Date of Award
Honors College Thesis
Chet Rakocinski, Ph.D.
The egestion rate of the subsurface deposit feeding polychaet,e Capitella telata, was studied using a modification of a method from a previous benthic study conducted on the surface feeding polychaete, Nereis succinea. Day-Glo powder was mixed with sediment in various concentrations to identify an ideal composition within which the luminescent portion of the sediment would be visible in fecal pellets within the worm’s gut when viewed microscopically with ultraviolet light. Next, in a series of trials, worms were allowed to digest the final mixture over progressively decreasing periods of time to determine how long it took for tracer-laced sediment to travel through the worm’s gut. It was found that although the Day-Glo powder could be successfully used as a fecal pellet tracer for the capitellids, it’s use negatively affected the sizes of pellets produced by the worms.
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Parker, Ryan J., "Modification of a Fluorescent Particle Tracer Technique for Estimation of the Ingestion Rate of the Deposit-Feeding Polychaete, Capitella teleta" (2014). Honors Theses. 450.
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