Community ecology in a bottle: Leveraging eDNA metabarcoding data to predict occupancy of co‐occurring species
Environmental DNA,
Год журнала:
2024,
Номер
6(3)
Опубликована: Май 1, 2024
Abstract
Detecting
environmental
DNA
(eDNA)
of
numerous
organisms
from
the
same
samples
has
been
revolutionized
by
metabarcoding.
However,
utilizing
vast
amounts
data
generated
metabarcoding
to
predict
occupancy
probabilities
for
co‐occurring
species
is
currently
rare.
Here,
we
demonstrate
how
can
be
used
advance
community
ecology
research
through
a
case
study
using
replicate
stream
water
and
Bayesian
models
test
hypotheses
eDNA
occurrence
native
fish
(brook
trout,
Salvelinus
fontinalis
),
its
major
ectoparasite
(gill
lice,
Salmincola
edwardsii
an
introduced
potential
competitor
(brown
Salmo
trutta
).
Gill
lice
was
positively
associated
with
brook
trout
biomass
determined
via
electrofishing
conducted
near
sampling
sites,
suggesting
gill
dependent
on
host
density.
Leveraging
site‐specific
molecular
operational
taxonomic
units
identified
metabarcoding,
often
predicted
richness
aquatic
insect
orders
commonly
feed
on,
which
are
also
quality
indicators.
Thus,
high‐quality
habitats
that
environmentally
sensitive
salmonids
their
primary
prey
rely
may
promote
higher
rates,
further
facilitating
spread
parasites.
An
increasing
amount
community‐level
being
global
efforts,
suggest
our
framework
could
broadly
implemented
enhance
understanding
factors
impacting
distributions
species,
reveal
new
ecological
phenomena,
support
management
conservation
efforts.
Язык: Английский
The Use of Environmental DNA as Preliminary Description of Invertebrate Diversity in Three Sicilian Lakes
Animals,
Год журнала:
2025,
Номер
15(3), С. 355 - 355
Опубликована: Янв. 26, 2025
Freshwater
ecosystems
are
among
the
most
severely
affected
environments
by
species
loss
caused
climate
change
and
intense
anthropogenic
pressure.
To
preserve
biodiversity,
biomonitoring
plays
a
key
role
providing
reliable
data
on
biological
diversity
ecological
status.
Environmental
DNA
(eDNA)
metabarcoding
has
emerged
as
powerful
non-invasive
alternative
to
traditional
morphology-based
sampling
identification
methods.
This
study
represents
first
application
of
eDNA
analysis
assess
invertebrate
communities
in
three
Sicilian
Lakes:
Poma,
Piana
degli
Albanesi
Scanzano.
Water
samples
were
collected
at
two
points
each
lake
after
filtration
with
nitrocellulose
membranes,
was
extracted
performed.
A
total
27
identified,
belonging
Phyla
Annelida,
Arthropoda
Rotifera.
Notably,
revealed
presence
alien
(Daphnia
parvula
Acanthocyclops
americanus),
dangerous
associated
transmission
viral
diseases
(Culex
pipiens),
potential
new
records
for
Sicily
(Stylaria
lacustris,
Platypalpus
exilis,
Pammene
aurana,
Limnephilus
rhombicus).
These
results
provide
preliminary
snapshot
biodiversity
these
sites,
demonstrating
how
complement,
but
not
replace,
methods,
contributing
assessment
ecosystem
Язык: Английский
Environmental conditions influencing the abundance of the salmonid ectoparasite Salmincola californiensis across upper Willamette River Reservoirs, Oregon
PeerJ,
Год журнала:
2025,
Номер
13, С. e19228 - e19228
Опубликована: Апрель 7, 2025
The
freshwater
copepod
Salmincola
californiensis
is
an
ectoparasite
of
Pacific
salmon
and
trout
(
Oncorhynchus
spp.).
High
levels
infection
by
this
parasite
can
significantly
damage
gills
result
in
blood
loss,
affecting
the
fitness
survival
hosts,
it
may
hinder
recovery
efforts
threatened
endangered
salmonids.
Juvenile
salmonids
that
rear
reservoirs
have
been
reported
to
experience
higher
rates
than
their
stream-dwelling
counterparts.
To
date,
relationship
between
reservoir
environmental
conditions
remains
poorly
understood.
Here,
we
evaluated
sampling
methods
designed
capture
S.
copepodids,
free-swimming
infectious
life
stage
parasitic
copepod,
develop
predictive
models
abundance
.
We
used
light
traps
collect
675
zooplankton
samples
from
various
sites
depths
Cougar,
Lookout
Point,
Fall
Creek
reservoirs,
Oregon,
USA
during
five
months
2020.
tested
several
using
covariates
obtained
concurrently
plankton
surveys
e.g.
,
temperature,
ambient
water
clarity,
profiles,
flow).
Our
showed
a
strong
influence
temperature
on
with
maximum
initial
occurring
at
mean
15.2
°C.
At
August
was
estimated
be
58.6
copepodids
per
site
Cougar
Reservoir,
43.8
3.5
Point
Reservoir.
Water
outflow
both
affected
population
growth
copepodids:
increased
associated
increase
rate
while
decrease
rate.
efficacy
our
method
influenced
percent
moon
fullness,
whether
sample
above
or
below
thermocline,
number
juvenile
sculpin
fishes
Cottus
spp.)
captured
trap.
probability
detecting
single
copepodid
if
one
present
0.042,
but
detection
0.29
under
ideal
trap
set
warmer
water,
location
full
moon.
Biologists
managers
could
use
these
assess
presence
other
locations,
inform
operations
reduce
potential
salmonid
infections.
Язык: Английский
Comparison of qPCR and metabarcoding for environmental DNA surveillance of a freshwater parasite
Ecology and Evolution,
Год журнала:
2024,
Номер
14(5)
Опубликована: Май 1, 2024
Abstract
Analysis
of
environmental
DNA
(eDNA)
has
been
successfully
used
across
freshwater
ecological
parasitology
to
inform
management
ecologically
and
economically
important
species.
However,
most
studies
have
species‐specific
quantitative
polymerase
chain
reaction
(qPCR)
assays
detect
target
taxa.
While
generally
effective,
this
approach
limits
the
amount
community
management‐supporting
data
that
can
be
obtained
from
eDNA
samples.
If
metabarcoding
could
conducted
with
same
accuracy
a
single
species
approach,
researchers
simultaneously
while
obtaining
vast
We
sampled
38
sites
on
Fort
McCoy,
Wisconsin
compared
qPCR
for
detection
ectoparasitic
gill
louse
Salmincola
edwardsii
,
an
obligate
parasite
Salvelinus
fishes
(chars).
found
no
evidence
suggest
S.
occupancy
or
probabilities
differed
between
metabarcoding.
Further,
we
number
reads
were
negatively
predictive
C
T
values
(
value
indicates
cycle
significant
is
detected,
lower
s
indicative
more
DNA),
demonstrating
our
positively
predicted
quantities.
was
not
overall
score
(number
positive
replicates).
In
addition
led
over
2600
invertebrate
underscore
necessity
conducting
similar
analyses
environments
species,
as
ecology
will
vary
per‐study
basis.
Our
results
provides
highly
sensitive
accurate
method
detecting
parasitic
lice
also
illuminating
broader
biological
co‐occurrence
in
environment.
Язык: Английский
Comparison of soil eDNA to camera traps for assessing mammal and bird community composition and site use
Ecology and Evolution,
Год журнала:
2024,
Номер
14(7)
Опубликована: Июль 1, 2024
Species
detections
often
vary
depending
on
the
survey
methods
employed.
Some
species
may
go
undetected
when
using
only
one
approach
in
community-level
inventory
and
monitoring
programs,
which
has
management
conservation
implications.
We
conducted
a
comparative
study
of
terrestrial
mammal
bird
spring
summer
2021
by
placing
camera
traps
at
30
locations
across
large
military
installation
northern
Michigan,
USA
testing
replicate
soil
samples
from
these
sites
for
environmental
DNA
(eDNA)
an
established
vertebrate
metabarcoding
assay.
detected
total
48
taxa
both
methods:
26
mammalian
(excluding
humans,
24
to
two
genus)
22
avian
(21
genus).
relatively
even
distribution
cameras
(17)
via
eDNA
analysis
(15),
with
seven
methods.
Most
medium-to-large
carnivores
were
cameras,
whereas
semi-fossorial
small
mammals
analysis.
higher
diversity
(18
taxa)
compared
(eight
taxa;
four
methods),
but
alone
most
effective
detecting
smaller
birds
that
frequently
occupy
arboreal
environments.
also
used
Bayesian
spatial
occupancy
models
widely
distributed
game
(white-tailed
deer,
Язык: Английский
Fish ectoparasite detection, collection and curation
Advances in Parasitology/Advances in parasitology,
Год журнала:
2024,
Номер
unknown, С. 105 - 157
Опубликована: Янв. 1, 2024
Язык: Английский
Environmental DNA sampling for at-risk and invasive species management on military ranges : guidelines and protocols for installation biologists and land managers
Опубликована: Март 5, 2024
Environmental
DNA
(eDNA)
analysis,
or
the
detection
of
trace
shed
by
organisms
into
their
environment,
has
potential
to
transform
Army
capabilities
for
threatened
and
endangered
species
(TES)
invasive
management
providing
a
rapid,
noninvasive,
cost-effective
option
monitoring
wildlife.
Despite
these
benefits,
eDNA
analysis
is
underutilized
on
military
installations
as
limited
access
guidance
materials,
protocols,
training
opportunities,
support
from
scientists
makes
it
difficult
installation
biologists
land
managers
design
execute
surveys,
let
alone
identify
questions
that
may
benefit
monitoring.
Therefore,
aim
this
resource
increase
awareness
benefits
limitations
provide
study
guidelines
field
sampling
protocols
nonexperts
make
tool
more
accessible
help
facilitate
adoption
eDNA-based
approaches
wildlife
ranges.
Язык: Английский
Trematode Species Detection and Quantification by Environmental DNA-QPCR Assay in Lake Chany, Russia
Journal of Parasitology,
Год журнала:
2024,
Номер
110(3)
Опубликована: Июнь 19, 2024
Environmental
DNA
(eDNA)
surveys
promise
to
be
a
sensitive
and
powerful
tool
for
the
detection
of
trematodes.
This
can
contribute
limited
studies
on
trematode
ecology,
specifically
in
aquatic
ecosystems.
Here,
we
developed
species-specific
primer
probe
sets
Moliniella
anceps,
Opisthioglyphe
ranae,
Plagiorchis
multiglandularis
cercariae
applied
novel
eDNA
qPCR
assay
detect
larval
trematodes
quantitatively.
We
evaluated
effectiveness
assays
using
filtered
lake
water
samples
collected
from
different
sites
Lake
Fadikha
Kargat
River
Estuary
Chany,
Russia,
showing
high
species
specificity
sensitivity
all
3
assays.
Further,
had
efficiencies
ranging
94.9
105.8%.
O.
P.
were
detected
environmental
through
real-time
PCR.
Thus,
anticipate
that
our
approach
will
beneficial
biomonitoring,
measuring,
managing
ecological
systems.
Язык: Английский