Hopkins Marine Station Student Paper

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(full paper is archived in the Miller Library)

Title: Some physiological and behavioral aspects of the Smithora-Phyllospadix symbiotic interaction
Student Author(s): Perl, Matthew
Faculty Advisor(s): Burnett, Robin
%E Abbott, Isabella
Pages: 27
Location: Final Papers Biology 175H
Date: June 1980
Keywords: symbiosis at the seashore
Abstract: Spore packets from Smithora naiadum (Anderson) Hollenberg were shown to settle preferentially on its natural host Phyllospadix torreyi (S. Wats.) over several other natural and aritifical substrates. Flourescein dye was introduced to both intact and rhizome-severed basal portions of Phyllospadix blades but showed little translocation beyond point of entry. This dispelled the possibility of distant translocation of nutrients through Phyllospadix and into its epiphytes. An attempt to qualitatively determine if Smithora receives biochemical communicants from its seagrass host yielded no such products. A possible procedure for approaching the question was developed though. A possible circadian variation in photosynthetic rate in the red alga Smithora was demonstrated.