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Dive into the research topics where Jamie E. Hopkinson is active.

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Featured researches published by Jamie E. Hopkinson.


Journal of Pest Science | 2008

Influence of food supplementation on the fitness of two biological control agents: a predatory nabid bug and a bollworm pupal parasitoid

M. R. Wade; Jamie E. Hopkinson; Myron P. Zalucki

Many arthropod predators and parasitoids exhibit either stage-specific or lifetime omnivory, in that they include extra-floral nectar, floral nectar, honeydew or pollen in their immature and/or adult diet. Access to these plant-derived foods can enhance pest suppression by increasing both the individual fitness and local density of natural enemies. Commercial products such as Amino-Feed®, Envirofeast®, and Pred-Feed® can be applied to crops to act as artificial-plant-derived foods. In laboratory and glasshouse experiments we examined the influence of carbohydrate and protein rich Amino-Feed UV® or Amino-Feed, respectively, on the fitness of a predatory nabid bug Nabis kinbergii Reuter (Hemiptera: Nabidae) and bollworm pupal parasitoid Ichneumon promissorius (Erichson) (Hymenoptera: Ichneumonidae). Under the chosen conditions, the provision of either wet or dry residues of Amino-Feed UV had no discernable effect on immediate or longer-term survival and immature development times of N. kinbergii. In contrast, the provision of honey, Amino-Feed plus extrafloral nectar, and extrafloral nectar alone had a marked effect on the longevity of I. promissorius, indicating that they were limited by at least carbohydrates as an energy source, but probably not protein. Compared with a water only diet, the provision of Amino-Feed plus extrafloral nectar increased the longevity of males and females of I. promissorius by 3.0- and 2.4-fold, respectively. Not only did female parasitoids live longer when provided food, but the total number of eggs laid and timing of deposition was affected by diet under the chosen conditions. Notably, females in the water and honey treatments deposited greater numbers of eggs earlier in the trial, but this trend was unable to be sustained over their lifetime. Egg numbers in these treatments subsequently fell below the levels achieved by females in the Amino-Feed plus extrafloral nectar and cotton extrafloral nectar only treatments. Furthermore, there were times when the inclusion of the Amino-Feed was beneficial compared with cotton extrafloral nectar only. Artificial food supplements and plant-derived foods are worthy of further investigation because they have potential to improve the ecosystem service of biological pest control in targeted agroecosystems by providing natural enemies with an alternative source of nutrition, particularly during periods of prey/host scarcity.


Australian Journal of Entomology | 2005

Efficacy of new insecticides for management of Helicoverpa spp. (Lepidoptera: Noctuidae) in Australian grain crops

David Murray; Richard Lloyd; Jamie E. Hopkinson


Agriculture, Ecosystems & Environment | 2015

Early-season movement dynamics of phytophagous pest and natural enemies across a native vegetation-crop ecotone

Sarina Macfadyen; Jamie E. Hopkinson; Hazel Parry; M.J. Neave; F.J.J.A. Bianchi; Myron P. Zalucki; Nancy A. Schellhorn


Basic and Applied Ecology | 2015

Plant composition modulates arthropod pest and predator abundance: Evidence for culling exotics and planting natives

Hazel Parry; Sarina Macfadyen; Jamie E. Hopkinson; F.J.J.A. Bianchi; Myron P. Zalucki; Anne Bourne; Nancy A. Schellhorn


Biological Control | 2013

Host selection and parasitism behavior of Lysiphlebus testaceipes: Role of plant, aphid species and instar

Jamie E. Hopkinson; Myron P. Zalucki; David Murray


Australian Journal of Entomology | 2013

Honeydew as a source of nutrition for Lysiphlebus testaceipes (Cresson) (Hymenoptera: Braconidae): effect of adult diet on lifespan and egg load

Jamie E. Hopkinson; Myron P. Zalucki; David Murray


Australian Journal of Entomology | 2008

Abundance and mortality of overwintering pupae of Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) on the Darling Downs, Queensland, Australia

Richard Lloyd; David Murray; Jamie E. Hopkinson


Biological Control | 2016

Developmental biology and prey preference of Diomus notescens Blackburn (Coleoptera: Coccinellidae): A predator of Aphis gossypii Glover (Hemiptera: Aphididae)

Jamie E. Hopkinson; Stephanie M. Kramer; Myron P. Zalucki


Archive | 2014

SAFEGUARDING AGAINST SILVERLEAF WHITEFLY INSECTICIDE RESISTANCE

Richard Lloyd; Jamie E. Hopkinson; Paul Grundy; Stephanie M. Kramer


Archive | 2015

Silverleaf whitefly resistance management

Jamie E. Hopkinson; Steph Kramer; Richard Lloyd; Paul Grundy

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David Murray

Commonwealth Scientific and Industrial Research Organisation

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Hazel Parry

Commonwealth Scientific and Industrial Research Organisation

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M. R. Wade

University of Queensland

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Nancy A. Schellhorn

Commonwealth Scientific and Industrial Research Organisation

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Sarina Macfadyen

Commonwealth Scientific and Industrial Research Organisation

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F.J.J.A. Bianchi

Wageningen University and Research Centre

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Anne Bourne

Commonwealth Scientific and Industrial Research Organisation

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M.J. Neave

Commonwealth Scientific and Industrial Research Organisation

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Rebeccah Powell

Commonwealth Scientific and Industrial Research Organisation

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