Changes of pine noctuid (Panolis flammea Den. et Schiff., Lepidoptera: Noctuidae) male moths numbers in Tuczno forest district stands, in years 1999–2002
Numbers of pine noctuid males was controlled by using a pheromone traps with Panodor dispenser. Changes in moth numbers on whole research area and on separate control plots were analyzed, on the basis of mean number of collected moths per single trap.
Pine noctuid males numbers during research period varied a lot and changes in numbers had different directions: when the mean number of moths for a whole research area significantly decreased, in some control plots increased whereas when the mean number of moths for a whole research area significantly increased, in some control plots decreasing was noted. Such asynchronous changes of numbers inside the population confirm its complexity and might iindicate existence of less groups in population with subpopulation character. It is probably linked to heterogeneity of environment.
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