Hopkins Marine Station Student Paper

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(full paper is archived in the Miller Library)

Title: Particle capture and water velocity dependent behavior of buccal podia of Cucumaria curata and C. pseudocurata
Student Author(s): Vogelzang
Faculty Advisor(s): Denny, Mark
Pages: 31
Location: Final Papers Biology 175H
Date: June 1983
Keywords: echinoderms
Abstract: Cucumaria curata and C. pseudocurata live and feed in the hydrodynamically stressful environment of exposed intertidal areas. They have been observed to actively feed in flow velocities up to 0.2 m/s, while allowing their feeding tentacles to bend with the current as flow increases. They suspension feed with peak effectiveness at some optimim low water velocity. Consequently, it is suggested that they incorporate detrital feeding into their food-gathering behavior in order to supplement the aerosol particle capture. However, this too presents mechanical problems. The feeding strategies and mechanisms of C. curata and C. pseudocurata may depend on local water velocities within their different microhabitats, and thus help to differentiate their respective niches.