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Free Content Age and Growth of Anthocidaris Crassispina (Echinodermata: Echinoidea) in Hong Kong

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Abstract:

Age and growth of Anthocidaris crassispina at Hong Kong were investigated by counting and measuring growth rings on genital plates. Growth profiles were computed using a nonlinear regression technique. A. crassispina has a lifespan of about 9 years. Juveniles settle at a size of between 0.42 and 0.69 mm test diameter and maximum growth rates occur in the years 2 to 4 (14.3–15.7 mm·year–1). The age structure of natural populations is influenced by fishing mortality. In harvested populations on the east and south coasts, urchins were seldom over 5 years old.

Document Type: Research Article

Publication date: July 1, 1990

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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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