Skip to main content

Free Content Delayed metamorphosis: Effect on growth and survival of juvenile sand dollars (Echinoidea: Clypeasteroida)

Download Article:
(PDF 923.3486328125 kb)
Delay of metamorphosis is an important aspect of the larval biology and ecology of many marine invertebrates. In most studies on delay of metamorphosis, the focus has been on the length of time that larvae could remain competent to metamorphose. The potential effects of delayed metamorphosis on postlarval juveniles have not been investigated previously. Results of studies on the sand dollars Dendraster excentricus and Echinarachnius parma, both of which have planktotrophic larvae, indicate that juveniles from larvae that metamorphosed soon after becoming competent tended to have higher growth rates than juveniles from larvae that metamorphosed after a prolonged period of competence. Juveniles that were fed cultured algae had higher growth rates but also higher mortality rates than unfed juveniles. Mortality rates in fed juveniles were correlated with length of delay of metamorphosis, but some mortality may have been an artifact of feeding. Unfed juveniles from larvae that had delayed metamorphosis for 4 to 7 weeks had low mortality rates suggesting that either the larvae had not utilized a significant amount of the lipid energy reserves needed by the juveniles to survive until they become self-sufficient or that energy reserves accumulated by larvae are not critical to early juvenile survival.

30 References.

No Supplementary Data.
No Data/Media
No Metrics

Document Type: Research Article

Publication date: 1986-09-01

More about this publication?
  • The Bulletin of Marine Science is dedicated to the dissemination of high quality research from the world's oceans. All aspects of marine science are treated by the Bulletin of Marine Science, including papers in marine biology, biological oceanography, fisheries, marine affairs, applied marine physics, marine geology and geophysics, marine and atmospheric chemistry, and meteorology and physical oceanography.
  • Editorial Board
  • Information for Authors
  • Subscribe to this Title
  • Terms & Conditions
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more