Balsam Wooly Adelgid

Question 1

Balsam Adelgid damage? What about susceptibility?

Answer 1

Grand fir the highest damage, Amabilis second, subalpine third.

Susceptibility is opposite, due to the elevation range. Adelgid usually introduced by ppl, and has been in Bg for longer.

Question 2

Is it native?

Answer 2

Introduced from Europe

Question 3

How does wooly Adelgid reproduce?***

Answer 3

Parthenogenesis *****

Girls girls girls

Question 4

Char’s of feeding

Answer 4

Very long stylette with two grooves

One for injecting toxins from salivary gland, causing abnormal cell growth and increasing nutrient uptake.

Question 5

Dispersal

Answer 5

L1 crawls up bark toward light where new bark is. (Also AIDS dispersal)

Wingless and sessile

Wind dispersal

Movement of logs and seedlings by humans

Question 6

Reproduction

Answer 6

2-4 generations per year

OW as nymph

Question 7

Signs and Symptims

Answer 7

Gout

White wooly tufts on bark

On Bg, Creates a silhouette with a flat top.

Question 8

Damage

Answer 8

A killer

reduced increment

Deformity and top kill

Loss of B as preferred species

Question 9

3 letter code

Answer 9

IAB

Insect - Aphid/Adelgid - Balsam

Question 10

Management

Answer 10

Predators and insecticides are ineffective

SERIES of treatments required to grow Abies and permit required in quarantine zone.

Established quarantine zone, where live trees cannot moved out of.

Movement of cut trees restricted Jan 31-Nov 1**

Fall and burn in winter/ Debark logs prior to transport

Question 11

FG criteria

Answer 11

No gouting (IAB kills once infection is set in)

Question 12

Balsam wooly Adelgid host and range

Answer 12

True fir host.