Hixon, S. J.. Centre College, suzijo@hotmail.com
Graham, W. J.. Dauphin Island Sea Lab, mgraham@jaguar1.usouthal.edu

 
RESPIRATORY RESPONSE OF THE MOON JELLYFISH AURELIA AURITA TO PULSED FOOD
 
A number of recent studies have suggested jellyfish growth rates to limited by the availability of prey. Because jellyfish growth rates in nature are usually below the maximum obtained under a controlled-laboratory setting (i.e., usually starved), these animals have most likely evolved ways to mitigate effects of starvation over a broad spectrum of prey patchiness. Of particular interest is how jellyfish minimize the effects of starvation between very short periods of low food availability on a scale of a few hours. A set of respirometry experiments were conducted on the Moon jellyfish Aurelia aurita to test the hypothesis that these animals are capable of offsetting the effect of short-term starvation by lowering respiration rates between pulses of food. Initial results using a novel flow-through respirometry apparatus indicate that these animals are sensitive to short-term variability of food and that changes in respiration over these scales may reflect a very high 'specific dynamic action' associated with processing captured prey.
 
Day: Wednesday, Feb. 3
Time: Poster
Location: Sweeney Center
 
Code: SS54WE0848S