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Retrospective characterization of ontogenetic shifts in killer whale diets via δ<sup>13</sup>C and δ<sup>15</sup>N analysis of teeth

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Retrospective characterization of ontogenetic shifts in killer whale diets via ??13C and ??15N analysis of teeth; 2009; Article; Journal; Marine Ecology Progress Series; Newsome, S. D.; Etnier, M. A.; Monson, D. H.; Fogel, M. L.

Summary

Metabolically inert, accretionary structures such as the dentin growth layers in teeth provide a life history record of individual diet with near-annual resolution. We constructed ontogenetic ??13C and ??15N profiles by analyzing tooth dentin growth layers from 13 individual killer whales Orcinus orca collected in the eastern northeast Pacific Ocean between 1961 and 2003. The individuals sampled were 6 to 52 yr old, representing 2 ecotypes-resident and transient - collected across ???25?? of latitude. The average isotopic values of transient individuals (n = 10) are consistent with a reliance on mammalian prey, while the average isotopic values of residents (n = 3) are consistent with piscivory. Regardless of ecotype, most individuals [...]

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Harvested on Tue Mar 31 04:25:33 MDT 2015 from MODS XML Service

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Type Scheme Key
local-index unknown 70032462
local-pk unknown 70032462
doi http://www.loc.gov/standards/mods/mods-outline-3-5.html#identifier doi:10.3354/meps07747
series unknown Marine Ecology Progress Series

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journalMarine Ecology Progress Series
parts
typevolume
value374
languageEnglish
citationTypeArticle

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