Unraveling the genomic diversity and admixture history of captive tigers in the United States
Proceedings of the National Academy of Sciences,
Journal Year:
2024,
Volume and Issue:
121(39)
Published: Sept. 19, 2024
Genomic
studies
of
endangered
species
have
primarily
focused
on
describing
diversity
patterns
and
resolving
phylogenetic
relationships,
with
the
overarching
goal
informing
conservation
efforts.
However,
few
investigated
genomic
housed
in
captive
populations.
For
tigers
(
Panthera
tigris
),
individuals
vastly
outnumber
those
wild,
but
their
remains
largely
unexplored.
Privately
owned
tiger
populations
remained
an
enigma
community,
some
believing
that
these
are
severely
inbred,
while
others
believe
they
may
be
a
source
now-extinct
diversity.
Here,
we
present
large-scale
genetic
study
private
(non-zoo)
population
United
States,
also
known
as
“Generic”
tigers.
We
find
Generic
has
admixture
fingerprint
comprising
all
six
extant
wild
subspecies.
Of
138
sequenced
for
purpose
this
study,
no
individual
had
ancestry
from
only
one
show
comparable
amount
relative
to
most
subspecies,
variants,
fewer
deleterious
mutations.
observe
inbreeding
coefficients
similar
populations,
although
there
within
both
substantially
inbred.
Additionally,
develop
reference
panel
can
used
imputation
accurately
distinguish
assign
ultralow
coverage
(0.25×)
data.
By
providing
cost-effective
alternative
whole-genome
sequencing
(WGS),
provides
resource
assist
efforts
ex-
situ
Language: Английский
Revealing extensive inbreeding and less-efficient purging of deleterious mutations in wild Amur tigers in China
Tianming Lan,
No information about this author
Haimeng Li,
No information about this author
Boyang Liu
No information about this author
et al.
Journal of genetics and genomics/Journal of Genetics and Genomics,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 1, 2024
Inbreeding
increases
genome
homozygosity
within
populations,
which
can
exacerbate
inbreeding
depression
by
exposing
homozygous
deleterious
alleles
that
are
responsible
for
declines
in
fitness
traits.
In
small
genetic
purging
occurs
under
pressure
of
natural
selection
acts
as
an
opposing
force,
contributing
to
a
reduction
alleles.
Both
and
paramount
the
field
conservation
genomics.
The
Amur
tiger
(Panthera
tigris
altaica)
lives
populations
forests
Northeast
Asia
is
among
most
endangered
animals
on
planet.
Using
genome-wide
assessment
comparison,
we
reveal
substantially
higher
more
extensive
wild
tigers
(F
Language: Английский
A Pipeline and Recommendations for Population and Individual Diagnostic SNP Selection in Non‐Model Species
Molecular Ecology Resources,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 29, 2024
ABSTRACT
Despite
substantial
reductions
in
the
cost
of
sequencing
over
last
decade,
genetic
panels
remain
relevant
due
to
their
cost‐effectiveness
and
flexibility
across
a
variety
sample
types.
In
particular,
single
nucleotide
polymorphism
(SNP)
are
increasingly
favoured
for
conservation
applications.
SNP
often
used
because
adaptability,
effectiveness
with
low‐quality
samples,
cost‐efficiency
population
monitoring
forensics.
However,
selection
diagnostic
SNPs
assignment
individual
identification
can
be
challenging.
The
consequences
poor
under‐powered
panels,
inaccurate
results,
monetary
loss.
Here,
we
develop
novel
user‐friendly
pipeline
(mPCRselect)
that
select
and/or
identification.
mPCRselect
allows
any
researcher,
who
has
sufficient
SNP‐level
data,
design
successful
cost‐effective
panel
diploid
species
concern.
Language: Английский