Nature Communications,
Journal Year:
2017,
Volume and Issue:
8(1)
Published: July 21, 2017
Animals
execute
one
particular
behavior
among
many
others
in
a
context-dependent
manner,
yet
the
mechanisms
underlying
such
behavioral
choice
remain
poorly
understood.
Here
we
studied
how
two
fundamental
behaviors,
sex
and
sleep,
interact
at
genetic
neuronal
levels
Drosophila.
We
show
that
an
increased
need
for
sleep
inhibits
male
sexual
by
decreasing
activity
of
male-specific
P1
neurons
coexpress
determination
genes
fru
M
dsx,
but
does
not
affect
female
behavior.
Further,
delineate
sex-specific
circuit
wherein
encoding
courtship
drive
suppressed
forming
mutually
excitatory
connections
with
-positive
sleep-controlling
DN1
neurons.
In
addition,
find
FRUM
regulates
through
distinct
neural
substrates.
These
studies
reveal
basis
interaction
between
behaviors
Drosophila,
provide
insights
into
competing
are
co-regulated.Genes
circuits
involved
arousal
have
been
extensively
authors
identify
fruitless
doublesex,
P1-DN1
feedback
governs
these
behaviors.
Cell,
Journal Year:
2023,
Volume and Issue:
186(12), P. 2556 - 2573.e22
Published: May 25, 2023
In
Drosophila,
a
dedicated
olfactory
channel
senses
male
pheromone,
cis-vaccenyl
acetate
(cVA),
promoting
female
courtship
while
repelling
males.
Here,
we
show
that
separate
cVA-processing
streams
extract
qualitative
and
positional
information.
cVA
sensory
neurons
respond
to
concentration
differences
in
5-mm
range
around
male.
Second-order
projection
encode
the
angular
position
of
by
detecting
inter-antennal
concentration,
which
are
amplified
through
contralateral
inhibition.
At
third
circuit
layer,
identify
47
cell
types
with
diverse
input-output
connectivity.
One
population
responds
tonically
flies,
second
is
tuned
looming,
integrates
taste
coincidentally
promote
mating.
The
separation
features
resembles
mammalian
what
where
visual
streams;
together
multisensory
integration,
this
enables
behavioral
responses
appropriate
specific
ethological
contexts.
Current Biology,
Journal Year:
2024,
Volume and Issue:
34(4), P. 808 - 824.e6
Published: Jan. 30, 2024
Many
motor
control
systems
generate
multiple
movements
using
a
common
set
of
muscles.
How
are
premotor
circuits
able
to
flexibly
diverse
movement
patterns?
Here,
we
characterize
the
neuronal
that
drive
distinct
courtship
songs
Drosophila
melanogaster.
Male
flies
vibrate
their
wings
toward
females
produce
two
different
song
modes—pulse
and
sine
song—which
signal
species
identity
male
quality.
Using
cell-type-specific
genetic
reagents
connectome,
provide
cellular
synaptic
map
in
ventral
nerve
cord
these
examine
how
activating
or
inhibiting
each
cell
type
within
affects
song.
Our
data
reveal
circuit
is
organized
into
nested
feedforward
pathways
with
extensive
reciprocal
feedback
connections.
The
larger
network
produces
pulse
song,
more
complex
ancestral
form.
A
subset
this
simpler
recent
Such
organization
may
be
feature
which
evolution
has
layered
increasing
flexibility
onto
basic
pattern.
The
ability
to
distinguish
males
from
females
is
essential
for
productive
mate
selection
and
species
propagation.
Recent
studies
in
Drosophila
have
identified
different
classes
of
contact
chemosensory
neurons
that
detect
female
or
male
pheromones
influence
courtship
decisions.
Here,
we
examine
central
neural
pathways
the
brain
process
using
anatomical,
calcium
imaging,
optogenetic,
behavioral
studies.
We
find
sensory
pheromones,
but
not
activate
a
novel
class
ventral
nerve
cord
cause
activation
P1
neurons,
male-specific
command
trigger
courtship.
In
addition,
as
well
those
mAL
inhibit
P1.
These
demonstrate
balance
excitatory
inhibitory
drives
onto
courtship-promoting
controls
mating
Annual Review of Neuroscience,
Journal Year:
2017,
Volume and Issue:
40(1), P. 327 - 348
Published: April 25, 2017
Animals
are
born
with
a
rich
repertoire
of
robust
behaviors
that
critical
for
their
survival.
However,
innate
also
highly
adaptable
to
an
animal's
internal
state
and
external
environment.
Neuromodulators,
including
biogenic
amines,
neuropeptides,
hormones,
released
signal
changes
in
animals'
circumstances
serve
reconfigure
neural
circuits.
This
circuit
flexibility
allows
animals
modify
behavioral
responses
according
environmental
cues,
metabolic
demands,
physiological
states.
Aided
by
powerful
genetic
tools,
researchers
have
made
remarkable
progress
Drosophila
melanogaster
address
how
myriad
contextual
information
influences
the
input-output
relationship
hardwired
circuits
support
complex
repertoire.
Here
we
highlight
recent
advances
understanding
neuromodulation
behaviors,
special
focus
on
feeding,
courtship,
aggression,
postmating
behaviors.