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Side of the body (left versus right) and biopsy location (dorsal, anterior, ventral, and posterior) did marginally affect the isotopic composition of \u03b4\n                      <jats:sup>15<\/jats:sup>\n                      N but not \u03b4\n                      <jats:sup>13<\/jats:sup>\n                      C. Pregnancy had a significant effect on both \u03b4\n                      <jats:sup>13<\/jats:sup>\n                      C and \u03b4\n                      <jats:sup>15<\/jats:sup>\n                      N, where pregnant females were depleted in both when compared to non\u2010pregnant females and males.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>\n                      These results indicate that isotopic signatures are influenced by multiple endogenous and exogenous factors and emphasize value in accounting for intra\u2010individual variability and pregnancy status within a sampled population. Placed within an ecological context, the endogenous variability in \u03b4\n                      <jats:sup>13<\/jats:sup>\n                      C observed here may be informative for future isotopic analyses.\n                    <\/jats:p>\n                  <\/jats:sec>","DOI":"10.1002\/rcm.9746","type":"journal-article","created":{"date-parts":[[2024,4,5]],"date-time":"2024-04-05T01:59:28Z","timestamp":1712282368000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["The influence of biopsy site and pregnancy on stable isotope ratios in humpback whale skin"],"prefix":"10.1002","volume":"38","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2663-7010","authenticated-orcid":false,"given":"Devin C.","family":"Fraleigh","sequence":"first","affiliation":[{"name":"Center for Marine Science University of North Carolina Wilmington  Wilmington North Carolina USA"},{"name":"Department of Oceanography Dalhousie University  Halifax Nova Scotia Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Logan J.","family":"Pallin","sequence":"additional","affiliation":[{"name":"Department of Ecology and Evolutionary Biology University of California Santa Cruz  Santa Cruz California USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ari S.","family":"Friedlaender","sequence":"additional","affiliation":[{"name":"Institute for Marine Science University of California Santa Cruz  Santa Cruz California USA"},{"name":"Department of Ocean Sciences University of California Santa Cruz  Santa Cruz California USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jay","family":"Barlow","sequence":"additional","affiliation":[{"name":"NOAA Southwest Fisheries Science Center  San Diego California USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Annette E.","family":"Henry","sequence":"additional","affiliation":[{"name":"NOAA Southwest Fisheries Science Center  San Diego California USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Danielle M.","family":"Waples","sequence":"additional","affiliation":[{"name":"Duke University Marine Laboratory  Beaufort North Carolina USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Teris","family":"Oglesby","sequence":"additional","affiliation":[{"name":"Duke University Marine Laboratory  Beaufort North Carolina USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alyson H.","family":"Fleming","sequence":"additional","affiliation":[{"name":"Center for Marine Science University of North Carolina Wilmington  Wilmington North Carolina USA"},{"name":"Department of Forest &amp; 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