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


     

Biol Bull 170: 232-243. (April 1986)
© 1986 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 HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by SNYDER, M. J.
Right arrow Articles by CHANG, E. S.
Right arrow Search for Related Content
PubMed
Right arrow Articles by SNYDER, M. J.
Right arrow Articles by CHANG, E. S.

EFFECTS OF EYESTALK ABLATION ON LARVAL MOLTING RATES AND MORPHOLOGICAL DEVELOPMENT OF THE AMERICAN LOBSTER, HOMARUS AMERICANUS

MARK J. SNYDER 1 and ERNEST S. CHANG 1

1 Bodega Marine Laboratory, University of California, P. O. Box 247, Bodega Bay, California 94923

Larvae of the lobster, Homarus americanus, displayed abbreviation of subsequent molt intervals in response to bilateral eyestalk ablation at the 2nd stage. The interval in which the ablation occurred (2nd stage) was occasionally shortened. However, the 3rd stage molt interval was always abbreviated. At the 4th stage the ablated larvae were larger than intact controls. Removal of the last pair of swimming legs, as a control for the trauma of eyestalk ablation, slightly decreased growth but had no effect on molt interval lengths. Eyestalk removal sometimes resulted in 4th stage larvae with characteristics intermediate between normal 3rd and 4th stages. Eyestalkless larvae that were reared communally and fed frozen Artemia formed significant numbers of these intermediates. Eyestalkless larvae reared individually and fed live Artemia nauplii rarely formed intermediates. These results imply that although eyestalks may be involved in the regulation of both the timing and growth increment of larval molting, they may not mediate the morphological aspects of lobster metamorphosis.

Submitted on July 15, 1985
Accepted on January 8, 1986




This article has been cited by other articles:


Home page
 Integr. Comp. Biol.Home page
S. L. Tamone, M. M. Adams, and J. M. Dutton
Effect of Eyestalk-Ablation on Circulating Ecdysteroids in Hemolymph of Snow Crabs, Chionoecetes opilio: Physiological Evidence for a Terminal Molt
Integr. Comp. Biol., January 1, 2005; 45(1): 166 - 171.
[Abstract] [Full Text] [PDF]

Home page
 Integr. Comp. Biol.Home page
E. S. Chang, S. A. Chang, and E. P. Mulder
Hormones in the Lives of Crustaceans: An Overview
Integr. Comp. Biol., October 1, 2001; 41(5): 1090 - 1097.
[Abstract] [Full Text] [PDF]

Home page
 Integr. Comp. Biol.Home page
H. Laufer and W. J. Biggers
Unifying Concepts Learned from Methyl Farnesoate for Invertebrate Reproduction and Post-Embryonic Development
Integr. Comp. Biol., June 1, 2001; 41(3): 442 - 457.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1986 by the Marine Biological Laboratory.