Efficacy and Persistence of Entomopathogenic Fungi against Rhynchophorus ferrugineus on Date Palm: Host to Host Transmission
Agronomy,
Год журнала:
2024,
Номер
14(4), С. 642 - 642
Опубликована: Март 22, 2024
The
red
palm
weevil
(RPW),
Rhynchophorus
ferrugineus
(Olivier)
(Coleoptera:
Dryophthoridae),
is
a
destructive
and
voracious
pest
of
species
worldwide.
Due
to
environmental
regulatory
concerns,
ecologically
safe
alternatives
synthetic
chemical
insecticides
are
needed
manage
this
cryptic
insect
species.
Entomopathogenic
fungi
have
the
potential
pest.
scope
management
effectiveness
can
be
improved
by
direct
control
or
horizontal
transmission
entomopathogenic
fungal
isolates.
We
tested
in
laboratory
virulence
pathogenicity
fifteen
different
isolates
belonging
following
species:
Beauveria
bassiana,
Metarhizium
anisopliae,
brongniartii
Purpureocillium
lilacinum.
All
were
found
virulent
against
larvae
(14.9
±
1.06
81.5
1.48%
mortality)
adults
(5.6
1.12
51.7
1.51%
at
12
d
post-treatment.
From
screening
bioassay,
five
M.
anisopliae
(WG-08,
WG-09)
B.
bassiana
(WG-23,
WG-24,
WG-25)
for
their
concentration
response
mortality
after
7,
14
21
days
(d)
treatment.
Mortality
was
positively
correlated
with
time.
At
treatment,
WG-23
WG-25
1
×
108
conidia/mL
resulted
100%
while
only
109
caused
adults.
Along
mortality,
all
strong
ovicidal
effects
that
reduced
81.49%
conidia/mL.
bioassay
indicated
infected
transmitted
disease
healthy
individuals.
Horizontal
from
non-infected
not
significant
but
also
had
serious
sublethal
impact
on
development
fitness
including
number
eggs/d
fecundity,
egg
viability
neonate
survival.
Isolate
oviposition
(0.5
eggs/d),
fecundity
(11.7
eggs/female),
(11.6%)
along
larval
survival
25.9%
when
male
mated
normal
female.
In
semi-field
trials,
inside
palms
ultimately
infestations
over
period
two
months.
results
study
indicate
should
further
sustainable
efficient
RPW
date
production
systems.
Язык: Английский
Pathogenicity of Steinernema carpocapsae ALL Entomopathogenic Nematodes and Their Symbiotic Bacteria as a Biological Control Agent on Red Palm Weevil
Microorganisms,
Год журнала:
2025,
Номер
13(5), С. 971 - 971
Опубликована: Апрель 24, 2025
Insect-specific
pathogens
present
a
sustainable
alternative
to
pesticides
for
managing
the
red
palm
weevil
(RPW).
This
study
assessed
efficacy
of
Steinernema
carpocapsae
ALL
nematodes
and
their
symbiotic
bacteria
against
third-instar
larvae
adults
RPW
under
laboratory
conditions.
The
were
isolated,
morphologically
characterized,
genetically
identified.
results
indicated
that
mortality
rates
treated
with
S.
exceeded
50%
in
all
treatments
at
120
h,
reaching
93.33%
concentration
250
IJs/mL.
morphology
isolated
bacterium
from
on
NBTA
medium
exhibited
light
green
color
glossy
surface,
raised
center,
mucilaginous
texture.
A
novel
strain
was
identified
named
as
LZ-G7.
toxicity
showed
notable
rate
66.67%
48
h
after
feeding
10
×
107
CFU/mL.
reached
83.33%
0.30
108
CFU/g
96
injection
into
blood
cavity
8
106
CFU
h.
These
suggest
exhibit
strong
virulence
have
potential
serve
effective
biological
control
agents
integrated
pest
management
strategies.
Язык: Английский
Biological control of the red palm weevil, Rhynchophorus ferrugineus olivier (coleoptera: curculionidae) using indigenous Beauveria bassiana (Bb-045) in coconut palms
M. Sujithra,
V. H. Prathibha,
Madhavan Daliyamol
и другие.
Egyptian Journal of Biological Pest Control,
Год журнала:
2025,
Номер
35(1)
Опубликована: Май 26, 2025
Abstract
Background
India
is
the
world’s
leading
producer
of
coconuts,
with
2.08
million
hectares
under
cultivation,
yielding
a
total
production
22,167
nuts
annually.
However,
various
biotic
and
abiotic
constraints
limit
global
palm
yields.
Among
factors,
coconut
red
weevil,
Rhynchophorus
ferrugineus
Olivier
(Coleoptera:
Curculionidae)
(RPW)
poses
significant
challenge
in
India.
This
pest
attacks
crown
regions,
resulting
death
palm.
Most
developmental
stages
this
weevil
are
concealed
within
trunk,
which
not
only
hinders
early
detection
but
also
facilitates
rapid
reproduction.
The
indiscriminate
use
chemical
insecticides
to
control
these
pests
has
caused
environmental
regulatory
concerns,
highlighting
need
for
ecologically
safe
environmentally
friendly
alternatives.
In
context,
native
entomopathogenic
fungus,
Beauveria
bassiana
(Bb-045)
(Balsamo)
Vuillemin
(Hypocreales:
Cordycipitaceae),
been
isolated
its
efficacy
was
evaluated
against
third
instar
larvae
R.
.
Results
Larval
susceptibility
RPW
varied
significantly
treatment
dose
exposure
period.
indigenous
isolate,
Bb-045,
demonstrated
high
virulence
3
rd
larvae,
causing
up
98%
mortality
at
14
days
after
(DAT)
highest
spore
concentration
tested
(1
×
10
8
conidia/ml).
LC
50
value
determined
be
4.83
4
conidia/ml
DAT,
while
LT
calculated
as
8.51
1
conidia
/
ml
Furthermore,
an
invert
emulsion
formulation
Bb-045
through
trunk
inoculation
studies,
achieving
over
90%
5.2
conidia/ml.
exhibited
mortality,
suggesting
potential
bio-pesticide
management
programs.
Conclusions
Based
on
virulence,
efficacy,
strain
showed
biocontrol
agent
managing
palms,
particularly
humid
tropical
ecosystems.
present
study
identified
effective
field
efficacy.
Thus,
could
integrated
into
programs
cultivation
efficient
biological
agent.
Язык: Английский
Native Entomopathogenic Fungi Isolated from Rhynchophorus palmarum (Linnaeus, 1758) in Northeast Brazil
Insects,
Год журнала:
2024,
Номер
15(3), С. 159 - 159
Опубликована: Фев. 27, 2024
Both
palm
weevils,
the
South
American
(Rhynchophorus
palmarum)
(SAPW)
and
red
weevil
(R.
ferrugineus,
RPW),
are
present
in
America,
affecting
commercial,
ornamental,
native
palms.
These
pests
oviposit
thrive
on
selected
Arecaceae.
R.
palmarum
mainly
infests
coconut
(Cocos
nucifera),
oil
palms
(Elaeis
guineensis),
other
ornamental
causing
a
significant
social
impact
growers.
The
weevils
fulfill
ectosymbiotic
macro-
microorganism
role
first
period
of
larval
development,
worsening
damage
which,
during
this
period,
is
not
yet
apparent.
Palm
protection
Brazilian
context
suggests
use
indigenous
agents
for
microbiological
biocontrol.
This
research
identifies
three
Beauveria
bassiana
isolates:
CVAD01,
CVAD02,
CVAD06.
results
suggest
that
strain’s
can
also
be
compared
with
commercial
strain
bassiana.
Phylogenetic
analysis
allowed
delimitation
species
(Hypocreales).
Pathogenicity
tests
caused
mortality
palmarum.
isolates
CVADO6
showed
high
pathogenicity
between
7
21
days,
rates
90
100%,
suggesting
they
may
effective
biological
control
field
when
used,
within
available
means,
to
mitigate
ferrugineus
America.
Язык: Английский
Entomopathogens: theory and practice
Crop Protection,
Год журнала:
2024,
Номер
184, С. 106813 - 106813
Опубликована: Июнь 18, 2024
Язык: Английский
Secondary metabolites in Cordyceps javanica with insecticidal potential
Pesticide Biochemistry and Physiology,
Год журнала:
2024,
Номер
204, С. 106076 - 106076
Опубликована: Авг. 5, 2024
Язык: Английский
Current Status of Biology–Biotechnic, Agronomic, and Biological Control of Rhynchophorus ferrugineus: A Review
Insects,
Год журнала:
2024,
Номер
15(12), С. 955 - 955
Опубликована: Ноя. 30, 2024
Rhynchophorus
ferrugineus
(Olivier)
(Coleoptera:
Curculionidae),
the
red
palm
weevil
(RPW),
is
a
concealed
voracious
pest
of
different
ornamental
and
economically
important
species,
particularly
date
palm.
It
can
cause
huge
losses
in
commercial
plantations.
RPW
has
spread
rapidly
from
its
original
distribution
Southeast
Asia
to
palm-growing
countries
worldwide.
now
established
more
than
50%
15%
coconut-growing
globally.
To
prevent
further
expansion
this
pest,
many
have
implemented
strict
legislative
quarantine
measures
surrounding
export
palms
plant
genetic
resources
RPW-infested
countries.
This
review
focuses
on
general
biology
(life
history,
development),
host
range,
geographical
distribution,
management
basis
biotechnic
methods,
farming
practices,
natural
enemies,
microbial
control
agents.
Язык: Английский
The efficacy of the Entomopathogenic Fungus, Beauveria bassiana, in Date Palm Protection against the Red Palm Weevil, Rhynchophorus Ferrugineus, Under Hot Dessert Climate
Опубликована: Июль 17, 2024
Abstract
The
Red
Palm
Weevil
(RPW)
is
a
devastating
pest
to
palm
trees.
Commonly
used
insecticides
for
its
control,
can
be
harmful
the
environment
and
humans.
Moreover,
some
populations
of
have
developed
resistance
these
compounds.
Lab
semi-field
data
showed
that
Entomopathogenic
fungi
(EPF)
non-toxic
effective
solution
reducing
infestations.
However,
efficacy
EPF
against
RPW
has
not
been
demonstrated
in
date
palms
on
field
trials
with
their
variables.
This
study
aims
examine
impact
various
climate
conditions
survival
Beauveria
bassiana
(
B.
)
prophylactic
applications
males
females
Date
groves
cultivated
using
different
agricultural
practices.
Healthy
from
“Arava”
region
Israel
were
selected
equipped
“IoTree”
sensors
monitor
infestation.
At
beginning
each
season,
experimental
group
treated
emulsions,
while
control
was
left
untreated.
Soil
samples
gathered
at
end
season
both
quantify
rates
test
regression
treatments
efficacy.
Results
significant
effect
efficacy,
male
female
groves.
Generally,
applied
autumn
higher
summer,
opposite
results
observed.
Analysis
separately,
displayed
superiority
spring
grove,
grove.
Climate
index
significantly
affects
treatment
effectiveness.
soil
tests
revealed
positive
association
between
number
fungus
Colony-Forming
units
(CFUs)
detected
healthy
within
group.
Further
research
needed
investigate
timeframes
explore
diverse
application
schedules
larger
evaluate
RPW.
Язык: Английский
Isolation of Clonostachys rosea and Characterizing Its Entomopathogenic Activity against Dubas Bug (Ommatissus lybicus) Nymphs and Adults
Agriculture,
Год журнала:
2024,
Номер
14(10), С. 1770 - 1770
Опубликована: Окт. 7, 2024
The
Dubas
bug
is
a
serious
and
widespread
pest
of
date
palms
in
several
countries
the
Middle
East.
Chemical
pesticides
are
widely
used
for
managing
this
pest;
however,
most
fail
due
to
continuous
development
pesticide
resistance.
primary
goal
research
was
isolate
endophytic
fungi
test
their
entomopathogenic
activity
against
nymphs
adults.
A
total
27
fungal
isolates
were
obtained
identified
using
nuc
rDNA
internal
transcribed
spacer
(ITS1-5.8S-ITS2
=
ITS)
region.
These
strains
represent
16
species,
belonging
10
genera
seven
different
families,
Ascomycota
with
six
families
Basidiomycota
single
family,
Quambalariaceae.
Due
its
remarkable
biological
control
ability
insect
pests,
Clonostachys
rosea
further
studied
Ommatissus
lybicus
adults
comparison
commercial
strain
Beauveria
bassiana.
concentration
1
×
108
conidia/mL
selected
lab
experiments
targeting
healthy
After
7
days
C.
treatment,
caused
significant
mortality
rates
85%
adult
insects,
while
moderate
(33%).
B.
bassiana
resulted
100%
levels
bug.
Scanning
electron
microscopy
(SEM)
O.
treated
showed
mycelium
growing
on
eye,
antenna,
cuticle,
egg
oviposition
parts
lybicus.
Mycelium
growth
both
also
evident
nymphs.
This
study
reports
first
time
isolation
from
bug,
high
an
population
Язык: Английский