Characterization of microplastics found in mosquito oviposition habitats
Journal of Vector Ecology,
Год журнала:
2024,
Номер
50(1)
Опубликована: Дек. 9, 2024
This
study
examined
the
presence
and
characteristics
of
microplastics
(MPs)
in
water
collected
from
potential
mosquito
oviposition
habitats
Lubbock,
TX.
Water
samples
ranging
10
to
1000
mL
were
36
suspected
artificial
natural
habitats,
sites
categorized
as
containers,
tires,
or
sites.
Samples
filtered
through
a
series
stainless-steel
sieves
isopore
membrane
filters,
MPs
imaged
counted
using
stereo
microscope.
classified
by
shape
into
fragments,
fibers,
films,
spheres,
foams.
Scanning
Electron
Microscopy
(SEM),
differential
scanning
calorimetry
(DSC),
thermogravimetric
analysis
(TGA)were
employed
characterize
size,
morphology,
polymer
type
subset
habitats.
Results
suggest
are
commonly
found
containers
at
higher
concentrations
than
Furthermore,
all
predominantly
fragments
fibers.
SEM
revealed
diverse
morphologies
indicated
microbial
colonization
on
MP
surfaces.
Ultimately,
this
provides
insights
distribution
highlighting
impact
pollution
effects
biology,
serves
foundation
for
further
research
ecological
implications
Язык: Английский
Insecticide tolerance of the malaria vector Anopheles gambiae following larval exposure to microplastics and insecticide
PLoS ONE,
Год журнала:
2024,
Номер
19(12), С. e0315042 - e0315042
Опубликована: Дек. 12, 2024
Microplastic
(MP)
pollution
poses
a
global
threat
to
urban
and
rural
environments
can
have
negative
effects
on
range
of
organisms.
Mosquito
larvae
often
breed
in
water
contaminated
with
MPs,
given
their
important
role
as
disease
vectors,
understanding
the
larval
exposure
MPs
is
critical
for
potential
impact
life
history
traits
subsequent
methods
control.
Here,
we
exposed
first
instar
Anopheles
gambiae
s.s.
environmentally
realistic
concentrations
PET
microplastics
(1.0–7.5
μm)
sub-lethal
dose
insecticide
mixed
microplastics,
quantified
survival,
development,
susceptibility
over
six
generations.
Adult
mosquitoes
from
these
treatments
were
subsequently
tested
resistance.
Exposure
decreased
survival
rates
compared
control;
however,
generations
exposure,
significantly
increased.
Similarly,
there
was
higher
rate
those
just
insecticide,
increased
further
For
adult
mosquito
tests,
knockdown
times
(KDTs)
indicated
some
level
tolerance
when
had
been
previously
insecticides.
This
study
demonstrating
selection
after
consecutive
exposures
varying
MPs.
Therefore,
field-scale
studies
are
now
urgently
required
quantify
whether
insecticides
less
effective
at
controlling
breeding
sites
commonly
polluted
Язык: Английский