Free Content Predation in Sea Urchins

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Abstract:

Two individuals of the long-spined West Indian sea urchin, Diadema antillarum, attacked other sea urchins after food deprivation. Spines, pedicellariae, and tests were devoured. Only certain species of sea urchins were attacked. Whether “taste preference” was involved here or whether Diadema physically could not or preferred not to devour other species of urchins is not known. It is believed that Diadema does not prey on other urchins under natural conditions unless food is scarce. A case in which a Pacific diadematid, Astropyga pulvinata, fed on another urchin is also cited.

Document Type: Research Article

Publication date: March 1, 1965

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  • 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.
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