Abstract
The Colorado potato beetle, Leptinotarsa decemlineata (Say), is one of the most destructive pest species to have developed resistance to most chemical insecticides. We determined the composition and evaluated the potential of Tanacetum parthenium L. and Tanacetum vulgare L. (Asteraceae family) essential oil (EO) application as an alternative eco-friendly control strategy against L. decemlineata. We assessed the antifeedant activity for L. decemlineata larvae and adults by estimating the damage to potato leaves treated with three concentrations of EOs dissolved in ethanol (0.125, 0.25 and 0.5%). Results showed that T. parthenium EO was more effective against larvae, and T. vulgare was more effective against adults. In an olfactometer assay, the time required to choose an untreated leaf disc did not depend on the Tanacetum species, or life stage examined. However, the concentration of EO exhibited a significant effect on the behaviour of both developmental stages. At higher EO concentrations, both third instar larvae and adults require less time to choose an untreated leaf disc. Additionally, T. parthenium EO provoked more rapid movement away from the treated leaf disc than T. vulgare, especially at the highest concentration. Successful modification of L. decemlineata behaviour by the two Tanacetum oils suggests that they possess the potential for use in potato protection.
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Claims 7
Claim · model-written summary
T. parthenium oil was more effective against beetle larvae.
- Taxon
- potato
Solanum tuberosume1 - Treatment
- T. parthenium EOe0
- Interactor
- L. decemlineata
Leptinotarsa decemlineatae3pest - Outcome
- more effective against larvaee0
- Direction
- more effectivee0
- Comparator
- T. vulgaree2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“T. parthenium EO was more effective against larvae”
e1“potato leaves”
e2“T. vulgare was more effective against adults”
e3“strategy against L. decemlineata”
Claim · model-written summary
T. vulgare oil was more effective against adults.
- Taxon
- potatoSolanum tuberosume1
- Treatment
- T. vulgaree0
- Interactor
- L. decemlineataLeptinotarsa decemlineatae3pest
- Outcome
- more effective against adultse0
- Direction
- more effectivee0
- Comparator
- T. parthenium EOe2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“T. vulgare was more effective against adults”
e1“potato leaves”
e2“T. parthenium EO was more effective against larvae”
e3“strategy against L. decemlineata”
Claim · model-written summary
Choice time did not depend on Tanacetum species or beetle stage.
- Taxon
- potatoSolanum tuberosume1
- Treatment
- Tanacetum speciese0
- Interactor
- L. decemlineataLeptinotarsa decemlineatae2pest
- Outcome
- time required to choose an untreated leaf disce0
- Direction
- did not depende0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the time required to choose an untreated leaf disc did not depend on the Tanacetum species, or life stage examined”
e1“potato leaves”
e2“strategy against L. decemlineata”
Claim · model-written summary
Oil concentration significantly affected both beetle stages.
- Taxon
- potatoSolanum tuberosume1
- Treatment
- concentration of EOe0
- Interactor
- L. decemlineataLeptinotarsa decemlineatae2pest
- Outcome
- behaviour of both developmental stagese0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the concentration of EO exhibited a significant effect on the behaviour of both developmental stages”
e1“potato leaves”
e2“strategy against L. decemlineata”
Claim · model-written summary
Higher oil concentrations shortened larval and adult choice time.
- Taxon
- potatoSolanum tuberosume1
- Treatment
- higher EO concentrationse0
- Interactor
- L. decemlineataLeptinotarsa decemlineatae2pest
- Outcome
- time to choose an untreated leaf disce0
- Direction
- lesse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At higher EO concentrations, both third instar larvae and adults require less time to choose an untreated leaf disc”
e1“potato leaves”
e2“strategy against L. decemlineata”
Claim · model-written summary
T. parthenium caused faster movement away than T. vulgare.
- Taxon
- potatoSolanum tuberosume1
- Treatment
- T. parthenium EOe0
- Interactor
- L. decemlineataLeptinotarsa decemlineatae2pest
- Outcome
- movement away from the treated leaf disce0
- Direction
- more rapide0
- Qualifier
- highest concentratione0
- Comparator
- T. vulgaree0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“T. parthenium EO provoked more rapid movement away from the treated leaf disc than T. vulgare, especially at the highest concentration”
e1“potato leaves”
e2“strategy against L. decemlineata”
Claim · model-written summary
Both Tanacetum oils may be useful for potato protection.
- Taxon
- potatoSolanum tuberosume0
- Outcome
- potential for use in potato protectione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the two Tanacetum oils suggests that they possess the potential for use in potato protection”
The same questions in other papers
Tanacetum parthenium · Leptinotarsa decemlineata · Solanum tuberosum (potato)Positive and negative results
2 in the opposite direction
- no effect
- no effect
botanical · Leptinotarsa decemlineata · Solanum tuberosum (potato)Positive and negative results
14 papers in the same direction as this paper · 5 in the opposite direction
- positive
- positive
- positive
16 papers more in this group
See all 20 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.