Trissolcus
japonicus
(Ashmed)
(Hymenoptera:
Scelionidae)
agent
invasive
brown
marmorated
stink
bug,
Halyomorpha
halys
(Stål)
(Hemiptera:
Pentatomidae).
We
hypothesised
that
low
concentration
(causing
20
%
mortality)
commonly
used
neonicotinoid
(acetamiprid)
alters
capacity
T.
exploit
chemical
traces
left
by
reproductive
females
either
main
host,
H.
halys,
or
an
alternative
Arma
custos
(F.)
In
open
arena
bioassays,
responded
positively
both
bug
species.
Following
oviposition
experience
with
(associative
learning),
reduced
time.
Parasitoids
previously
exposed
showed
changes
behaviour,
increased
residence
time
spent
host-contaminated
area
altered
kinetics
walking
behaviour.
Neonicotinoid
exposition
did
affect
ability
1
h
after
prolonged
memory
retention.
female
its
this
should
be
considered
when
attempting
establishment
introduction
areas.
Язык: Английский
Three‐dimensional flight analysis shows associative learning enhances foraging behavior of the specialist parasitoid, Microplitis croceipes
Entomologia Experimentalis et Applicata,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 20, 2025
Abstract
The
reproductive
fitness
of
parasitoids
is
dependent
on
their
ability
to
find
optimal
hosts
for
oviposition
and
nectar/honeydew
as
a
sugar
source
survival
reproduction.
Learning
ecologically
relevant
odors
helps
refine
foraging
behavior
enhance
success.
However,
little
known
about
how
associative
learning
may
help
optimize
flight
while
food
and/or
hosts.
This
study
compared
the
inflight
behavioral
responses
naïve
experienced
Microplitis
croceipes
(Cresson)
(Hymenoptera:
Braconidae)
toward
two
relevant,
host‐related
volatile
compounds,
α‐pinene
α‐farnesene.
Using
wind
tunnel
bioassays,
we
tested
hypothesis
that
would
improve
M.
females,
resulting
in
oriented
motivated
odor
sources.
A
tracking
software,
which
records
insects
three
dimensions,
was
used
track
behaviors
(α‐pinene
α‐farnesene)
compare
flight‐related
parameters
(response
time,
time
upwind
flight,
speed,
angular
velocity,
tortuosity).
results
showed
significantly
improved
females.
Odor
resulted
more
directly
sources
In
addition,
comparisons
individual
revealed
enables
adapt
specific
cues,
thereby
increasing
responsiveness
attractiveness
learned
odor.
These
findings
highlight
adaptive
significance
during
host
location
strategies
parasitoids.
Язык: Английский
An expanded odorant-binding protein mediates host cue detection in the parasitic wasp Baryscapus dioryctriae basis of the chromosome-level genome assembly analysis
BMC Biology,
Год журнала:
2024,
Номер
22(1)
Опубликована: Сен. 11, 2024
Язык: Английский
Phytophagy of Nesidiocoris tenuis triggers the response of Trichogramma achaeae to tomato plants infested by Tuta absoluta
Journal of Pest Science,
Год журнала:
2023,
Номер
97(1), С. 323 - 333
Опубликована: Июнь 14, 2023
Abstract
The
generalist
predator
Nesidiocoris
tenuis
,
an
effective
biological
control
agent
of
numerous
pests
the
tomato
crops,
can
also
trigger
plant
defence
mechanisms
(direct
and
indirect)
due
to
its
phytophagous
behaviour.
In
southern
Europe,
is
frequently
released
in
greenhouses
invasive
pest
Tuta
absoluta
sometimes
combined
with
another
biocontrol
agent,
egg
parasitoid
Trichogramma
achaeae
.
this
study,
using
olfactometer
bioassays,
we
showed
that
modification
volatile
chemical
profile
induced
by
feeding
activity
mirid
made
plants
more
attractive
T.
achaeae,
both
absence
presence
eggs
or
larvae.
This
result
was
discussed
relation
difference
observed
among
profiles
organic
compounds
punctured
N.
without
combination
infestation.
We
found
a
few
(
e.g.
β
-pinene
myrcene)
could
play
role
foraging
behaviour
scenario
Overall,
our
data
support
emerging
idea
ecological
addition
predatory
activity,
making
crops
resilient
against
attack
pests,
including
absoluta.
Язык: Английский
Wolbachia titers are relate to sex determination of Trichogramma pretiosum
Journal of Pest Science,
Год журнала:
2024,
Номер
unknown
Опубликована: Янв. 29, 2024
Язык: Английский
Chemotactic responses and parasitism of Trichogramma pretiosum after successive generations in Spodoptera frugiperda
Entomologia Experimentalis et Applicata,
Год журнала:
2023,
Номер
172(1), С. 58 - 65
Опубликована: Ноя. 3, 2023
Abstract
Trichogramma
pretiosum
Riley
(Hymenoptera:
Trichogrammatidae)
is
an
important
parasitoid
of
lepidopteran
pests.
Its
parasitism
success
related
to
its
foraging
behavior,
mediated
by
kairomones
from
hosts.
We
aimed
evaluate
the
chemotactic
responses
and
T.
Ephestia
kuehniella
(Zeller)
(Lepidoptera:
Pyralidae)
eggs
as
well
maintained
for
three
generations
in
Spodoptera
frugiperda
(Smith)
Noctuidae)
eggs.
Chemotactic
both
hosts
were
evaluated
a
dual
choice
olfactometer.
Females
submitted
between
washed
vs.
unwashed
E.
or
S.
,
Egg
extracts
also
contrasted
with
hexane
each
other.
Parasitism
exposed
two
species
was
evaluated.
more
attracted
odors
this
host
whenever
it
present.
Third
generation
parasitoids
egg
extract
than
those
.
The
highest
number
parasitized
emerged
observed
coming
third
host.
Therefore,
imaginal
conditioning
could
be
alternative
considered
learning
before
releasing,
possibly
optimizing
search
process
Язык: Английский