Abstract
Abstract Crude extracts of butterfly milkweed, Asclepias tuberosa L., were tested for deterrent properties against the corn wireworm, Melanotus communis Gyll (Coleoptera:Elateridae). When offered milkweed‐treated and control baits, wireworms fed almost exclusively on untreated food. In ‘no‐choice’ tests, there was a significantly lower frequency of damage to treated baits than control baits. Extended exposure of wireworms to the extract did not affect their survival, feeding vigor, or preference in subsequent feeding tests. Seed corn treated with crude extract exhibited slight phytotoxicity in the form of delayed germination and depressed growth rates. RÉSUMÉ Extraits d' Asclepias tuberosa utilisés comme phago‐dissuadants du taupin par Melanotus communis Les propriétés dissuadantes des extraits bruts d' Asclepias tuberosa L. ont été testées contre Melanotus communis Gyll. Quand on a présenté des appâts traités avec A. tuberosa et des appâts témoins, les taupins ont consommé presque exclusivement l'aliment non traité. Dans des expériences sans choix, les appâts traités étaient significativement moins attaqués que les appâts témoins. Une exposition prolongée des taupins à l'extrait n'avait pas modifié leur survie, leur appétit ou leur préférence dans des expériences alimentaires ultérieures. Des graines de maïs traitées avec des extraits bruts ont présenté une légère phytotoxicité sous la forme d'une germination retardée et d'un taux de croissance ralenti.
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Claims 5
Claim · model-written summary
Wireworms fed almost exclusively on untreated bait when offered milkweed extract treated bait.
- Taxon
- corn
Zea mays subsp. mayse2 - Treatment
- milkweed‐treatede0
- Interactor
- Melanotus communis Gylle1pest
- Outcome
- wireworms fede0
- Direction
- almost exclusively on untreated foode0
- Comparator
- control baitse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When offered milkweed‐treated and control baits, wireworms fed almost exclusively on untreated food”
e1“corn wireworm, Melanotus communis Gyll”
e2“Seed corn treated with crude extract”
Claim · model-written summary
Treated bait had significantly less wireworm damage than control bait.
- Taxon
- cornZea mays subsp. mayse2
- Treatment
- treated baitse0
- Interactor
- Melanotus communis Gylle1pest
- Outcome
- frequency of damagee0
- Direction
- lowere0
- Comparator
- control baitse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there was a significantly lower frequency of damage to treated baits than control baits”
e1“corn wireworm, Melanotus communis Gyll”
e2“Seed corn treated with crude extract”
Claim · model-written summary
Extended extract exposure did not affect wireworm survival, feeding vigor or preference.
- Taxon
- cornZea mays subsp. mayse2
- Treatment
- Extended exposure of wireworms to the extracte0
- Interactor
- Melanotus communis Gylle1pest
- Outcome
- wireworms to the extract did not affect their survival, feeding vigor, or preferencee0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Extended exposure of wireworms to the extract did not affect their survival, feeding vigor, or preference in subsequent feeding tests”
e1“corn wireworm, Melanotus communis Gyll”
e2“Seed corn treated with crude extract”
Claim · model-written summary
Crude extract treatment delayed seed corn germination.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- crude extracte0
- Outcome
- germinatione0
- Direction
- delayede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seed corn treated with crude extract exhibited slight phytotoxicity in the form of delayed germination and depressed growth rates”
Claim · model-written summary
Crude extract treatment depressed seed corn growth rates.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- crude extracte0
- Outcome
- growth ratese0
- Direction
- depressede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seed corn treated with crude extract exhibited slight phytotoxicity in the form of delayed germination and depressed growth rates”
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