Table for two: diet composition differences of allopatric and sympatric populations of island geckos
Global Ecology and Conservation,
Год журнала:
2025,
Номер
unknown, С. e03412 - e03412
Опубликована: Янв. 1, 2025
Язык: Английский
Metabarcoding clarifies the diet of the elusive and vulnerable Australian tjakura (Great Desert Skink, Liopholis kintorei)
Frontiers in Ecology and Evolution,
Год журнала:
2024,
Номер
12
Опубликована: Март 26, 2024
Introduction
Accurately
quantifying
the
diet
of
species
has
implications
for
our
understanding
their
ecology
and
conservation.
Yet,
determining
dietary
composition
threatened
elusive
in
wild
is
often
difficult.
Methods
This
study
presents
first
assessment
tjakura
(
Liopholis
kintorei
)
using
non-invasive
sampling
scats
high-throughput
sequencing
techniques.
Results
The
Uluru
consumed
48
invertebrates,
27
plants,
two
vertebrate
taxa.
Fruit
flies
Leucophenga
spp.),
beetles
Harpalus
spp.
Omorgus
mosquitos
Culicidae
termites
Termitidae
spiked
mallow
Malvastrum
americanum
),
bush
tomatoes
Solanum
centrale
turnip
Brassica
tournefortii
comprised
majority
diet.
Analysis
similarity
revealed
that
food
items
did
not
differ
significantly
between
age
groups,
seasons,
or
time
since
last
fire,
however,
adults,
hot
season,
fire
scar
2018
showed
a
relatively
higher
prey
diversity.
Discussion
These
high
similarities
classes
scars
indicate
potential
intraspecific
competition
when
resources
are
scarce.
diversity
plasticity
observed
this
reflect
influenced
by
availability
rather
than
preference.
Our
demonstrates
scat
DNA
metabarcoding
an
important
complementary
tool
to
conventional
analysis
indigenous
knowledge
as
most
we
identified
were
previously
recorded
through
those
methods.
Язык: Английский
Dietary niche partitioning of three Sky Island Sceloporus lizards as revealed through DNA metabarcoding
Ecology and Evolution,
Год журнала:
2023,
Номер
13(9)
Опубликована: Сен. 1, 2023
Lizard
diets
are
highly
diverse
and
have
contributed
to
the
diversification,
biogeographical
distributions,
evolution
of
novel
traits
across
this
global
radiation.
Many
parts
a
lizard's
ecology-including
habitat
preferences,
foraging
modes,
predation
risks,
interspecific
competition,
thermal
constraints,
among
others-interact
shape
diets,
dietary
niche
partitioning
simultaneously
contributes
co-occurrence
within
communities.
We
used
DNA
metabarcoding
fecal
samples
identify
prey
items
in
three
sympatric
Язык: Английский
Smaller islands, bigger appetites: evolutionary strategies of insular endemic skinks
Royal Society Open Science,
Год журнала:
2024,
Номер
11(10)
Опубликована: Окт. 1, 2024
Competitive
dietary
and
morphological
divergence
among
co-occurring
species
are
fundamental
aspects
of
ecological
communities,
particularly
on
islands.
Cabo
Verde
(~570
km
west
continental
Africa)
hosts
several
endemic
reptiles
descended
from
common
ancestors,
with
sympatric
exhibiting
wide
variation
competing
for
limited
resources.
To
explore
the
mechanisms
resource
partitioning
between
coexisting
species,
DNA
metabarcoding
was
used
to
compare
diets
large
small
skinks,
Chioninia
vaillantii
delalandii
,
in
allopatric
contexts
Fogo
Island
a
more
competitive
context
resource-poor
Cima
Islet.
The
all
populations
also
examined
test
character
displacement
hypothesis
effect
different
scenarios.
Results
showed
significant
differences
diet
linear
measurements
populations.
two
C.
similar
changes
head
morphology
compared
population,
supporting
displacement.
higher
pressure
evidenced
by
increased
observed.
This
study
demonstrates
how
sister
develop
adaptations/morphologies
maintain
stable
coexistence,
especially
highly
scenarios,
providing
useful
insights
effective
conservation
strategies.
Язык: Английский