Strategies to improve selection compared to selection based on estimated breeding values
bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 13, 2025
Abstract
Background
Selection
of
individuals
based
on
their
estimated
breeding
values
aims
to
maximize
response
selection
the
next
generation
in
additive
model.
However,
when
aim
is
not
only
about
short-term
population-wide
genetic
gain
but
also
over
multiple
generations,
an
optimal
strategy
as
clear-cut,
maintenance
diversity
may
become
important
factor.
This
study
provides
extended
comparison
existing
strategies
a
unifying
testing
pipeline
using
simulation
software
MoBPS.
Results
Applying
weighting
factor
SNP
effects
frequency
beneficial
allele
resulted
increase
long-term
1.6%
after
50
generations
while
reducing
inbreeding
rates
by
16.2%
compared
truncation
values.
this
losses
1.2%
with
break-even
point
reached
25
generations.
In
contrast,
inclusion
average
kinship
individual
top
population
additional
trait
index
weight
17.5%
no
and
increased
gains
4.3%
15.8%,
achieving
very
similar
efficiency
use
optimum
contribution
selection.
Combining
management
strategies,
weights
for
each
optimized
evolutionary
algorithm
scheme
5.1%
37.3%
reduced
rates.
The
proposed
included
contribution,
frequency,
index,
avoiding
matings
between
related
individuals,
lowering
proportion
selected
individuals.
Conclusions
combination
was
shown
be
far
superior
any
singular
method
tested
study.
As
efficient
methods
does
necessarily
lead
comes
at
extra
costs,
it
critical
companies
implement
such
success.
Language: Английский
Comparative evaluation of phenotypic, pedigree, and family-based selection in insect breeding using stochastic simulation
animal,
Journal Year:
2025,
Volume and Issue:
19(4), P. 101475 - 101475
Published: Feb. 22, 2025
Language: Английский
Evolution under Domestication: Genetic differentiation in black soldier fly (Hermetia illucens) populations subjected to recent selective breeding
bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 18, 2025
Abstract
The
black
soldier
fly
(BSF;
Hermetia
illucens
)
is
widely
utilized
in
commercial
and
research
applications
for
waste
bioconversion
sustainable
protein
production.
However,
prolonged
captivity
artificial
selection
can
shape
genetic
diversity,
potentially
influencing
adaptability
long-term
population
stability.
This
study
examined
how
recent
selective
breeding,
drift,
relaxed
have
influenced
differentiation
BSF
populations
over
a
short
timeframe.
Using
mitochondrial
cytochrome
oxidase
1
(
CO1
genome-wide
RAD
sequencing,
structure,
heterozygosity,
signatures
across
eleven
populations,
including
selectively
bred,
wild-derived,
strains
were
analysed.
Results
revealed
that
rapid
shifts
occurred
within
bred
(LA
to
LE)
∼5
years,
driven
by
selection,
subsequent
relaxation,
environmental
adaptation.
decline
effective
size
(Ne)
observed
post-COVID-19
suggests
bottlenecks,
which
may
further
contributed
drift
differentiation.
While
domesticated
exhibited
reduced
diversity
signs
of
inbreeding,
wild-type
under
retained
higher
heterozygosity.
Genome-wide
analyses
identified
adaptive
divergence
among
with
balancing
sweeps
shaping
variation.
Notably,
despite
shared
ancestry,
persisted
reinforcing
pressures
continue
influence
their
genomic
landscape
even
after
targeted
was
relaxed.
These
findings
underscore
the
need
monitor
breeding
programs
maintain
adaptability,
enhance
resilience,
mitigate
risks
from
collapse.
Language: Английский