Age and Growth of Astraea Undosa Wood (Mollusca: Gastropoda) in Baja California, Mexico

Author： Cupul-Magaña Fabio Germán   Torres-Moye Guillermo  

Publisher： University of Miami - Rosenstiel School of Marine and Atmospheric Science

ISSN： 0007-4977

Source： Bulletin of Marine Science, Vol.59, Iss.3, 1996-11, pp. : 490-497

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Abstract

Although the marine gastropod Astraea undosa is becoming an important fishery resource in Baja California, limited data are available on its growth. We verified formation of the annual opercular growth rings and compared the age-growth relationship for both sexes of a natural population in Todos Santos Bay. The hialine (low growth) ring was formed during spring-summer and the opaque (high growth) ring during autumn-winter. Growth patterns differed among sexes, the males having higher growth.

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