gov.noaa.nmfs.inport:24913 eng UTF8 gov.noaa.nmfs.inport:67308 dataset Database Southeast Fisheries Science Center (305)361-5761 75 Virginia Beach Drive Miami FL 33149 USA www.sefsc.noaa.gov WWW:LINK-1.0-http--link Website Website for this organization information 8:00 a.m. - 4:30 p.m. EST resourceProvider Carlson, John 850-234-6541 x221 850-235-3559 3500 Delwood Beach Road Panama City FL 32408 John.Carlson@noaa.gov pointOfContact 2026-03-04T19:17:18 ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for imagery and gridded data ISO 19115-2:2009(E) Diet of scalloped hammerhead shark in eastern Gulf of Mexico 1998 creation 2017 revision 2017 publication NOAA/NMFS/EDM 24913 https://www.fisheries.noaa.gov/inport/item/24913 WWW:LINK-1.0-http--link Full Metadata Record View the complete metadata record on InPort for more information about this dataset. information Bethea, Dana M 263 13th Avenue South St Petersberg FL 33701 Dana.Bethea@noaa.gov author https://www.ncei.noaa.gov/archive/accession/0163192 WWW:LINK-1.0-http--link Landing Page NCEI Accession 0163192 Online Resource download tableDigital 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. 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. completed Carlson, John 850-234-6541 x221 850-235-3559 3500 Delwood Beach Road Panama City FL 32408 John.Carlson@noaa.gov custodian notPlanned DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce DOC/NOAA/NMFS/SEFSC > Southeast Fisheries Science Center, National Marine Fisheries Service, NOAA, U.S. Department of Commerce dataCentre Global Change Master Directory (GCMD) Data Center Keywords 17.0 EARTH SCIENCE > BIOLOGICAL CLASSIFICATION EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > WATER DEPTH EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE theme Global Change Master Directory (GCMD) Science Keywords 17.0 Sphyrna lewini theme World Register of Marine Species (WoRMS) OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > GULF OF AMERICA place Global Change Master Directory (GCMD) Location Keywords 20.8 0163192 163192 theme NCEI ACCESSION NUMBER US DOC; NOAA; NMFS; Southeast Fisheries Science Center; Panama City, FL Laboratory theme NODC COLLECTING INSTITUTION NAMES ANIMALS - INDIVIDUAL - STOMACH CONTENTS BIOLOGICAL DATA STOMACH CONTENTS - PREY STOMACH CONTENTS - PREY COUNT STOMACH CONTENTS STOMACH CONTENTS - CONTENT WEIGHT TAXONOMY WATER TEMPERATURE water depth theme NODC DATA TYPES THESAURUS US DOC; NOAA; NMFS; Southeast Fisheries Science Center theme NODC SUBMITTING INSTITUTION NAMES Coastal Waters Of Florida gulf of mexico place NODC SEA AREA NAMES YSI - handheld multi-parameter instrument scale instrument NODC INSTRUMENT TYPES S. lewini S. tiburo diet fishery-dependent foraging ecology resource partitioning scalloped hammerhead sharks theme 1998-2005 temporal Crooked Island Sound St. Vincent Island place DOC/NOAA/NMFS/SEFSC > Southeast Fisheries Science Center, National Marine Fisheries Service, NOAA, U.S. Department of Commerce dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2017-04-24 publication 8.5 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian 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) project InPort otherRestrictions Cite As: Southeast Fisheries Science Center, [Date of Access]: Diet of scalloped hammerhead shark in eastern Gulf of Mexico [Data Date Range], https://www.fisheries.noaa.gov/inport/item/24913. NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose. otherRestrictions Access Constraints: None otherRestrictions Use Constraints: Please cite appropriately. unclassified Diet of bonnethead shark in eastern Gulf of Mexico NOAA/NMFS/EDM 24912 partOfSeamlessDatabase NOAA Data Management Plan (DMP) NOAA/NMFS/EDM 24913 https://www.fisheries.noaa.gov/inportserve/waf/noaa/nmfs/sefsc/dmp/pdf/24913.pdf WWW:LINK-1.0-http--link NOAA Data Management Plan (DMP) NOAA Data Management Plan for this record on InPort. information crossReference eng; US oceans -85.887 -85.087 29.652 30.275 Localized Sampling Area | Currentness: Ground Condition 1998 2005 false eng false Data Table schd_diet.csv 2022-05-31 publication diet_category_descriptions.csv 2022-05-31 publication schd_bio_data.csv 2022-05-31 publication location_areas.csv 2022-05-31 publication maturity_codes.csv 2022-05-31 publication schd_bio_data_Metadata.csv 2022-05-31 publication schd_diet_Metadata.csv 2022-05-31 publication NCEI Archived Data Accession GZ / GZIP NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact WWW:LINK-1.0-http--link NCEI Contact Information Information for contacts at NCEI. information distributor https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/accession/download/163192 WWW:LINK-1.0-http--link 163192.1.1.tar.gz download dataset 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) Data was entered into the database by hand. Carlson, John 850-234-6541 x221 John.Carlson@noaa.gov processor otherRestrictions Access Constraints: none |