Environmental Science & Technology,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 25, 2025
The
western
mosquitofish
(Gambusia
affinis
(G.
affinis))
is
often
the
only
fish
that
survives
in
various
selenium-contaminated
aquatic
environments.
However,
mechanisms
of
its
survival
such
environments
remain
seldom
explored.
In
this
study,
acute
toxicity
selenomethionine
(Se-Met)
a
variety
species
(four
oviparous
and
four
ovoviviparous
species)
was
evaluated,
followed
by
chronic
effects
Se-Met
on
G.
zebrafish
(Danio
rerio
(D.
rerio)),
focusing
Se
accumulation
gonads
offspring,
reproductive
biology,
offspring
development.
Our
results
showed
LC50-96h
largest
among
eight
fish,
confirming
elevated
resistance
to
Se.
Meanwhile,
transcripts
genes
related
selenoproteins
sulfoproteins
opposite
responses
between
D.
exposure,
along
with
altered
levels
total
but
not
fish.
exposures
gonads,
gonadal
development
embryonic
early
larval
development,
efflux
embryos
larvae
were
apparently
different
rerio.
Finally,
differentially
expressed
(particularly
antioxidant
inflammation)
mostly
stimulated
inhibited
This
study
has
demonstrated
capacity
metabolism
physiology
can
help
partially
explain
Se-contaminated
ecosystems.
Environmental Science & Technology,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 25, 2025
The
western
mosquitofish
(Gambusia
affinis
(G.
affinis))
is
often
the
only
fish
that
survives
in
various
selenium-contaminated
aquatic
environments.
However,
mechanisms
of
its
survival
such
environments
remain
seldom
explored.
In
this
study,
acute
toxicity
selenomethionine
(Se-Met)
a
variety
species
(four
oviparous
and
four
ovoviviparous
species)
was
evaluated,
followed
by
chronic
effects
Se-Met
on
G.
zebrafish
(Danio
rerio
(D.
rerio)),
focusing
Se
accumulation
gonads
offspring,
reproductive
biology,
offspring
development.
Our
results
showed
LC50-96h
largest
among
eight
fish,
confirming
elevated
resistance
to
Se.
Meanwhile,
transcripts
genes
related
selenoproteins
sulfoproteins
opposite
responses
between
D.
exposure,
along
with
altered
levels
total
but
not
fish.
exposures
gonads,
gonadal
development
embryonic
early
larval
development,
efflux
embryos
larvae
were
apparently
different
rerio.
Finally,
differentially
expressed
(particularly
antioxidant
inflammation)
mostly
stimulated
inhibited
This
study
has
demonstrated
capacity
metabolism
physiology
can
help
partially
explain
Se-contaminated
ecosystems.