Single-nucleus transcriptomics of wing sexual dimorphism and scale cell specialization in sulphur butterflies
bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 12, 2024
Abstract
The
evolution
of
sexual
secondary
characteristics
necessitates
regulatory
factors
that
confer
identity
to
differentiating
tissues
and
cells.
In
Colias
eurytheme
butterflies,
males
exhibit
two
specialized
wing
scale
types
—
UV-iridescent
(UVI)
lanceolate
scales
absent
in
females
likely
integral
male
courtship
behavior.
This
study
investigates
the
mechanisms
single-nucleus
transcriptomics
underlying
these
sexually
dimorphic
cell
during
development.
We
show
Doublesex
(Dsx)
expression
is
itself
required
repress
UVI
state
females,
while
unexpectedly,
activation
independent
from
Dsx.
melanic
marginal
band,
Dsx
each
sex
enforce
presence
males,
their
absence
females.
Single-nucleus
RNAseq
reveals
precursors
distinctive
gene
profiles
at
40%
pupal
development,
with
marker
genes
include
regulators
transcription,
signaling,
cytoskeletal
patterning,
chitin
secretion.
Both
male-specific
share
a
low
Bric-a-brac
(
Bab
)
transcription
factor,
key
repressor
fate.
ChIP-seq
profiling
suggests
binds
cis-regulatory
regions
markers
associated
fate,
including
potential
effector
involved
regulation
processes
secretion,
loci
showing
signatures
recent
selective
sweeps
an
UVI-polymorphic
population.
These
findings
open
new
avenues
for
exploring
patterning
shedding
light
on
driving
specification
sex-specific
states
differentiation
ultrastructures.
Language: Английский
Digest: Sexually selected traits can affect individual fitness and trait evolution in a butterfly species
Evolution,
Journal Year:
2024,
Volume and Issue:
78(9), P. 1639 - 1640
Published: July 9, 2024
Wedell
and
Kemp
([2024].
Examined
the
importance
of
female
sexual
preferences
for
male
UV
reflectance
on
offspring
viability
evolution
traits
in
butterfly
Eurema
hecabe.
Female
were
found
to
have
multiple
consequences,
including
increased
trait
value,
higher
viability,
reduced
mutational
load.
These
findings
highlight
that
specific
can
also
further
consequences
individual
fitness
morphological
characteristics.
Language: Английский