Royal Society of Chemistry eBooks,
Journal Year:
2024,
Volume and Issue:
unknown, P. 162 - 202
Published: Oct. 4, 2024
Over
the
last
decade,
a
range
of
studies
have
demonstrated
that
various
fitness-related
behaviours
are
vulnerable
to
disruption
induced
by
contaminants
emerging
concern
(CECs)
and
legacy
pollutants.
However,
behavioural
responses
animals
when
exposed
pollutants/contaminants
rarely
included
in
discussions
about
regulation
chemicals.
Thus,
improve
our
understanding
opportunities
challenges
for
ecotoxicology,
this
chapter
presents
synthesis
endpoints
experimental
procedures
used
evaluate
response
Nile
tilapia
(Oreochromis
niloticus
–
non-conventional
species
ecotoxicology)
different
CECs
By
focusing
on
methodological
possibilities
be
evaluating
behaviour
Neotropical
species,
we
shed
light
feasibility
reasonableness
using
animal
model
as
complement
or
alternative
use
traditionally
toxicology.
Frontiers in Physiology,
Journal Year:
2022,
Volume and Issue:
13
Published: July 13, 2022
Behaviors
are
the
integrative
outcomes
of
nervous
system,
which
senses
and
responds
to
internal
physiological
status
external
stimuli.
Teleosts
aquatic
organisms
more
easily
affected
by
surrounding
environment
compared
terrestrial
animals.
To
date,
behavioral
tests
have
been
widely
used
assess
potential
environmental
risks
using
fish
as
model
In
this
review,
we
summarized
recent
studies
regarding
effects
stimuli
on
behaviors.
We
concluded
that
behaviors
reflect
changes,
possible
implications
for
assessments.
Environmental Science & Technology,
Journal Year:
2023,
Volume and Issue:
57(26), P. 9580 - 9591
Published: June 23, 2023
The
Longfin
Smelt
(Spirinchus
thaleichthys)
population
in
the
San
Franscisco
Bay/Sacramento-San
Joaquin
Delta
(Bay-Delta)
has
declined
to
∼1%
of
its
pre-1980s
abundance
and,
as
a
result,
is
listed
threatened
under
California
Endangered
Species
Act.
reasons
for
this
decline
are
multiple
and
complex,
including
impacts
contaminants.
Because
spawning
rearing
seasons
coincide
with
rainy
season,
during
which
concentrations
contaminants
increase
due
runoff,
we
hypothesized
that
early
life
stages
may
be
particularly
affected
by
those
Bifenthrin,
pyrethroid
insecticide
commonly
used
agricultural
urban
sectors,
concern.
Concentrations
measured
Bay-Delta
have
been
shown
disrupt
behavior,
development,
endocrine
system
other
fish
species.
objective
present
work
was
assess
impact
bifenthrin
on
developmental
Smelt.
For
this,
embryos
were
exposed
2,
10,
100,
500
ng/L
from
fertilization
hatch,
larvae
100
one
day
before
3
days
post-hatch.
We
assessed
effects
size
at
yolk
sac
volume,
locomotory
upper
thermal
susceptibility
(via
cardiac
endpoints).
Exposure
these
environmentally
relevant
did
not
significantly
affect
function
larval
Smelt;
however,
exposures
altered
their
behavior
resulted
smaller
hatchlings
reduced
volumes.
This
study
shows
affects
fitness-determinant
traits
could
contribute
observed
decline.
Environmental Science and Pollution Research,
Journal Year:
2024,
Volume and Issue:
31(15), P. 22885 - 22899
Published: Feb. 28, 2024
Abstract
The
aim
of
this
study
is
twofold:
i)
to
determine
innovative
yet
sensitive
endpoints
for
sulfoxaflor
and
ii)
develop
best
practices
teaching
in
ecotoxicology.
To
end,
a
group
52
MSc
students
participated
an
environmental
hackathon
,
during
which
they
did
creative
toxicity
testing
on
5
freshwater
invertebrate
species:
Daphnia
magna,
Chironomus
riparius,
Asellus
aquaticus,
Lymnaea
stagnalis,
Anisus
vortex
.
Involving
the
active
learning
environment
stimulated
increased
creativity
productivity.
In
total,
28
were
investigated,
including
standard
(e.g.,
mortality)
as
well
biomechanistic
energy-related
endpoints.
Despite
high
variances
results,
likely
linked
limited
lab
experience
interpersonal
differences,
promising
set
was
selected
further
investigation.
A
more
targeted
follow-up
experiment
focused
most
organism
endpoints:
C.
riparius
larvae.
Larvae
exposed
range
concentrations
(0.90–67.2
μg/L)
21
days.
Video
tracking
showed
that
undulation
swimming
significantly
reduced
at
11.1
μg
sulfoxaflor/L
after
9
days
exposure,
EC
50
=
10.6
μg/L
mean
velocities
larvae
water
phase
found.
Biomechanistic
proved
much
than
mortality,
LC
value
116
found
Day
9.
Our
results
show
performing
with
has
excellent
potential
find
can
subsequently
be
verified
using
professional
experiments.
Furthermore,
utilising
events
increase
students’
enthusiasm
about
ecotoxicology,
driving
better
experiences.
Environmental Science & Technology,
Journal Year:
2022,
Volume and Issue:
56(8), P. 4788 - 4794
Published: Feb. 23, 2022
The
significance
of
neurotoxicological
risks
associated
with
anthropogenic
pollution
is
gaining
increasing
recognition
worldwide.
In
this
regard,
perturbations
in
behavioral
traits
upon
exposure
to
environmentally
relevant
concentrations
neurotoxic
and
neuro-modulating
contaminants
have
been
linked
diminished
ecological
fitness
many
aquatic
species.
Despite
an
interest
testing
ecotoxicology
there
is,
however,
a
notable
gap
understanding
the
neurophysiological
foundations
responsible
for
altered
phenotypes.
One
canonical
approaches
explain
mechanisms
neuro-behavioral
changes
functional
analysis
neuronal
transmission.
animals
it
requires,
invasive,
complex,
time-consuming
electrophysiology
techniques.
perspective,
we
highlight
emerging
prospects
noninvasive,
situ
based
on
multielectrode
arrays
(MEAs).
This
technology
has
only
recently
pioneered
detection
transient
electrical
signals
central
nervous
system
small
model
organisms
such
as
zebrafish.
resembles
electroencephalography
(EEG)
applications
provides
appealing
strategy
mechanistic
explorative
studies
well
routine
neurotoxicity
risk
assessment.
We
outline
prospective
future
existing
challenges
analytical
that
poised
bring
new
vistas
greater
eco-neurotoxicity
thus
more
robust
assessment
protocols.
