Paper · 2003 · The Canadian Entomologist

Aggregation of Agriotes obscurus (Coleoptera: Elateridae) at cereal bait stations in the field

Robert S. Vernon; J. Todd Kabaluk; Anita M. Behringer

5
claims
6
verbatim quotes
17
citations
3
research areas
—
Not open access

Abstract

Abstract Dusky wireworms, Agriotes obscurus (L.), aggregated in similar numbers at wheat [ Triticum aestivum L. (Gramineae) ‘Max’], oat [ Avena sativa L. (Gramineae) ‘Walderen’], barley [ Hordeum vulgare L. (Gramineae) ‘Verdin’], and fall rye [ Secale cereale L. (Gramineae) ‘Wheeler’ and ‘Prima’] cultivar bait stations containing 100 seeds planted 3 cm deep in 127-cm 2 circular bait stations. Similar levels of aggregation also occurred at 11 varieties of wheat planted at 100 seeds/127 cm 2 . When wheat, oat, barley, and the fall rye cultivars were planted at increasing density (0–180 seeds per bait station), aggregation by A. obscurus increased initially, but reached a plateau at numbers and at seeding rates specific to each grain variety as determined using the asymptotic equation y = B 0(1 – e – B 1 x ). Except for barley, this equation predicted wireworm densities within 11% of the densities actually observed at bait stations with 100 seeds/127 cm 2 . It was concluded that any of the wheat, oat, barley, or fall rye varieties would be suitable for monitoring A. obscurus wireworm populations if planted in bait stations at 100 seeds/127 cm 2 , as well as for aggregating wireworms by means of a trap crop.

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Claims 5

Observationobservedoriginal resultmeasured

Claim · model-written summary

Wireworms aggregated in similar numbers at wheat, oat, barley and fall rye bait stations.

Interactor
Agriotes obscurus (L.)Agriotes obscuruse0pest
Outcome
Agriotes obscurus (L.), aggregated in similar numberse0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗
Agriotes obscurus
Agriotes obscurus · InteractorAfroBrazilian · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Dusky wireworms, Agriotes obscurus (L.), aggregated in similar numbers at wheat [ Triticum aestivum L. (Gramineae) ‘Max’], oat [ Avena sativa L. (Gramineae) ‘Walderen’], barley [ Hordeum vulgare L. (Gramineae) ‘Verdin’], and fall rye [ Secale cereale L. (Gramineae) ‘Wheeler’ and ‘Prima’] cultivar bait stations”

✓ located verbatim in the source · abstract, characters 9–320 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Eleven wheat varieties produced similar wireworm aggregation.

Outcome
Similar levels of aggregatione0
Value
11e0

Not reportedInteractor

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Similar levels of aggregation also occurred at 11 varieties of wheat”

✓ located verbatim in the source · abstract, characters 396–464 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

Wireworm aggregation rose with cereal bait seeding density before reaching variety specific plateaus.

Treatment
seeding ratese0
Interactor
A. obscurusAgriotes obscuruse0pest
Outcome
aggregation by A. obscuruse0
Direction
increased initiallye0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗
Agriotes obscurus
Agriotes obscurus · InteractorAfroBrazilian · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“aggregation by A. obscurus increased initially, but reached a plateau at numbers and at seeding rates specific to each grain variety”

✓ located verbatim in the source · abstract, characters 616–748 · show in text ↑
e1

“When wheat, oat, barley, and the fall rye cultivars”

✓ located verbatim in the source · abstract, characters 497–548 · show in text ↑
Method / resourceobservedoriginal resultmeasured

Claim · model-written summary

The equation predicted wireworm densities within 11% of observed densities except for barley.

Outcome
wireworm densitiese0
Value
11%e0
Qualifier
Except for barleye0
Comparator
densities actually observede0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Hordeum vulgare
Hordeum vulgare · TaxonJackyM59 · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Except for barley, this equation predicted wireworm densities within 11% of the densities actually observed at bait stations with 100 seeds/127 cm 2”

✓ located verbatim in the source · abstract, characters 818–966 · show in text ↑
Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

The authors concluded these cereal varieties suit wireworm monitoring and trap crop aggregation.

Interactor
A. obscurusAgriotes obscuruse0pest
Outcome
suitable for monitoring A. obscurus wireworm populationse0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗
Agriotes obscurus
Agriotes obscurus · InteractorAfroBrazilian · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“any of the wheat, oat, barley, or fall rye varieties would be suitable for monitoring A. obscurus wireworm populations if planted in bait stations at 100 seeds/127 cm 2 , as well as for aggregating wireworms by means of a trap crop”

✓ located verbatim in the source · abstract, characters 991–1222 · show in text ↑