Biol. Bull. Sign up for etocs!
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

Biol Bull 133: 141-149. (August 1967)
© 1967 Marine Biological Laboratory
This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by EBERT, T. A.
Right arrow Search for Related Content
PubMed
Right arrow Articles by EBERT, T. A.

GROWTH AND REPAIR OF SPINES IN THE SEA URCHIN STRONGYLOCENTROTUS PURPURATUS (STIMPSON)

THOMAS A. EBERT 1

1 Department of Biology, University of Oregon, Eugene, Oregaon 97403

1. Numbers of cycles in the spines of S. purpuratus were positively correlated with animal size.

2. Examination of 500 spine sections in this study led to the hypothesis that cycles are the result of breakage and regeneration.

3. The relationship between breakage, regeneration and internal spine morphology was established by producing sharp lines of color in the spines of young urchins and new cycles in the spines of larger animals, both as a result of regeneration.

4. From observed morphology and experimental evidence, it appears that growth of spines requires a very precise resorption as well as deposition of calcite.






HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1967 by the Marine Biological Laboratory.