The distribution of the hemlock woolly adelgid (Hemiptera: Adelgidae) in Canada
The Canadian Entomologist,
Год журнала:
2025,
Номер
157
Опубликована: Янв. 1, 2025
Abstract
The
hemlock
woolly
adelgid,
Adelges
tsugae
Annand
(Hemiptera:
Adelgidae),
has
distinct
native
and
invasive
populations
in
Canada.
On
the
country’s
west
coast,
adelgid
is
a
insect
that
feeds
on
western
hemlock,
Tsuga
heterophylla
(Rafinesque-Schmaltz)
Sargent,
mountain
mertensiana
(Bongard)
Carrière
(Pinaceae).
In
eastern
Canada,
an
species
attacks
kills
canadensis
(Linnaeus)
We
obtained
all
Canadian
records
of
A.
institutional
public
databases,
developed
updated
range
maps
phenologies
for
British
Columbia
dispersal
estimates
Nova
Scotia.
Columbia,
’s
observed
distribution
centred
around
Lower
Mainland
Vancouver
Island
but
with
Interior
along
Pacific
coast
have
been
poorly
explored.
invaded
southern
Scotia,
portions
Niagara
region
Ontario
as
far
Hamilton,
at
least
one
site
north
shore
Lake
Ontario.
No
found
New
Brunswick,
Quebec,
or
Prince
Edward
Island,
Finally,
we
estimated
rate
spread
Scotia
12.6
±
8.2
to
20.5
27.21
km/year.
Язык: Английский
Influence of diameter of a sampling device on detectability of wool of the hemlock woolly adelgid (Hemiptera: Adelgidae) in the canopy of eastern hemlock (Pinaceae)
The Canadian Entomologist,
Год журнала:
2025,
Номер
157
Опубликована: Янв. 1, 2025
Abstract
Ball
sampling
is
an
active
technique
of
the
upper
canopy
hemlock,
Tsuga
sp.
(Pinaceae),
to
detect
nonnative
hemlock
woolly
adelgid,
Adelges
tsugae
Annand
(Hemiptera:
Adelgidae).
We
tested
a
7.5-cm-diameter
wooden
ball
fitted
with
Velcro
®
BigShot
slingshot
that
sends
into
canopy.
The
7.5-cm
detected
wool
fewer
attempts
per
tree
and
had
higher
detection
rate
after
10
than
5-cm
using
much
smaller
HyperDog
did.
However,
took
20%
longer
fatigued
shooters
only
30–40
shots
due
size
effort
required
use
larger
slingshot.
A
device
(=
greater
surface
area)
significantly
improved
adelgid
recommended,
provided
more
efficient
launching
system
developed.
Язык: Английский