Raskoff, K. A.. Monterey Bay Aquarium Research Institute and UCLA Dept. of Biology,
, . A.. ,

 
VERTICAL DISTRIBUTIONS AND ECOLOGICAL INTERACTIONS OF THE MESOPELAGIC HYDROMEDUSAE OF MONTEREY BAY, CALIFORNIA
 
The biology and ecology of the mesopelagic cnidarians is examined using the Monterey Bay Aquarium Research Institute's ROV Ventana. Video observations, CTD/O2 data, and laboratory studies are coupled to provide information on the distributions, biology, and behaviors of many cnidarian taxa. Detailed vertical distributions for Aegina citrea, Colobonema sericeum, Haliscera spp., Mitrocoma cellularia, Solmissus marshalli, Solmissus insica, and Solmundella bitentaculata are given. The vertical distribution of many medusae are concentrated in bands of occurrence that are often exclusive of one another. These patterns of abundance are closely associated with oceanographic features, as well as with prey abundance. Seasonal shifts in both relative abundance and distribution are evident. Feeding behaviors, prey preference, and digestion times are investigated with ROV video analysis and laboratory experimentation. In situ gut content analysis reveals a diverse prey assemblage and digestion time studies have implications toward the impact of mesopelagic medusae on the midwater ecosystem as a whole.
 
Day: Tuesday, Feb. 2
Time: 02:30 - 02:45pm
Location: Hilton of Santa Fe
 
Code: CS67TU0230H