a1 Department of Natural Resource Sciences, Macdonald Campus of McGill University, Montréal, Quebec, Canada H9X 3V9
Because the detectability of host eggs is low, egg parasitoids rely on infochemicals other than those from the host egg itself, such as host plant synomones (Nordlund 1994; Meiners et al. 2000) and adult host kairomones (Nordlund et al. 1983; Nordlund 1994; Colazza et al. 1999; Meiners et al. 2000). Egg kairomones are used only in the final stages of host selection (Kainoh et al. 1982; Strand and Vinson 1982, 1983; Nordlund et al. 1987; Meiners et al. 2000; Takasu and Nordlund 2001).
(Received September 29 2004)
(Accepted February 15 2005)
p1 Present address: Horticultural Research and Development Centre, Agriculture and Agri-food Canada, 430 boulevard Gouin, Saint-Jean-sur-Richelieu, Quebec, Canada J3B 3E6.
1 Contribution 355/2005.03.03R of the Centre de recherche et de développement en horticulture, Agriculture et Agroalimentaire Canada, Saint-Jeansur-Richelieu, Québec, Canada.