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  • Enhancing the effectiveness of the parasitoid Diadegma semiclausum (Helen): Movement after use of nectar in the field
  • 作者: Lavandero, Blas; Wratten, Steve; Shishehbor, Parviz and Worner, Sue
  • literature id: 31808
  • catalog nub: TPL_LAVAND2005ETEOT15201580
  • 文献库: Taxapad收录文献
  • type: article
  • publication name: Biological Control
  • publish date: 2005-08-01
  • pages: 152-158
  • volume: 34
  • issue: 2
  • 创建时间: 2021-03-02 15:00:32
  • create by: zxmlmq (admin)
  • comment:

    Evidence is required to show that parasitoids are able to move between floral subsidies and the crop in sufficient numbers, and sufficiently rapidly to improve pest suppression. Marking and tracking techniques can elucidate parasitoid movement and the spatial structure of their population, and therefore, help determine the crop area in which to manage. This, in turn, would help in the deployment of nectar and pollen as resource subsidies, as well as determining the optimal timing for their implementation. Over two successive seasons, experiments were carried out to determine the effect of buckwheat (Fagopyrum esculentum) on the nutritional status and movement of the parasitoid Diadegma semiclausum and parasitism rates on its host Plutella xylostella. The number of parasitoids decreased significantly with the distance from the flowers; however, there was no trend in plots without flowers. The percentage of fed females varied from 72.4 to 77.7% irrespective of treatment. Although the results suggest that the parasitoids can move 80 in in a short period, parasitism rates were lower in a non-flower treated plot separated from a flower treated plot by just 60 in. Parasitoid mobility alone will not give a complete indication of the spatial arrangement to follow to produce enhanced parasitism rates. There is a clear difference between how far a parasitoid can move and how far apart floral subsidies should be deployed. [copyright] 2005 Elsevier Inc. All rights reserved. Plutella xylostella (Plutellidae) : Host Diadegma semiclausum (Ichneumonidae) : Parasite Animals and man; Control; Biological control; Nutrition; Diet; Parasites diseases and disorders; Parasites; Insect parasites; Hosts; Insect hosts; Land zones; Palaearctic region; Eurasia; Europe; United Kingdom Diadegma semiclausum; Control of; Plutella xylostella (Lepidoptera); Lepidopteran hosts; Biocontrol effectiveness enhancement & prevalence; host food plant availability effects; Plutella xylostella; England; Lincoln Plutella xylostella; Control by; Diadegma semiclausum (Hymenoptera); Food plants; Fagopyrum esculentum; Food availability; Hymenopteran parasites; Biocontrol effectiveness enhancement & prevalence; food plant availability effects; Diadegma semiclausum; England; Lincoln none

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