iScience,
Год журнала:
2024,
Номер
28(2), С. 111695 - 111695
Опубликована: Дек. 27, 2024
Cricket
song
recognition
is
thought
to
evolve
through
modifications
of
a
shared
neural
network.
However,
the
species
Anurogryllus
muticus
has
an
unusual
pattern
that
challenges
this
view:
females
respond
both
normal
male
pulse
periods
and
twice
as
long.
Of
three
minimal
models
tested,
only
single-neuron
model
with
oscillating
membrane
could
explain
behavior.
A
cricket's
network
reproduced
behavior
after
adding
mechanism
that,
while
present
in
full
network,
not
crucial
for
other
species.
This
shows
how
can
produce
diverse
behaviors
highlights
different
computations
contribute
evolution.
Our
results
also
demonstrate
nonlinear
lead
rapid
behavioral
changes
during
evolution
because
small
parameters
large
Nature,
Год журнала:
2024,
Номер
635(8037), С. 142 - 150
Опубликована: Окт. 9, 2024
Mate
recognition
systems
evolve
rapidly
to
reinforce
the
reproductive
boundaries
between
species,
but
underlying
neural
mechanisms
remain
enigmatic.
Here
we
leveraged
rapid
coevolution
of
female
pheromone
production
and
male
perception
in
Drosophila1,2
gain
insight
into
how
architecture
mate
circuits
facilitates
their
diversification.
While
some
Drosophila
species
females
produce
unique
pheromones
that
act
arouse
conspecific
males,
most
are
sexually
monomorphic
such
possess
no
distinguishing
chemosensory
signatures
males
can
use
for
recognition3.
We
show
yakuba
evolved
ability
a
pheromone,
7-tricosene,
as
an
excitatory
cue
promote
courtship.
By
comparing
key
nodes
across
multiple
reveal
this
sensory
innovation
arises
from
coordinated
peripheral
central
circuit
adaptations:
distinct
subpopulation
neurons
has
acquired
sensitivity
7-tricosene
and,
turn,
selectively
signals
subset
P1
brain
trigger
Such
modular
organization,
which
different
inputs
independently
couple
parallel
courtship
control
nodes,
may
facilitate
evolution
by
allowing
novel
modalities
become
linked
arousal.
Together,
our
findings
suggest
adaptations
be
flexibly
underlie
strategies
species.
Peripheral
Drosophila,
organization
Genetic
variation
is
known
to
contribute
the
of
animal
social
behavior,
but
molecular
mechanisms
that
lead
behavioral
differences
are
still
not
fully
understood.
Here,
we
investigate
cellular
evolution
hypothalamic
preoptic
area
(POA),
a
brain
region
plays
critical
role
in
across
two
sister
species
deer
mice
(
Peromyscus
maniculatus
and
P.
polionotus
)
with
divergent
systems.
These
exhibit
large
mating
parental
care
behavior
sex.
Using
single-nucleus
RNA-sequencing,
build
atlas
POA
for
males
females
both
species.
We
identify
four
cell
types
differentially
abundant
species,
which
may
account
based
on
functions
these
types.
Our
data
further
implicate
sex-biased
be
important
sex-specific
behavior.
Finally,
show
remarkable
reduction
gene
expression
,
monogamous
also
exhibits
reduced
sexual
dimorphism
powerful
resource
how
neuronal
traits
evolving
give
rise
innate
Genetic
variation
is
known
to
contribute
the
of
animal
social
behavior,
but
molecular
mechanisms
that
lead
behavioral
differences
are
still
not
fully
understood.
Here,
we
investigate
cellular
evolution
hypothalamic
preoptic
area
(POA),
a
brain
region
plays
critical
role
in
across
two
sister
species
deer
mice
(
Peromyscus
maniculatus
and
P.
polionotus
)
with
divergent
systems.
These
exhibit
large
mating
parental
care
behavior
sex.
Using
single-nucleus
RNA-sequencing,
build
atlas
POA
for
males
females
both
species.
We
identify
four
cell
types
differentially
abundant
species,
which
may
account
based
on
functions
these
types.
Our
data
further
implicate
sex-biased
be
important
sex-specific
behavior.
Finally,
show
remarkable
reduction
gene
expression
,
monogamous
also
exhibits
reduced
sexual
dimorphism
powerful
resource
how
neuronal
traits
evolving
give
rise
innate
Nature Communications,
Год журнала:
2024,
Номер
15(1)
Опубликована: Окт. 28, 2024
Courtship
interactions
are
remarkably
diverse
in
form
and
complexity
among
species.
How
neural
circuits
evolve
to
encode
new
behaviors
that
functionally
integrated
into
these
dynamic
social
is
unknown.
Here
we
report
a
recently
originated
female
sexual
behavior
the
island
endemic
Drosophila
species
D.
santomea,
where
females
signal
receptivity
male
courtship
songs
by
spreading
their
wings,
which
turn
promotes
prolonged
courting
males.
Copulation
success
depends
on
this
correlates
with
males'
ability
adjust
his
singing
such
feedback
loop.
Functional
comparison
of
circuitry
across
suggests
pair
descending
neurons,
integrates
song
stimuli
internal
state
control
conserved
abdominal
behavior,
drives
wing
santomea.
This
co-option
occurred
through
refinement
pre-existing,
plastic
circuit
can
be
optogenetically
activated
an
outgroup
Combined,
our
results
show
ancestral
potential
socially-tuned
key
node
engage
motor
facilitates
expression
appropriate
sensory
motivational
contexts.
More
broadly,
work
provides
insights
evolution
behaviors,
particularly
underlying
mechanisms.
do
behaviors?
wings
response
songs,
evolved
actualization
pre-existing
latent
circuit.
bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 25, 2024
One
avenue
to
better
understand
brain
evolution
is
map
molecular
patterns
of
evolutionary
changes
in
neuronal
cell
types
across
entire
nervous
systems
distantly
related
species.
Generating
whole-animal
single-cell
transcriptomes
three
nematode
species
from
the
bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2024,
Номер
unknown
Опубликована: Авг. 26, 2024
Genetic
variation
is
known
to
contribute
the
of
animal
social
behavior,
but
molecular
mechanisms
that
lead
behavioral
differences
are
still
not
fully
understood.
Here,
we
investigate
cellular
evolution
hypothalamic
medial
preoptic
area
(MPOA),
a
brain
region
plays
critical
role
in
across
two
sister
species
deer
mice
(Peromyscus
maniculatus
and
P.
polionotus)
with
divergent
systems.
These
exhibit
large
mating
parental
care
behavior
sex.
Using
single-nucleus
RNA-sequencing,
build
atlas
MPOA
for
males
females
both
Peromyscus
species.
We
identify
four
cell
types
differentially
abundant
species,
which
may
account
behavior.
Our
data
further
implicate
sex-biased
be
important
sex-specific
Finally,
show
remarkable
reduction
gene
expression
polionotus,
monogamous
also
exhibits
reduced
sexual
dimorphism
powerful
resource
how
neuronal
traits
evolving
give
rise
innate
