Paper · 1971 · The Canadian Entomologist

ASSOCIATION OF SCOLYTUS VENTRALIS (COLEOPTERA: SCOLYTIDAE) AND PHORADENDRON BOLLEANUM SUBSPECIES PAUCIFLORUM ON ABIES CONCOLOR

L. S. Felix; B. Uhrenholdt; J. R. Parmeter

7
claims
12
verbatim quotes
10
citations
1
research areas
—
Not open access

Abstract

Abstract Attacks by Scolytus ventralis on white fir were correlated both with periods of low precipitation and with medium to heavy infestations of true mistletoe. Trees were seldom attacked when the "running mean precipitation" was above 54 in. Attacks were significantly more frequent and were often a year or more earlier on trees with substantial amounts of mistletoe. Broods were seldom produced, however.Data suggest that heavy mistletoe infestation rendered trees more susceptible to beetle infestation, possibly by creating moisture stress in infected trees.

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Claims 7

Associationobservedoriginal resultmeasured

Claim · model-written summary

Attacks by Scolytus ventralis on white fir were correlated with periods of low precipitation.

Taxon
white fire1
Interactor
Scolytus ventralisScolytus ventralise1pest
Outcome
Attackse1
Setting
periods of low precipitatione1

Not reportedDirection

Verbatim

e1

“Attacks by Scolytus ventralis on white fir were correlated both with periods of low precipitation and with medium to heavy infestations of true mistletoe”

✓ located verbatim in the source · abstract, characters 9–162 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

Attacks by Scolytus ventralis on white fir were correlated with medium to heavy infestations of true mistletoe.

Taxon
white fire1
Treatment
medium to heavy infestations of true mistletoee1
Interactor
Scolytus ventralisScolytus ventralise1pest
Second interactor
true mistletoee1parasite
Outcome
Attackse1

Not reportedDirection

Verbatim

e1

“Attacks by Scolytus ventralis on white fir were correlated both with periods of low precipitation and with medium to heavy infestations of true mistletoe”

✓ located verbatim in the source · abstract, characters 9–162 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

Trees were seldom attacked when the running mean precipitation was above 54 in.

Taxon
white fire1
Treatment
running mean precipitatione2
Interactor
Scolytus ventralisScolytus ventralise1pest
Outcome
attackede2
Direction
seldome2
Value
54 in.e2

Verbatim

e1

“Attacks by Scolytus ventralis on white fir were correlated both with periods of low precipitation and with medium to heavy infestations of true mistletoe”

✓ located verbatim in the source · abstract, characters 9–162 · show in text ↑
e2

“Trees were seldom attacked when the "running mean precipitation" was above 54 in.”

✓ located verbatim in the source · abstract, characters 164–245 · show in text ↑
Associationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Attacks by Scolytus ventralis were significantly more frequent on trees with substantial amounts of mistletoe.

Taxon
white fire1
Treatment
substantial amounts of mistletoee4
Interactor
Scolytus ventralisScolytus ventralise1pest
Second interactor
mistletoee4parasite
Outcome
Attackse4
Direction
more frequente4

Verbatim

e1

“Attacks by Scolytus ventralis on white fir were correlated both with periods of low precipitation and with medium to heavy infestations of true mistletoe”

✓ located verbatim in the source · abstract, characters 9–162 · show in text ↑
e4

“Attacks were significantly more frequent and were often a year or more earlier on trees with substantial amounts of mistletoe”

✓ located verbatim in the source · abstract, characters 246–371 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

Attacks by Scolytus ventralis were often a year or more earlier on trees with substantial amounts of mistletoe.

Taxon
white fire1
Treatment
substantial amounts of mistletoee4
Interactor
Scolytus ventralisScolytus ventralise1pest
Second interactor
mistletoee4parasite
Outcome
Attackse4
Direction
earliere4
Value
a year or moree4

Verbatim

e1

“Attacks by Scolytus ventralis on white fir were correlated both with periods of low precipitation and with medium to heavy infestations of true mistletoe”

✓ located verbatim in the source · abstract, characters 9–162 · show in text ↑
e4

“Attacks were significantly more frequent and were often a year or more earlier on trees with substantial amounts of mistletoe”

✓ located verbatim in the source · abstract, characters 246–371 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Broods of Scolytus ventralis were seldom produced on white fir.

Taxon
white fire1
Interactor
Scolytus ventralisScolytus ventralise1pest
Outcome
Broodse5
Qualifier
seldom producede5

Not reportedDirection

Verbatim

e1

“Attacks by Scolytus ventralis on white fir were correlated both with periods of low precipitation and with medium to heavy infestations of true mistletoe”

✓ located verbatim in the source · abstract, characters 9–162 · show in text ↑
e5

“Broods were seldom produced, however”

✓ located verbatim in the source · abstract, characters 373–409 · show in text ↑
Mechanismhypothesisoriginal resultmeasured

Claim · model-written summary

Heavy mistletoe infestation is suggested to make white fir trees more susceptible to beetle infestation, possibly through moisture stress.

Taxon
white fire1
Treatment
heavy mistletoe infestatione6
Outcome
more susceptible to beetle infestatione6
Qualifier
possibly by creating moisture stress in infected treese6

Verbatim

e1

“Attacks by Scolytus ventralis on white fir were correlated both with periods of low precipitation and with medium to heavy infestations of true mistletoe”

✓ located verbatim in the source · abstract, characters 9–162 · show in text ↑
e6

“Data suggest that heavy mistletoe infestation rendered trees more susceptible to beetle infestation, possibly by creating moisture stress in infected trees”

✓ located verbatim in the source · abstract, characters 410–565 · show in text ↑