Emamectin
benzoate
(EMB)
is
an
efficient
insecticide
which
widely
used
as
anthelmintic
drug
additive
in
aquaculture
fish.
However,
its
extensive
use
has
resulted
widespread
pollution
the
aquatic
environment.
Previous
studies
have
identified
potential
developmental
and
neurotoxic
effects
of
EMB,
however,
systematic
pertaining
to
cardiovascular
toxic
EMB
on
fish
are
scarce.
In
this
study,
zebrafish
embryos
were
exposed
at
concentrations
ranging
from
0.1-8
mg/L
for
3
days,
aiming
investigate
via
examining
morphology,
cardiac
function,
vascular
development
phenotypes.
It
revealed
that
exposure
led
marked
deteriorated
effects,
including
adverse
mortality,
hatching
rate,
general
morphological
traits,
such
malformation,
heart
body
length,
eye
area,
embryos/larvae.
Furthermore,
abnormal
function
development,
triggering
centrophil
migration
aggregation
toward
pericardial
dorsal
regions,
finalized
apoptosis
region,
these
phenomena
further
deciperred
by
transcriptome
analysis
Toll-like
receptor
pathway,
P53
apoptotic
pathway
significantly
affected
exposure.
Moreover,
molecular
docking
rescue
assays
indicated
TLR2
TLR4
might
be
targets
EMB.
Taken
together,
our
study
provides
preliminary
evidence
may
induce
affecting
inflammatory
signaling
pathways
eventually
lead
zebrafish.
dissects
a
novel
theoretical
basis
thereby,
providing
toxicological
human
health
risk
assessment
environmental
ecological
assessment.
Insects,
Journal Year:
2022,
Volume and Issue:
13(9), P. 854 - 854
Published: Sept. 19, 2022
The
European
Spongy
moth,
Lymantria
dispar
(L.)
(Lepidoptera:
Erebidae),
is
an
abundant
species
found
in
oak
woods
Central
and
Southern
Europe,
the
Near
East,
North
Africa
important
economic
pest.
It
a
voracious
eater
can
completely
defoliate
entire
trees;
repeated
severe
defoliation
add
to
other
stresses,
such
as
weather
extremes
or
human
activities.
most
destructive
its
larval
stage
(caterpillars),
stripping
away
foliage
from
broad
variety
of
trees
(>500
species).
Caterpillar
infestation
underestimated
problem;
medical
literature
reports
that
established
populations
caterpillars
may
cause
health
problems
people
animals.
Inflammatory
reactions
occur
individuals
after
exposure
setae,
independent
previous
exposure.
Currently,
chemical
mechanical
methods,
natural
predators,
silvicultural
practices
are
included
for
control
this
species.
Various
insecticides
have
been
used
control,
often
through
aerial
sprayings,
which
negatively
affect
biodiversity,
frequently
fail,
inappropriate
urban/recreational
areas.
However,
bioinsecticides
based
on
various
microorganisms
(e.g.,
entomopathogenic
viruses,
bacteria,
fungi)
well
technologies
mating
disruption
using
sex
pheromone
traps
replaced
management
L.
dispar.
Agriculture,
Journal Year:
2022,
Volume and Issue:
12(7), P. 959 - 959
Published: July 3, 2022
Fall
armyworm
(FAW),
Spodoptera
frugiperda
(Lepidoptera:
Noctuidae),
is
a
highly
invasive
polyphagous
pest
that
causes
great
economic
losses
to
agricultural
production.
Emamectin
benzoate
(EMB)
one
of
the
most
popular
biopesticides
with
high
antipest,
anti-parasitic
and
anti-nematode
activities
low
toxicity.
The
present
study
was
conducted
determine
lethality
EMB
FAW
for
24
h.
Sublethal
effects
on
parental
offspring
generations
were
also
assessed.
LC10,
LC20
LC50
h
third
instar
larvae
0.0127
mg/L,
0.0589
0.1062
respectively.
A
dose
sublethal
concentrations
could
significantly
influence
life
cycle
generations.
concentration
(LC20)
prolonged
pupal
period
male
increased
weight
but
not
female,
delayed
oviposition
longevity
adult
FAW.
In
generation,
mortality
pupae
pre-adults,
reduced
development
time
pre-adult
female.
(LC10
LC20)
decreased
period.
However,
only
LC10
F1
female
fecundity.
No
significant
difference
found
in
intrinsic
rates
natural
increase
(rm),
finite
rate
population
(λ),
net
reproductive
(R0)
exposed
concentrations.
This
first
table
parameters
two
These
findings
can
provide
important
implications
rational
utilization
insecticides.
Forests,
Journal Year:
2022,
Volume and Issue:
13(8), P. 1158 - 1158
Published: July 22, 2022
The
spongy
moth
(formerly
known
as
a
gypsy
moth),
Lymantria
dispar
L.
(Lepidoptera:
Erebidae),
is
polyphagous
pest
that
defoliates
various
species
of
trees
in
the
genera
Populus,
Salix,
Quercus,
Acer
and
Pinus.
Egg
masses
Asian
moths
(Lymantria
asiatica)
were
obtained
from
five
geographically
distinct
locations
China
(Chengdu,
Xifeng,
Heilongjiang,
Kuduer
Longhua
regions)
carried
to
lab
for
incubation
rearing
larvae
up
adult
emergence.
aim
was
see
how
locality,
age
mating
status
influenced
flying
activity
female
moths.
findings
demonstrate
significantly
affects
asiatica
activity,
with
flight
period
distance
decreasing
dramatically
increases.
Locality
also
impacts
ability,
does
not
affect
ability
(p
>
0.05).
maximum
speed
observed
females
Xifeng
(7.19
±
0.34
km/h).
Heilongjiang
recorded
having
average
(2.35
0.08
Females
exhibited
duration
(0.94
0.04
h
1.87
0.18
km).
Morphological
features,
i.e.,
thorax
width
(cm)
wing
loading,
(R2
=
0.93
R2
−0.98).
overall
pattern
Kuder
Chengdu
Longhua,
distance,
it
Chengdu.
This
research
offers
detailed
information
on
dispersion
rate
Spongy
or
newly
introduced
habitat,
which
can
help
us
limit
spread
this
pest.
Toxics,
Journal Year:
2023,
Volume and Issue:
11(12), P. 971 - 971
Published: Nov. 30, 2023
Riptortus
pedestris
(Fabricius,
1775)
(Hemiptera:
Alydidae)
is
a
major
soybean
pest
in
East
Asia
that
can
cause
staygreen
syndrome.
To
date,
no
insecticides
have
been
registered
for
the
control
of
R.
China,
and
these
insects
are
primarily
controlled
field
through
application
broad-spectrum
including
lambda-cyhalothrin
(LCT)
emamectin
benzoate
(EMB).
Here,
lethal
sublethal
effects
LCT
EMB
on
were
comprehensively
evaluated.
both
found
to
exhibit
high
levels
toxicity
concentration-dependent
repellent
pedestris.
The
exposure
third
instar
nymphs
from
F0
generation
LC30
concentrations
resulted
significant
increase
duration
nymph
development
adult
pre-oviposition
period
(APOP),
together
with
reductions
fifth
body
weight,
longevity,
oviposition
days,
fecundity,
vitellarium
length,
lateral
oviduct
diameter,
vitellogenin
(Vg)
gene
expression
as
compared
treatment.
Strikingly,
suppressive
transmitted
F1
generation,
which
similarly
experienced
prolongation
preadult
preoviposition
(TPOP).
Relative
control-treated
populations,
insecticide-treated
groups
also
exhibited
decreases
population
parameter
values.
Overall,
data
offer
new
insight
into
impact
treatment
pedestris,
providing
valuable
foundation
pesticides
context
integrated
management
strategies
aimed
at
crop
preservation.
Journal of Agricultural and Food Chemistry,
Journal Year:
2022,
Volume and Issue:
70(4), P. 1037 - 1046
Published: Jan. 19, 2022
Whether
and
how
insecticide
exposure
will
affect
the
biological
control
efficacy
of
predatory
arthropods
is
critical
in
toxicology
research
but
largely
unexplored.
In
current
study,
reduced
biocontrol
was
observed
a
stink
bug─Eocanthecona
furcellata─after
application
field.
Thus,
we
constructed
comparative
transcriptome
analysis
identified
total
4364
upregulated
1043
down
regulated
differentially
expressed
genes
following
sublethal
λ-cyhalothrin.
The
juvenile
hormone
(JH)
titer
increased
trehalose
content
were
observed.
predation
capacity
theoretical
maximum
predators
decreased
by
31.08
48.90%
response
to
λ-cyhalothrin,
respectively.
Furthermore,
JH
supplementation
after
λ-cyhalothrin
treatment
could
significantly
stimulate
trehalase
detoxification
enzyme
activities,
as
well
restore
ability
E.
furcellata.
Our
results
help
understand
toxicological
mechanism
bug
species
responding
insecticides,
benefit
predators'
ecological
services,
optimize
selection.
