Metal
contamination
of
aquatic
environments
remains
a
major
concern
due
to
their
persistence.
The
water
flea
Daphnia
magna
is
an
important
model
species
for
metal
toxicity
studies
and
quality
assessment.
However,
most
research
has
focused
on
physiological
endpoints
such
as
mortality,
growth,
reproduction
in
laboratory
settings,
well
neglected
toxicogenomic
responses.
Copper
(Cu)
zinc
(Zn)
are
essential
trace
elements
that
play
crucial
roles
many
biological
processes,
including
iron
metabolism,
connective
tissue
formation,
neurotransmitter
synthesis,
DNA
immune
function.
Excess
amounts
these
metals
result
deviations
from
homeostasis
may
induce
toxic
In
this
study,
we
analyzed
transcriptomic
responses
IC
Water,
Год журнала:
2024,
Номер
16(20), С. 2994 - 2994
Опубликована: Окт. 20, 2024
The
bioaccumulation
of
trace
elements
and
heavy
metals
in
aquatic
organisms
is
a
critical
environmental
concern
due
to
its
potential
impact
on
ecosystem
health
human
safety.
This
study
investigated
the
level
Labeo
rohita
Mystus
seenghala
from
River
Jhelum
district
Khushab,
Punjab,
Pakistan.
concentration
calcium,
magnesium,
iron,
nickel,
copper,
arsenic,
cadmium,
zinc,
chromium,
manganese,
cobalt,
lead
gills,
liver,
muscle
tissues
these
fish
was
measured
using
inductively
coupled
plasma-mass
spectrometry.
Then,
extent
contamination
possible
risks
were
assayed.
Our
findings
indicate
significant
variations
elemental
metal
concentrations
among
different
organs
between
species,
reflecting
their
diverse
feeding
habits
habitats.
risk
assessment
based
estimated
daily
intake,
weekly
maximum
permissible
target
hazard
quotient,
index
or
total
index,
cancer
revealed
consumers
fish.
emphasizes
need
for
continuous
monitoring,
as
new
data
insights
are
crucial
understanding
mitigating
risks.
Strict
regulatory
measures
also
necessary
safeguard
public
preserve
River.
Environmental Science & Technology Letters,
Год журнала:
2024,
Номер
11(5), С. 384 - 393
Опубликована: Апрель 15, 2024
The
purpose
of
this
Global
Perspective
is
to
discuss
the
ecological
impacts
desalination
intakes
in
coastal
ecosystems
and
highlight
current
global
policies
trends.
Suggestions
are
provided
based
on
regulatory
needs
knowledge
gaps
required
better
evaluate
risks
such
facilities.
Desalination
has
emerged
as
an
increasingly
popular
response
intensifying
water
demands
shortages
recent
decades.
As
2019,
number
operational
facilities
was
estimated
at
nearly
16,000,
with
48%
located
Middle
East
North
Africa.
Current
trends
indicate
that
new
planned
overwhelmingly
membrane-based
facilities,
specifically
seawater
reverse
osmosis
(SWRO)
Large-scale
SWRO
draw
millions
gallons
each
day
from
source
waters,
potentially
leading
impingement,
entrapment,
entrainment
massive
numbers
aquatic
organisms,
potential
implications
for
community
structure
function
via
multiple
indirect
mechanisms.
Despite
these
devastating
environmental
impacts,
there
remains
a
paucity
enforceable
regulations
pertaining
intake
siting,
design,
operation
large
worldwide.
Scientific Reports,
Год журнала:
2025,
Номер
15(1)
Опубликована: Янв. 7, 2025
Multi-species
tests
in
bioassays
offer
a
holistic
view
of
the
ecosystem's
response
to
toxicity,
as
different
species
display
varying
sensitivities
pollutants.
This
research
aimed
assess
ability
toxicity
tests'
distinguish
contamination
levels,
examine
site-specific
effects,
and
investigate
seasonal
variability.
Using
multispecies
approach
(Nannochloropsis
oceanica,
Artemia
franciscana,
Arbacia
nigra),
evaluated
marine
water
quality
from
Callao
Bay
Peru
across
four
sampling
areas
(Naval
School:
PA1,
Peruvian
Marine
Institute:
PA2,
Pier:
PA3,
San
Lorenzo
Island:
PA4).
These
species,
with
sizes
morphologies,
are
relevant
systems
ideal
for
testing,
contributing
broader
environmental
impact
discussions.
To
conduct
bioassays,
evaluations
were
performed
fall,
winter,
spring,
summer.
Brine
shrimp
displayed
variations
values,
notable
mortality
rates
during
winter.
Nannochloropsis
oceanica
was
most
sensitive
showing
moderate
seasons.
Areas
impacted
by
pollution
sources,
such
wastewater
maritime
traffic,
exhibited
highest
levels
(PA3
fluctuations
underscore
need
consider
local
conditions
when
assessing
organism
sensitivity
seawater
contaminants.
Additionally,
they
reveal
complex
interplay
between
factors,
quality,
responses
ecosystems.
Foods,
Год журнала:
2025,
Номер
14(2), С. 324 - 324
Опубликована: Янв. 20, 2025
This
study
investigates
the
seasonal
variations
in
elemental
composition
of
five
economically
valuable
Sparidae
fish
species
from
Bozcaada,
North
Aegean:
red
seabream
(Pagrus
major),
gilthead
(Sparus
aurata),
saddled
(Oblada
melanura),
white
(Diplodus
sargus),
and
common
dentex
(Dentex
dentex),
with
a
focus
on
both
essential
minerals
toxic
metals.
Fish
samples
(n
=
10
per
season)
were
collected
across
four
seasons,
their
weights
lengths
recorded.
The
concentrations
elements
such
as
calcium,
potassium,
magnesium,
phosphorus,
copper,
iron,
manganese,
zinc,
chromium,
nickel,
selenium,
cadmium,
mercury
analyzed
using
Inductively
Coupled
Plasma
Mass
Spectrometry
(ICP-MS).
varied
follows:
Ca
(11,388.46–55,470.76),
K
(17,230.83–27,594.86),
Mg
(1436.02–2326.73),
Na
(1962.30–7847.41),
P
(13,112.11–15,516.57),
Fe
(107.61–282.00),
Cu
(36.44–59.13),
Mn
(6.19–19.87),
Zn
(98.67–256.26),
Cr
(4.54–11.96),
Ni
(6.33–13.89),
Se
(0.82–7.33),
Cd
(0.08–0.32),
Hg
(0.08–1.50)
mg/kg.
Health
risk
assessments,
including
Estimated
Weekly
Intake
(EWI),
Target
Hazard
Quotient
(THQ),
Cancer
Risk
(CR),
calculated
for
adult
child
consumers.
results
showed
that
while
remained
within
safe
limits,
metals
could
pose
potential
health
risks,
particularly
frequent
consumption.
research
provides
insights
into
balancing
nutritional
benefits
safety
offering
recommendations
informed
consumption
public
policies
aimed
at
optimizing
minimizing
risks.
