Hormones and Behavior,
Journal Year:
2023,
Volume and Issue:
156, P. 105443 - 105443
Published: Oct. 21, 2023
Social
information
gathering
is
a
complex
process
influenced
by
neuroendocrine-modulated
neural
plasticity.
Oxytocin
(OXT)
key
regulator
of
social
decision-making
processes
such
as
gathering,
it
contextually
modulates
salience
and
can
induce
long-term
structural
plasticity,
including
neurogenesis.
Understanding
the
link
between
OXT-induced
plasticity
communicative
awareness
crucial,
particularly
because
OXT
being
considered
for
treatment
pathologies.
We
investigated
role
chronic
OXT-dependent
in
attention
to
novel
manipulating
duration
time
following
cessation
intranasal
allow
functional
integration
adult-born
neurons
resulting
from
treatment.
Following
3-week
delay,
(IN-OXT)
increased
approach
behavior
both
female
male
mice
towards
aggressive
vocal
playbacks
two
unseen
conspecifics,
while
no
effect
was
observed
after
3-day
delay.
Immature
ventral
hippocampus
females
males
treated
with
IN-OXT
indicating
potential
association
hippocampal
neurogenesis
approach/acoustic
eavesdropping.
The
less
mouse
approached,
higher
level
Contrary
expectations,
correlation
not
affected
IN-OXT,
suggesting
that
other
mechanisms
underlie
effects
on
approach.
Furthermore,
we
found
negative
freezing
behavior.
Overall,
our
results
demonstrate
IN-OXT-induced
influence
further
reinforced
anxiety.
Behavioral Ecology,
Journal Year:
2024,
Volume and Issue:
36(1)
Published: Dec. 4, 2024
Abstract
Wild
animals
typically
organize
activity
around
a
24-h
day
and
daily
timing
across
the
year
is
optimized
for
both
survival
reproductive
success.
Among-individual
variation
in
chronotype,
where
individuals
differ
when
they
begin
or
end
their
active
relative
to
cue
such
as
photoperiod,
often
exists
within
population.
Both
intrinsic
extrinsic
factors
contribute
this
patterns
may
change
different
life-history
stages
energetic
investment
changes.
Here
we
describe
population
level
changes
free-living
female
great
tit
(Parus
major)
of
onset
offset
well
assess
repeatability
within-
across-breeding
stages.
We
fitted
individual
females
with
accelerometers
track
prior
nest
building
through
chick
rearing.
Prior
clutch
initiation
began
before
sunrise,
however,
days
laying
first
egg,
was
delayed
until
after
sunrise.
Females
ended
sunset
monitoring
period
earliest
during
egg
incubation.
In
addition,
exhibited
greater
among-
within-individual
variance
parental
care.
Female
moderately
repeatable
breeding
strongly
covaried
several
These
findings
expand
our
understanding
reproduction
potential
fitness
implications
chronotype
wild
animals.
Biology of Sex Differences,
Journal Year:
2023,
Volume and Issue:
14(1)
Published: Nov. 10, 2023
Abstract
Background
Sex
differences
have
been
observed
in
several
brain
regions
for
the
molecular
mechanisms
involved
baseline
(resting)
and
memory-related
processes.
The
ubiquitin
proteasome
system
(UPS)
is
a
major
protein
degradation
pathway
cells.
lysine-48
(K48)-polyubiquitination,
canonical
mark
of
UPS,
both
at
during
fear
memory
formation
within
amygdala.
Here,
we
investigated
when,
how,
why
these
sex
arise
whether
sexes
require
K48-polyubiquitin
Methods
We
used
combination
molecular,
biochemical
proteomic
approaches
to
examine
global
protein-specific
K48-polyubiquitination
DNA
methylation
levels
coding
gene
(
Uba52
)
amygdala
male
female
rats
before
after
puberty
determine
if
were
developmentally
regulated.
then
behavioral
genetic
test
necessity
formation.
Results
regulated
total
K48-polyubiquitination,
with
sexual
maturity
altering
specifically
rats.
specific
proteins
changed
across
development
rats,
but
present
regardless
age.
Lastly,
found
that
inhibition
female,
not
male,
impaired
Conclusions
These
results
suggest
differentially
targets
sex-specific
manner
However,
important
developmental
regulation
Consistent
data,
signaling
selectively
required
form
memories
Together,
data
indicate
sex-differences
are
regulated,
which
could
implications
better
understanding
processes
relevant
anxiety-related
disorders
such
as
post-traumatic
stress
disorder
(PTSD).
Poultry Science,
Journal Year:
2022,
Volume and Issue:
101(12), P. 102227 - 102227
Published: Oct. 4, 2022
Photoperiod
is
an
important
environmental
factor
that
influence
seasonal
reproduction
behavior
in
bird
and
GnIH
can
play
a
function
this
process
through
the
reproductive
axis,
some
studies
suggest
may
have
direct
role
at
gonadal
level.
To
investigate
expression
of
its
effects
on
follicle
development
steroidogenesis
quail
ovaries
under
different
photoperiods,
72
healthy
laying
quails
8-wk-old
were
randomly
divided
into
long
day
(LD)
group
[16
light
(L):
8
dark
(D)]
(n
=
36)
short
(SD)
(8L:16D)
36).
Samples
collected
from
each
d1,
d11,
d22,
d36
experiment.
The
result
showed
treatment
upregulated
level
gonads
(P
<
0.05),
decreased
CYP19A1,3β-HSD,
StAR,
LHR,
FSHR
increased
AMH,
AMHR2,
GDF9,
BMP15
to
inhibit
ovulation,
thus
affecting
egg
production
performance
quails.
In
vitro
culture
granulosa
cells
with
concentrations
(0,
1,
10,
100
ng/mL)
for
24
h.
Result
inhibited
levels
FSHR,
steroid
synthesis
pathways
cells,
BMP15.
results
inhibition
reduced
by
due
acting
level,
affected
inhibiting
gonadotropin
receptors.
Current Opinion in Neurobiology,
Journal Year:
2024,
Volume and Issue:
86, P. 102867 - 102867
Published: March 23, 2024
Learning
and
execution
of
complex
motor
skills
are
often
modulated
by
sensory
feedback
contextual
cues
arriving
across
multiple
modalities.
Vocal
behaviors,
in
particular,
primarily
influenced
auditory
inputs,
both
during
learning
mature
vocal
production.
The
importance
input
shaping
output
has
been
investigated
several
songbird
species
that
acquire
their
adult
song
based
on
exposure
to
a
tutor
development.
Recent
studies
have
highlighted
the
influences
stimuli
through
other
channels
juvenile
Here,
we
review
changes
induced
diverse
process
production
song,
considering
neuroethological
significance
different
songbirds.
Additionally,
highlight
advances,
open
questions,
possible
future
approaches
for
understanding
neural
circuits
enable
multimodal
singing
behavior.
The Journal of the Acoustical Society of America,
Journal Year:
2024,
Volume and Issue:
155(4), P. 2724 - 2727
Published: April 1, 2024
The
auditory
sensitivity
of
a
small
songbird,
the
red-cheeked
cordon
bleu,
was
measured
using
standard
methods
animal
psychophysics.
Hearing
in
bleus
is
similar
to
other
passerines
with
best
hearing
frequency
region
from
2
4
kHz
and
declining
at
rate
about
10
dB/octave
below
35
as
increases
9
kHz.
While
critical
ratios
are
songbirds,
long-term
average
power
spectrum
bleu
song
falls
above
this
species.