Larval feeding behaviour affects the impact of staminate flower production on the suitability of balsam fir trees for spruce budworm

abies balsamea choristoneura fumiferana comportement alimentaire feeding behaviour feeding habits fertilidad fertilite fertility foraging insecte xylophage insectos perforadores de la madera larvae larvas larve performance de reproduction plant animal relations pollen population density pupae pupe recherche de nourriture relaciones planta animal relation plante animal reproductive performance reproductividad timber boring insects