Evaluation of the Effectiveness ofChilocorus kuwanae(Coleoptera: Coccinellidae) in Suppressing Euonymus Scale (Homoptera: Diaspididae)

Driesche, Roy Van; Idoine, Karen; Rose, Mike; Bryan, Mike

doi:10.1006/bcon.1998.0620

Cited by 12 publications

(4 citation statements)

References 2 publications

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“…Ideally, discrete populations of pest and predator should be monitored for several years at a variety of sites, including a series without coccinellid releases (e.g. Van Driesche et al 1998 ). In augmentation programmes, some assumptions regarding the per capita impact of a coccinellid species are implicit since release rates and intervals must be selected.…”

Section: Assays Of Consumptionmentioning

confidence: 99%

Quantifying the Impact of Coccinellids on their Prey

Michaud

Harwood

2012

Ecology and Behaviour of the Ladybird Beetles (Coccinellidae)

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Section: Assays Of Consumptionmentioning

confidence: 99%

Quantifying the Impact of Coccinellids on their Prey

Michaud

Harwood

2012

Ecology and Behaviour of the Ladybird Beetles (Coccinellidae)

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“…Knowledge of the taxonomy, diagnostic features, and geographical distribution of the species used for biological control of plant pests is of great practical importance. The ladybug Chilocorus kuwanae Silvestri, 1909 has been used for the biological control of coccids for more than 100 years [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 ]. However, despite this, the taxonomy of this species is still highly problematic, and its geographic distribution is uncertain [ 34 ].…”

Section: Introductionmentioning

confidence: 99%

Rigorous Morphological Studies Confirm That the Classical Object of Pest Control Chilocorus kuwanae Is the Same Species as Ch. renipustulatus (Coleoptera: Coccinellidae)

Bieńkowski

Orlova-Bieñkowskaja

2020

Insects

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The ladybug Chilocorus kuwanae, which was described in Japan, has been used for biological control of pests for 100 years. Chilocorus kuwanae was recently synonymized with Ch. renipustulatus described in Europe. The synonymy was based on the examination of few specimens. Our aim is to verify this synonymy. We studied all characters previously used to distinguish these taxa: eight metric and nine qualitative characters. Examination of 107 specimens from Japan and Sakhalin and 174 specimens from Europe showed that the ranges of variability in all characters in Asian and European specimens strongly overlap. There are no characters with interspecific hiatuses. Analysis with Amadon’s criteria showed that Asian and European specimens also do not represent different subspecies. Conclusions: (1) No differences between the specimens from Asia (Japan and Sakhalin) and Europe were found at specific or subspecific levels. Chilocorus kuwanae is a junior synonym of Ch. renipustulatus. (2) The releases of “Chilocorus kuwanae” in Europe and the Caucasus did not represent classical biological control since the same species was native to these regions. (3) A thorough taxonomical revision with the study of morphological variability should be conducted before the introduction of any species to new regions. (4) Taxonomical conclusions based on morphological studies should be confirmed by statistical methods.

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“…Feeding by euonymus scale causes leaf discoloration and abscission, stunted growth, branch dieback, and plant death. For example, the yearly replacement cost of plants that die from euonymus scale damage has been estimated as $355,568 in Massachusetts, USA alone (Driesche et al 1998). Generally, armored insect pests are among the most invasive insects in the United States and are responsible for considerable agricultural damage, estimated to cost roughly $1-2 billion USD in damage and management expenses each year .…”

mentioning

confidence: 99%

Journal of Plant Protection Research

Gal’chinsky,

Useinov,

Yatskova

et al. 2020

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In this short communication describing experiments carried out on the larvae of two insects, Unaspis euonymi Comstock (feeding on Euonymus japonicus Thunb.) and Dynaspidiotus britannicus Newstead (feeding on Laurus nobilis L.), we evaluate for the first time the efficiency of using DNA insecticides in the control of sap-sucking insects, including armored scale insects. Over a period of 10 days, high insect mortality was detected in both U. euonymi and D. britannicus, accompanied by a significant decrease in the concentration of target RNAs. At the same time, no visible changes were observed when the leaves of the host plants were subjected to treatment with DNA insecticides for one month. The results show the high efficiency of DNA insecticides used against hemipteran insect pests. It is noteworthy that the high efficiency of DNA insecticides and their low cost in comparison with RNA preparations provides a safe and extremely promising potential vehicle for the control of sap-sucking insects.

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Evaluation of the Effectiveness ofChilocorus kuwanae(Coleoptera: Coccinellidae) in Suppressing Euonymus Scale (Homoptera: Diaspididae)

Cited by 12 publications

References 2 publications

Quantifying the Impact of Coccinellids on their Prey

Quantifying the Impact of Coccinellids on their Prey

Rigorous Morphological Studies Confirm That the Classical Object of Pest Control Chilocorus kuwanae Is the Same Species as Ch. renipustulatus (Coleoptera: Coccinellidae)

Journal of Plant Protection Research

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