McConaugha, J. R. Old Dominion University, jmcconau@odu.edu
McConaugha, C. R. Old Dominion University, cmcconau@odu.edu

 
OMNIVORY IN DECAPOD LARVAE:IMPLICATIONS FOR GROWTH AND RECRUITMENT.
 
Decapod larvae were long considered to be strict carnivores, despite antidotal references to ingestion of phytoplankton. Recent studies indicate that some species can develop on phytoplankton exclusively while other species are omnivorous. The use of video techniques has demonstrated that both zoeal and megalopal stages use currents generated by swimming activities for suspension feeding. Zoea were more efficient at capturing small to medium sized particles, but can grasp prey in the 400-500 um range. Megalopae use both suspension feeding and grasping techniques to capture a wide range of prey from phytoplankton to copepodites. Comparisons between estuarine and coastal megalopae suggest there are differences in feeding efficiencies. The ability to use different feeding mechanisms to capture a wide range of prey items has obvious ecological value in a patchy environment.
 
Day: Thursday, Feb. 4
Time: 10:45 - 11:00am
Location: Eldorado Hotel
 
Code: SS26TH1045E