none Techniques; Nutrition; Diet; Feeding; Carnivorous feeding; Predation; Parasites diseases and disorders; Parasites; Helminth parasites; Insect parasites; Hosts; Insect hosts; Ecology; Population dynamics; Competition; Abiotic factors; Physical factors; Land and freshwater zones; Nearctic region Nematoda; Coeloides rufovarietatus (Braconidae ); Coleopteran hosts; Dendroctonus rufipennis; Host population growth limitation; Host parasite relationships; North America; Coleopteran host population growth limitation, economic importance Dendroctonus rufipennis (Scolytidae); Ecological techniques; Population growth & limiting factors, management relations; Predator prey interactions, population growth limitation; Nematode parasites; Hymenopteran parasites; Coeloides rufovarietatus; Host parasite relationships; Hymenopteran parasite limitation of population growth; Mortality; Temperature relationships; Population study; Predators; Picoides (Aves) & Insecta; Competitive exclusion; Insecta; Economic importance in limiting population growth; Temperature; Mortality relationships, economic importance; North America; Limiting factors on population growth, management relationships Picoides pubescens leucurus; Picoides tridactylus dorsalis; Picoides villosus monticolae (Picidae ); Prey; Limiting effect on prey population; Predator prey interactions; Dendroctonus rufipennis (Coleoptera); Limitation of prey population growth; North America; Prey population growth limitation, economic importance