Hopkins Marine Station Student Paper

Browse Titles | Search Citations & Abstracts

(full paper is archived in the Miller Library)

Title: Sensitivity to light in the deep-sea scyphozoans, Atolla sp.
Student Author(s): Hickey, Jena
Faculty Advisor(s): Baxter, Chuck
%E Robison, Bruce
Pages: 30
Location: Final Papers Biology 175H
Date: June 1992
Abstract: Few observations have been made on Atolla, a bioluminescent deep-sea coronate scyphomedusa. With the use of a remotely operated vehicle and a specially designed plankton-kriesel, Atolla in the Monterey Bay have been videoed in situ, captured, and observed in the lab to learn more about their behavior. A characteristic response to stimulation with light is described called the light reflex. The light reflex consists of a number of quick pulses and/or the medusa turning belly-up. Once in the belly-up position, Atolla rarely reacts to any further stimulus. In addition, scanning electron microscopy and light microscopy were used to take a preliminary look at the nematocyst composition of the trailer tentacle compared to the many short tentacles.