Ticks and Tick-borne Diseases,
Journal Year:
2023,
Volume and Issue:
14(5), P. 102201 - 102201
Published: May 26, 2023
Sika
deer
(Cervus
nippon)
are
important
hosts
for
all
life
stages
of
Haemaphysalis
megaspinosa,
a
suspected
Rickettsia
vector.
Because
some
unlikely
to
be
amplified
by
in
Japan,
the
presence
may
decrease
prevalence
infection
questing
H.
megaspinosa.
As
sika
vegetation
cover
and
height
thereby
indirectly
cause
changes
abundance
other
hosts,
including
reservoirs
Rickettsia,
ticks
can
also
change.
We
investigated
these
possible
effects
on
with
field
experiment
which
density
was
manipulated
at
three
fenced
sites:
enclosure
(Deer-enclosed
site);
where
had
been
present
until
2015
only
indirect
remained
(Indirect
effect
exclosure
place
since
2004
(Deer-exclosed
site).
Density
nymphs
sp.
1
each
site
were
compared
from
2018
2020.
The
nymph
Deer-exclosed
did
not
significantly
differ
that
Indirect
site,
suggesting
herbivory
affect
reducing
increasing
host
mammals.
However,
higher
than
Deer-enclosed
possibly
because
utilized
alternative
when
absent.
difference
between
sites
comparable
sites,
indicating
as
strong
direct
effects.
Examining
ecosystem
engineers
study
tick-borne
diseases
more
previously
recognized.
bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2024,
Volume and Issue:
unknown
Published: Jan. 25, 2024
The
aims
of
this
study
were
to
elucidate
factors
contributing
the
expansion
distributions
sika
deer
and
wild
boar
in
Japan
predict
their
by
2025,
2050,
2100.
A
site
occupancy
model
was
constructed
using
information
on
species
distribution
collected
Ministry
Environment
1978,
2003,
2014,
2018,
days
snow
cover,
forested
road
areas,
elevation,
human
population,
distance
from
occupied
grid
cells
as
covariates
calculate
probability
change.
Factors
elucidated
predicted.
Distance
had
strongest
influence
expansion,
followed
inherent
ability
each
expand
its
distribution.
For
deer,
population
a
strong
negative
effect
elevation
number
cover
important.
boar,
forest
area
high
importance.
Predictions
future
showed
that
both
will
be
distributed
over
90%
2050
100%
Research Square (Research Square),
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 24, 2024
Abstract
Large
terrestrial
mammals
have
generally
declined
due
to
human
activity,
but
the
recovery
of
some
populations
poses
new
issues
for
coexistence.
Few
studies
date
investigated
drivers
this
and
its
impacts
on
societies
at
national
scale.
We
assessed
process
range
expansion
six
species
large
over
approximately
40
years
society
in
Japan,
one
most
rapidly
depopulating
countries.
found
evidence
that
increased
agricultural
abandonment
decreased
snowfall
drove
mammals.
The
all
expanded
from
mountainous
landscapes
those
closer
settlements,
leading
an
increase
conflicts
threaten
people’s
property
safety.
predict
accelerating
depopulation
climate
warming
could
lead
further
these
species,
call
measures
mitigate
achieve
coexistence
with
them.
Japanese Journal of Infectious Diseases,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 26, 2024
Ticks
are
vectors
of
tick-borne
diseases
(TBDs)
between
humans
and
wild
vertebrates.
The
relationship
ticks,
host
vertebrates,
their
pathogens
should
be
investigated
for
the
effective
control
TBDs.
Hence,
this
study
aimed
to
detect
vertebrate
DNA
in
ticks
by
using
molecular
methods
identify
species
such
collected
Fukuoka
Prefecture,
which
is
located
northern
Kyushu
area
Japan.
from
vegetation
were
flagging
2017
2023.
Out
152
flagging,
65
(42.8%)
found
have
DNA.
By
stage,
DNAs
detected
26
83
nymphs
(31.3%)
39
69
adults
(56.5%).
Among
Sika
deer
was
main
blood-feeding
source
Prefecture.
Owing
widespread
across
prefecture,
its
population
other
wildlife
populations
could
a
countermeasure
reducing
TBD
risk.
Medical Entomology and Zoology,
Journal Year:
2023,
Volume and Issue:
74(2), P. 53 - 56
Published: June 25, 2023
During
the
3-year
period
(2020–2022),
49
cases
of
tick
bites
were
presented
to
Japanese
Red
Cross
Ashikaga
Hospital
in
Tochigi
Prefecture,
Japan.
More
than
60%
all
between
March
and
September
occurred
within
two
months
(May
June).
Amblyomma
testudinarium
was
responsible
for
40
among
bite
cases.
Specifically,
41
individuals
this
species
(39
nymphs/2
adult
females)
linked
(The
point
estimate
0.79
with
a
95%
confidence
interval
0.67–1.00).
There
38
City,
23
which
vicinity
patients'
houses
(gardens
fields).
Suspected
Tick-associated
rash
illness
(TARI)
first
recorded
May
2020,
total
five
(
i.e.,
patients
aged
50
years
or
older).
TARI
is
indicative
repeated
bites,
points
permanent
settlement
A.
around
City.
Therefore,
we
believe
that
greater
efforts
should
be
implemented
towards
detection
tick-associated
infections
area,
including
Severe
fever
thrombocytopenia
syndrome
virus
considered
as
major
vector.
