Hopkins Marine Station Student Paper

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Title: Comparison of natural and cultured red abalone, Haliotis rufescens, populations: a re-evaluation of the California Abalone Enhancement Programs
Student Author(s): Powell, Valerie
Morris, Gregory
Faculty Advisor(s): Boggs, Carol
%E Powers, Dennis
Pages: 38
Location: Final Papers Biology 175H
Date: June 1992
Abstract: The decline of natural stocks of the commercially harvested red abalone, Haliotis rufescens, has led to land-based cultivation. To date, there has been little research on the effects of domestication upon the genetic diversity of this species. In this study, protein gel elctrophoresis was used to estimate the extent of inbreeding and/or genetic drift within cultured and natural red abalone populations. The present analysis of nine populations indicates that there are significant differences between the genetic compositions of the Santa Barbara 1992 population, believed to be an introduced population, and the natural populations, but only slight differences between the cultured and natural populations. This has implications for the success of the California abalone enrichment programs of 1979-1980. Additional results of this study have relevance for abalone aquaculture. The genetic drift analysis of one of the cultured populations indicates that not all of the abalone used for each hatchery spawn had actually contributed to the production of offspring.