Hopkins Marine Station Student Paper

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(full paper is archived in the Miller Library)

Title: Macroscopic algal foods of Littorina planaxis and L. scutulata
Student Author(s): Dahl, Arthur Lyon
Faculty Advisor(s): Blinks
Pages: 18
Location: Final Papers Biology 175H
Date: June 1964
Keywords: periwinkle
littorina
Abstract: In summary, Littorina planaxis generally eats only microscopic foods and those macroscopic algae small enought to be consumed entire or nearly so. The reasons for this are not clear, but may be related to the structure of the mouth, or the preference for certain types of substrates. Littorina scutulata is frequently found eating macroscopic algae, especially Cladophora, Pelvetia, and other more easily ingested forms. The effects of this feeding are probably important in limiting the spread of new plants, and the effects on established thalli, while possibly considerable in some instances, appear to vary greatly with the species of algae.
Notes: Published 1964, Veliger 7:139-143