caa a22 4500 397572247 CHVBK 20180308164845.0 cr unu---uuuuu 161202e19960601xx s 000 0 eng 10.1093/ee/25.3.582 doi (NATIONALLICENCE)oxford-10.1093/ee/25.3.582 Measuring the Effective Sampling Area of a Pheromone Trap for Monitoring Population Density of Southern Pine Beetle (Coleoptera: Scolytidae) [Elektronische Daten] [Peter Turchin, FrançOis J. Odendaal] Multifunnel traps baited with frontalin and turpentine have been used to investigate dispersal of southern pine beetles, Dendroctonus frontalis Zimmermann, and are routinely used in the southern United States to monitor population trends of this serious forest pest. However,there is no quantitative data on the effective sampling area of these traps that would allow us to convert numbers of beetles caught in a trap to their absolute population density (numbers per hectare). We conducted field studies to determine the effective sampling area of the multifunnel trap. Using field releases of marked beetles, we estimated how the probability of capture declines with distance between the trap and the release point. The estimated relationship between the capture probability and distance is then translated into the effective sampling area. The effective sampling area for the multifunnel trap was estimated as ≍0.1 ha. Our results also indicate that the capture efficiency of a trap declines with increased density of host trees around the trap. We discuss our findings in the context of previous studies that measured attraction to pheromone traps in other species of bark beetles and in the gypsy moth. © 1996 Entomological Society of America Population Ecology nationallicence bark beetles nationallicence gypsymoth nationallicence pheromone-baited traps nationallicence attraction nationallicence dispersal nationallicence population monitoring nationallicence Turchin Peter Southern Forest Experiment Station, 2500 Shreveport Highway, Pineville, LA 71360 aut Odendaal FrançOis J. Zoology Department, University of Cape Town, Rondebosch 7700, SouthAfrica aut Environmental Entomology Oxford University Press 25/3(1996-06-01), 582-588 0046-225X 25:3<582 1996 25 ee https://doi.org/10.1093/ee/25.3.582 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1093/ee/25.3.582 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Turchin Peter Southern Forest Experiment Station, 2500 Shreveport Highway, Pineville, LA 71360 aut NATIONALLICENCE 700 1- Odendaal FrançOis J. Zoology Department, University of Cape Town, Rondebosch 7700, SouthAfrica aut NATIONALLICENCE 773 0- Environmental Entomology Oxford University Press 25/3(1996-06-01), 582-588 0046-225X 25:3<582 1996 25 ee Metadata rights reserved CC BY-NC-4.0 http://creativecommons.org/licenses/by-nc/4.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-oxford