Emergence of overwintered and new generation adults of the crucifer flea beetle, Phyllotreta cruciferae (Goeze) (Coleoptera: Chrysomelidae)

Ulmer, Bryan J.; Dosdall, Lloyd M.

doi:10.1016/j.cropro.2005.03.003

Cited by 33 publications

(35 citation statements)

References 16 publications

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“…First, unfavourable weather conditions during emergence can inXuence the population size of the overwintering generation in the spring. According to Burgess (1981) and Ulmer and Dosdall (2006), the type of the overwintering site also has an important role on Ph. cruciferae emergence; signiWcantly higher numbers of Xea beetles emerged from sheltered locations than from grassy areas.…”

Section: Discussionmentioning

confidence: 98%

“…However, sweep net sampling, which is usually applied to assess population size of the harmful stage of many agricultural pests is not suitable for Xea beetle monitoring because the beetles can move into the Weld quickly, which is connected with the presence of metafemoral spring (Furth 1988). That is why emergence cages and traps with visual or chemical attractant stimulus are used for monitoring or forecasting Xea beetle population trends (Ulmer and Dosdall 2006).…”

Section: Introductionmentioning

confidence: 99%

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The seasonal activity of flea beetles in Bulgaria

et al. 2009

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Using allyl-isothiocyanate-baited traps, we recorded six species of Xea beetles in cabbage and horseradish crops in the region of SoWa, Bulgaria in 2006 and 2007. The most abundant species in the traps was Ph. cruciferae (92-96%) followed by Ph. vittula, Ph. undulata and Ph. nigripes. The overwintering adults of these species emerge before the beginning of April and are active to the end of May-beginning of June. Catches of adults of the new generation occurred from the end of June-beginning of July to the second half of October-beginning of November. In 2006, air temperature and humidity strongly inXuenced the catches of the Xea beetles. Investigations of the reproductive status of Weld collected females of Ph. cruciferae showed that this species develops one generation per year in the region. The results of this study can be used in integrated pest management approach to Xea beetles control.

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Section: Discussionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

The seasonal activity of flea beetles in Bulgaria

et al. 2009

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“…Les diff erents comportements des insectes, ravageurs ou auxiliaires des cultures, comme la recherche de l'hôte, de nourriture, l'oviposition sont affect es par des signaux chimiques (Free et Williams, 1978) ou visuels, comme la couleur, la taille, l'architecture de la pante, la structure de la feuille (Hopkins et Ekbom, 1996Ulmer et Dosdall, 2006). De nombreux exemples sont d evelopp es sur les crucif eres en raison de la pr esence de nombreux signaux chimiques de la famille de m etabolites secondaires, les glucosinolates : les alkenyl glucosinoltaes, qui se d egradent en isothiocyanates volatiles sont plus attractifs pour la s election de la plante hôte.…”

Section: Concepts Et M Ecanismesunclassified

Comment favoriser la régulation biologique des insectes de l’échelle de la parcelle à celle du paysage agricole, pour aboutir à des stratégies de protection intégrée sur le colza d’hiver ?

Valantin‐Morison¹

2012

OCL

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Comment favoriser la r egulation biologique des insectes de l' echelle de la parcelle a celle du paysage agricole, pour aboutir a des strat egies de protection int egr ee sur le colza d'hiver ?Durant ces soixante dernieres annees, les modes de production agricole des pays du Nord ont permis d'assurer l'augmentation de la productivite agricole, grâce a une intensification importante des modes de conduite via le recours a une forte mecanisation et a une utilisation massive d'intrants. Ces nouvelles pratiques agricoles ont bel et bien conduit a une augmentation de la productivite mais ont egalement entraîne des impacts environnementaux et sanitaires considerables. D'abord, l'utilisation massive de fertilisants et de pesticides est reconnue comme ayant des effets nefastes sur les ecosystemes, et sur la gestion durable des bio-agresseurs, via l'apparition de resistance (Aubertot Abstract: How to enhance biocontrol of insects from the field scale up to agricultural landscape in order to propose integrated management strategies on winter oilseed rape? Continuous increases in the use of synthetic fertilisers and pesticides in agro-ecosystems have led to an increase in crop production, but also to a simplification of landscape and a decline in biodiversity at the field, cropping system level. Changes at landscape level, such as regional farm specialisation, increases in field size and the removal of hedgerows and woodlots suppression, have strengthened this tendency towards decline. The loss of biodiversity in agro-ecosystems has increased the need for external inputs, as important functions are no longer provided by beneficial species. This has led to an apparently inevitable reliance on petrochemicals in production systems. However, many scientists are arguing that this reliance on pesticides could be considerably reduced by making better use of biotic interactions. This review explores, in the light of recent studies, possible ways to increase beneficial biotic interactions in agro-ecosystems, and to improve bio control pest management at field and landscape scales. This review also points out the possible integrated cropping system on oilseed rape and concludes on the future research that has to be engaged to achieve the goal of improvement the natural bio-control of pests. For example at field scale, it has been shown that the choice of cultivar, the sowing date and nitrogen fertilisation practices can be manipulated to prevent interactions between pests and crop, in either time or space . We have also highlighted that beneficial biotic interactions may result from appropriate changes to the habitats of beneficial species, mediated by soil management and cover or mixing species utilisation. Finally, changes achieved at landscape scale appear promising. However, these approaches frequently also present drawbacks that may not necessarily be outweighed by the beneficial effects. Endly, we propose the approaches to design integrated crop management systems to reduce the damage of pests. However, major research efforts a...

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“…Overwintering of Phyllotreta spp. occurs in leaf litter and turf often beneath shelterbelts (Ulmer and Dosdall 2006). In spring, emergence of P .…”

Section: Introductionmentioning

confidence: 99%

Phyllotreta cruciferae and Phyllotreta striolata responses to insecticidal seed treatments with different modes of action

Tansey

Dosdall

Keddie

2009

J Applied Entomology

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The strategy used most commonly in western North America to protect seedlings of canola (Brassica rapa L. and Brassica napus L.) from attack by adults of the flea beetles Phyllotreta cruciferae (Goeze) and Phyllotreta striolata (Fabricius) (Coleoptera: Chrysomelidae) involves planting seed coated with insecticide for systemic activity. Previous research determined that the two beetle species responded differently to the most commonly used neonicotinoid seed dressings. However, other insecticides that exploit different modes of action have commercial potential for managing infestations of these pests, but no information exists on their efficacies for these flea beetle species. Studies were conducted to compare effects of the neonicotinoid compounds, thiamethoxam and imidacloprid, to spinosyn and fipronil as systemic seed treatments for reducing feeding damage to canola seedlings and increasing mortality of P. cruciferae and P. striolata. Phyllotreta cruciferae experienced greater mortality and caused less feeding damage than P. striolata to seedlings treated with the neonicotinoid compounds. Mortality increased and feeding damage decreased significantly when beetles fed upon seedlings treated with fipronil, indicating its potential usefulness for control of these pests. However, spinosyn seed treatment was relatively ineffective against either beetle species. Higher rates of P. striolata mortality with fipronil than thiamethoxam suggest that fipronil may provide improved flea beetle control over hundreds of thousands of hectares in western North America where flea beetle populations are dominated by P. striolata, and control with thiamethoxam has been suboptimal.

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Emergence of overwintered and new generation adults of the crucifer flea beetle, Phyllotreta cruciferae (Goeze) (Coleoptera: Chrysomelidae)

Cited by 33 publications

References 16 publications

The seasonal activity of flea beetles in Bulgaria

The seasonal activity of flea beetles in Bulgaria

Comment favoriser la régulation biologique des insectes de l’échelle de la parcelle à celle du paysage agricole, pour aboutir à des stratégies de protection intégrée sur le colza d’hiver ?

Phyllotreta cruciferae and Phyllotreta striolata responses to insecticidal seed treatments with different modes of action

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