Molecular Ecology,
Journal Year:
2021,
Volume and Issue:
30(24), P. 6551 - 6565
Published: Oct. 1, 2021
Theory
predicts
that
the
distribution
of
genetic
diversity
in
a
landscape
is
strongly
dependent
on
connectivity
metapopulation
and
dispersal
individuals
between
patches.
However,
influence
explicit
spatial
configurations
such
as
dendritic
landscapes
metapopulations
still
understudied,
theoretical
corroborations
empirical
patterns
are
largely
lacking.
Here,
we
used
microsatellite
data
stochastic
simulations
two
freshwater
amphipods
28,000
km2
riverine
network
to
study
strategies
their
diversity.
We
found
significant
imprint
effects
local
global
both
amphipod
species.
Data
from
95
sites
showed
allelic
richness
significantly
increased
towards
more
central
nodes
network.
This
was
also
seen
for
observed
heterozygosity,
yet
not
expected
heterozygosity.
Genetic
differentiation
with
instream
distance.
In
simulation
models,
depending
mutational
model
assumed,
upstream
movement
probability
rate,
respectively,
emerged
key
factors
explaining
empirically
differentiation.
Surprisingly,
role
site-specific
carrying
capacities,
example
by
assuming
direct
dependency
population
size
river
size,
less
clear
cut:
while
our
best
fitting
scenario
included
this
feature,
over
all
simulations,
scaling
capacities
did
increase
data-model
fit.
highlights
importance
behaviour
along
networks
shaping
Sustainability,
Journal Year:
2024,
Volume and Issue:
16(8), P. 3217 - 3217
Published: April 11, 2024
Biodiversity
is
the
basis
for
maintenance
and
functioning
of
ecosystems.
Genetic
diversity
at
heart
biodiversity,
therefore
an
understanding
current
state
plant
genetic
can
contribute
to
future
provision
sustainable
ecological
values
services
by
This
study
was
conducted
in
Irtysh
River
basin
(five
tributaries)
with
dominant
species
river
valley
forests,
Betula
pendula.
Sampling
points
were
set
up
approximately
10
km
intervals
within
each
tributary
using
a
random
sampling
method
studies
based
on
chloroplast
microsatellite
molecular
markers.
The
results
indicated
that
(1)
nine
alleles
identified
198
samples.
pendula
relatively
rich
all
tributaries
(I
=
0.216~0.546);
significantly
higher
downstream
area
than
midstream
upstream
areas
basin.
differentiation
low
level
except
Berezek
River,
where
high.
(2)
variation
mainly
derived
from
populations,
accounting
62%
total
variation.
distance
positively
correlated
geographical
(p
<
0.05).
population
structure
divided
into
two
major
groups.
(3)
Twelve
haplotypes
upper
H2
H4,
while
lower
these
H1
H3.
Therefore,
this
paper
suggests
establishment
germplasm
resource
bank
populations
implementation
priority
conservation
measures
diversity,
so
as
realize
value
forests
Molecular Ecology Resources,
Journal Year:
2023,
Volume and Issue:
unknown
Published: Sept. 15, 2023
Abstract
The
unprecedented
loss
of
global
biodiversity
is
linked
to
multiple
anthropogenic
stressors.
New
conservation
technologies
are
urgently
needed
mitigate
this
loss.
rights,
knowledge
and
perspectives
Indigenous
peoples
in
conservation—including
the
development
application
new
technologies—are
increasingly
recognised.
Advances
germplasm
cryopreservation
germ
cell
transplantation
(termed
‘broodstock
surrogacy’)
techniques
offer
exciting
tools
preserve
biodiversity,
but
their
has
been
underappreciated.
Here,
we
use
teleost
fishes
as
an
exemplar
group
outline
(1)
power
these
genome‐wide
genetic
diversity,
(2)
need
apply
a
genomic
lens
when
selecting
individuals
for
cryobanking
broodstock
surrogacy
(3)
value
considering
cultural
significance
resources.
We
conclude
by
discussing
opportunities
challenges
conserving
threatened
fish
beyond.
Molecular Ecology,
Journal Year:
2021,
Volume and Issue:
30(24), P. 6551 - 6565
Published: Oct. 1, 2021
Theory
predicts
that
the
distribution
of
genetic
diversity
in
a
landscape
is
strongly
dependent
on
connectivity
metapopulation
and
dispersal
individuals
between
patches.
However,
influence
explicit
spatial
configurations
such
as
dendritic
landscapes
metapopulations
still
understudied,
theoretical
corroborations
empirical
patterns
are
largely
lacking.
Here,
we
used
microsatellite
data
stochastic
simulations
two
freshwater
amphipods
28,000
km2
riverine
network
to
study
strategies
their
diversity.
We
found
significant
imprint
effects
local
global
both
amphipod
species.
Data
from
95
sites
showed
allelic
richness
significantly
increased
towards
more
central
nodes
network.
This
was
also
seen
for
observed
heterozygosity,
yet
not
expected
heterozygosity.
Genetic
differentiation
with
instream
distance.
In
simulation
models,
depending
mutational
model
assumed,
upstream
movement
probability
rate,
respectively,
emerged
key
factors
explaining
empirically
differentiation.
Surprisingly,
role
site-specific
carrying
capacities,
example
by
assuming
direct
dependency
population
size
river
size,
less
clear
cut:
while
our
best
fitting
scenario
included
this
feature,
over
all
simulations,
scaling
capacities
did
increase
data-model
fit.
highlights
importance
behaviour
along
networks
shaping
