Evil and allies: Opportunistic gulls as both spreaders and sentinels of antibiotic‐resistant bacteria in human‐transformed landscapes
Journal of Applied Ecology,
Journal Year:
2024,
Volume and Issue:
61(11), P. 2809 - 2821
Published: Oct. 1, 2024
Abstract
Human‐transformed
residuals,
especially
those
derived
from
human
waste
(dumps),
farmland,
and
livestock
are
involved
in
the
emergence
of
antibiotic‐resistant
bacteria
(ARB)
environment.
Wildlife
can
act
as
vectors
ARB
dispersal
through
different
environments,
but
also
sentinels
to
detect
early
spread
determine
sources.
The
development
integrated
monitoring
programmes
focused
on
wildlife
would
help
anticipate
risks
humans
livestock.
We
used
yellow‐legged
gull
(
Larus
michahellis
)
a
model
species
investigate
monitor
spatial
patterns
across
an
extensive
farmland
region
located
northeastern
Spain
(Lleida).
By
integrating
GPS
tracking
data
clinical
testing
for
26
individuals
within
network
analysis
framework,
we
modelled
risk
pathogen
faeces
during
bacteria‐transmission
latency
period
(16
days
after
sample
collection).
Additionally,
created
connectivity
main
sources
area,
focusing
three
habitats
special
infection:
dumps,
facilities,
irrigation
ponds.
Seven
were
infected
by
Escherichia
coli
,
with
one
co‐infected
Listeria
monocytogenes
Salmonella
spp.
Potential
distances
ranged
1.13
km
23.13
breeding
colony.
Our
analyses
revealed
54
nodes
(i.e.
high‐risk
recurrently
visited
tracked
gulls)
1182
links
among
them.
findings
high
degree
between
shallow
lake,
nearby
highlighting
them
significant
contributors
dispersal.
Synthesis
applications
:
integration
data,
shed
further
light
dynamics
creating
maps
identifying
In
combination
complementary
molecular
epidemiology
techniques
One
Health
our
approach
emerge
important
tool
highly
human‐transformed
ecosystems.
This
may
empower
managers
targeted
effective
mitigation
strategies,
ultimately
improving
both
animal
public
health.
Language: Английский
Opportunistic Gulls Infected by Antibiotic‐Resistant Bacteria Show Contrasting Movement Behaviour
Ecology and Evolution,
Journal Year:
2025,
Volume and Issue:
15(4)
Published: April 1, 2025
ABSTRACT
The
emergence,
spread
and
potential
zoonotic
importance
of
pathogenic‐resistant
bacteria
(e.g.,
Escherichia
coli
)
has
fuelled
the
research
on
epidemiology
vector
movement
dynamics.
However,
little
is
known
about
effects
that
apparently
asymptomatic
carriage
may
have
host
behaviour.
Here,
we
analysed
compared
patterns
habitat
use
(focused
different
risk
exposure
to
Antibiotic
Resistance)
yellow‐legged
gulls
(
Larus
michahellis
carrying
n
=
10)
not
29)
Antibiotic‐resistant
.
Using
data
from
GPS
devices
coupled
with
accelerometers,
found
evidence
individuals
resistant
E.
,
although
previously
considered
asymptomatic,
had
lower
accumulated
travelled
distances
moved
over
smaller
areas.
resistance
affect
some
extent,
as
in
this
case,
potentially
reducing
pathogen
dispersal
large
Language: Английский
Dirty habits: potential for spread of antibiotic-resistance by black-headed gulls from waste-water treatment plants
Environmental Science and Pollution Research,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 30, 2024
Abstract
Anthropogenic
environments
such
as
wastewater
treatment
plants
(WWTPs)
and
landfills
are
sources
of
antimicrobial
resistance
(AMR).
Black-headed
gulls
(
Chroicocephalus
ridibundus)
frequently
use
WWTPs
may
be
vectors
for
AMR.
We
used
GPS
tracking
data
39
up
to
8
months,
combined
with
a
shedding
curve,
study
dispersal
distances
AMR
in
Iberia.
The
21
different
(684
visits)
three
(21
visits).
Areas
high
risk
dissemination
were
an
average
25
km
from
the
infection
source,
maximum
500
km.
Solar
saltworks
natural
waterbodies
particularly
exposed
dissemination,
followed
by
agriculture,
sports
facilities,
tourist
beaches.
There
was
important
variability
between
individual
their
habitat
specialization,
which
they
visited.
Studying
spatial
movements
after
visiting
helps
pinpoint
sensitive
locations
where
pathogen
transmission
is
most
likely.
Language: Английский