Chemical signal diversity in male sand lizards (Lacerta agilis) along an urbanization gradient
Scientific Reports,
Год журнала:
2025,
Номер
15(1)
Опубликована: Фев. 26, 2025
Abstract
Urban
areas
have
globally
expanded
recently
and
will
likely
continue
to
do
so
in
the
near
future.
Although
impact
of
urbanization
on
acoustic
visual
sexual
signals
has
received
considerable
attention,
other
aspects,
such
as
its
influence
chemical
signaling,
remain
poorly
studied.
Many
lizard
species
possess
femoral
glands,
i.e.
prominent
epidermal
glands
underside
thighs
producing
a
wide
variety
compounds
used
signaling.
Here
we
assessed
effect
urban,
suburban
rural
habitats
individual
body
condition
variation
signal
composition
sand
(
Lacerta
agilis
).
By
using
gas
chromatography
coupled
with
mass
spectrometry,
characterized
present
secretions
glands.
We
found
that
lizards
from
urban
had
highest
diversity
chemicals,
while
showed
significantly
lower
compound
diversity.
Lizards
high
amounts
several
compounds,
including
α-tocopherol,
an
antioxidant
molecule
may
counterbalance
damaging
effects
irradiation
pheromones.
Chemical
not
only
depend
habitat
characteristics
but
traits,
condition,
also
affect
Body
did
differ
across
habitats,
find
association
between
gland
secretions.
argue
environmental
differences
(more
extreme
cities)
well
factors
increased
stress
shape
semiochemicals
lizards.
Our
study
provides
insight
how
conditions
imposed
by
urban–rural
gradients
modulate
communication
vertebrates.
Язык: Английский
Effect of MHC and inbreeding on disassortative reproduction: A data revisit, extension and inclusion of fertilization in sand lizards
Ecology and Evolution,
Год журнала:
2023,
Номер
13(3)
Опубликована: Март 1, 2023
Abstract
The
harmful
effects
of
close
inbreeding
have
been
recognized
for
centuries
and,
with
the
rise
Mendelian
genetics,
was
realized
to
be
an
effect
homozygosis.
This
historical
background
led
great
interest
in
ways
quantify
inbreeding,
its
depression
on
phenotype
and
flow‐on
mate
choice
other
aspects
behavioral
ecology.
mechanisms
cues
used
avoid
are
varied
include
major
histocompatibility
complex
(MHC)
molecules
peptides
they
transport
as
predictors
degree
genetic
relatedness.
Here,
we
revisit
complement
data
from
a
Swedish
population
sand
lizards
(
Lacerta
agilis
)
showing
signs
assess
relatedness
pair
formation
wild.
Parental
pairs
were
less
similar
at
MHC
than
expected
under
random
mating
but
mated
respect
microsatellite
clustered
groups
RFLP
bands
no
partner
preference
observed
cluster
genotype.
Male
band
patterns
unrelated
their
fertilization
success
clutches
selected
analysis
basis
mixed
paternity.
Thus,
our
suggest
that
plays
role
pre‐copulatory,
not
post‐copulatory
association,
suggesting
is
driver
bias
gamete
recognition
lizards.
Язык: Английский
Female reed warblers in social pairs with low MHC dissimilarity achieve higher MHC compatibility through random extra-pair matings
bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2023,
Номер
unknown
Опубликована: Апрель 18, 2023
Abstract
Major
Histocompatibility
Complex
(MHC)
polymorphism
is
maintained
by
balancing
selection
through
host-pathogen
interactions
and
mate
choice.
MHC-based
choice
has
been
proposed
across
a
wide
range
of
vertebrates.
However,
the
likelihood
its
existence
in
songbirds
questioned
because
their
poorly
developed
olfactory
sense,
which
trait
considered
crucial
pre-copulatory
to
determine
both
own
MHC
putative
partners.
In
this
study,
we
show
that
female
reed
warblers,
Acrocephalus
scirpaceus
,
with
extra-pair
young
nests
have
lower
class
I
(MHC-I)
dissimilarity
social
than
females
without
nests.
We
also
MHC-I
successfully
siring
males
not
different
from
either
other
territories
surrounding
nest
(
i.e.
males)
or
pairs
Taken
together
observation
mating
warblers
common,
argue
these
results
support
scenario
where
more
likely
lead
successful
fertilisation
when
there
high
similarity
between
her
male.
Furthermore,
as
our
data
suggest
at
random
can
result
higher
does
require
any
active
for
dissimilar
drive
pattern.
Язык: Английский
Mate choice and the major histocompatibility complex: a review
Biological Journal of the Linnean Society,
Год журнала:
2024,
Номер
143(3)
Опубликована: Окт. 23, 2024
Abstract
In
many
vertebrates,
individuals
choose
mates
due
to
benefits
accrued
via
the
production
of
offspring
high
genetic
quality.
Genes
major
histocompatibility
complex
(MHC),
which
are
associated
with
individual
immunocompetence,
provide
potential
choosers
who
mate
that
possess
specific
MHC
alleles,
have
genotypes
dissimilar
their
own,
heterozygous
for
loci,
and/or
highly
MHC-divergent.
We
review
evidence
these
different
modes
choice,
and
signals
by
status
is
assessed.
genes
may
directly
or
indirectly
regulate
odours,
thus
enable
assessment
choice
olfaction.
For
both
visual
auditory
signals,
however,
an
association
relatively
weak.
Importantly,
be
cotransmitted
through
multiple
phenotypes,
species
focus
on
phenotypic
differences
in
sensory
sensitivity.
Future
research
should
detecting
cues
(including
olfactory,
visual,
auditory)
can
signal
genotypes,
as
well
investigating
underlying
mechanisms
how
signals.
Язык: Английский