Marine Fouling Organisms: Natural Attractants and Repellents.
Final technical rept. 1 Nov 70-31 Oct 71,
CITY OF HOPE NATIONAL MEDICAL CENTER DUARTE CALIF DIV OF NEUROSCIENCES
Pagination or Media Count:
An attempt was made to identify natural repellents of marine fouling organisms. A likely candidate for a natural repellent is the group of napthoquinone pigments of sea urchins, the spinochromes. The observation that in those sea urchins without pedicellaria capable of cleaning their spines, we have never observed either algal or sessile invertebrate growth lends support to the suggestion that these compounds may be algastats. It was not possible to establish any effect of these compounds. Observations by a number of naturalists have suggested that the marine tectibranch Aplysia californica may contain a repellent toward carniverous preditors either in its numerous epithelial glands or in its opaline gland. Using the crab feeding response as a bioassay it was possible to show that the opaline gland of this mollusc does contain a repellent.
- Biological Oceanography