Phylogenetics and Evolutionary Dynamics of Yunnan Acrididae Grasshoppers Inferred from 17 New Mitochondrial Genomes
Keyao Zhang,
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Jing Song,
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Junhui Lu
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et al.
Insects,
Journal Year:
2025,
Volume and Issue:
16(2), P. 151 - 151
Published: Feb. 3, 2025
Yunnan
Province,
a
global
biodiversity
hotspot,
hosts
diverse
array
of
Acrididae
grasshoppers
essential
for
ecosystem
dynamics
and
agriculture.
To
elucidate
the
phylogenetic
relationships
evolutionary
history
this
group,
we
sequenced
analyzed
complete
mitochondrial
genomes
from
17
species
endemic
to
Yunnan,
with
genome
lengths
ranging
15,403
15,943
base
pairs.
These
data
were
integrated
sequences
46
additional
construct
comprehensive
trees.
The
maximum-likelihood
tree
identified
four
major
clades
robust
support
(bootstrap
values
>
90%),
revealing
significant
lineage
diversification
during
Early
Eocene
(51.94
million
years
ago,
Mya)
subsequent
radiations
in
Miocene
(~20
Pliocene
(~5
Mya).
divergence
times
correlate
geological
events
climatic
shifts
region,
such
as
uplift
Tibetan
Plateau
intensification
Asian
monsoon.
Notably,
several
within
Coptacrinae
Oxyinae
subfamilies,
particularly
Pseudodotraulia
cornuata
Spathosternum
prasiniferum,
found
be
polyphyletic,
indicating
necessity
taxonomic
revisions.
Further
cluster
analyses
codon
usage
bias
genetic
distance
these
revisions
Acrididae.
This
framework
underpins
conservation
strategies
aimed
at
preserving
Yunnan’s
rich
grasshopper
informs
updates
their
phylogeny.
Language: Английский
A Genome-Wide Analysis of Nuclear Mitochondrial DNA Sequences (NUMTs) in Chrysomelidae Species (Coleoptera)
Insects,
Journal Year:
2025,
Volume and Issue:
16(2), P. 150 - 150
Published: Feb. 2, 2025
Nuclear
mitochondrial
DNA
sequences
(NUMTs)
are
fragments
in
the
nuclear
genome,
and
their
unclear
distribution
Chrysomelidae
species
hinders
selection
of
accurate
molecular
markers
for
identification
phylogenetic
analysis.
Our
study
presents
a
genome-wide
survey
NUMTs
32
species.
Filtering
strategies
based
on
sequence
length
open
reading
frame
(ORF)
features
were
employed
to
identify
protein-coding
genes
(PCGs)
minimally
affected
by
NUMTs.
Phylogenetic
relationships
inferred
from
both
PCG
datasets
COX1
dataset
containing
results
show
that
chromosomally
specific,
species-specific,
widely
distributed.
ATP8,
COX1,
ND1,
ND4
identified
as
relatively
reliable
markers.
analysis
is
influenced
other
factors
such
type
saturation.
A
total
66
independent
gene
integration
events
estimated
across
species,
mostly
distinct
lineages.
These
findings
suggest
reflect
key
evolutionary
processes
flow
lineage
diversification.
Their
prevalence
emphasizes
need
refined
analysis,
while
also
highlighting
importance
understanding
contribution
species’
history.
Language: Английский