Hopkins Marine Station Student Paper

Browse Titles | Search Citations & Abstracts

(full paper is archived in the Miller Library)

Title: Conduciton and velocity and in vivo studies on the giant fibres of the squid Loligo opalescens
Student Author(s): Otis, Thomas S.
Faculty Advisor(s): Gilly, William
Pages: 24
Location: Final Papers Biology 175H
Date: June 1987
Keywords: biology of cephalopods
Abstract: Data gathered on the escape response of the squid Loligo opalescens, indicates an output through the giant fibre system that arrives to the muscles essentially synchronously (within 2-5 msec.). Further, the first in vivo recordings ever made on the species indicate that the giant fibre system gives a very stereotyped pattern of discharge each time it fires. The giant fibres do not allow the animal to escape any faster, however. It is also observed that giant fibre spikes do not always occur during jetting, that multiple spike discharges are common, and that the number of spikes per jet control the intensity of the jet. Finally, this data suggests a possible course of evolution for the giant fibre pathway.