Aggregation of Thanasimus dubius on Trees Under Mass-Attack by the Southern Pine Beetle 1
- 1 February 1979
- journal article
- research article
- Published by Oxford University Press (OUP) in Environmental Entomology
- Vol. 8 (1) , 178-181
- https://doi.org/10.1093/ee/8.1.178
Abstract
The temporal and spatial distribution of the predator Thanasimus dubius (F.) were very similar to those of its prey, Dendroctonus frontalis Zimm., during the mass-attack phase of the host tree colonization by the prey. Peak response for T. dubius occurred on the 4th day of the 11-day mass-attack period of the southern pine beetle. Southern pine beetles arrived in greatest numbers on the 3rd day of that period. Approximately 64% of the total number of responding beetles for both species were trapped on the lower one-half of the infested bole. Peak activity of T. dubius, as measured by trap catch, occurred between 0900 and 1100 h, with a smaller peak at 1900 h. Peak activity of the southern pine beetle occurred at ca. 1700 h. Temperature appeared to influence diurnal activity of T. dubius with decreased activity occurring when daily temperatures were highest.This publication has 2 references indexed in Scilit:
- Aggregation of the Southern Pine Beetle 1 in Response to Attractive Host Trees 2Environmental Entomology, 1977
- The Clerid Beetle, Thanasimus dubius, as a Predator of the Southern Pine BeetleJournal of Economic Entomology, 1966