Abstract
BACKGROUND: The tomato potato psyllid, Bactericera cockerelli (Šulc) is a new invasive pest in Western Australia, which may disperse across the whole of Australia within a few years and cause significant economic losses. Chemical control is the most widely used approach to manage B. cockerelli, but insect resistance, chemical residue and effects on non-target species have become an increasing concerned. Therefore, in this study, the biocontrol potential of variegated lady beetle, Hippodamia variegata (Goeze) was investigated. The impact of utilizing B. cockerelli as a food source on the predator's development and reproduction was assessed by formulating age-stage, two sex life tables. The predatory potential of H. variegata on B. cockerelli nymphs was assessed in a closed arena and the effects of releasing H. variegata for the control of B. cockerelli were then evaluated. RESULTS: H. variegata could successfully develop and oviposit when feeding on B. cockerelli. However, both survival and the rate of development were higher for H. variegata feeding on Myzus persicae (Sulzer) than B. cockerelli or a mixed population of B. cockerelli and M. persicae. A type II functional response was observed for H. variegata. In the greenhouse, the releases of H. variegata larvae reduced the number of B. cockerelli nymphs by up to 66% and adults by up to 59%, which positively influenced the plant chlorophyll content and biomass. CONCLUSIONS: This study demonstrated the potential of the resident generalist predator, H. variegata as a biocontrol agent for the invasive pest, B. cockerelli, which may help improving current management strategies. © 2022 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
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Claims 8
Claim · model-written summary
H. variegata developed and oviposited while feeding on B. cockerelli.
- Taxon
- tomato
Solanum lycopersicumt0 - Interactor
- B. cockerelli
Bactericera cockerellie0pest - Second interactor
- H. variegata
Hippodamia variegatae0biocontrol_agent - Outcome
- H. variegata could successfully develop and oviposite0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato”
e0“H. variegata could successfully develop and oviposit when feeding on B. cockerelli.”
Claim · model-written summary
H. variegata survival was higher when feeding on M. persicae than on B. cockerelli or mixed prey.
- Taxon
- tomatoSolanum lycopersicumt0
- Interactor
- Myzus persicae
Myzus persicaee0pest - Second interactor
- H. variegataHippodamia variegatae0biocontrol_agent
- Outcome
- survivale0
- Direction
- highere0
- Comparator
- B. cockerellie0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato”
e0“both survival and the rate of development were higher for H. variegata feeding on Myzus persicae (Sulzer) than B. cockerelli or a mixed population of B. cockerelli and M. persicae.”
Claim · model-written summary
H. variegata developed faster when feeding on M. persicae than on B. cockerelli or mixed prey.
- Taxon
- tomatoSolanum lycopersicumt0
- Interactor
- Myzus persicaeMyzus persicaee0pest
- Second interactor
- H. variegataHippodamia variegatae0biocontrol_agent
- Outcome
- rate of developmente0
- Direction
- highere0
- Comparator
- B. cockerellie0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato”
e0“both survival and the rate of development were higher for H. variegata feeding on Myzus persicae (Sulzer) than B. cockerelli or a mixed population of B. cockerelli and M. persicae.”
Claim · model-written summary
H. variegata showed a type II functional response.
- Taxon
- tomatoSolanum lycopersicumt0
- Interactor
- H. variegataHippodamia variegatae0biocontrol_agent
- Outcome
- type II functional responsee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato”
e0“A type II functional response was observed for H. variegata.”
Claim · model-written summary
Releasing H. variegata larvae reduced B. cockerelli nymph numbers by up to 66% in the greenhouse.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- releases of H. variegata larvaee0
- Interactor
- B. cockerelliBactericera cockerellie0pest
- Second interactor
- H. variegataHippodamia variegatae0biocontrol_agent
- Outcome
- number of B. cockerelli nymphse0
- Direction
- reducede0
- Value
- up to 66%e0
- Setting
- greenhousee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato”
e0“In the greenhouse, the releases of H. variegata larvae reduced the number of B. cockerelli nymphs by up to 66% and adults by up to 59%”
Claim · model-written summary
Releasing H. variegata larvae reduced B. cockerelli adult numbers by up to 59% in the greenhouse.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- releases of H. variegata larvaee0
- Interactor
- B. cockerelliBactericera cockerellie0pest
- Second interactor
- H. variegataHippodamia variegatae0biocontrol_agent
- Outcome
- B. cockerelli nymphs by up to 66% and adultse0
- Direction
- reducede0
- Value
- up to 59%e0
- Setting
- greenhousee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato”
e0“In the greenhouse, the releases of H. variegata larvae reduced the number of B. cockerelli nymphs by up to 66% and adults by up to 59%”
Claim · model-written summary
Lady beetle releases positively influenced plant chlorophyll content.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- releases of H. variegata larvaee0
- Interactor
- B. cockerelliBactericera cockerellie0pest
- Second interactor
- H. variegataHippodamia variegatae0biocontrol_agent
- Outcome
- plant chlorophyll contente0
- Direction
- positively influencede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato”
e0“the releases of H. variegata larvae reduced the number of B. cockerelli nymphs by up to 66% and adults by up to 59%, which positively influenced the plant chlorophyll content and biomass.”
Claim · model-written summary
Lady beetle releases positively influenced plant biomass.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- releases of H. variegata larvaee0
- Interactor
- B. cockerelliBactericera cockerellie0pest
- Second interactor
- H. variegataHippodamia variegatae0biocontrol_agent
- Outcome
- biomasse0
- Direction
- positively influencede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato”
e0“the releases of H. variegata larvae reduced the number of B. cockerelli nymphs by up to 66% and adults by up to 59%, which positively influenced the plant chlorophyll content and biomass.”