Dataset: Annotations of video taken under dissecting microscope of Obelia feeding on a natural prey assemblages (Jellyfish predation in turbulence project)

ValidatedFinal no updates expectedVersion (2016-07-06)Dataset Type:experimental

Principal Investigator: Kelly Rakow Sutherland (University of Oregon)

BCO-DMO Data Manager: Nancy Copley (Woods Hole Oceanographic Institution)


Project: Influence of organism-scale turbulence on the predatory impacts of a suite of cnidarian medusae (jellyfish predation in turbulence)

Feeding behavior sequences (2- 10 min) with a mixed prey assemblage were recorded at 30 or 60 Hz under a dissecting microscope with a Sony HD camcorder (1920 x 1080 pixels) to analyze individual prey encounters and captures.

For each prey encounter, the diameter of the Obelia (with and without tentacles), the length of the prey (longest dimension), the location of prey encounter (tentacle tip, center or base), timing of encounter during pulse cycle (contraction, relaxation, still) and the prey transfer time (time to transfer prey from the tentacle to the manubrium) were measured using ImageJ (NIH).


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