Ontogenetic diet shifts and prey selection in nursery bound lemon sharks, Negaprion brevirostris, indicate a flexible foraging tactic
Ontogenetic variations in shark diet are often qualitatively inferred from dietary analysis and hindered by high levels of unidentified prey or small sample sizes. This study focused on nursery bound lemon sharks ( Negaprion brevirostris , n = 396), enabling some control over the confounding variab...
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| Veröffentlicht in: | Environmental biology of fishes 2012-09, Vol.95 (1), p.115-126 |
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| creator | Newman, Steven P. Handy, Richard D. Gruber, Samuel H. |
| description | Ontogenetic variations in shark diet are often qualitatively inferred from dietary analysis and hindered by high levels of unidentified prey or small sample sizes. This study focused on nursery bound lemon sharks (
Negaprion brevirostris
,
n
= 396), enabling some control over the confounding variables of prey choice associated with ontogeny. Nursery bound lemon sharks exhibited weak ontogenetic variation in dietary composition with high levels of dietary overlap. Variation in prey preference of lemon sharks with ontogeny was complex, but revealed a continuous shift from predominantly opportunistic benthic foraging as neonates to more selective piscivory with increasing shark size while in the nursery. Lemon sharks demonstrated a discrete ontogenetic shift in the number of prey consumed and stomach content weight (Kruskal-Wallis tests
p
|
| doi_str_mv | 10.1007/s10641-011-9828-9 |
| format | Article |
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Negaprion brevirostris
,
n
= 396), enabling some control over the confounding variables of prey choice associated with ontogeny. Nursery bound lemon sharks exhibited weak ontogenetic variation in dietary composition with high levels of dietary overlap. Variation in prey preference of lemon sharks with ontogeny was complex, but revealed a continuous shift from predominantly opportunistic benthic foraging as neonates to more selective piscivory with increasing shark size while in the nursery. Lemon sharks demonstrated a discrete ontogenetic shift in the number of prey consumed and stomach content weight (Kruskal-Wallis tests
p
< 0.01), as well as prey size (ANOVA,
p
< 0.001). All sizes of sharks exhibited positive size selection of prey (Mann–Whitney U tests,
p
< 0.01). However, the lack of size preference by all but the largest lemon sharks for their major prey (yellowfin mojarra,
Gerres cinereus
), suggests neonate sharks, while capable of occasionally foraging on large prey, are relatively inept opportunistic foragers. This was evident in high diet breadth, low diversity of consumed prey and lower trophic level than larger sharks. This study represents the first quantitative analysis of ontogenetic variation in prey preference and size selection in sharks, indicating a flexible foraging tactic in lemon sharks and the importance of hunting ability and predator size in prey choice.</description><identifier>ISSN: 0378-1909</identifier><identifier>EISSN: 1573-5133</identifier><identifier>DOI: 10.1007/s10641-011-9828-9</identifier><identifier>CODEN: EBFID3</identifier><language>eng</language><publisher>Dordrecht: Springer Netherlands</publisher><subject>Agnatha. Pisces ; Animal and plant ecology ; Animal cognition ; Animal Systematics/Taxonomy/Biogeography ; Animal, plant and microbial ecology ; Animals ; Autoecology ; Biological and medical sciences ; Biomedical and Life Sciences ; Diet ; Environment ; Freshwater & Marine Ecology ; Fruits ; Fundamental and applied biological sciences. Psychology ; General aspects ; Gerres cinereus ; Life Sciences ; Marine ; Marine biology ; Nature Conservation ; Negaprion brevirostris ; Neonates ; Population genetics ; Predation ; Prey ; Prey selection ; Sharks ; Trophic levels ; Variance analysis ; Vertebrata ; Vertebrates: general zoology, morphology, phylogeny, systematics, cytogenetics, geographical distribution ; Zoology</subject><ispartof>Environmental biology of fishes, 2012-09, Vol.95 (1), p.115-126</ispartof><rights>Springer Science+Business Media B.V. 2011</rights><rights>2014 INIST-CNRS</rights><rights>Springer Science+Business Media B.V. 2012</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c379t-9e36c1dffed6c74ca79188762e607467ca76096fb2a338beb3dadd30e5d65d723</citedby><cites>FETCH-LOGICAL-c379t-9e36c1dffed6c74ca79188762e607467ca76096fb2a338beb3dadd30e5d65d723</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s10641-011-9828-9$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s10641-011-9828-9$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>309,310,314,776,780,785,786,23909,23910,25118,27901,27902,41464,42533,51294</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=26318230$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Newman, Steven P.</creatorcontrib><creatorcontrib>Handy, Richard D.</creatorcontrib><creatorcontrib>Gruber, Samuel H.</creatorcontrib><title>Ontogenetic diet shifts and prey selection in nursery bound lemon sharks, Negaprion brevirostris, indicate a flexible foraging tactic</title><title>Environmental biology of fishes</title><addtitle>Environ Biol Fish</addtitle><description>Ontogenetic variations in shark diet are often qualitatively inferred from dietary analysis and hindered by high levels of unidentified prey or small sample sizes. This study focused on nursery bound lemon sharks (
Negaprion brevirostris
,
n
= 396), enabling some control over the confounding variables of prey choice associated with ontogeny. Nursery bound lemon sharks exhibited weak ontogenetic variation in dietary composition with high levels of dietary overlap. Variation in prey preference of lemon sharks with ontogeny was complex, but revealed a continuous shift from predominantly opportunistic benthic foraging as neonates to more selective piscivory with increasing shark size while in the nursery. Lemon sharks demonstrated a discrete ontogenetic shift in the number of prey consumed and stomach content weight (Kruskal-Wallis tests
p
< 0.01), as well as prey size (ANOVA,
p
< 0.001). All sizes of sharks exhibited positive size selection of prey (Mann–Whitney U tests,
p
< 0.01). However, the lack of size preference by all but the largest lemon sharks for their major prey (yellowfin mojarra,
Gerres cinereus
), suggests neonate sharks, while capable of occasionally foraging on large prey, are relatively inept opportunistic foragers. This was evident in high diet breadth, low diversity of consumed prey and lower trophic level than larger sharks. This study represents the first quantitative analysis of ontogenetic variation in prey preference and size selection in sharks, indicating a flexible foraging tactic in lemon sharks and the importance of hunting ability and predator size in prey choice.</description><subject>Agnatha. Pisces</subject><subject>Animal and plant ecology</subject><subject>Animal cognition</subject><subject>Animal Systematics/Taxonomy/Biogeography</subject><subject>Animal, plant and microbial ecology</subject><subject>Animals</subject><subject>Autoecology</subject><subject>Biological and medical sciences</subject><subject>Biomedical and Life Sciences</subject><subject>Diet</subject><subject>Environment</subject><subject>Freshwater & Marine Ecology</subject><subject>Fruits</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>General aspects</subject><subject>Gerres cinereus</subject><subject>Life Sciences</subject><subject>Marine</subject><subject>Marine biology</subject><subject>Nature Conservation</subject><subject>Negaprion brevirostris</subject><subject>Neonates</subject><subject>Population genetics</subject><subject>Predation</subject><subject>Prey</subject><subject>Prey selection</subject><subject>Sharks</subject><subject>Trophic levels</subject><subject>Variance analysis</subject><subject>Vertebrata</subject><subject>Vertebrates: general zoology, morphology, phylogeny, systematics, cytogenetics, geographical distribution</subject><subject>Zoology</subject><issn>0378-1909</issn><issn>1573-5133</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><sourceid>BENPR</sourceid><recordid>eNp1kc9q3DAQxkVpINukD5CboAR6qFv9WUvWsYQ0LYTmkp6NLI0cpV55q5FD9wHy3tGyIZRATwPf_OZjZj5Czjj7zBnTX5AzteYN47wxnega84aseKtl03Ip35IVk7pruGHmmLxDvGeMGb3WK_J4k8o8QoISHfURCsW7GApSmzzdZthRhAlciXOiMdG0ZIS8o8O81P4Emyrjnc2_8RP9CaPd5j04ZHiIecaSY9Vj8tHZAtTSMMHfOExAw5ztGNNIi63e7pQcBTshvH-uJ-TXt8vbi-_N9c3Vj4uv142T2pTGgFSO-xDAK6fXzmrDu04rAYrptdJVUMyoMAgrZTfAIL31XjJovWq9FvKEfDz4bvP8ZwEs_Saig2myCeYF-_pEw02nBK_oh1fo_bzkVLerlNRCGd3KSvED5eq5mCH09QMbm3cV6vfB9Idg-hpMvw-mN3Xm_NnZorNTyDa5iC-DQkneCckqJw4c1lYaIf-7wf_MnwAr25-q</recordid><startdate>20120901</startdate><enddate>20120901</enddate><creator>Newman, Steven P.</creator><creator>Handy, Richard D.</creator><creator>Gruber, Samuel H.</creator><general>Springer Netherlands</general><general>Springer</general><general>Springer Nature B.V</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7QG</scope><scope>7QH</scope><scope>7SN</scope><scope>7ST</scope><scope>7TN</scope><scope>7UA</scope><scope>88A</scope><scope>8AO</scope><scope>8FE</scope><scope>8FH</scope><scope>8FK</scope><scope>ABUWG</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>ATCPS</scope><scope>AZQEC</scope><scope>BBNVY</scope><scope>BENPR</scope><scope>BHPHI</scope><scope>BKSAR</scope><scope>C1K</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>F1W</scope><scope>GNUQQ</scope><scope>H95</scope><scope>HCIFZ</scope><scope>L.G</scope><scope>LK8</scope><scope>M7P</scope><scope>PATMY</scope><scope>PCBAR</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PYCSY</scope><scope>SOI</scope></search><sort><creationdate>20120901</creationdate><title>Ontogenetic diet shifts and prey selection in nursery bound lemon sharks, Negaprion brevirostris, indicate a flexible foraging tactic</title><author>Newman, Steven P. ; Handy, Richard D. ; Gruber, Samuel H.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c379t-9e36c1dffed6c74ca79188762e607467ca76096fb2a338beb3dadd30e5d65d723</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Agnatha. Pisces</topic><topic>Animal and plant ecology</topic><topic>Animal cognition</topic><topic>Animal Systematics/Taxonomy/Biogeography</topic><topic>Animal, plant and microbial ecology</topic><topic>Animals</topic><topic>Autoecology</topic><topic>Biological and medical sciences</topic><topic>Biomedical and Life Sciences</topic><topic>Diet</topic><topic>Environment</topic><topic>Freshwater & Marine Ecology</topic><topic>Fruits</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>General aspects</topic><topic>Gerres cinereus</topic><topic>Life Sciences</topic><topic>Marine</topic><topic>Marine biology</topic><topic>Nature Conservation</topic><topic>Negaprion brevirostris</topic><topic>Neonates</topic><topic>Population genetics</topic><topic>Predation</topic><topic>Prey</topic><topic>Prey selection</topic><topic>Sharks</topic><topic>Trophic levels</topic><topic>Variance analysis</topic><topic>Vertebrata</topic><topic>Vertebrates: general zoology, morphology, phylogeny, systematics, cytogenetics, geographical distribution</topic><topic>Zoology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Newman, Steven P.</creatorcontrib><creatorcontrib>Handy, Richard D.</creatorcontrib><creatorcontrib>Gruber, Samuel H.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Animal Behavior Abstracts</collection><collection>Aqualine</collection><collection>Ecology Abstracts</collection><collection>Environment Abstracts</collection><collection>Oceanic Abstracts</collection><collection>Water Resources Abstracts</collection><collection>Biology Database (Alumni Edition)</collection><collection>ProQuest Pharma Collection</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Natural Science Collection</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest One Sustainability</collection><collection>ProQuest Central UK/Ireland</collection><collection>Agricultural & Environmental Science Collection</collection><collection>ProQuest Central Essentials</collection><collection>Biological Science Collection</collection><collection>ProQuest Central</collection><collection>Natural Science Collection</collection><collection>Earth, Atmospheric & Aquatic Science Collection</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>ProQuest Central Student</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 1: Biological Sciences & Living Resources</collection><collection>SciTech Premium Collection</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>ProQuest Biological Science Collection</collection><collection>Biological Science Database</collection><collection>Environmental Science Database</collection><collection>Earth, Atmospheric & Aquatic Science Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>Environmental Science Collection</collection><collection>Environment Abstracts</collection><jtitle>Environmental biology of fishes</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Newman, Steven P.</au><au>Handy, Richard D.</au><au>Gruber, Samuel H.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Ontogenetic diet shifts and prey selection in nursery bound lemon sharks, Negaprion brevirostris, indicate a flexible foraging tactic</atitle><jtitle>Environmental biology of fishes</jtitle><stitle>Environ Biol Fish</stitle><date>2012-09-01</date><risdate>2012</risdate><volume>95</volume><issue>1</issue><spage>115</spage><epage>126</epage><pages>115-126</pages><issn>0378-1909</issn><eissn>1573-5133</eissn><coden>EBFID3</coden><abstract>Ontogenetic variations in shark diet are often qualitatively inferred from dietary analysis and hindered by high levels of unidentified prey or small sample sizes. This study focused on nursery bound lemon sharks (
Negaprion brevirostris
,
n
= 396), enabling some control over the confounding variables of prey choice associated with ontogeny. Nursery bound lemon sharks exhibited weak ontogenetic variation in dietary composition with high levels of dietary overlap. Variation in prey preference of lemon sharks with ontogeny was complex, but revealed a continuous shift from predominantly opportunistic benthic foraging as neonates to more selective piscivory with increasing shark size while in the nursery. Lemon sharks demonstrated a discrete ontogenetic shift in the number of prey consumed and stomach content weight (Kruskal-Wallis tests
p
< 0.01), as well as prey size (ANOVA,
p
< 0.001). All sizes of sharks exhibited positive size selection of prey (Mann–Whitney U tests,
p
< 0.01). However, the lack of size preference by all but the largest lemon sharks for their major prey (yellowfin mojarra,
Gerres cinereus
), suggests neonate sharks, while capable of occasionally foraging on large prey, are relatively inept opportunistic foragers. This was evident in high diet breadth, low diversity of consumed prey and lower trophic level than larger sharks. This study represents the first quantitative analysis of ontogenetic variation in prey preference and size selection in sharks, indicating a flexible foraging tactic in lemon sharks and the importance of hunting ability and predator size in prey choice.</abstract><cop>Dordrecht</cop><pub>Springer Netherlands</pub><doi>10.1007/s10641-011-9828-9</doi><tpages>12</tpages></addata></record> |
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| identifier | ISSN: 0378-1909 |
| ispartof | Environmental biology of fishes, 2012-09, Vol.95 (1), p.115-126 |
| issn | 0378-1909 1573-5133 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_1069198621 |
| source | Springer Nature - Complete Springer Journals |
| subjects | Agnatha. Pisces Animal and plant ecology Animal cognition Animal Systematics/Taxonomy/Biogeography Animal, plant and microbial ecology Animals Autoecology Biological and medical sciences Biomedical and Life Sciences Diet Environment Freshwater & Marine Ecology Fruits Fundamental and applied biological sciences. Psychology General aspects Gerres cinereus Life Sciences Marine Marine biology Nature Conservation Negaprion brevirostris Neonates Population genetics Predation Prey Prey selection Sharks Trophic levels Variance analysis Vertebrata Vertebrates: general zoology, morphology, phylogeny, systematics, cytogenetics, geographical distribution Zoology |
| title | Ontogenetic diet shifts and prey selection in nursery bound lemon sharks, Negaprion brevirostris, indicate a flexible foraging tactic |
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