(full paper is archived in the Miller Library)
Title: Respiration in Littorina planaxis and L. scutulata
Student Author(s): Lebenzon, Joe
Location: Final Papers Biology 175H
Date: June 1964
Abstract: The populations of the two species of prosobranch mollusc Littorina common to the central California coast, Littorina planaxis (Phillippi, 1879) and LIttorina scutulata (Gould, 1849), overlap in the intertidal zone; however, the species L. planaxis is usually found inhabiting the gigher regions of the intertidalk while L. scutulata generally inhabits the lower. Their very distribution suggests a possible difference in respiratory rate between the two species and between individual of the same species.