Dataset: Ocyropsis gut contents

Name: Quantified Ocyropsis spp. gut content observations 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.918719.1

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: 2021-06-10

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:

Yes

Current State:

Final no updates expected

Quantified Ocyropsis spp. gut content observations from the Gulf Stream during June 2021 (Ocean Ctenos project)

Abstract:

Oceanic ctenophores are widespread predators on pelagic zooplankton. This data describes the daytime and nighttime gut contents of a ubiquitous oceanic ctenophore, Ocyropsis spp. as a component for evaluating trophic impact of this and other oceanic ctenophores in planktonic communities. In situ imaging of Ocyropsis spp. were made via blue-water (daytime) and black-water (nightime) 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). In situ, scaled images of Ocyropsis spp. guts were used to determine prey content. These were evaluated by measuring their dimensions and that of the ctenophore to estimate gut fullness.

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Archival Copy

Version Date	Archive	Persistent Identifier (PID)	Date PID Issued
2024-01-26	Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)	10.26008/1912/bco-dmo.918719.1	2024-01-29

Methods & Sampling

In situ images of Ocyropsis guts were taken by SCUBA divers in order to quantify gut contents of live animals in situ. These images were taken at various depths within the upper 15 meters of the water column at various times of day, over the course of multiple dives.

The data table differentiates day vs night time collection. High-resolution images taken using a Nikon 750 DLSR camera allowed estimation of gut fullness. ImageJ software aided the standardization of the estimations made from these image files.

BCO-DMO Processing

- Concatenated two separate files to represent both day and night time collection in one data table; an additional column added to indicate collection_time_of_day
- Units removed from column names
- Spaces removed from column names and replaced with underscores ("_")

Data Files

File
918719_v1_ocyropsis_gut_contents.csv (Comma Separated Values (.csv), 74.45 KB) MD5:8ced9f05769256b7fd4ea83ac9c1687f Primary data file for dataset ID 918719, 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 camera

Supplied Description:

High-resolution images using a Nikon 750 DLSR camera allowed estimation of gut fullness.

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.

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-%d	unitless	date
collection_time_of_day	Sample measurement time of day; value will either be "day" or "night"	unitless	time
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
ctenophore	Individual ctenophore ID, 20 total	unitless	individual
ctenophore_length	Total measured length of ctenophore including lobes	millimeters (mm)	length
gut_area	Area of ctenophore gut measured from image	millimeters squared (mm^2)	area
number_of_prey	Total counted number of prey measured in the gut	prey	count
prey_item	Indiviudal prey ID within a ctenophore	unitless	individual
prey_length	Length of prey measured from image	millimeters (mm)	length
prey_width	Width of prey measured from image	millimeters (mm)	width
prey_area	Area of prey measured from image	millimeters squared (mm^2)	area
gut_fullness	Gut fullness (%) for an individual ctenophore	unitless	gut_contents

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Database

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Dataset: Ocyropsis gut contents