Aquaculture and Fisheries,
Journal Year:
2022,
Volume and Issue:
7(5), P. 562 - 571
Published: March 2, 2022
Among
vertebrates,
teleosts
display
a
wide
array
of
sex
determination
and
differentiation
mechanisms
ranging
from
chromosomal
on
one
end
the
spectrum
to
environmental
other
end.
However,
interplay
both
these
is
also
not
uncommon.
Several
gonochoristic
fishes
exhibit
gonadal
plasticity
often
resulting
in
reversal.
The
major
manipulation
teleost
affected
by
steroids.
In
this
context,
increasing
contamination
aquatic
ecosystems
estrogen-like
compounds,
commonly
known
as
xenoestrogens,
concern.
This
leads
deleterious
effects
reproductive
success
fish
thereby
adversely
impacts
biodiversity.
present
review,
we
have
focused
impact
xenoestrogen
at
different
levels
system
influencing
only
but
their
functions.
review
would
explore
mitigation
strategies
regulations
place
for
management.
ACS ES&T Water,
Journal Year:
2022,
Volume and Issue:
2(2), P. 329 - 338
Published: Jan. 21, 2022
The
concentrations
of
30
pharmaceuticals
and
17
hormones
in
influent,
effluent,
biosolid
samples
were
determined
at
19
representative
Canadian
wastewater
treatment
plants
(WWTPs).
Many
are
excreted
by
humans
conjugated
forms
that
not
detected
analytical
techniques
aimed
free
analytes.
Conjugation
can
be
reversed
naturally
occurring
enzymes
found
WWTPs,
the
collection
system,
and/or
environment.
In
this
study,
we
applied
deconjugating
(β-glucuronidase/sulfatase)
to
an
aliquot
each
sample
order
release
target
analytes
from
their
glucuronate
sulfate
forms.
Of
evaluated,
deconjugation
during
only
influenced
fate
lamotrigine
lagoons
as
well
secondary
advanced
facilities,
but
a
primary
plant.
Several
arrived
WWTPs
part
form,
our
data
indicate
some
mestranol
testosterone
survived
treatments.
Therefore,
may
eventually
become
deconjugated
hence
more
prevalent
natural
This
study
demonstrates
utility
for
screening
impact
conjugation
processes
accurately
quantifying
occurrence
removal
WWTPs.
Lake and Reservoir Management,
Journal Year:
2021,
Volume and Issue:
unknown, P. 1 - 33
Published: Jan. 14, 2021
Molot
LA,
Schiff
SL,
Venkiteswaran
JJ,
Baulch
HM,
Higgins
SN,
Zastepa
A,
Verschoor
MJ,
Walters
D.
2021.
Low
sediment
redox
promotes
cyanobacteria
blooms
across
a
trophic
range:
implications
for
management.
Lake
Reserv
Manage.
37:120–142.
Field
observations
and
experimental
manipulations
with
different
oxidizing
agents
including
nitrate
demonstrate
that
high
prevents
in
eutrophic
freshwaters.
Conversely,
low
caused
by
depletion
of
dissolved
oxygen
allows
to
form.
This
explains
why
bloom
risk
increases
phosphorus
levels:
Higher
productivity
the
spatial
temporal
extent
redox.
The
intermediate
link
between
appears
be
internal
loading
ferrous
iron
(Fe2+)
from
reduced
sediments
diffusion
depths
accessible
migrating
cyanobacteria,
providing
source
their
demand.
Regardless
whether
Fe2+
release
is
link,
concept
"low
as
promoter"
has
major
potential
improve
management
if
managers
consider
impact
nutrient
choices,
targets,
in-lake
methods
on
Phosphorus
input
targets
can
adjusted
climate
change
alters
anoxia,
short-term
prediction
models
incorporate
could
predict
onset
earlier
than
current
depend
detection
photosynthetic
pigments
associated
blooms.
River Research and Applications,
Journal Year:
2017,
Volume and Issue:
33(7), P. 1016 - 1025
Published: May 10, 2017
Abstract
Small‐bodied
fish
species
are
commonly
used
for
the
assessment
of
environmental
effects
because
they
short
lived,
abundant,
and
mature
early.
Although
generally
considered
to
be
less
mobile
than
larger
bodied
species,
relatively
little
is
known
about
their
movement
patterns.
In
this
study,
we
tagged
3,001
rainbow
darters
(
Etheostoma
caeruleum
)
(≤76
mm)
in
upper
Grand
River
southern
Ontario
with
visible
implant
alpha
tags
elastomers
3
riffles.
Five
hundred
sixty‐five
were
recaptured
over
4
recapture
events
(including
spawning
nonspawning
periods)
a
spatial
extent
1900
m.
The
darter
demonstrated
high
site
fidelity
having
median
5
m
85%
staying
within
riffle
which
originally
tagged.
Most
movements
occurred
during
period,
where
males
moved
at
greater
frequency
had
tendency
move
longer
distances
(up
975
m).
There
was
also
bias
direction
movement,
dependent
on
season.
Overall,
makes
it
candidate,
sentinel
effects.
