Environmental Science & Technology,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 26, 2024
Global
changes
can
profoundly
affect
the
sex
determination
and
reproductive
output
of
marine
organisms,
disrupting
population
structure
ecosystems.
High
CO2driven
low
pH
in
context
ocean
acidification
(OA)
has
been
shown
to
severely
various
calcifiers,
but
less
is
known
about
extent
which
influences
reproduction
particularly
mollusks.
This
study
first
report
a
biased
ratio
over
multiple
generations
toward
females,
driven
by
exposure
high
CO2-induced
environments,
using
ecologically
economically
important
Portuguese
oyster
(Crassostrea
angulata)
as
model.
phenomenon,
we
term
pH-mediated
(PSD),
no
consequences
for
fecundity,
gonadal
development,
or
function
offspring.
Moreover,
PSD
persisted
into
second
year
was
inherited
across
generations.
Transcriptomic
analysis
indicates
associated
with
activation
Wnt
signaling
pathway
females
inhibition
spermiogenesis-related
functions
males.
work
expands
our
understanding
environmental
highlights
possible
impact
global
on
dynamics
mollusks
other
organisms.
bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2023,
Номер
unknown
Опубликована: Июль 7, 2023
Abstract
Pacific
oysters
(
Magallana
gigas,
also
known
as
Crassostrea
gigas
),
the
most
widely
farmed
oysters,
are
under
threat
from
climate
change
and
emerging
pathogens.
In
part,
their
resilience
may
be
affected
by
microbiome,
which,
in
turn,
influenced
ocean
warming
acidification.
Consequently,
for
three
weeks,
we
exposed
early-development
oyster
spat
to
different
temperatures
(18
24
°C)
p
CO
2
levels
(800,
1600
2800
µ
atm)
a
fully
crossed
design.
Under
all
conditions,
microbiome
developed
over
time,
with
potentially
pathogenic
ciliates
Uronema
marinum
)
greatly
reduced
treatments,
suggesting
that
spat’s
undergoes
adaptive
shifts
age.
The
composition
differed
significantly
temperature,
but
not
acidification,
indicating
M.
microbiomes
can
altered
resilient
acidification
our
experiments.
These
findings
highlight
microbiome’s
flexibility
environmental
changes
well
its
“protective”
capability
against
microbes.
Coastal
cities
are
exposed
to
increasing
risks
of
flooding
from
sea-level
rise.Climate
change
is
expected
double
the
frequency
coastal
within
next
decade,
and
some
areas
could
experience
floods
a
magnitude
100
times
higher
than
currently
(Vitousek
et
al.,
2017).People
living
in
at-risk
often
ignore
impact
climate
on
flood
intensity
frequency.Immersive
visual
storytelling
techniques
proved
promising
powerful
tools
engage
with
raise
awareness
hazards.Here,
we
introducing
framework
use
Virtual
Reality
(VR)
reach
better
people
help
them
understand
their
community.We
developed
virtual
which
can
be
immersed
its
intensity.We
used
combination
UAV
imagery
digital
photogrammetric
create
environment
recognize
real
locations
neighborhood
GIS
data
apply
water
texture
Unity3D
levels.This
study
aimed
quantify
microplastic
(MP)
concentration
analyze
spatial
temporal
variabilities
concentrations
during
tidal
cycle
Humboldt
Bay,
California.To
get
an
approximation
MP
concentration,
both
sediment
samples
were
taken
at
five
different
stations,
twice
one
cycle.Sampling
was
conducted
two
cruises,
19th
21st
September
2020.The
processed
lab
using
density
separation
procedure
filtration.MP
determined
average
optical
microscopy
count.Comparison
column
ebb
tides
shows
tide,
49.0
particles/L
±
32.37
(flood)
vs
34.4
16.32
(ebb),
indicating
that
MPs
brought
into
Bay
ocean.The
comparison
lower
energy
conditions
indicates
elevated
when
there
greater
kinetic
energy,
approximated
by
covariance
measured
velocity
North
Channel.This
result
assumed
caused
strong
currents
stirring
up
sediments
settled
column.Due
sampling
cruise
day,
not
confirm
assumption.Water
indicated
heterogeneously
distributed
bay,
found
near
Entrance
Channel
further
north
bay.Sediment
also
indicate
heterogeneous
distribution
lowest
Channel,
15
particles/kg,
where
high
inhibit
settling
particles.This
research
examines
factors
control
pH
-a
shallow,
tidally-driven
estuary
northern
California
(USA)
supports
shellfisheries
economically
important
state.Time-series
hydrographic
sensors
Central
Northern
Ocean
Observing
System
(CenCOOS)
as
well
incubations,
role
tides,
biological
productivity,
carbonate
dissolution
controlling
various
timescales.Differences
pH,
dissolved
oxygen,
chlorophyll,
temperature
between
in-bay
sensor
flux
exerts
long-term,
seasonal
but
productivity
substantially
modifies
carbon
thereby
daily
weekly
timescales.Sediment
collected
bay
2021
dissolution.Sediments
incubated
for
three
days
stirred
unstirred
(to
mimic
mixing
no
respectively)
DO,
alkalinity
monitored.For
all
large
increases
suggested
considerable
dissolution.When
scaled
bay's
in-situ
suspended
concentrations,
may
exert
supplementary
similar
time
scales
effect
less.
Environmental Science & Technology,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 26, 2024
Global
changes
can
profoundly
affect
the
sex
determination
and
reproductive
output
of
marine
organisms,
disrupting
population
structure
ecosystems.
High
CO2driven
low
pH
in
context
ocean
acidification
(OA)
has
been
shown
to
severely
various
calcifiers,
but
less
is
known
about
extent
which
influences
reproduction
particularly
mollusks.
This
study
first
report
a
biased
ratio
over
multiple
generations
toward
females,
driven
by
exposure
high
CO2-induced
environments,
using
ecologically
economically
important
Portuguese
oyster
(Crassostrea
angulata)
as
model.
phenomenon,
we
term
pH-mediated
(PSD),
no
consequences
for
fecundity,
gonadal
development,
or
function
offspring.
Moreover,
PSD
persisted
into
second
year
was
inherited
across
generations.
Transcriptomic
analysis
indicates
associated
with
activation
Wnt
signaling
pathway
females
inhibition
spermiogenesis-related
functions
males.
work
expands
our
understanding
environmental
highlights
possible
impact
global
on
dynamics
mollusks
other
organisms.
