Hopkins Marine Station Student Paper

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(full paper is archived in the Miller Library)

Title: Regeneration in the cirratulid polychaete Cirriformia spirabrancha (Moore, 1904)
Student Author(s): Sullivan, Neil
Faculty Advisor(s): Epel, David
Pages: 22
Location: Final Papers Biology 175H
Date: June 1968
Keywords: Polychaete worm
Abstract: 1) Regeneration of the tip of the prostomium, the tentacles, and the pygidium occurs in C. spirabrancha. 2) Regeneration of caudal segments may occur, but at a rate too slow to be observed during the available time period. Regeneration of the supraesophogeal ganglion may also occur. 3) There appears to be, in general, greater capacity for wound healing and faster pygidial regeneration in smaller animals than in larger animals. 4) The presence of an axial gradient of regenerative ability in small animals, and certain areas of increased wound healing ability and regenerative ability in larger worms is indicated by results of several experiments. 5) The conditions under which these experiments were conducted were probably not best suited for survival and regeneration of C. spirabrancha. Contradictory results were sometimes obtained from duplicate experiments. Therefore, the results of these experiments cannot be regarded as conclusive proof of the conclusions drawn from them, although futher experimentation may reveal the causes of the discrepancies.