Feeding Rates and Behavior of Zooplankton

Feeding rates of zooplankton are evaluated in relation to variables such as size, quality and concentration of food, and stage, size and taxonomy of zooplankton feeder. Changes in feeding rates can be interpreted as changes in the feeder's behavior. The early classification of zooplankton into herbi-, omni- and carnivorous requires modification. Recent observations indicate that there exist a few groups of obligate carnivores, and numerous groups of omnivores, with emphasis towards carni- or herbivory, and varying plasticity. Models aimed at predicting zooplankton feeding rates need to incorporate behavioral changes. To obtain environmentally realistic measurements in situ studies in three dimensions (X, Y, Z) over time are necessary.