Research article - Peer-reviewed, 1989
Trapping a Local Population of Spruce Bark Beetles Ips Typographus (L.): Population Size and Origin of Trapped Beetles
Weslien, Jan; Lindelöw, ÅkeAbstract
A method of trapping local populations of Ips typographus was investigated in the field. The size of a population emerging from a hibernation site in the forest litter was estimated using tent traps. This estimate was compared with another estimate where beetles from the population were marked and recaptured in pheromone traps. The estimate of population size with mark-recapture was much higher than the estimate with tent traps, indicating a high degree of immigration. According to calculations only a minor part (less than 20%) of the beetles caught in the pipe traps originated in the local population. Re-emerging parent-adults were marked and released during the second flight period. The recapture rate was 29.8%, almost the same as during the first flight. Immigration during the first and second flight periods was estimated to be of similar magnitude. The results show that it is difficult to suppress local pop- ulations of highly mobile bark beetles by trapping.Published in
Holarctic Ecology1989, volume: 12, number: 4, pages: 511-514
Publisher: MUNKSGAARD INT PUBL LTD
Authors' information
Weslien, Jan
Swedish University of Agricultural Sciences, Department of Plant and Forest Protection
Swedish University of Agricultural Sciences, Department of Plant and Forest Protection
UKÄ Subject classification
Ecology
Forest Science
URI (permanent link to this page)
https://res.slu.se/id/publ/68810