Interpopulational variation in emitted pheromone blend of cabbage looper moth, Trichoplusia ni

摘要: Female cabbage looper moths,Trichoplusia ni, from laboratory colonies initiated three locations across the United States emitted similar quantities and blend ratios of six known pheromone components. In contrast, females a long-established colony greater proportion four five minor components relative to major component, (Z)-7-dodecenyl acetate; only 11-dodecenyl acetate was in all populations sampled. Females this population at rate that field-collected colonies. Within each there were highly significant correlations among molecular weights. Correlations between different weights not as great, but often significant. Similarities field may indicate chemical signal species is conservative. The difference our other decrease intensity selection pressure usually would maintain these values.