Nature Communications,
Journal Year:
2023,
Volume and Issue:
14(1)
Published: March 20, 2023
Female
fruit
flies
(Drosophila
melanogaster)
oviposit
at
communal
sites
where
the
larvae
may
cooperate
or
compete
for
resources
depending
on
group
size.
This
offers
a
model
system
to
determine
how
females
assess
quantitative
social
information.
We
show
that
concentration
of
pheromones
found
substrate
increases
linearly
with
number
adult
have
visited
site.
Females
prefer
oviposition
pheromone
concentrations
corresponding
an
intermediate
previous
visitors,
whereas
low
high
are
unattractive.
dose-dependent
decision
is
based
blend
11-cis-Vaccenyl
Acetate
(cVA)
indicating
visitors
and
heptanal
(a
novel
deriving
from
oxidation
7-Tricosene),
which
acts
as
dose-independent
co-factor.
response
mediated
by
detection
cVA
odorant
receptor
neurons
Or67d
Or65a,
least
five
different
heptanal.
Our
results
identify
mechanism
allowing
individuals
transform
linear
increase
into
non-linear
behavioral
response.
Proceedings of the National Academy of Sciences,
Journal Year:
2010,
Volume and Issue:
107(46), P. 20051 - 20056
Published: Nov. 1, 2010
Development
of
mating
preference
is
considered
to
be
an
early
event
in
speciation.
In
this
study,
was
achieved
by
dividing
a
population
Drosophila
melanogaster
and
rearing
one
part
on
molasses
medium
the
other
starch
medium.
When
isolated
populations
were
mixed,
"molasses
flies"
preferred
mate
with
flies
"starch
flies.
The
appeared
after
only
generation
maintained
for
at
least
37
generations.
Antibiotic
treatment
abolished
preference,
suggesting
that
fly
microbiota
responsible
phenomenon.
This
confirmed
infection
experiments
obtained
from
media
(before
antibiotic
treatment)
as
well
mixed
culture
Lactobacillus
species
pure
plantarum
Analytical
data
suggest
symbiotic
bacteria
can
influence
changing
levels
cuticular
hydrocarbon
sex
pheromones.
results
are
discussed
within
framework
hologenome
theory
evolution.
Neuron,
Journal Year:
2011,
Volume and Issue:
69(3), P. 498 - 508
Published: Feb. 1, 2011
We
determined
the
cellular
substrate
for
male
courtship
behavior
by
quasinatural
and
artificial
stimulation
of
brain
neurons.
Activation
fruitless
(fru)-expressing
neurons
via
thermosensitive
dTrpA1
channels
induced
an
entire
series
acts
in
Drosophila
placed
alone
without
any
courting
target.
By
reducing
number
expressing
MARCM,
we
demonstrated
that
initiation
is
significantly
correlated
with
activation
transmidline
P1
interneurons,
descending
P2b
or
both,
indicating
these
interneurons
trigger
courtship.
Using
experimental
paradigm
which
a
tethered
can
be
stimulated
to
initiate
touching
his
foreleg
tarsus
female's
abdomen,
found
neurites
males
showed
transient
Ca2+
rise
after
tarsal
female-associated
sensory
cues.
These
observations
strongly
suggest
are
prime
components
neural
circuitry
initiates
Proceedings of the National Academy of Sciences,
Journal Year:
2015,
Volume and Issue:
112(21)
Published: May 11, 2015
Intraspecific
olfactory
signals
known
as
pheromones
play
important
roles
in
insect
mating
systems.
In
the
model
Drosophila
melanogaster,
a
key
part
of
pheromone-detecting
system
has
remained
enigmatic
through
many
years
research
terms
both
its
behavioral
significance
and
activating
ligands.
Here
we
show
that
Or47b-and
Or88a-expressing
sensory
neurons
(OSNs)
detect
fly-produced
odorants
methyl
laurate
(ML),
myristate,
palmitate.
Fruitless
(fru(M))-positive
Or47b-expressing
OSNs
ML
exclusively,
Or47b-
are
required
for
optimal
male
copulation
behavior.
addition,
activation
is
sufficient
to
provide
competitive
advantage.
We
further
find
vigorous
courtship
displayed
toward
oenocyte-less
flies
attributed
an
oenocyte-independent
sustained
production
Or47b
ligand,
ML.
reveal
respond
all
three
compounds,
these
necessary
attraction
behavior
males
females.
Beyond
OSN
level,
information
regarding
fly
transferred
from
antennal
lobe
higher
brain
centers
two
dedicated
neural
lines.
Finally,
Or88a-based
systems
their
ligands
remarkably
conserved
over
number
drosophilid
species.
Taken
together,
our
results
close
significant
gap
understanding
background
behavior;
while
reproductive
isolation
barriers
between
species
created
mainly
by
species-specific
signals,
enhancing
signal
several
conserved.
