Dataset: Obelia feeding video
Deployment: FHL_Sutherland

Annotations of video taken under dissecting microscope of Obelia feeding on a natural prey assemblage collected from FHL.

Principal Investigator:

Kelly Rakow Sutherland (University of Oregon, OIMB)

BCO-DMO Data Manager:

Nancy Copley (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Project:

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

Current State:

Preliminary and in progress

Data URL:

https://www.bco-dmo.org/dataset-deployment/651279/data

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Description

Methods & Sampling

Dataset acquisition description

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).

Data Processing Description

Dataset Processing Description

BCO-DMO Processing:

- added conventional header with dataset name, PI name, version date
- renamed parameters to BCO-DMO and BODC standards
- spelled out encounter locations rather than using code letters
- reduced digits to right of decimal to reflect sampling precision

More information about this dataset deployment

Funding

Award Number	Funding Source
OCE-1155084	NSF Division of Ocean Sciences

Instruments

Camera

Supplied Name:

Supplied Description:

Sony HDR-HC9 camcorder (1920 x 1080 pixels, 30 frames s-1; Sony Electronics Inc., Fort Myers, FL, USA) with a 16 x 9 cm field-of view.

Instrument Type

Generic Name: Camera

Acronym: camera

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/311/

Generic Description:

All types of photographic equipment including stills, video, film and digital systems.

Microscope - Optical

Supplied Name:

Supplied Description:

Dissecting microscope

Instrument Type

Generic Name: Microscope - Optical

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/LAB05/

Generic Description:

Instruments that generate enlarged images of samples using the phenomena of reflection and absorption of visible light. Includes conventional and inverted instruments. Also called a "light microscope".

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
filename_avi	video filename	unitless	no_bcodmo_term
frame_encount	frame number of encounter	unitless	no_bcodmo_term
frame_transfer_start	frame number at start of prey transfer	unitless	no_bcodmo_term
frame_transfer_end	frame number at end of prey transfer	unitless	no_bcodmo_term
time_totl	total time from prey encounter to end of transfer	seconds	time_elapsed
time_encount_transfer	time from encounter to start of prey transfer	seconds	time_elapsed
time_transfer_totl	time from start to end of prey transfer	seconds	time_elapsed
time_pulse_encount	time during pulse cycle of encounter: Beginning of pulse; Recovery phase; Relaxation phase	unitless	no_bcodmo_term
location_encount	encounter location on tentacle	unitless	no_bcodmo_term
prey_type	prey type	unitless	no_bcodmo_term
size_obelia	Obelia size	mm	length
size_prey	prey size	mm	length

Database

Contribute Data

Dataset: Obelia feeding video
Deployment: FHL_Sutherland

Dataset acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: Obelia feeding videoDeployment: FHL_Sutherland

Dataset acquisition description

Dataset Processing Description

Dataset: Obelia feeding video
Deployment: FHL_Sutherland