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The Pattern and Range of Movement of a Checkered Beetle Predator Relative to Its Bark Beetle Prey by James T. Cronin; John D. Reeve; Richard Wilkens; Peter Turchin is a Environmental Science article available to read on EtoBox.

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Theoretical studies of predator‐prey population dynamics have increasingly centered on the role of space and the movement of organisms. Yet, empirical studies have been slow to follow suit. Herein, we quantified the long‐range movement of a checkered beetle, __Thanasimus dubius__, which is an important predator of a pernicious forest pest, the southern pine beetle, __Dendroctonus frontalis__. Adult checkered beetles were marked and released at five sites and subsequently recaptured at traps baited with pine and pine beetle semiochemicals and located at distances up to 2 km away from the release point. While the pattern of recaptures‐with‐distance at each site provided a modest fit to a simple random‐diffusion model, there was a consistent discrepancy between observed and expected recaptures: a higher than expected proportion of beetles were recaptured at the more distant traps. To account for this deviation, we developed a model of diffusion that allowed for simple heterogeneity in the population of marked beetles; i.e., a slow and fast moving form of the checkered beetle. This model provided a significantly better fit to the data and formed the basis for our estimates of intra‐for

Who reads The Pattern and Range of Movement of a Checkered Beetle Predator Relative to Its Bark Beetle Prey?

Author

James T. Cronin; John D. Reeve; Richard Wilkens; Peter Turchin

Publisher

John Wiley and Sons; Wiley (Blackwell Publishing); Blackwell Publishing Inc.; Wiley; JSTOR (ISSN 0030-1299)

Published

2000

Language

EN

Field

Environmental Science (Physical Sciences)