Skip to main content

Free Content The Biology of Lytechinus Variegatus

Download Article:
(PDF 2222.8330078125 kb)


L. variegatus is an abundant urchin along the southeastern coast of the United States. It feeds largely on Thalassia, and is eaten by various gastropods and birds. Gonads develop at a test diameter of about 40 mm and at an age of about one year. The growth rate shows a negative correlation with temperature. Spawning occurs throughout the summer, at Miami, but is briefer in Bermuda where it also exhibits a lunar rhythm. Following an unusually cold winter in Miami, a large proportion were protandrous hermaphrodites and had an unusual test shape. Except in the oldest urchins, tissue production is 100 - 200 per cent in 30 days. A tentative estimate of food requirements and efficiency is given.

Document Type: Research Article

Publication date: 1963-01-01

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