Research Square (Research Square),
Journal Year:
2023,
Volume and Issue:
unknown
Published: Nov. 7, 2023
Abstract
Microplastics
represent
a
pervasive
contaminant
in
aquatic
ecosystems,
posing
substantial
risks
to
biota.
This
study
sought
elucidate
the
toxicological
impacts
of
three
prevalent
plastic
polymers
high-density
polyethylene
(HDPE),
low-density
(LDPE),
and
polypropylene
(PP)
both
mono
co-exposure
scenarios
on
Daphnia.
Employing
range
endpoints,
investigation
assessed
Daphnia
magna's
ingestion,
bioaccumulation,
population
density,
swimming
behavior,
reproduction
rate
response
microplastics
measuring
0–32
µm,
which
were
synthesized
laboratory
using
virgin
polymer
beads
.
The
findings
revealed
that
synergistic
effects
medium
pose
greater
hazard
organism
than
mono-exposure
individual
(PP,
LDPE,
HDPE).
In
scenerio,
LC50
value
decreased
77
mg/L,
compared
120,
123,
109
mg/L
for
PP,
HDPE,
respectively.
magna
exhibited
more
pronounced
co-exposure,
characterized
by
reduced
survival
rates,
increased
microplastic
rates
densities.
Furthermore,
led
erratic
movements
relative
mono-exposure,
with
immobility
energy
deficiency
observed
across
all
exposure
types,
albeit
magnitude
settings.
Marine Pollution Bulletin,
Journal Year:
2024,
Volume and Issue:
206, P. 116742 - 116742
Published: July 26, 2024
Macroalgae
are
able
to
retain
environmental
microplastics
(MPs).
The
potential
ingestion
of
MP
through
Atlantic
agar
Gelidium
corneum
and
different
animal
species
(hake,
glass
eels,
mussels,
topshells,
anemones,
sea
cucumbers)
that
seafood
resources
in
Spain,
was
estimated
from
published
MPs
data
calculating
daily
dose
annual
rate.
study
region
Asturias
(SW
Bay
Biscay).
Lower
rate
algae
than
any
analysed
revealed
a
reduced
risk
intake,
probably
because
the
alga
is
harvested
quite
clean
subtidal
zones.
However,
bioconcentration
higher
cucumbers,
mussels
or
eels.
Compared
with
other
algae,
G.
ranked
highest
for
retention
rate,
perhaps
its
intricate
branching
gelatinous
surface,
suggesting
possible
use
bioremediation.
More
experimental
studies
uptake
by
macroalgae
recommended
understand
their
implication
accumulation
this
pollutant.
Journal of Hazardous Materials,
Journal Year:
2024,
Volume and Issue:
480, P. 136457 - 136457
Published: Nov. 9, 2024
Recent
studies
confirm
that
nanoplastics
(NP)
cause
severe
microbial
imbalances
in
various
ecosystems,
significantly
affecting
diversity
and
abundance.
Hydroponic
systems
vital
for
lettuce
production
are
increasingly
threatened
by
NP
contamination
irrigation
water
this
issue
is
gaining
global
attention.
This
study
investigates
species
hydroponic
altered
exposure
their
impact
on
growth.
While
(10
Research Square (Research Square),
Journal Year:
2023,
Volume and Issue:
unknown
Published: Nov. 7, 2023
Abstract
Microplastics
represent
a
pervasive
contaminant
in
aquatic
ecosystems,
posing
substantial
risks
to
biota.
This
study
sought
elucidate
the
toxicological
impacts
of
three
prevalent
plastic
polymers
high-density
polyethylene
(HDPE),
low-density
(LDPE),
and
polypropylene
(PP)
both
mono
co-exposure
scenarios
on
Daphnia.
Employing
range
endpoints,
investigation
assessed
Daphnia
magna's
ingestion,
bioaccumulation,
population
density,
swimming
behavior,
reproduction
rate
response
microplastics
measuring
0–32
µm,
which
were
synthesized
laboratory
using
virgin
polymer
beads
.
The
findings
revealed
that
synergistic
effects
medium
pose
greater
hazard
organism
than
mono-exposure
individual
(PP,
LDPE,
HDPE).
In
scenerio,
LC50
value
decreased
77
mg/L,
compared
120,
123,
109
mg/L
for
PP,
HDPE,
respectively.
magna
exhibited
more
pronounced
co-exposure,
characterized
by
reduced
survival
rates,
increased
microplastic
rates
densities.
Furthermore,
led
erratic
movements
relative
mono-exposure,
with
immobility
energy
deficiency
observed
across
all
exposure
types,
albeit
magnitude
settings.
