(full paper is archived in the Miller Library)
Title: The responses of Tegula funebralis to starfishes and predatory snails
Student Author(s): Yarnall, John L.
Location: Final Papers Biology 175H
Date: June 1963
Keywords: black turban snail
Abstract: The reactions of Tegula funebralis were tested to a number of starfishes and carnivorous snails. The responses vary according to the type of animal used as a source of the stimulus. Tegula flees from the contact or presence of predatory starfishes, ignores non-predaceous ones, and attempts to escape from or crawl upon the shell of the carnivorous snails used in these tests. Strong escape responses were elicited on contact with predatory starfishes such as Pisaster ochraceus, P. brevispinus, P. giganteus, Pychnopodia helianthoides, Leptasterias aequalis, and the carnivorous snails Thais emarginata and Acanthina spirata, but not the non-predatory sea stars Patiria miniata and Dermasterias imbricata. Escape reactions are also elicited by substances diffusing from the five predaceous sea stars listed above. No similar response is caused by the other test amimals.
Notes: Published 1964, Veliger 6 (suppl.): 56-58