Hoisting the white flag of surrender? Color change in agonistic encounters between Achala copper lizard males (Pristidactylus achalensis)
Behavioral Ecology and Sociobiology,
Journal Year:
2023,
Volume and Issue:
77(10)
Published: Oct. 1, 2023
Language: Английский
Comparative thermal ecophysiology in Pristidactylus scapulatus populations from the Puna region of Argentina
Zoology,
Journal Year:
2021,
Volume and Issue:
145, P. 125903 - 125903
Published: Feb. 10, 2021
Language: Английский
Intraspecific variability of bite force in Achala copper lizards in a sexual selection context: who bites harder and when and why?
Biological Journal of the Linnean Society,
Journal Year:
2022,
Volume and Issue:
136(2), P. 282 - 292
Published: April 14, 2022
Abstract
Bite
force
in
lizards
is
involved
key
behaviours
such
as
intrasexual
agonistic
and
intersexual
interactions.
The
relationship
between
morphology
function
dynamic
sexual
pressures
can
affect
bite
performance
differently
sexes,
especially
considering
the
biting
position
temporal
changes
related
to
reproductive
cycle.
Achala
copper
lizard
(Pristidactylus
achalensis)
a
highly
dimorphic
with
short
season.
Both
sexes
present
scars;
however,
scar
varies
implying
different
functions.
We
studied
factors
influencing
sex,
body
size,
head
seasonality.
also
compared
maximum
at
two
positions
(frontal
lateral)
(copulation
fighting),
quantified
incidence
pattern
sexes.
Overall,
males
harder
than
females
lateral
bites
were
frontal
ones.
Although
did
not
vary
seasonally
males,
decreased
after
period.
Harder
may
confer
advantages
mating
competition
size
while
benefit
from
seasonal
enhancement
of
for
mate
rejection
cases
unwanted
copulation.
Language: Английский
Role of coloration in antipredator strategies of Pristidactylus achalensis (Squamata: Leiosauridae) related to sex and stages of predation
Biological Journal of the Linnean Society,
Journal Year:
2021,
Volume and Issue:
133(3), P. 896 - 909
Published: March 30, 2021
Abstract
The
interaction
between
behavioural
and
phenotypic
traits,
such
as
coloration,
plays
a
specific
role
at
different
stages
of
the
predatory
sequence.
Cryptic
coloration
involves
match
to
background
that
reduces
risk
detection,
it
is
usually
optimized
by
immobility
behaviour.
In
lizards,
sexual
dichromatism
within-individual
changes
colour
can
influence
level
their
crypsis
thus
antipredator
behaviour
decision
flee.
Here,
we
examined
variation
in
sexes
Achala
copper
lizard
(Pristidactylus
achalensis).
We
measured
accordance
with
avian
vision.
also
exposed
lizards
raptor
dummy
assess
change
detection
approach
event.
Finally,
tested
escape
natural
habitat.
found
males
were
more
conspicuous
than
females.
Additionally,
individuals
showed
distinct
behaviours
predation
simulation,
but
there
no
differences
sexes.
However,
habitat
initiated
flight
greater
distances
females,
which
might
be
related
coloration.
summary,
this
study
shows
how
affect
during
stage
predation.
Language: Английский
Sperm Parameters in Pristidactylus achalensis (Squamata: Leiosauridae), a Lizard Endemic to the Highest Mountain Areas in Central Argentina
Copeia,
Journal Year:
2020,
Volume and Issue:
108(3)
Published: Sept. 22, 2020
Reproductive
physiology
is
influenced
by
environmental
pressures,
particularly
in
ectothermic
species
living
harsh
climatic
conditions.
Studying
the
period
of
time
which
males
exhibit
semen
availability
and
their
sperm
traits
constitutes
a
powerful
tool
to
evaluate
fertility
potential
because
size
velocity
have
been
proposed
as
determinants
fertilization
success.
Pristidactylus
achalensis
lizard
endemic
highest
mountain
areas
Central
Argentina
shows
pattern
seasonal
activity.
Here,
we
study
when
possess
during
active
season
characterize
spermatozoa
based
on
morphometric
dynamic
among
within
ejaculate.
Males
ejaculates
only
spring
months
season,
suggesting
that
reproductive
activity
restricted
this
time.
Spermatozoa
show
intra-specific
variation
ejaculate,
different
males.
Since
occupies
mountains
categorized
vulnerable,
basic
information
about
reproduction
could
be
useful
for
population
conservation
strategies.
Language: Английский
Relationships among Behavior, Chromatism, and Morphology in Male Aggressive Encounters in Tropidurus spinulosus
Ichthyology & Herpetology,
Journal Year:
2022,
Volume and Issue:
110(2)
Published: May 31, 2022
Male–male
aggressive
encounters
in
lizards
may
involve
physical
confrontation
or
the
use
of
multiple
cues
to
signal
fighting
ability.
Behavioral,
chromatic,
and
morphological
traits
be
associated
reinforce
gradual
messages
escalate
deescalate
interactions
during
encounters.
Our
first
aim
was
provide
a
detailed
ethogram
male–male
social
lizard
Tropidurus
spinulosus.
Then,
we
aimed
elucidate
association
among
behaviors
chromatic
characters.
results
showed
several
behavioral
displays
organized
sequential
phases,
with
two
being
characteristic
this
species;
furthermore,
increasingly
threatening
repeated
times
before
reaching
aggression.
Males
that
dominated
usually
had
more
extended
color
bands
most
visible
body
parts,
lower
condition,
preferentially
performed
pushup
early
bout,
whereas
males
were
ultimately
chased
high
band
extension
chest
testicular
volume
lateral
compression
head-swipe
escalating
readily
aggression
by
biting
opponent.
In
conclusion,
employed
different
their
characters,
highlighting
existence
signaling
strategies
individuals.
Language: Английский
First description of courtship and copulation in Pristidactylus casuhatiensis (Squamata, Leiosauridae)
Revista chilena de historia natural,
Journal Year:
2023,
Volume and Issue:
96(1)
Published: Aug. 12, 2023
Abstract
Background
Reproductive
behaviour
under
natural
conditions
is
hard
to
record,
especially
in
rare
and
cryptic
species,
such
as
the
Casuhatien
anole
(
Pristidactylus
casuhatiensis
).
This
medium
size
lizard
endemic
Sierras
Australes
Bonaerenses,
a
rocky
outcrop
Southern
Pampas
of
Argentina.
Methods
During
spring
summer
from
2018
2022,
we
surveyed
five
hills
at
above
600
m
altitude,
where
specimens
were
known
occur.
Every
time
detected
courtship
or
copulation
event,
took
photographs
for
their
individual
identification,
recorded
body
temperature
participating
individuals
well
air
temperature,
wind
speed
relative
humidity.
We
duration
minutes
each
phase
event
(immobilization,
juxtaposition
cloacae
followed
by
copulation,
finally,
restraint
separation)
described
main
habitat
features
site
it
happened.
Results
12
reproductive
events;
all
them
occurred
October
November,
on
Funke,
Puntudo
Tres
Picos
hills,
mostly
between
1300
1700
h.
The
mean
was
6
min
(95%
CI
=
±
1.4,
n
10),
4.3
1.8,
10)
3.8
3.42,
respectively.
Conclusion
activity
concentrated
spring,
particularly
early
afternoon,
following
patterns
other
species
lizards.
these
events,
greatest
exposure
could
make
more
vulnerable.
This,
together
with
related
revealed
this
paper
may
contribute
planning
conservation
actions.
Language: Английский