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Free Content Irregularities in the Test of Regular Sea Urchins

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Test abnormalities are described in a number of regular urchins. These are mainly Lytechinus variegatus, but include also Tripneustes esculentus, Diadema antillarum, Eucidaris tribuloides and Echinometra lucunter. They include dimerous, trimerous, tetramerous and hexamerous examples, as well as lesser ray abnormalities. Some were the result of mechanical injury, but the hypothesis is stressed that most are the result of metabolic upset.

Document Type: Research Article

Publication date: 1974-09-01

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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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