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BEHAVIOURAL ECOLOGY Deepa S. Pureswaran Brian T. Sullivan

Deepa S. Pureswaran Brian T. Sullivan
Matthew P. Ayres
Fitness consequences of pheromone production and host selection
strategies in a tree-killing bark beetle (Coleoptera: Curculionidae:
Received: 20 September 2005 / Accepted: 14 February 2006 / Published online: 12 April 2006
Springer-Verlag 2006
Abstract Timing of arrival at a resource often determines
an individual's reproductive success. Tree-killing bark
beetles can reproduce in healthy trees by attacking in
adequate numbers to overcome host defences that could
otherwise be lethal. This process is mediated by aggre-
gation and antiaggregation pheromones. Beetles that
arrive early in such a ``mass attack'' must contend with
undiminished tree defences, and produce enough pher-
omones to attract more beetles, but have a head start on
gallery construction and egg-laying. Beetles that arrive
late may be impeded by competition and diminishing
availability of phloem, but should experience fewer costs


Source: Ayres, Matthew.P. - Department of Biological Sciences, Dartmouth College


Collections: Environmental Sciences and Ecology