Hopkins Marine Station Student Paper

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(full paper is archived in the Miller Library)

Title: The young of the commensal gastropod crepidula adunca: feeding, behavior, and habitat
Student Author(s): Yokoe, Deborah S.
Faculty Advisor(s): Baxter, Charles
Pages: 22
Location: Final Papers Biology 175H
Date: June 1980
Keywords: symbiosis at the seashore
Abstract: The young of intertidal Crepidula adunca are dispersed from the female and sink down into sandy, shell-fragmented, lower habitats where they attach onto small gastropod shells. As they outgrow the host shell, they move onto larger gastropod shells, producing a strong correlation between size of Crepidula and size of host shell. At some point in their life cycle, the Crepidula experience a strong attraction towards Tegula funebralis shells which does not involved the actualy animal or the shell surface material or texture but rather possibly an increased sensitivity and/or attraction towards Tegula shell shape. At this point the Crepidula attach to adult T. funebralis which prefer rock faces and crevices. It is in these rocky habitats that the adult Crepidula are found most abundantly in the intertidal region.