Variation in parrot jaw musculature
The Anatomical Record,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 7, 2025
Abstract
Psittaciformes,
the
order
encompassing
parrots
and
their
relatives,
are
highly
diverse
generally
known
for
having
a
strong
beaks
used
multiple
behaviors.
The
muscles
related
to
masticatory
apparatus
should
reflect
this
functional
complexity;
however,
few
studies
have
described
cranial
myology
across
order.
Through
original
dissections,
we
describe
compare
musculoskeleton
of
27
species—the
most
taxonomically
sample
psittaciformes
date.
As
in
previous
studies,
found
osteological
differences
configuration
suborbital
arch,
zygomatic
process,
temporal
fossa,
while
relatively
similar
order,
there
notable
exceptions
morphology
m.
pseudomasseter
,
adductor
mandibulae
externus
pars
rostralis
venter
portion
pterygoideus
ventralis
lateralis
.
Our
findings
reinforce
amazing
anatomical
diversity
within
group—data
that
can
be
incorporated
into
future
biomechanics
diversification
Further
analysis
focus
on
(a)
filling
more
remarkable
number
species
especially
uncommon
functionally
interesting
taxa
unavailable
present
study,
(b)
examining
dietary
specialization
understand
whether
adaptive
signals
encoded
anatomy,
(c)
advancing
with
other
techniques
such
as
DiceCT
visualize
relationship
these
3D
space
able
evaluate
specimens
non‐destructively,
priority
hard‐to‐dissect
(e.g.,
small)
rare)
collections
wish
fully
preserve.
Язык: Английский
Estimated and in vivo measurements of bite force demonstrate exceptionally large bite forces in parrots (Psittaciformes)
Journal of Anatomy,
Год журнала:
2024,
Номер
unknown
Опубликована: Сен. 24, 2024
Abstract
Jaw
morphology
and
function
determine
the
range
of
dietary
items
that
an
organism
can
consume.
Bite
force
is
a
exerted
by
jaw
musculature
applied
via
skeleton.
has
been
studied
in
wide
taxa
using
various
methods,
including
direct
measurement,
or
calculation
from
skulls
musculature.
Data
for
parrots
(Psittaciformes),
considered
to
have
strong
bites,
are
rare.
This
study
calculated
bite
parrot
species
differing
sizes
novel
method
relied
on
forces
area
muscles
measured
situ
their
masses.
The
values
were
also
recorded
vivo
transducers,
allowing
validation
dissection‐based
models.
analysis
investigated
allometric
relationships
between
measures
body
size
force.
Additionally,
examined
whether
measure
muscle
scar
could
be
useful
proxy
estimate
parrots.
was
positively
relative
skull
mass,
with
macaws
having
strongest
date
bird.
Calculated
not
statistically
different
values.
Muscle
scars
adductor
attachment
mandible
used
accurately
predict
These
results
implications
how
process
hard
food
estimated
other
morphological
characteristics
Язык: Английский
The role of many-to-one mapping of vertebral form to function in Psittaciform tripedal locomotion
bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2024,
Номер
unknown
Опубликована: Март 3, 2024
Abstract
Parrots
highlight
the
functional
diversity
of
avian
neck
by
contributing
to
a
range
behaviors,
including
arboreal
locomotion.
The
parrot
is
used
alongside
beak
and
hindlimb
allow
them
successfully
navigate
habitats
via
tripedal
Whether
specific
morphological
characteristics
enable
this
behavior
are
currently
unknown.
By
combining
geometric
morphometrics
with
phylogenetic
comparative
methods
we
investigate
factors
correlate
shape
variation
in
cervical
vertebrae
parrots.
We
find
that
phylogeny,
allometry,
integration,
diet
locomotion
all
have
significant
influence
on
morphology
psittaciform
vertebrae.
However,
weak,
high
degree
morphospace
overlap
existing
between
dietary
use
groups.
Additionally,
no
evidence
convergence
due
incidence
or
specialization.
thus
conclude
changes
neuromuscular
control
neck,
not
adaptations,
primarily
responsible
for
argue
many-to-one
mapping
form
function
allows
parrots
similar
morphologies
participate
may
be
common
feature
amongst
birds.
Язык: Английский