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Improving lives by solving problems in agriculture and the environment
Staff image of Tim  Haye

Tim Haye Head Arthropod Biological Control

T: +41 (0)32 4214883


Rue des Grillons 1 CH-2800 Delémont, Switzerland

My role as a research scientist and project coordinator for arthropod biological control at CABI's Swiss centre involves research on classical biological control of insect pests with particular emphasis on host-range assessment and non-target impacts of parasitoids. More recently, I started to work on the impact of climate change on agricultural pests and their natural enemies. My many years’ experience in biological control include project work on agricultural, horticultural and forestry pests, eg. Cabbage Seedpod Weevil, Swede Midge, Lygus Plant Bugs, Brown Marmorated Stink Bug, Lily Leaf Beetle, Western Corn Rootworm, Gypsy Moth and Delia Root Maggots.

I have a broad background in entomology, ecology, behavior and rearing of arthropod biological control agents. I have work experience in Canada, Mexico, India, China and many European countries, where I have conducted field and laboratory experiments and helped to develop methods for integrated pest management of insect pests. I have supervised several international MSc and PhD students from Canadian Universities (eg. Simon Fraser University, Carleton University, University of Manitoba).

Project image: Controlling Japanese knotweed in Great Britain

Controlling the cabbage seedpod weevil in Canada

The cabbage seedpod weevil is a widely distributed pest of cruciferous crops in Europe and North America, causing substantial economic losses in canola crops in Canada. Current control measures still rely on applying broad-spectrum insecticides. We are collecting European distribution data for a parasitic...
Project image: Controlling Japanese knotweed in Great Britain

Protecting leeks and onions from pests

The invasive leek moth poses a significant and immediate threat to producers of leeks, onions, garlic and chives in North America. The larvae mine the green tissues, reducing the marketability of crops. The pest’s distribution is expanding, with no signs of suppression by indigenous natural enemies. We are...
Project image: Controlling Japanese knotweed in Great Britain

Biological control of brown marmorated stink bug

International trade is a common way for insects to ‘hitch-hike’ their way to new countries. The brown marmorated stink bug, originally from East Asia, has become a harmful invasive pest of many fruit and vegetable crops in North America and Europe. Biological control using Asian or European natural enemies...
Project image: Controlling Japanese knotweed in Great Britain

Biological control of diamondback moth in Canada

The diamondback moth is a global pest. Canadian farmers often have use chemicals to protect their crops. This is costly and the pest is becoming immune, meaning additional control options are needed. In Europe, Asia and Africa, Diadromus collaris, is a major parasitoid of the moth. It has been introduced to...
Project image: Controlling Japanese knotweed in Great Britain

Biological control of apple leaf-curling midge in Canada

A European biological control agent may help control an exotic pest of apple trees in western Canada. Damage from the apple leaf-curling midge in eastern Canada was effectively reduced by introducing a European natural enemy, Platygaster demades, in the 1990s. The pest arrived in British Columbia more...
Project image: Controlling Japanese knotweed in Great Britain

Biological control of the Spotted wing Drosophila - Drosophila suzukii

Drosophila suzukii Matsumura (Diptera: Drosophilidae), a fruit fly from East Asia, is now a serious economic pest of soft fruits and berries across Europe, the Americas and North Africa. In this project we are focusing on finding natural enemies (parasitoids) of the pest to introduce into Europe. This...