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Westerlo, Belgium

Hughes G.E.,University of Birmingham | Owen E.,University of Birmingham | Sterk G.,Biobest Belgium NV | Bale J.S.,University of Birmingham
Physiological Entomology | Year: 2010

Adult parasitoids Lysiphlebus testaceipes Cresson (Hymenoptera: Aphidiidae) lose locomotory function and enter chill coma at significantly lower temperatures (-0.1 and -8.0 °C, respectively) than their second-instar hosts, the black bean aphid Aphis fabae Scop. (Hemiptera: Aphididae) (5.6 and 2.3 °C, respectively). Parasitoids are also more heat tolerant, stop walking at 41.4 °C, with heat coma at 44.1 °C, than the aphid (39.1 and 43.0 °C, respectively). Furthermore, across a range of temperatures (0-20 °C), L. testaceipes has considerably faster walking speeds than A. fabae. These data are discussed in relation to the climatic conditions under which L. testaceipes would be an effective control agent, and the likelihood of establishment and spread in northern European climates. © 2010 The Authors. Physiological Entomology © 2010 The Royal Entomological Society. Source


Messelink G.J.,Wageningen UR Greenhouse Horticulture | Bennison J.,ADAS Boxworth | Alomar O.,IRTA - Institute of Agricultural-Alimentary Research and Technology | Ingegno B.L.,University of Turin | And 5 more authors.
BioControl | Year: 2014

Biological pest control in greenhouse crops is usually based on periodical releases of mass-produced natural enemies, and this method has been successfully applied for decades. However, in some cases there are shortcomings in pest control efficacy, which often can be attributed to the poor establishment of natural enemies. Their establishment and population numbers can be enhanced by providing additional resources, such as alternative food, prey, hosts, oviposition sites or shelters. Furthermore, natural enemy efficacy can be enhanced by using volatiles, adapting the greenhouse climate, avoiding pesticide side-effects and minimizing disrupting food web complexities. The special case of high value crops in a protected greenhouse environment offers tremendous opportunities to design and manage the system in ways that increase crop resilience to pest infestations. While we have outlined opportunities and tools to develop such systems, this review also identifies knowledge gaps, where additional research is needed to optimize these tools. © 2014 The Author(s). Source


Hughes G.E.,University of Birmingham | Sterk G.,Biobest Belgium NV | Bale J.S.,University of Birmingham
BioControl | Year: 2011

Lysiphlebus testaceipes (Cresson) (Hymenoptera: Braconidae, Aphidiinae) is a parasitic wasp which plays an important role in the biological control of a number of aphid species. Through assessment of its thermal biology and low temperature tolerance, this study ascertains the establishment potential of L. testaceipes in cool temperate climates typical of northern Europe. The developmental threshold of L. testaceipes was 5.8°C. Rearing of parasitoids at shorter day lengths and lower temperatures indicated no ability to enter a diapause state. The supercooling points (SCP) of non-acclimated and acclimated parasitoid life stages were between -24.6°C and -17.7°C, with LTemp50 temperatures approaching these values, indicating a high level of cold tolerance in short exposures. At 5°C the LTime50 of acclimated larvae within parasitized aphids was 42.8 days. Acclimated pupae continued to develop with 54% adult emergence from mummies within 60 days. Acclimated parasitoid larvae and pupae, within living and mummified aphids, continued to develop during 70 days of winter field exposure and emerging adult parasitoids were reproductively viable under field conditions. These data indicate that where suitable host species are available throughout the year, L. testaceipes would be able to establish in northern Europe. © 2010 International Organization for Biological Control (IOBC). Source


Patent
Tokai Trading Co. and Biobest Belgium Nv | Date: 2011-01-24

This invention relates to a nest box (


Patent
Biobest Belgium N.V. | Date: 2014-02-07

The present invention relates to methods for rearing, storing or shipping predatory mites. The methods comprise contacting a rearing population of predatory mites with a succulent plant or one or more parts thereof; and optionally a nutritional source for said predatory mites.

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