Disease threats to tigers and their prey
Frontiers in Ecology and Evolution,
Год журнала:
2023,
Номер
11
Опубликована: Апрель 5, 2023
The
contraction
of
the
global
tiger
population
over
last
100
years
into
small,
often
isolated
subpopulations
has
made
them
increasingly
vulnerable
to
impact
disease.
Despite
this,
health
wild
tigers
continues
be
insufficiently
funded
and
explored.
For
example,
canine
distemper
virus
(CDV),
been
associated
with
localized
declines
increased
risk
extinction,
yet
received
little
research
attention
in
most
range
countries.
emergence
new
pathogenic
threats
posed
fresh
challenges,
including
African
swine
fever
(ASFV),
which
potential
devastate
boar
populations,
severe
acute
respiratory
syndrome
coronavirus
(SARS-CoV2)
implications
for
conservation
that
remain
unknown.
objective
this
review
is
synthesize
current
on
their
prey
impacts
wild.
Published
sources
are
interpreted
based
three
mechanisms
through
disease
can
affect
viability
populations:
(1)
by
reducing
survival
adult
tigers,
(2)
breeding
productivity,
(3)
carrying
capacity
habitat
decreased
abundance.
Examples
CDV,
SARS-CoV2,
carnivore
protoparvovirus
1
ASFV
used
illustrate
these
processes
inform
discussion
mitigation
priorities.
Язык: Английский
Prevalence of feline leukemia virus and feline immunodeficiency virus in cats from southern Italy: a 10-year cross-sectional study
Frontiers in Veterinary Science,
Год журнала:
2023,
Номер
10
Опубликована: Ноя. 6, 2023
Feline
immunodeficiency
virus
(FIV)
and
feline
leukemia
(FeLV)
are
well-known
retroviruses
causing
important
infections
in
domestic
cats
worldwide.
The
goal
of
this
study
was
to
determine
the
prevalence
FeLV
FIV
cat
living
indoor
outdoor
southern
Italy.The
survey
conducted
on
1322
stray
owned
from
regions
Campania,
Basilicata,
Calabria.
It
carried
out
over
a
10-year
period
obtain
more
realistic
picture
these
retroviral
diseases
country.
status
determined
by
enzyme-linked
immunosorbent
assay
(ELISA)
using
commercial
kit
(SNAP
Combo
Plus
FeLV/FIV,
IDEXX).
Risk
factors
were
analysed
logistic
regression.The
results
showed
that
101/1322
(7.64%)
positive
for
antigen
110/1322
(8.32%)
antibody.
Twenty-six
(1.97%)
both
infection.
Our
similar
those
published
recent
studies
Europe.
A
statistically
significant
association
(p
<
0.05)
found
between
year,
province,
region,
lifestyle
risk
positivity
instead
associated
only
with
year
lifestyle.
Язык: Английский
Molecular Detection of Parvovirus in Captive Siberian Tigers and Lions in Northeastern China From 2019 to 2021
Frontiers in Microbiology,
Год журнала:
2022,
Номер
13
Опубликована: Май 12, 2022
The
fact
that
wild
felines
are
carriers
of
pernicious
infectious
viruses
should
be
a
major
concern
due
to
the
potential
cross-species
transmission
between
and
human
or
domestic
animals.
However,
studies
on
virus
in
captive
felines,
especially
tigers,
thin
ground.
In
this
study,
we
screened
four
viruses,
namely,
feline
parvovirus
(FPV),
coronavirus
(FCoV),
canine
distemper
(CDV),
influenza
A
(IAV),
blood
samples
285
Siberian
tigers
(Panthera
tigris
altaica)
spleen
two
deceased
lions
leo),
which
were
collected
from
2019
2021
three
Tiger
Parks
northeast
China.
Nucleic
acids
isolated
positive
for
FPV
by
PCR,
rate
was
4.6%
(13/285)
tigers.
Furthermore,
VP2
gene
amplified
nested
sequences
these
six
strains
shared
98.3-99.9%
homology
with
reference.
key
amino
acid
sites
protein
consistent
reference
strains.
Phylogenetic
analysis
based
showed
FPV-positive
grouped
within
clade
closely
related
Asian
clade.
results
study
circulated
northeastern
China
provided
valuable
information
epidemiology
felines.
Therefore,
suggest
regular
antibody
monitoring
booster
immunization
performed.
Язык: Английский
Prevalence of Eight Viruses in Captive Amur Tigers (Panthera tigris altaica) From Harbin, China
Wildlife Letters,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 27, 2024
ABSTRACT
The
Amur
tiger,
a
flagship
species
in
wildlife
conservation
China,
was
the
focus
of
this
study,
which
is
aimed
at
detecting
viral
infections
that
could
threaten
survival
population.
A
total
60
tigers
were
examined,
including
21
blood
samples
and
nasopharyngeal
swab
samples.
Various
PCR
methods
used
to
detect
viruses:
standard
applied
identify
feline
parvovirus
(FPV),
nested
for
herpesvirus‐1
(FHV‐1),
calicivirus
(FCV),
coronavirus
(FCoV),
leukemia
virus
(FeLV),
immunodeficiency
(FIV),
qPCR
canine
distemper
(CDV)
influenza
(IAV).
results
showed
70.0%
(42/60)
tested
positive
least
one
infection.
Specifically,
prevalence
FPV,
FHV‐1,
FCoV
14.3%
(3/21),
26.7%
(16/60),
56.7%
(34/60),
respectively.
co‐infection
rate
21.4%
(9/42)
observed
among
infected
tigers.
No
found
FCV,
FIV,
FeLV,
CDV,
or
IAV.
Overall,
first
study
presence
China
confirms
their
exposure
FCoV.
Язык: Английский
Prevalence of four viruses in captive Siberian tigers from Northeastern China
Transboundary and Emerging Diseases,
Год журнала:
2022,
Номер
69(5)
Опубликована: Фев. 13, 2022
Our
study
investigated
the
prevalence
of
feline
herpesvirus-1
(FHV-1),
calicivirus
(FCV),
immunodeficiency
virus
(FIV),
and
leukemia
(FeLV)
in
captive
Siberian
tigers
Northeastern
China.
A
total
324
blood
samples
33
nasopharyngeal
swab
collected
from
2019
to
2021
three
cities
were
by
nested
PCR.
The
results
showed
that
28.1%
(91/324)
infected
with
at
least
one
virus;
positive
rates
FHV-1,
FCV,
FIV
17.3%,
13.6%,
0.9%,
respectively;
coinfection
was
13.2%.
No
FeLV-positive
sample
detected.
And
we
found
is
best
for
FIV,
FeLV
detection,
but
swabs
FHV-1.
By
comparing
gD
genes,
TK
gene,
gI
gene
homology
FHV-1
strains
this
be
91.5%-99.9%
shared
domestic
cats.
Based
on
a
comparison
nucleic
acid
sequences
13
FCV
strains,
strain
HB-1926
other
only
about
77.7%,
99.3%
98.6%
Urnaba
American
cat
TG1
Chinese
tiger,
respectively.
However,
12
87.1%-87.5%
compared
Phylogenetic
tree
analysis
not
same
clade
as
strains.
fragments
gag-p26,
pol-RT,
pol-RNAse
tiger
more
than
99%
cats
subtype
A.
This
demonstrated
China
exposed
it
necessary
develop
effective
vaccines
improve
daily
management
measures.
Язык: Английский