Abstract
The effect of 2-tridecanone vapor on the cowpea weevil (Callosobruchus maculatus) development was determined. Seeds of cowpea were infested with adults and exposed to different doses of 2-tridecanone isolated from Pilocarpus microphyllus Stapf ex Holm, a plant species native from northeastern Brazil. The pure monoterpene was evaluated both undiluted as well as in the dilutions 1:10, 1:100 and 1:1,000 (v/v). The following parameters of the cowpea weevil life cycle were analyzed in response to decreasing doses of 2-tridecanone: number of eggs laid, percentage of egg hatching on seeds, percentage of adult emergence, adult weight at emergence, mean developmental time and number of adults emerged. Vapor of 2-tridecanone caused a significant (P < 0.05) reduction in the number of eggs laid, in the percentage of eggs hatched and in the number of emerged adults in infested seeds. The fumigant insecticidal effect of 2-tridecanone was mainly due to its ovicidal activity.
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Claims 4
Claim · model-written summary
2-tridecanone vapor significantly reduced cowpea weevil egg laying on infested cowpea seeds.
- Taxon
- cowpea
Vigna unguiculatae1 - Treatment
- Vapor of 2-tridecanonee0
- Interactor
- cowpea weevil Callosobruchus maculatus
Callosobruchus maculatust0pest - Outcome
- number of eggs laide0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Vapor of 2-tridecanone caused a significant (P < 0.05) reduction in the number of eggs laid, in the percentage of eggs hatched and in the number of emerged adults in infested seeds”
e1“Seeds of cowpea were infested with adults”
t0“cowpea weevil Callosobruchus maculatus”
Claim · model-written summary
2-tridecanone vapor significantly reduced cowpea weevil egg hatching on seeds.
- Taxon
- cowpeaVigna unguiculatae1
- Treatment
- Vapor of 2-tridecanonee0
- Interactor
- cowpea weevil Callosobruchus maculatusCallosobruchus maculatust0pest
- Outcome
- percentage of eggs hatchede0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Vapor of 2-tridecanone caused a significant (P < 0.05) reduction in the number of eggs laid, in the percentage of eggs hatched and in the number of emerged adults in infested seeds”
e1“Seeds of cowpea were infested with adults”
t0“cowpea weevil Callosobruchus maculatus”
Claim · model-written summary
2-tridecanone vapor significantly reduced emerged cowpea weevil adults on seeds.
- Taxon
- cowpeaVigna unguiculatae1
- Treatment
- Vapor of 2-tridecanonee0
- Interactor
- cowpea weevil Callosobruchus maculatusCallosobruchus maculatust0pest
- Outcome
- number of emerged adultse0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Vapor of 2-tridecanone caused a significant (P < 0.05) reduction in the number of eggs laid, in the percentage of eggs hatched and in the number of emerged adults in infested seeds”
e1“Seeds of cowpea were infested with adults”
t0“cowpea weevil Callosobruchus maculatus”
Claim · model-written summary
The authors attribute fumigant insecticidal activity mainly to ovicidal activity.
- Taxon
- cowpeaVigna unguiculatae1
- Interactor
- cowpea weevil Callosobruchus maculatusCallosobruchus maculatust0pest
- Outcome
- fumigant insecticidal effecte0
- Qualifier
- ovicidal activitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The fumigant insecticidal effect of 2-tridecanone was mainly due to its ovicidal activity”
e1“Seeds of cowpea were infested with adults”
t0“cowpea weevil Callosobruchus maculatus”