bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2024,
Volume and Issue:
unknown
Published: April 8, 2024
Ocean
acidification
significantly
affects
marine
calcifiers
like
oysters,
warranting
the
study
of
molecular
mechanisms
DNA
methylation
that
contribute
to
adaptive
plasticity
in
response
environmental
change.
However,
a
consensus
has
not
been
reached
on
extent
which
modules
gene
expression,
and
turn
plasticity,
invertebrates.
In
this
study,
we
investigated
impact
pCO
2
expression
eastern
oyster,
Crassostrea
virginica
.
After
30-day
exposure
control
(572
ppm)
or
elevated
(2,827
ppm),
whole
genome
bisulfite
sequencing
(WGBS)
RNA-Seq
data
were
generated
from
adult
female
gonad
tissue
male
sperm
samples.
Although
differentially
methylated
loci
(DML)
identified
females
(89)
males
(2,916),
there
no
expressed
genes,
only
one
transcript
females.
body
impacted
other
forms
activity
sperm,
such
as
maximum
number
transcripts
per
changes
predominant
expressed.
Elevated
increased
variability
(transcriptional
noise)
but
decreased
noise
females,
suggesting
sex-specific
role
regulation.
Functional
annotation
genes
with
transcript-level
containing
DML
revealed
several
enriched
biological
processes
potentially
involved
response,
including
apoptotic
pathways
signal
transduction,
well
reproductive
functions.
Taken
together,
these
results
suggest
may
regulate
maintain
homeostasis
conditions
could
play
key
resilience
Conservation Biology,
Journal Year:
2022,
Volume and Issue:
37(1)
Published: June 10, 2022
Restoration
of
foundation
species
promises
to
reverse
environmental
degradation
and
return
lost
ecosystem
services,
but
a
lack
standardized
evaluation
across
projects
limits
understanding
recovery,
especially
in
marine
systems.
Oyster
reefs
are
restored
massive
global
declines
reclaim
valuable
the
success
these
has
not
been
systematically
comprehensively
quantified.
We
synthesized
data
on
services
associated
with
oyster
restoration
from
245
pairs
degraded
136
reference
3500
km
U.S.
Gulf
Mexico
Atlantic
coastlines.
On
average,
was
21-fold
increase
production
(mean
log
response
ratio
=
3.08
[95%
confidence
interval:
2.58-3.58]),
34-97%
enhancement
habitat
provisioning
community
abundance
0.51
[0.41-0.61],
mean
richness
0.29
[0.19-0.39],
biomass
0.69
[0.39-0.99]),
54%
more
nitrogen
removal
0.43
[0.13-0.73]),
89-95%
greater
sediment
nutrients
0.67
[0.27-1.07])
organic
matter
0.64
[0.44-0.84])
relative
habitats.
Moreover,
matched
for
services.
Our
results
support
continued
expanded
use
enhance
coastal
systems
match
many
functions
provided
by
reefs.
Limnology and Oceanography Letters,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 29, 2025
Abstract
Oysters
inhabit
a
variety
of
coastal
and
deep‐sea
settings
over
wide
latitudinal
range
have
role
as
ecosystem
engineers.
They
also
represent
an
important
food
source
for
humans
since
hunter‐gatherer
times,
which
motivates
interest
in
using
oyster
shells
environmental
life
history
archives.
Still,
oysters
often
been
disregarded
sclerochronology
studies,
although
several
methods
based
on
both
microtextural
geochemical
approaches
successfully
investigated.
We
review
how
these
used
to
improve
interpretations
shell
records,
we
identify
knowledge
gaps
disciplines.
Those
include
ecology
study
larval
dispersal
growth
rates;
archaeology
determine
midden
constructions
site
occupations;
palaeoenvironmental
palaeoclimate
reconstructions
from
tidal
annual
timescales.
suggest
standardizing
procedures
biophysical
models
dispersal.
The Science of The Total Environment,
Journal Year:
2023,
Volume and Issue:
895, P. 165073 - 165073
Published: June 22, 2023
Plastic
forms,
including
plastiglomerate,
pyroplastic,
plasticrusts,
anthropoquinas,
plastistone
and
plastitar,
were
recorded
worldwide.
These
plastic
forms
derive
from
geochemical
or
geophysical
interactions
such
as
heat-induced
fusion
with
rock
in
campfires,
incomplete
combustion,
water
motion-driven
abrasion
the
rocky
intertidal
zone,
deposition
hardened
sediments
bonding
tar.
Thereby,
these
can
profoundly
influence
fate
of
plastics
environment.
This
study
characterized
three
novel
(plasticoncrete,
plastimetal
plastisessiles)
discovered
on
Helgoland
island
(North
Sea).
Plasticoncrete
consisted
common
polyethylene
(PE)
polypropylene
(PP)
fibers
concrete.
Plastimetal
included
PE
rusted
metal.
Plastisessiles
attached
to
benthic
substrates
by
sessile
invertebrates
(oysters
polychaetes).
are
first
composed
two
man-made
materials.
show
that
not
only
result
human-
environment-mediated
but
also
biological
between
plastic.
All
(bulk
density
≥
1.4
g/cm3)
sunk
during
floating
tests
hardly
changed
their
positions
a
13-day
field
experiment
153-
306-day
monitorings,
indicating
local
formation,
limited
mobility
longevity.
Still,
experimentally
detached
floated,
confirming
formation
influences
Furthermore,
showed
plasticoncrete
got
deposited
beach
sand
under
wavy
windy
conditions,
coastal
waves
onshore
winds
drive
sediments.
We
provide
records
Mallorca
(Mediterranean
Sea)
Hikoshima
(Sea
Japan),
respectively,
which
no
phenomena.
our
contributes
growing
fundamental
knowledge
is
essential
understand
role
pollutants
habitats
Sustainability,
Journal Year:
2024,
Volume and Issue:
16(22), P. 9795 - 9795
Published: Nov. 10, 2024
Oysters
have
been
recognized
as
ecological
engineers
for
aquatic
ecosystems,
oyster
reefs
provide
critical
habitats
and
foraging
locations
other
marine
species.
In
the
past
few
decades,
anthropogenic
activities
negatively
impacted
reef
ecosystems
across
globe,
resulting
in
a
significant
decline
their
population.
This
review
critically
examines
causes
extent
of
degradation,
well
effectiveness
restoration
initiatives
employed
to
reverse
this
decline.
Furthermore,
evaluates
strategies
rehabilitate
reefs.
Different
approaches,
such
genetic
improvement,
suitable
site
selection,
seeding
enhance
restorations,
are
reviewed
paper.
some
advanced
approaches
3D
printing,
shell
recycling,
acoustics
technologies
also
discussed
paper,
which
opens
new
doors
researchers
field
ecology.
Challenges
barriers
hindering
successful
addressed,
including
financial
constraints,
regulatory
complexities,
public
engagement.
The
findings
insights
presented
herein
contribute
growing
body
knowledge
on
ecology
serve
valuable
resource
policymakers,
scientists,
conservation
practitioners
seeking
effective
restoring
these
vital
coastal
ecosystems.
Frontiers in Environmental Science,
Journal Year:
2025,
Volume and Issue:
13
Published: Jan. 22, 2025
Oyster
reefs
are
biodiversity
hotspots
with
multiple
ecosystem
functions
and
services
that
declining
worldwide.
Historic
populations
of
European
oysters
(
Ostrea
edulis
)
have
been
decimated
by
overfishing
nowadays
considered
functionally
extinct
in
waters.
To
halt
reverse
the
associated
loss,
oyster
reef
restoration
was
implemented
into
marine
conservation
measures
several
projects
started
across
Europe.
Following
ecological
standards,
it
is
crucial
to
identify
reef-associated
predators
predator-prey
interactions
influencing
recovery
as
can
control
prey
populations.
Therefore,
this
study
examined
consumptive
nonconsumptive
among
common
North
Sea
predators,
brown
crabs
Cancer
pagurus
lobsters
Homarus
gammarus
),
on
Helgoland
island
(German
Bight,
Sea)
for
first
time.
Field
surveys
monitorings
offshore
pilot
experimental
seafloor
areas
showed
(i)
crabs,
co-occur
these
subtidal
environments
(ii)
interact
each
other.
Manipulative
experiments
indicated
(iii,
iv)
both
consume
oysters,
(v)
medium-sized
large
safe
from
(vi)
relatively
lobsters.
They
also
found
(vii)
presence
mussels
Mytilus
spp.),
an
alternative
more
profitable
prey,
(viii)
formation
larger
heavier
clumps,
difficult
handle,
reduce
predation
oysters.
Furthermore,
they
(ix)
crab
conspecifics
(x)
natural
abundances
nonconsumptively
limit
consumption
through
intimidation
mediated
(xi)
crab-
(xii)
lobster-released
waterborne
predator
cues
detected
which
indicates
naturally
underlying
mechanisms
regulating
limiting
Thereby,
provides
fundamental
knowledge
essential
understand
facilitate
restoration.
Frontiers in Marine Science,
Journal Year:
2025,
Volume and Issue:
11
Published: Jan. 22, 2025
Overexploitation
and
degradation
of
water
quality
nearly
depleted
Olympia
oyster
stocks
in
Puget
Sound,
Washington,
USA
by
the
early
1900s.
With
an
intended
goal
creating
self-sustaining
populations
a
target
region
Swinomish
Indian
Tribal
Community
began
reestablishing
oysters
at
two
different
sites,
Kiket
Lone
Tree,
from
2015-2017.
One
our
primary
objectives
was
to
quantify
biological
successes
or
failures
reestablished
populations.
Our
results
provide
guide
for
evolution
project-specific,
evidence-based
restoration
plans
that
could
allow
further
use
adaptive
management
conservation
aquaculture.
Following
creation
experimental
plots
beds
across
sites
using
735
m²
shell
habitat,
including
245
seeded
cultch,
we
measured
temporal
change
length
density
as
proxies
growth,
recruitment,
survival.
Significant
growth
observed
each
year
lagoon.
Despite
known
presence
brooding
competent
larvae
region,
found
no
evidence
recruitment
either
site
through
six
years
monitoring.
Survival
decreased
significantly
site.
Thus,
while
reproduction,
are
not
meeting
success
metrics
survival
therefore
hindering
chances
long-term
success.
We
hypothesize
efforts
hampered
relatively
small
population
size
within
restored
areas,
insufficient
amounts
appropriate
surrounding
lower
residence
time.
study
suggests
managers
need
consistently
monitor
projects
due
site-specific
differences
determine
if
local
failure
is
possibility.
Low
do
necessitate
termination
projects.
However,
these
measurements
suggest
like
ours
consider
expanding
aquaculture
tool
employing
developing
implementing
novel
strategies
increase
naturally-occurring
adult
available
habitat.