iScience,
Год журнала:
2022,
Номер
25(11), С. 105255 - 105255
Опубликована: Окт. 2, 2022
Female
but
not
male
mosquitoes
are
vectors
for
multiple
deadly
human
diseases
including
malaria,
dengue,
yellow
fever,
and
West
Nile
virus.
However,
the
underlying
neural
substrates
of
sexually
dimorphic
behaviors
remain
largely
unknown
in
mosquitoes.
In
this
study,
we
found
striking
sexual
dimorphism
brain
regions
two
major
disease
vectors,
Aedes
aegypti
Culex
quinquefasciatus,
through
voxel-wise
comparison
whole
brain.
Female-enlarged
include
those
associated
with
chemosensation
vision,
while
male-enlarged
linked
to
hearing
memory.
some
vision
memory
Ae.
Cx.
quinquefasciatus.
As
first
global
voxel-based
comparative
neuroanatomical
analysis
mosquito
brains
between
sexes,
study
only
sheds
light
on
sex-specific
behaviors,
also
identifies
interest
future
research
disrupt
female-specific
critical
transmission.
Parasites & Vectors,
Год журнала:
2023,
Номер
16(1)
Опубликована: Авг. 4, 2023
Olfaction
plays
an
important
role
in
the
selection
and
assessment
of
oviposition
sites
by
mosquitoes.
Volatile
organic
compounds
(VOCs)
associated
with
potential
breeding
affect
behaviour
gravid
mosquitoes,
VOCs
from
aquatic
stages
conspecific
mosquitoes
influencing
regulating
oviposition.
The
purpose
this
study
was
to
conduct
a
systematic
analysis
behavioural
response
Aedes
aegypti
stage-conditioned
water,
identify
bioactive
determine
how
blends
these
regulate
site
stimulate
egg-laying.
Using
multi-choice
olfactory
assay,
controlling
for
other
sensory
modalities,
responses
individual
females
water
conditioned
different
densities
were
assessed.
samples
most
preferred
density
each
stage
subsequently
compared
using
same
assay
analysed
variance
(ANOVA)
followed
Tukey
post-hoc
test.
combined
gas
chromatography
electroantennographic
detection
or
mass
spectrometry,
identified.
Synthetic
prepared
based
on
identified
ratios
stages,
then
tested
choice
Ae.
dose-dependent
manner,
against
solvent
control,
dual-choice
assay.
This
dataset
nominal
logistic
regression
odds
ratio
comparison.
Gravid
responded
stage-
density-dependently
eggs,
second-
fourth-instar
larvae,
pupal
exuviae,
but
not
pupae
alone.
Multi-choice
assays
demonstrated
that
oviposit
over
water.
attracted,
generally
stimulated,
manner
synthetic
odour
stages.
Intraspecific
density-dependent
manner.
We
discuss
need
further
studies
evaluate
modulate
odour-mediated
under
field
conditions.
Frontiers in Tropical Diseases,
Год журнала:
2024,
Номер
5
Опубликована: Март 18, 2024
Introduction
Previously,
we
documented
that
the
malaria
vector
Anopheles
gambiae
responds
to
volatile
emissions
from
root
exudate
water
of
invasive
plant,
Parthenium
hysterophorus
.
However,
origin
volatiles
remains
be
investigated.
Here,
isolated
bacteria
test
influence
their
in
gravid
An.
oviposition,
and
examined
relationships
between
profiles
oviposition.
Methods
Bacteria
P.
were
using
culture
on
Luria
Bertani
medium
identified
by
sequencing
16S
rRNA
gene.
Cultures
individual
isolates
evaluated
for
egg
laying
response
number
eggs
laid
compared
generalized
linear
models
relative
those
crude
bacteria-mixture.
Headspace
bacterial
analyzed
gas
chromatography
coupled
mass
spectrometry
(GC-MS)
organic
compound
(VOC)
mosquito
oviposition
Random
Forest
Analysis.
Proximate
analysis
was
performed
assess
difference
chemistry
among
different
isolates.
Results
Three
as
Gram-negative
belonging
two
families:
Enterobacteriaceae
(
Enterobacter
sp.
mori
)
Alcaligenaceae
Alcaligens
aquatilis
).
3-fold
more
cultures
A.
than
In
turn,
approx.
4-fold
E.
Overall,
16
VOCs
headspace
chemical
classes
benzenoids,
pyrazines,
aldehydes,
terpenes,
alcohols,
alkanes,
indoles.
Analysis
10
compounds
contributing
most
attraction
odors
Specifically,
dodecane
indole
emitted
higher
amounts
sp
other
species.
revealed
differential
associated
with
profiles.
Conclusion
Our
results
provide
first
report
or
mediating
attractive
responses
support
important
role
microbes
play
insect
The
potential
use
management
needs
further
investigation.
Insects,
Год журнала:
2024,
Номер
15(8), С. 572 - 572
Опубликована: Июль 28, 2024
Plants
communicate
with
insects
and
other
organisms
through
the
release
of
volatile
organic
compounds
(VOCs).
Using
Boolean
operators,
we
retrieved
1093
articles
from
Web
Science
Scopus
databases,
selecting
406
for
detailed
analysis,
approximately
50%
focusing
on
herbivore-induced
plant
volatiles
(HIPVs).
This
review
examines
roles
VOCs
in
direct
indirect
defense
mechanisms
their
influence
complex
communication
networks
within
ecosystems.
Our
research
reveals
significant
functions
four
principal
areas:
activating
insect
antennae,
attracting
adult
insects,
female
natural
enemies.
Terpenoids
like
α-pinene
β-myrcene
significantly
alter
pest
behavior
by
β-ocimene
β-caryophyllene
are
crucial
regulating
aboveground
belowground
interactions.
We
emphasize
potential
applications
agriculture
developing
novel
control
strategies
enhancing
crop
resilience.
Additionally,
identify
gaps
propose
new
directions,
stressing
importance
comparative
studies
across
ecosystems
long-term
observational
to
better
understand
dynamics.
In
conclusion,
provide
insights
into
multifunctionality
ecosystems,
future
applications,
role
advancing
sustainable
agricultural
ecological
practices,
contributing
a
deeper
understanding
functions.
iScience,
Год журнала:
2022,
Номер
25(11), С. 105255 - 105255
Опубликована: Окт. 2, 2022
Female
but
not
male
mosquitoes
are
vectors
for
multiple
deadly
human
diseases
including
malaria,
dengue,
yellow
fever,
and
West
Nile
virus.
However,
the
underlying
neural
substrates
of
sexually
dimorphic
behaviors
remain
largely
unknown
in
mosquitoes.
In
this
study,
we
found
striking
sexual
dimorphism
brain
regions
two
major
disease
vectors,
Aedes
aegypti
Culex
quinquefasciatus,
through
voxel-wise
comparison
whole
brain.
Female-enlarged
include
those
associated
with
chemosensation
vision,
while
male-enlarged
linked
to
hearing
memory.
some
vision
memory
Ae.
Cx.
quinquefasciatus.
As
first
global
voxel-based
comparative
neuroanatomical
analysis
mosquito
brains
between
sexes,
study
only
sheds
light
on
sex-specific
behaviors,
also
identifies
interest
future
research
disrupt
female-specific
critical
transmission.
