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Date of Award


Document Type


Degree Name

Master of Science (M.S.)


Marine Sciences

First Advisor

James A. Blake

First Committee Member

Victor Loosanoff

Second Committee Member

Edmund H. Smith

Third Committee Member

Steven Obrebski


This study deals with the reproductive ecology and larval development of Mytilus californianus. Mytilus californianus is the common mussel found along the more exposed west coast of North America from the Aleutian Islands south Isla Socorro, Mexico (Soot-Ryen, 1955) and was chosen because it is an important species in rocky intertidal communities (being the most abundant if not the most conspicuous) and forms the basis for diverse associations of numerous other species. The reproductive cycle, larval development to settlement, comparisons of reproduction in high and low populations and field observations on larval settlement are described.



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