Hopkins Marine Station Student Paper

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Title: A study of the effects of different food conditions and light wavelengths on the foraging behavior of Gaussia princeps: two possible foraging strategies and prey types
Student Author(s): Mattern, Kirsten
Faculty Advisor(s): Watanabe, Jim
Pages: 16
Location: Final Papers Biology 175H
Date: June 1994
Abstract: The feeding behavior and prey selection of the deep-water calanoid copepod Gaussia princeps was observed under three different light wavelengths and four different food conditions. Both the free-swimming and tethered Gaussia showed no significant preference for any food type, light wavelength, or combination of food and light. Two possible foraging strategies of the Gaussia are suggested. Comparison of the observed foraging strategies of the Gaussia to the known foraging tactics of the shallow-water calanoid copepods of similar structure show that Gaussia may be a suspension feeding herbivore or a cruise and sink feeding omnivore. This conclusion was made on the basis that the time copepods spend beathing their mouthparts is a measure of foraging strategy.