Sex-specific responses to aggregation pheromone Regulation of colonization density in the bark beetleIps paraconfusus
- 1 January 1983
- journal article
- research article
- Published by Springer Nature in Journal of Chemical Ecology
- Vol. 9 (1), 129-142
- https://doi.org/10.1007/bf00987777
Abstract
About equal numbers of each sex of flyingIps paraconfusus Lanier (Coleoptera: Scolytidae) were caught on traps several meters downwind from a male-infested ponderosa pine log releasing pheromone while a significantly different ratio of over four times more females than males were caught at the pheromone source. Females oriented directly to higher concentrations of colonizing males in a felled tree while males tended to land on the host in adjacent uncolonized areas. The attraction response of walking males to a 1∶1∶1 mixture of the synthetic pheromone components ispenol-ipsdienol-cis-verbenol was reduced progressively at higher concentrations while female response continued to increase. These responses may function to regulate density of colonization and limit intraspecific competition.This publication has 39 references indexed in Scilit:
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