Date of Award
1973
Document Type
Thesis
Degree Name
Master of Science (M.S.)
Department
Biological Sciences
First Advisor
James A. Blake
First Committee Member
Victor L. Loosanoff
Second Committee Member
Steven Obrebski
Third Committee Member
Edmund H. Smith
Abstract
In the present study, information concerning morphology, ecology, fertilization and larval development of three sympatric species of Eusonus is presented. Morphological similarities are reviewed in part I. These similarities correspond with significant lack of variation found in larval development (part IV). Despite these similarities, as well as the ability to cross fertilize their species, the ecological and reproductive isolating mechanisms presented in part II and II provide a positive indication of the existence of three biologically distinct species. A comparative discussion reviews the efficacy of morphological criteria in differentiating the three closely related Euzonus species.
Pages
84
Recommended Citation
Parke, Steven Rhoads. (1973). Biological aspects of speciation in three sympatric Euzonus species at Dillon Beach, California (Polychaeta: Opheliidae). University of the Pacific, Thesis. https://scholarlycommons.pacific.edu/uop_etds/1816
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