Accession Number : AD0734106

Title :   Marine Fouling Organisms: Natural Attractants and Repellents.

Descriptive Note : Final technical rept. 1 Nov 70-31 Oct 71,

Corporate Author : CITY OF HOPE NATIONAL MEDICAL CENTER DUARTE CALIF DIV OF NEUROSCIENCES

Personal Author(s) : Kittredge,J. S.

Report Date : 31 OCT 1971

Pagination or Media Count : 9

Abstract : 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.

Descriptors :   (*FOULING, INHIBITION), ALGAE, DEGRADATION, OILS, WATER POLLUTION, CRUSTACEA

Subject Categories : Biological Oceanography

Distribution Statement : APPROVED FOR PUBLIC RELEASE