Dataset: Oceanic ctenophore digestion times

Name: Observed digestion times of Ocyropsis spp. collected from the Gulf Stream during June 2021 (Ocean Ctenos project)
Published: 2024-01-26
Keywords: oceans

Cite This Dataset

DOI:10.26008/1912/bco-dmo.918678.1

Spatial Extent: N:26.4393 E:-79.5915 S:26.4393 W:-79.5915

Gulf Stream, 5 to 8 km off the coast of West Palm Beach, Florida (26° 43′ 93″ N, 79° 59′ 15″ W).

Temporal Extent: 2021-06 - 2021-06

Project:

Collaborative Research: Quantifying the trophic roles of epipelagic ctenophores (Ocean Ctenos)

Principal Investigator:

John H. Costello (Providence College)

Co-Principal Investigator:

Sean Colin (Roger Williams University, RWU)

Brad J. Gemmell (University of South Florida, USF)

Kelly Rakow Sutherland (University of Oregon)

Student:

Betsy Potter (University of South Florida, USF)

BCO-DMO Data Manager:

Sawyer Newman (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

Version Date:

2024-01-26

Restricted:

Validated:

Current State:

Preliminary and in progress

Observed digestion times of Ocyropsis spp. collected from the Gulf Stream during June 2021 (Ocean Ctenos project)

Abstract:

Oceanic ctenophores are widespread predators on pelagic zooplankton. This data describes the digestion rates of a widespread oceanic ctenophore, Ocyropsis spp. as a component for evaluating trophic impact of this and other oceanic ctenophores in planktonic communities. Collection and in situ imaging of Ocyropsis spp. were made during 2021 via blue-water (daytime) and black-water (nighttime) SCUBA diving from a small boat along the western edge of the Gulf Stream, 5 to 8 km off the coast of West Palm Beach, Florida (26° 43′ 93″ N, 79° 59′ 15″ W). Ctenophores were offered a mixed assemblage of copepods from the genera Acartia, Oncaea, and Microsetella. Ocyropsis spp. digestion times were then recorded.

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Archival Copy

Version Date	Archive	Persistent Identifier	Date Assigned
2024-01-26	Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)	10.26008/1912/bco-dmo.918678.1	2024-01-29

Methods & Sampling

Method & Sampling

Ctenophores were offered a mixed assemblage of copepods from the genera Acartia, Oncaea, and Microsetella. Digestion time observations were made using a Motic SMZ-171 stereo microscope and began immediately following the first observation of prey ingestion. The number of prey simultaneously digested varied from 3-9 prey. Ctenophore lobe length as well as digestive tract length were recorded. Observations continued every two minutes until digestion was complete. High resolution image series of digestion were also made for several individual ctenophores using a Nikon 750 DLSR camera coupled to the stereo microscope. Complete digestion was defined as the time at which the only visible remains of the copepod prey were chitinous structures.

BCO-DMO Processing

- Removed units from column names
- Spaces removed from column names and replaced with underscores ("_")
- Special characters removed from column names (Prey # changed to Prey_num; Digestive tract (gut) length mm changed to Digestive_tract_length)

Data Files

File
918678_v1_oceanic_ctenophore_digestion_times.csv (Comma Separated Values (.csv), 849 bytes) MD5:1af63e752e17a5fdab3aecfc3806233a Primary data file for dataset ID 918678, version 1

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-1830015
NSF Division of Ocean Sciences	OCE-1829945
NSF Division of Ocean Sciences	OCE-1829913
NSF Division of Ocean Sciences	OCE-1829932

Deployments

None available yet

Instruments

Camera

Supplied Name: Nikon 750 DLSR

Supplied Description:

High-resolution image series of digestion were also made for several individual ctenophores using a Nikon 750 DLSR camera coupled to the stereo microscope.

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: Motic SMZ-171 Stereo Microscope

Supplied Description:

Digestion time observations were made using a Motic SMZ-171 stereo microscope and began immediately following the first observation of prey ingestion.

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

Date and time formats are described in python strftime() syntax.

Supplied Name	Supplied description	Supplied Units	Standard Name
Species	Species - Ocyropsis spp.	unitless	species
Date	Sample measurement date Format: %Y-%m	unitless	date
Latitude	Latitude of observation site in decimal degrees, A positive value indicates a Northern coordinate	decimal degrees	lat
Longitude	Longitude of observation site in decimal degrees; a negative value indicates a Western coordinate	decimal degrees	lon
Prey_num	Counted number of prey digested simultaneously	prey	count
Digestion_time_in_mins	Total duration of digestion	minutes	duration
Digestion_time_in_seconds	Total duration of digestion	seconds	duration
Max_body_length	Total body length including lobes	millimeters	length
Digestive_tract_length	Digestive tract (gut) length within an indvidual ctenophore	millimeters	length

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Database

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Dataset: Oceanic ctenophore digestion times