Hopkins Marine Station Student Paper

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(full paper is archived in the Miller Library)

Title: Interactions of three species of subtidal Tegula with three common benthic predators
Student Author(s): Awad, E. Bruce
Faculty Advisor(s): Watanabe, Jim
Pages: 44
Location: Final Papers Biology 175H
Date: June 1994
Abstract: This study investigates the chemoreceptive abilities and escape responses of Tegula brunnea, T. montereyi, and T. pulligo to common predators. The predators studied were the sea stars Pisaster giganteus and Pycnopodia helianthoides, and the crab Cancer anternnarius. T. brunnea and T. pulligo could both detect Cancer from waterborne olfactory cues. Furthermore, all three Tegula species took a signficantly longer time to emerge from their shells in Cancer water as opposed to Pisaster or Pycnopodia water. T. brunnea exhibited a flight response in the starfish waters but not in Cancer water. T. pulligo exhibited a flight response to Pycnopodia, but not to Pisaster or Cancer. T. montereyi displayed a flight response in Pisaster water but was more stationary in Pycnopodia and Cancer waters.