bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2022,
Volume and Issue:
unknown
Published: Jan. 13, 2022
Abstract
Ecological
and
evolutionary
dynamics
of
range
expansions
are
shaped
by
both
dispersal
population
growth.
Accordingly,
density-dependence
in
either
or
growth
can
determine
whether
pulled
pushed,
i.e.
expansion
velocities
genetic
diversity
mainly
driven
recent,
low-density
edge
populations,
older
populations
closer
to
the
core.
Despite
this
despite
abundant
evidence
evolution
during
expansions,
impact
density-dependent
its
on
remains
understudied.
Here,
we
used
simulation
models
examine
influence
individual
trait
variation
capacity
density-
dependence
how
it
impacts
position
pulled-pushed
continuum.
First,
found
that
knowing
about
at
greatly
improve
our
ability
predict
an
is
(more)
pushed
pulled.
Second,
costs
sources
(genetic
non-genetic,
versus
dependence)
evolve.
Among
other
scenarios,
tended
become
more
with
time
only
when
was
highly
heritable,
were
low
could
not
When,
hand,
had
no
basis,
but
evolve,
then
time,
More
generally,
results
show
trying
using
information
from
non-expanding
regions
may
be
problematic,
play
a
key
role
determining
stays
environmental
context
(here
costs)
cannot
neglected.
Those
simulations
suggest
new
avenues
research
explore,
terms
theoretical
studies
regarding
ways
empirically
study
vs.
expansions.
Peer Community Journal,
Journal Year:
2023,
Volume and Issue:
3
Published: Nov. 24, 2023
As
human
influence
reshapes
communities
worldwide,
many
species
expand
or
shift
their
ranges
as
a
result,
with
extensive
consequences
across
levels
of
biological
organization.
Range
expansions
can
be
ranked
on
continuum
going
from
pulled
dynamics,
in
which
low-density
edge
populations
provide
the
“fuel”
for
advance,
to
pushed
dynamics
high-density
rear
“push”
expansion
forward.
While
theory
suggests
that
evolution
during
range
could
lead
become
time,
empirical
comparisons
phenotypic
divergence
vs.
contexts
are
lacking.
In
previous
experiment
using
Trichogramma
brassicae
wasps
model,
we
showed
were
more
when
connectivity
was
lower.
Here
used
descendants
these
experimental
landscapes
look
at
how
process
and
interact
shape
evolution.
Interestingly,
found
no
clear
consistent
shifts,
whether
along
gradients
between
reference
low
replicates,
focused
trait
expression.
However,
evidence
changes
density-dependence,
particular
regarding
dispersal:
went
positive
negative
density-dependent
dispersal
edge,
but
only
high.
leads
expansions,
our
results
confirm
predictions
may
pulled,
add
nuance
by
showing
landscape
conditions
slow
down
cancel
this
process.
This
shows
need
jointly
consider
context
accurately
predict
consequences.
Oxford University Press eBooks,
Journal Year:
2025,
Volume and Issue:
unknown, P. 192 - 217
Published: Jan. 27, 2025
Abstract
This
chapter
develops
four
diverse
case
studies:
an
invasive
species;
tumour
growth;
gene
drives;
and
the
spread
of
a
pathogen.
The
shows
how
all
these
cases
can
be
understood
as
invasions,
it
examines
theory
that
has
been
developed
might
applied
to
managing
such
invasions.
maps
existing
management
strategies
evolutionary
perspective
allow
development
novel
strategies.
Oxford University Press eBooks,
Journal Year:
2025,
Volume and Issue:
unknown, P. 65 - 92
Published: Jan. 27, 2025
Abstract
This
chapter
shows
that
chance
events
(stochasticity)
can
play
a
major
role
in
invasions.
explains
the
ecological
sources
of
stochasticity,
and
how
we
might
incorporate
this
stochasticity
into
our
understanding.
reproduction
dispersal
all
combine
to
make
real-world
invasions
difficult
predict.
In
aggregate,
these
also
cause
move
slower,
or
faster,
than
they
would
otherwise.
Oxford University Press eBooks,
Journal Year:
2025,
Volume and Issue:
unknown, P. 93 - 115
Published: Jan. 27, 2025
Abstract
This
chapter
shows
that
in
addition
to
ecological
stochasticity,
invasion
fronts
can
experience
substantial
evolutionary
stochasticity
also.
The
explains
these
sources
of
and
examines
the
outcomes
emerge
from
this
stochasticity.
These
include
clines
genetic
diversity,
mutation
surfing,
expansion
load
leading
slowed
invasions.
Oxford University Press eBooks,
Journal Year:
2025,
Volume and Issue:
unknown, P. 35 - 64
Published: Jan. 27, 2025
Abstract
This
chapter
shows
that
the
process
of
invasion
causes
strong
evolutionary
forces
to
emerge
on
front.
On
fronts,
natural
selection
and
spatial
sorting
can
cause
rapid
change
that,
in
turn,
invasions
accelerate.
sets
out
historical
development
these
ideas,
clarifies
some
confusion
around
terms
processes.
Oxford University Press eBooks,
Journal Year:
2025,
Volume and Issue:
unknown, P. 16 - 34
Published: Jan. 27, 2025
Abstract
This
chapter
sets
out
the
basic
ecological
theory
for
why
invasions
happen.
It
historical
development
of
this
theory,
and
explains
how
predicts
that
spread
at
a
constant
rate.
The
then
goes
on
to
examine
common
case
accelerate,
can
be
extended
capture
possibility.
Oxford University Press eBooks,
Journal Year:
2025,
Volume and Issue:
unknown, P. 139 - 164
Published: Jan. 27, 2025
Abstract
This
chapter
is
a
grab
bag
of
ideas
that
elaborate
in
various
ways
on
the
theory
developed
Chapters
1–6.
The
looks
at
how
moving
from
one-
to
two-dimensional
space
can
change
our
expectations.
It
also
trade-offs
between
traits
introduces
idea
anomalous
invasion
speeds
and
examines
effect
spatial
heterogeneity
environment.
Oxford University Press eBooks,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 27, 2025
Abstract
Why
do
populations
spread
through
space,
and
how
they
change
as
so?
In
answering
these
questions,
this
book
shows
that
phenomena
diverse
tumour
growth
the
of
invasive
species
are
all
manifestations
same
process.
As
such,
there
ecological
evolutionary
principles
in
common
across
systems.
This
develops
both
history
of,
recent
advances
in,
our
understanding
populations,
using
a
combination
empirical
examples
accessible
theory.
It
evolve
spread,
predictable
unpredictable
ways.
The
finishes
with
new
ideas
for
management
populations.
