(full paper is archived in the Miller Library)
Title: Prey size selection by the predatory gastropod, Acanthina punctulata
Student Author(s): Springer, Scott R.
Faculty Advisor(s): Wagenbach, Gary
Location: Research Reports Carleton College Biology 212
Date: November 1983
Abstract: Optimal foraging theory predicts that for a predator limited to one prey there should be a prey size which maximizes the energy gained by consumption per unit foraging time. Observations were made of the predation of the intertidal gastropod, Acanthina punctulata, on populations of Littorina planaxis with a controlled distribution of size. Although size selection appreared to occur, it could not be compared with the theoretical predictions because of insufficient data. Futhermore, it was hypothesized that the selection observed was due to physical limitations on the relationship between predator and prey sizes rather than energy maximization.