Male social niche conformance? Effects of manipulated opportunity for extra-pair mating on behavior and hormones of male zebra finches
Hormones and Behavior,
Год журнала:
2022,
Номер
146, С. 105243 - 105243
Опубликована: Авг. 20, 2022
Success
in
sperm
competition
is
an
important
determinant
of
male
fitness
mating
systems
with
female
multiple
mating.
Thus,
risk
represents
a
key
dimension
the
social
environment
to
which
individual
males
are
expected
adaptively
adjust
their
reproductive
phenotype.
Such
adaptive
phenotypic
adjustment
we
here
refer
as
niche
conformance.
In
this
pre-registered
study,
investigated
how
zebra
finches,
Taeniopygia
guttata,
behavior
risk.
We
experimentally
manipulated
opportunity
for
extra-pair
create
two
levels
risk:
1)
Single-pair,
no
risk;
2)
Double-pair,
compared
courtship,
mate
guarding,
copulation
rates,
and
aggression
between
treatment
groups.
To
identify
hormonal
correlates
behavioral
adjustment,
measured
plasma
testosterone
corticosterone
before
after
started.
Contrary
our
predictions,
from
Double-pair
group
decreased
courtship
rates
those
Single-pair
group,
responded
less
aggressively
towards
intruders
than
males.
Testosterone
over
breeding
cycle,
but
had
effect
on
either
or
levels.
Our
results
indicate
that
finches
do
not
intensify
competitive
behaviors,
upregulate
hormones
when
another
pair
present.
Although
found
evidence
predicted
responses
risk,
show
plastically
environment.
Язык: Английский
Wasted efforts impair random search efficiency and reduce choosiness in mate-pairing termites
bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2024,
Номер
unknown
Опубликована: Фев. 6, 2024
Abstract
Random
search
theories
predict
that
animals
employ
movement
patterns
optimize
encounter
rates
with
target
resources.
However,
are
not
always
able
to
achieve
the
best
strategy.
Energy
depletion,
for
example,
limits
searchers’
activities,
forcing
them
adjust
their
behaviors
before
and
after
encounters.
Here,
we
quantified
cost
of
mate
in
a
termite,
Reticulitermes
speratus
,
revealed
searching
reduces
selectivity
mating
partners.
After
dispersal
flight,
termites
partner
limited
reserved
energy.
We
found
activity
diffusiveness
progressively
declined
over
extended
search.
Our
data-based
simulations
qualitatively
confirmed
reduced
decreased
efficiency.
Also,
prolonged
periods
colony
foundation
success
number
offspring.
Thus,
imposes
doubled
costs
on
termites.
Finally,
an
partners,
where
males
immediately
paired
any
encountering
females.
dramatically
changed
behavior
depending
physiological
conditions.
finding
highlights
accounting
internal
states
is
essential
fill
gap
between
random
empirical
behavioral
observations.
Язык: Английский
Foreign–local microdialect discrimination in a songbird, the black redstart
Animal Behaviour,
Год журнала:
2024,
Номер
210, С. 113 - 125
Опубликована: Фев. 21, 2024
Язык: Английский
Wasted efforts impair random search efficiency and reduce choosiness in mate-pairing termites
The American Naturalist,
Год журнала:
2024,
Номер
204(6), С. 589 - 599
Опубликована: Авг. 26, 2024
AbstractRandom
search
theories
predict
that
animals
employ
movement
patterns
optimize
encounter
rates
with
target
resources.
However,
are
not
always
able
to
achieve
the
best
strategy.
Energy
depletion,
for
example,
limits
searchers'
activities,
forcing
them
adjust
their
behaviors
before
and
after
encounters.
Here,
we
investigate
cost
of
mate
in
a
termite,
Язык: Английский
Bite force, body size, and octopamine mediate mating interactions in the house cricket (Acheta domesticus)
Journal of Evolutionary Biology,
Год журнала:
2023,
Номер
36(10), С. 1494 - 1502
Опубликована: Сен. 22, 2023
Mating
interactions
are
rife
with
conflict
because
the
evolutionary
interests
of
males
and
females
seldom
coincide.
Intersexual
affects
sexual
selection,
yet
proximate
factors
underlying
male
coercive
ability
female
resistance
poorly
understood.
Male
combat
outcomes
often
influenced
by
bite
force,
superior
biters
being
more
likely
to
achieve
victory
over
poorer
in
a
range
species,
including
crickets.
If
good
performers
also
mating
success
through
coercion,
then
force
might
play
role
intersexual
as
well.
We
tested
capacity
influence
house
crickets
both
directly
measuring
forces
altering
neuropharmacological
manipulation.
In
addition,
invertebrate
neurotransmitter
octopamine
mediates
aggression
underlies
motivation
By
blocking
receptors
application
an
antagonist,
epinastine,
we
effects
reduced
on
success.
Our
results
show
that
capacity,
combination
body
size,
influences
likelihood
interactions,
whereas
treatment
epinastine
eliminates
mate.
suggest
functional
for
affecting
selection
expand
our
knowledge
biogenic
amines
reproductive
behaviour.
Язык: Английский