Frédérique de Lame

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This study establishes a theoretical framework for differentiating among possible behavioral mechanisms whereby sexual communication of moths is disrupted in crops treated with point sources of pheromone. The major mechanisms recognized in the mating disruption literature fall into two main categories: competitive (competitive attraction =(More)
Eleven out of 13 disruption profiles (plots of dispenser density vs. male catch) from moth sex pheromone literature were consistent with a competitive-attraction mechanism, in which dispensers attract males and thereby divert them from females. Mean dispenser activity (D a) across all competitive-attraction cases was 0.04 ± 0.06 (SD); values ranged from(More)
Social insects such as honey bees live in complex societies, and it is a fascination to many scientists how bees co-ordinate their behaviour according to the needs of the colony. Worker bees must perform a number of tasks in order to keep the hive functioning correctly. Younger bees tend the larvae and the hive and, from the age of three weeks, can abandon(More)
Studies were conducted in 0.07to 0.18-ha peach and apple plots to determine the effects of pheromone trap and hand-applied emulsiÞedwax pheromone dispenser application heights on captures of Grapholita molesta in traps baited with pheromone lures or virgin females. Traps and pheromone dispensers were placed either low (1.2Ð1.8 m) or high (2.7Ð4 m) within(More)
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