Cross-wind casting

The timescale over which the moths reactions to pheromone strands and clean air occur is remarkably small. The behavioral responses to both the onset (upwind surge) and loss of filaments (cross-wind casting) can be as fast as 0.15 s in Grapholita molesta (Busck) (Baker and Haynes 1987), but usually are between 0.3 and 0.6 s Vickers and Baker 1997). In studies of host-odor responses by flying female moths, only the latency of the casting flight response to loss of the odor has been measured, and its time course is similar to that of the latency for pheromone loss, 0.7 s (Haynes and Baker 1989). 

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