The
Chinese
giant
salamander
(CGS),
Andrias
davidianus,
the
largest
living
amphibian,
is
of
significant
conservation
importance
for
its
wild
populations
and
serves
as
a
valuable
economic
species
in
aquaculture.
Given
that
male
CGS
are
larger
than
female,
understanding
mechanisms
behind
gonadal
differentiation
development
critical
optimizing
production
This
study
conducted
small
RNA-seq
on
female
gonads
during
two
key
windows
CGS.
PCA
analysis
revealed
distinct
clustering
within
groups
clear
between
groups.
A
total
374
miRNAs
were
identified,
including
162
known
212
novel
miRNAs.
Differential
expression
enrichment
across
time
points
identified
nine
sex-biased
involved
differentiation,
let-7b-3p,
miR-3529-3p,
miR-34c-5p,
miR-10-5p,
miR-7-5p,
four
miRNAs,
network
these
with
their
target
genes
constructed.
Furthermore,
our
findings
suggest
processes
likely
regulated
by
provides
comprehensive
related
CGS,
offering
theoretical
foundation
enhancing
aquaculture
productivity
through
targeted
sex
ratio
management.
Nature Ecology & Evolution,
Год журнала:
2022,
Номер
6(9), С. 1354 - 1366
Опубликована: Июль 11, 2022
Abstract
Triploids
are
rare
in
nature
because
of
difficulties
meiotic
and
gametogenic
processes,
especially
vertebrates.
The
Carassius
complex
cyprinid
teleosts
contains
sexual
tetraploid
crucian
carp/goldfish
(
C.
auratus
)
unisexual
hexaploid
gibel
carp/Prussian
carp
gibelio
lineages,
providing
a
valuable
model
for
studying
the
evolution
maintenance
mechanism
polyploids
Here
we
sequence
genomes
two
species
assemble
their
haplotypes,
which
contain
subgenomes
(A
B),
to
chromosome
level.
Sequencing
coverage
analysis
reveals
that
is
an
amphitriploid
(AAABBB)
with
triploid
sets
chromosomes;
each
set
derived
from
different
ancestor.
Resequencing
data
strains
show
reproduction
has
been
maintained
over
0.82
million
years.
Comparative
genomics
intensive
expansion
alterations
cell
cycle-related
genes
oocyte-specific
histone
variant.
Cytological
assays
indicate
produces
unreduced
oocytes
by
alternative
ameiotic
pathway;
however,
sporadic
homologous
recombination
high
rate
gene
conversion
also
exist
.
These
genomic
changes
might
have
facilitated
purging
deleterious
mutations
maintaining
genome
stability
this
fish.
Overall,
current
results
provide
novel
insights
into
evolutionary
mechanisms
reproductive
success
polyploid
Water Biology and Security,
Год журнала:
2024,
Номер
3(3), С. 100271 - 100271
Опубликована: Май 16, 2024
Aquaculture
originates
from
ancient
Chinese
wisdom,
and
is
considered
the
most
efficient
food-producing
industry.
About
70
years
ago,
New
China
proposed
an
industrial
approach
to
fish
production
made
a
policy
decision
begin
modern
aquaculture
development.
As
one
of
lucky
persons
since
early
1980s,
I
have
committed
my
scholarly
career
studies
on
genetics
breeding
biotechnology
polyploid
gibel
carp
(Carassius
gibelio).
Here,
several
significant
recent
innovations,
such
as
proposition
amphitriploid
concept,
association
ploidy
changes
with
reproduction
transition,
finding
unique
ameio-fusiongenesis
mode,
establishment
controllable
fertility
approach,
creation
intermuscular
bone-free
mutants,
well
recreation
desirable
goldfish,
are
introduced
emphasized
active
participant
these
innovations.
Additionally,
some
innovations
contributions
also
highlighted
in
other
aspects
including
feed
development,
disease
control,
facilities
equipment
upgrading,
paradigm
mode
changes.
This
comprehensive
synthesis
wisdom
seeks
provide
valuable
insights
into
field
historical
basis.
Water Biology and Security,
Год журнала:
2022,
Номер
1(4), С. 100062 - 100062
Опубликована: Июль 31, 2022
Aquatic
viruses
are
naturally
present
in
the
aquatic
environment
and
number
of
is
staggering.
Various
multicellular
organisms
ecosystems
may
be
infected,
cross-species
transmitted,
manipulated,
killed
by
viruses,
which
can
lead
to
cascading
ecological
effects.
The
unicellular
alter
interactions
between
host
individuals,
essential
effecting
or
maintaining
dynamics
microbial
communities,
horizontal
gene
transfer,
biodiversity,
modulating
processes
globally.
Meanwhile,
hosts
also
impact
viral
abundance
diversity.
Microbial
diversity
drives
multifunctionality
ecosystems,
while
shape
complex
communities
crucial
for
ecosystem
functioning.
This
review
focuses
on
molecular,
genetic,
evolutionary,
ecosystemic
advances
related
emerging
reemerging
presents
contexts,
novel
tools,
investigative
approaches
pertaining
study
virology,
discusses
mechanisms
affect
ecosystems.
paper
provides
an
efficient
broadly-based
blueprint
improving
understanding
viruses.
