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Keywords
Physical Location
Data Set Info
Support Roles
Extents
Access Info
Distribution Info
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Data Quality
Data Management
Lineage
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Catalog Details

Summary

Short Citation
Southeast Fisheries Science Center, 2024: Diet of scalloped hammerhead shark in eastern Gulf of Mexico, https://www.fisheries.noaa.gov/inport/item/24913.
Full Citation Examples

Abstract

Juvenile scalloped hammerhead sharks, Sphyrna lewini, were collected in northwest Florida to examine foraging ecology, bioenergetics, and trophic level (30-60 cm FL mean FL 41.5 cm n 196). Diet analysis was performed using single and compound measures of prey quantity. Diet was also analyzed using seven broad diet categories (DC). Diet composition and estimated daily ration were compared to previously published information on bonnethead sharks, S. tiburo. Diet overlap was low between species. Juvenile S. lewini feed on relatively small (85 of prey items 5 shark length) teleosts (mostly bothids and sciaenids) and shrimps, whereas S. tiburo have been documented to feed mostly on crustaceans and plant material in northwest Florida. Plant material contributed little to the diet of S. lewini. Estimated daily ration was significantly lower for S. lewini (4.6 BW d-1) than for S. tiburo in northwest Florida, regardless if plant material was included in the model (p0.02 including and p0.00001 excluding plant material). Trophic level was calculated at 4.0 for S. lewini and 2.6 for S. tiburo. Stable isotope analysis showed S. lewini had significantly higher 15N values and significantly lower 13C values than S. tiburo, supporting the difference observed in calculated trophic level. These results provide evidence that small juvenile hammerhead species co-exist in coastal northwest Florida by feeding at separate trophic levels.

Distribution Information

Access Constraints:

None

Use Constraints:

Please cite appropriately.

Controlled Theme Keywords

BIOLOGICAL CLASSIFICATION, DOC/NOAA/NESDIS/NCEI, DOC/NOAA/NMFS/SEFSC, Sphyrna lewini, WATER DEPTH, WATER TEMPERATURE

Contact Information

Metadata Contact
John Carlson
John.Carlson@noaa.gov
850-234-6541 x221

Extents

Geographic Area 1

-85.887° W, -85.087° E, 30.275° N, 29.652° S

Localized Sampling Area

Time Frame 1
1998 - 2005

Item Identification

Title: Diet of scalloped hammerhead shark in eastern Gulf of Mexico
Status: Completed
Creation Date: 1998
Revision Date: 2017
Publication Date: 2017
Abstract:

Juvenile scalloped hammerhead sharks, Sphyrna lewini, were collected in northwest Florida to examine foraging ecology, bioenergetics, and trophic level (30-60 cm FL mean FL 41.5 cm n 196). Diet analysis was performed using single and compound measures of prey quantity. Diet was also analyzed using seven broad diet categories (DC). Diet composition and estimated daily ration were compared to previously published information on bonnethead sharks, S. tiburo. Diet overlap was low between species. Juvenile S. lewini feed on relatively small (85 of prey items 5 shark length) teleosts (mostly bothids and sciaenids) and shrimps, whereas S. tiburo have been documented to feed mostly on crustaceans and plant material in northwest Florida. Plant material contributed little to the diet of S. lewini. Estimated daily ration was significantly lower for S. lewini (4.6 BW d-1) than for S. tiburo in northwest Florida, regardless if plant material was included in the model (p0.02 including and p0.00001 excluding plant material). Trophic level was calculated at 4.0 for S. lewini and 2.6 for S. tiburo. Stable isotope analysis showed S. lewini had significantly higher 15N values and significantly lower 13C values than S. tiburo, supporting the difference observed in calculated trophic level. These results provide evidence that small juvenile hammerhead species co-exist in coastal northwest Florida by feeding at separate trophic levels.

Purpose:

To (1) quantify the diet and foraging ecology of juvenile S. lewini in northwest Florida, (2) model consumption rates using a bioenergetics approach, and (3) compare our findings to previously published diet and bioenergetics data for juvenile S. tiburo from the same area (Bethea et al. 2007) in an attempt to understand resource partitioning.

Keywords

Theme Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Data Center Keywords
DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
Global Change Master Directory (GCMD) Data Center Keywords
DOC/NOAA/NMFS/SEFSC > Southeast Fisheries Science Center, National Marine Fisheries Service, NOAA, U.S. Department of Commerce
Global Change Master Directory (GCMD) Science Keywords
EARTH SCIENCE > BIOLOGICAL CLASSIFICATION
Global Change Master Directory (GCMD) Science Keywords
EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > WATER DEPTH
Global Change Master Directory (GCMD) Science Keywords
EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE
World Register of Marine Species (WoRMS)
Sphyrna lewini View WoRMS Aphia Record
UNCONTROLLED
NCEI ACCESSION NUMBER 0163192
NCEI ACCESSION NUMBER 163192
NODC COLLECTING INSTITUTION NAMES US DOC; NOAA; NMFS; Southeast Fisheries Science Center; Panama City, FL Laboratory
NODC DATA TYPES THESAURUS ANIMALS - INDIVIDUAL - STOMACH CONTENTS
NODC DATA TYPES THESAURUS BIOLOGICAL DATA
NODC DATA TYPES THESAURUS STOMACH CONTENTS - PREY
NODC DATA TYPES THESAURUS STOMACH CONTENTS - PREY COUNT
NODC DATA TYPES THESAURUS STOMACH CONTENTS STOMACH CONTENTS - CONTENT WEIGHT
NODC DATA TYPES THESAURUS TAXONOMY
NODC DATA TYPES THESAURUS water depth
NODC DATA TYPES THESAURUS WATER TEMPERATURE
NODC SUBMITTING INSTITUTION NAMES US DOC; NOAA; NMFS; Southeast Fisheries Science Center
None diet
None fishery-dependent
None foraging ecology
None resource partitioning
None S. lewini
None S. tiburo
None scalloped hammerhead sharks

Temporal Keywords

Thesaurus Keyword
UNCONTROLLED
None 1998-2005

Spatial Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Location Keywords
OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > GULF OF MEXICO
UNCONTROLLED
NODC SEA AREA NAMES Coastal Waters Of Florida
NODC SEA AREA NAMES gulf of mexico
None Crooked Island Sound
None St. Vincent Island

Instrument Keywords

Thesaurus Keyword
UNCONTROLLED
NODC INSTRUMENT TYPES scale
NODC INSTRUMENT TYPES YSI - handheld multi-parameter instrument

Physical Location

Organization: National Centers for Environmental Information - Silver Spring, Maryland
City: Silver Spring
State/Province: MD

Data Set Information

Data Set Scope Code: Data Set
Data Set Type: Database
Maintenance Frequency: None Planned
Data Presentation Form: Table (digital)

Support Roles

Co-Author

CC ID: 830746
Date Effective From: 2005
Date Effective To:
Contact (Person): Bethea, Dana M
Address: 263 13th Avenue South
St Petersberg, FL 33701
Email Address: Dana.Bethea@noaa.gov

Data Steward

CC ID: 388147
Date Effective From: 2016
Date Effective To:
Contact (Person): Carlson, John
Address: 3500 Delwood Beach Road
Panama City, FL 32408
Email Address: John.Carlson@noaa.gov
Phone: 850-234-6541 x221
Fax: 850-235-3559

Distributor

CC ID: 283205
Date Effective From: 2017
Date Effective To:
Contact (Organization): National Centers for Environmental Information - Silver Spring, Maryland (NCEI-MD)
Address: NOAA/NESDIS E/OC SSMC3, 4th Floor, 1351 East-West Highway
Silver Spring, MD 20910-3282
Phone: (301) 713-3277

Metadata Contact

CC ID: 273992
Date Effective From: 1998
Date Effective To:
Contact (Person): Carlson, John
Address: 3500 Delwood Beach Road
Panama City, FL 32408
Email Address: John.Carlson@noaa.gov
Phone: 850-234-6541 x221
Fax: 850-235-3559

Publisher

CC ID: 830747
Date Effective From: 2017
Date Effective To:
Contact (Organization): Southeast Fisheries Science Center (SEFSC)
Address: 75 Virginia Beach Drive
Miami, FL 33149
USA
Phone: (305)361-5761
URL: https://www.fisheries.noaa.gov/about/southeast-fisheries-science-center
Business Hours: 8:00 a.m. - 4:30 p.m. EST
View Historical Support Roles

Extents

Currentness Reference: Ground Condition

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 273996
W° Bound: -85.887
E° Bound: -85.087
N° Bound: 30.275
S° Bound: 29.652
Description

Localized Sampling Area

Extent Group 1 / Time Frame 1

CC ID: 273995
Time Frame Type: Range
Start: 1998
End: 2005

Access Information

Security Class: Unclassified
Data Access Policy:

Open to everyone

Data Access Procedure:

Download Data fom provided links

Data Access Constraints:

None

Data Use Constraints:

Please cite appropriately.

Metadata Access Constraints:

none

Distribution Information

Distribution 1

CC ID: 567502
Start Date: 2017
End Date: Present
Download URL: https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/accession/download/163192
Distributor: National Centers for Environmental Information - Silver Spring, Maryland (NCEI-MD) (2017 - Present)
File Name: 163192.1.1.tar.gz
File Type (Deprecated): NCEI Archived Data Accession
File Size: ~ 0.512 MB
Compression: GZ / GZIP
Review Status: Chked Viruses Inapp Content

URLs

URL 1

CC ID: 1172521
URL: https://www.ncei.noaa.gov/archive/accession/0163192
Name: Landing Page NCEI Accession 0163192
URL Type:
Online Resource
File Resource Format: html

Data Quality

Analytical Accuracy:

Analytical error associated with foraging ecology measurements was typically = 0.2‰.

Quantitation Limits:

Items found in the stomachs were measured for length (to nearest cm), and

weighed (wet weight, to nearest 0.001 g)

Quality Control Procedures Employed:

n/a

Data Management

Have Resources for Management of these Data Been Identified?: No
Approximate Percentage of Budget for these Data Devoted to Data Management: 0
Do these Data Comply with the Data Access Directive?: Yes
Is Access to the Data Limited Based on an Approved Waiver?: No
If Distributor (Data Hosting Service) is Needed, Please Indicate: No
Approximate Delay Between Data Collection and Dissemination: 365
If Delay is Longer than Latency of Automated Processing, Indicate Under What Authority Data Access is Delayed:

N/A

Actual or Planned Long-Term Data Archive Location: World Data Center (WDC) Facility
Approximate Delay Between Data Collection and Archiving: 365
How Will the Data Be Protected from Accidental or Malicious Modification or Deletion Prior to Receipt by the Archive?:

The data resides on a secure government network requiring multi-factor authentication for network access.

Lineage

Process Steps

Process Step 1

CC ID: 283211
Description:

Data was entered into the database by hand.

Process Contact: Carlson, John
Phone (Voice): 850-234-6541 x221
Email Address: John.Carlson@noaa.gov

Related Items

Item Type Relationship Type Title
Data Set (DS) Part of a Seamless Database Diet of bonnethead shark in eastern Gulf of Mexico

InPort Catalog ID 24912 and InPort Catalog 242913 together together document constitute -- A Comparison of the foraging ecology and bioenergetics of the early life-stages of two sympatric hammerhead sharks from 1998-07-12 to 2005-07-27 (NCEI Accession 0163192)

Catalog Details

Catalog Item ID: 24913
GUID: gov.noaa.nmfs.inport:24913
Metadata Record Created By: Emily Harrell
Metadata Record Created: 2015-05-05 10:49+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2023-08-15 17:09+0000
Metadata Record Published: 2022-05-31
Owner Org: SEFSC
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Last Review Date: 2022-05-31
Metadata Review Frequency: 1 Year
Metadata Next Review Date: 2023-05-31