Stomach content analysis of the Blacktip Shark from the coastal waters of Florida from 2008 to 2010 (NCEI Accession 0166766)
Sharks may have an important role in marine ecosystems in relation to populations of fish and invertebrates at lower trophic levels. Fishery management plans stress the need for an ecosystem approach, but few quantitative studies on the foraging ecology of sharks have been published. Stomach contents and catch data of early life stages of blacktip sharks (Carcharhinus limbatus) taken from fishery independent surveys in Florida, were examined to test for overlap in resource use. This data set also contains stomach contents of blacktip shark that were archived from samples collected in Florida through observer programs and other fishery independent surveys.
Young-of-the-year blacktip sharks were found to feed mainly on sciaenids, whereas juveniles fed on clupeids. Compared to relative prey sizes published for teleost piscivores, blacktip sharks consume relatively large prey. Regardless of maturity state and species, diet overlap is high for species-life stage combinations that are similar in size however, species-life stages did not show significant habitat overlap. Prey categories shared by similar-sized species may not be limiting however, shark species may have alleviated competition pressure by partitioning the resource of time or space.
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GCMD Keyword Forum Page
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Full Metadata Record
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| @type | dcat:Dataset |
|---|---|
| accessLevel | non-public |
| contactPoint |
{ "fn": "Bethea, Dana M", "@type": "vcard:Contact", "hasEmail": "mailto:dana.bethea@noaa.gov" } |
| describedByType | application/octet-steam |
| description | Sharks may have an important role in marine ecosystems in relation to populations of fish and invertebrates at lower trophic levels. Fishery management plans stress the need for an ecosystem approach, but few quantitative studies on the foraging ecology of sharks have been published. Stomach contents and catch data of early life stages of blacktip sharks (Carcharhinus limbatus) taken from fishery independent surveys in Florida, were examined to test for overlap in resource use. This data set also contains stomach contents of blacktip shark that were archived from samples collected in Florida through observer programs and other fishery independent surveys. Young-of-the-year blacktip sharks were found to feed mainly on sciaenids, whereas juveniles fed on clupeids. Compared to relative prey sizes published for teleost piscivores, blacktip sharks consume relatively large prey. Regardless of maturity state and species, diet overlap is high for species-life stage combinations that are similar in size however, species-life stages did not show significant habitat overlap. Prey categories shared by similar-sized species may not be limiting however, shark species may have alleviated competition pressure by partitioning the resource of time or space. |
| distribution |
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| identifier | https://data.noaa.gov/waf/NOAA/nmfs/sefsc/iso/xml/24910.xml |
| issued | 2017-01-01T00:00:00.000+00:00 |
| keyword |
[ "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", "EARTH SCIENCE > BIOLOGICAL CLASSIFICATION", "Carcharhinus limbatus", "OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN", "OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > GULF OF AMERICA", "0166766", "166766", "US DOC; NOAA; NMFS; Southeast Fisheries Science Center; Panama City, FL Laboratory", "ANIMALS - INDIVIDUAL - STOMACH CONTENTS", "BIOLOGICAL DATA", "INDIVIDUAL FISH EXAMINATION - LENGTH", "INDIVIDUAL FISH EXAMINATION - SEX", "INDIVIDUAL FISH EXAMINATION - WEIGHT", "STOMACH CONTENTS - CONTENT WEIGHT", "STOMACH CONTENTS - DIGESTION", "STOMACH CONTENTS - FULLNESS", "STOMACH CONTENTS - PREY COUNT", "STOMACH CONTENTS - PREY TAXONOMY", "biological", "fish examination", "in situ", "laboratory analyses", "US DOC; NOAA; NMFS; Southeast Fisheries Science Center", "oceanography", "Coastal Waters Of Florida", "Gulf of Mexico", "North Atlantic Ocean", "scale", "VARIOUS SMALL VESSELS", "18VA", "Blacktip", "Carcharhinus limbatus", "Sharks", "Stomach contents", "fishery-dependent", "2008-2010", "Anclote Key", "Apalachicola Bay", "Crooked Island Sound", "Florida Bay", "Indian Pass", "Offshore Panama City", "St. Andrews Bay", "St. Joseph Bay", "St. Vincent Island", "inshore Panama City", "DOC/NOAA/NMFS/SEFSC > Southeast Fisheries Science Center, National Marine Fisheries Service, NOAA, U.S. Department of Commerce", "Sharks" ] |
| landingPage | https://www.fisheries.noaa.gov/inport/item/24910 |
| language |
[]
|
| license | https://creativecommons.org/publicdomain/zero/1.0/ |
| modified | 2017-01-01T00:00:00.000+00:00 |
| publisher |
{ "name": "Southeast Fisheries Science Center", "@type": "org:Organization" } |
| rights | otherRestrictions, unclassified |
| spatial | -80.35,24.4,-88.3,30.0 |
| temporal | 2008-01-01T00:00:00+00:00/2010-01-01T00:00:00+00:00 |
| theme |
[ "geospatial" ] |
| title | Stomach content analysis of the Blacktip Shark from the coastal waters of Florida from 2008 to 2010 (NCEI Accession 0166766) |
