2016
DOI: 10.3354/meps11723
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Abstract: The feeding ecology of 3 coastal shark species -Atlantic sharpnose Rhizoprionodon terraenovae, bonnethead Sphyrna tiburo, and blacktip Carcharhinus limbatus shark -was examined in the northwest Gulf of Mexico (GOM). A total of 601 sharks (305 Atlantic sharpnose, 239 bonnethead, and 57 blacktip) were collected over 2 yr from recreational anglers in Galveston, TX. All individuals had stomach contents examined and a subset (50 Atlantic sharpnose, 50 bonnethead, and 36 blacktip sharks) was analyzed for stable isot… Show more

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Cited by 40 publications
(30 citation statements)
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“…Further analysis of Atlantic Sharpnose Shark diets showed a reduction in dietary species richness from juveniles to adults. A large loss in the dietary contribution of crustaceans and squid in both regions suggests a refinement in diet with maturity, which is supported from previous findings (Bethea et al 2007, Plumlee andWells 2016). Minor differences between regions were observed at the teleost family level between the northwest and northcentral GOM.…”
Section: Discussionsupporting
confidence: 87%
See 1 more Smart Citation
“…Further analysis of Atlantic Sharpnose Shark diets showed a reduction in dietary species richness from juveniles to adults. A large loss in the dietary contribution of crustaceans and squid in both regions suggests a refinement in diet with maturity, which is supported from previous findings (Bethea et al 2007, Plumlee andWells 2016). Minor differences between regions were observed at the teleost family level between the northwest and northcentral GOM.…”
Section: Discussionsupporting
confidence: 87%
“…Dietary information can be found for both Atlantic Sharpnose Sharks and Bonnetheads, but is limited in the northwest GOM. Atlantic Sharpnose Shark diets have been reported from the northcentral and northeastern GOM and contain a mixture of crustaceans, squid, and fish with fish as the primary dietary component (Bethea et al 2004, Bethea et al 2006, Drymon et al 2012, Plumlee and Wells 2016. Bonnethead diets have also been evaluated in the northeastern GOM and northern Brazil with a specialized diet dominated by crustaceans, specifically Callinectes spp.…”
Section: Introductionmentioning
confidence: 99%
“…Finally, significant relationships between FL and plasma δ 15 N was detected, indicating potential resource shifting between size classes in Blacktip sharks and Sandbar sharks (Matich et al ., ). Although the sample size for Blacktip sharks is relatively small, these findings are corroborated by observations from the Gulf of Mexico (Plumlee and Wells, ). For Sandbar sharks, similar trends have been observed in South Carolina estuaries (Shiffman et al ., ).…”
Section: Discussionsupporting
confidence: 82%
“…Isotopic data generated from blood plasma suggest that different patterns of resource use are exhibited by shark species frequenting the First Coast food web. For example, Atlantic Sharpnose sharks, Blacktip sharks and Sandbar sharks exhibited a higher resource‐use variability between individuals ( i.e ., higher SEAc values), whereas Blacknose shark individuals behaved more similarly ( i.e ., smaller SEAc values, Plumlee and Wells, ). This study's data are consistent with findings of previous stomach content and stable isotope studies that illustrate a more generalist feeding strategy in Atlantic Sharpnose sharks and Sandbar sharks (Ellis and Musick, ; Hoffmayer and Parsons, ; Shaw et al ., ), which may promote the greater isotopic variability across individuals observed here.…”
Section: Discussionmentioning
confidence: 95%
“…benthic and lagoon‐dependent prey (expected lower δ 34 S values; Gajdzik et al, ). Although previously used to investigate the feeding ecology of coastal sharks (Plumlee and Wells ), these data represent the first application of δ 34 S data to understand reef shark ecology.…”
Section: Stable–isotope (δ13c δ15n and δ34s) Values Of Different Tismentioning
confidence: 97%