{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,28]],"date-time":"2026-09-28T04:57:14Z","timestamp":1790571434656,"version":"4.1.0"},"reference-count":76,"publisher":"Wiley","license":[{"start":{"date-parts":[[2026,9,27]],"date-time":"2026-09-27T00:00:00Z","timestamp":1790467200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,9,27]],"date-time":"2026-09-27T00:00:00Z","timestamp":1790467200000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Journal of Fish Biology"],"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>\n                    The shortfin mako (\n                    <jats:italic>Isurus oxyrinchus<\/jats:italic>\n                    ) is a fast\u2010swimming pelagic shark of global ecological and socioeconomic importance, yet it is relatively understudied in temperate eastern Australian waters. This study investigated the trophic ecology of mako sharks using stable isotope analysis (SIA) of nitrogen (\u03b4\n                    <jats:sup>15<\/jats:sup>\n                    N), carbon (\u03b4\n                    <jats:sup>13<\/jats:sup>\n                    C) and sulphur (\u03b4\n                    <jats:sup>34<\/jats:sup>\n                    S). White muscle tissue samples were obtained from captured during game fishing tournaments along the New South Wales coast between 2005 and 2025. Ontogenetic shifts in isotopic composition were observed across individuals. \u03b4\n                    <jats:sup>15<\/jats:sup>\n                    N values decreased with increasing body size, while \u03b4\n                    <jats:sup>13<\/jats:sup>\n                    C values increased with size, suggesting that larger sharks may feed more frequently on prey of lower trophic positions. In contrast, \u03b4\n                    <jats:sup>34<\/jats:sup>\n                    S values indicated mainly pelagic foraging across all size classes. Isotopic niche models revealed partial niche overlaps between size groups, with convergence in larger individuals, indicating shared resource use at maturity. Seasonal effects were weak, potentially reflecting sampling bias and the slow isotopic turnover rate of shark muscle. At the population level, their ecological role appears as a generalist, although individual specialization may occur. These findings demonstrate that ontogenetic variation and spatially variable foraging behaviour should be considered in fisheries management. In particular, the apparent reliance of larger individuals on coastal prey suggests that they may be more vulnerable to recreational fisheries than previously assumed. This study provides the first sulphur\u2010inclusive stable isotope analysis of\n                    <jats:italic>I.\u2009oxyrinchus<\/jats:italic>\n                    and offers a species\u2010specific trophic perspective for temperate eastern Australia. It highlights the importance of integrating stable isotope data with tagging studies, prey sampling and stomach content analyses to better resolve trophic pathways. Such integrative approaches will support ecosystem\u2010based fisheries management, help reduce bycatch risks, and strengthen conservation strategies for this endangered species.\n                  <\/jats:p>","DOI":"10.1111\/jfb.70667","type":"journal-article","created":{"date-parts":[[2026,9,28]],"date-time":"2026-09-28T04:51:00Z","timestamp":1790571060000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Ontogenetic and spatial variation in the trophic ecology of the shortfin mako shark (\n                    <i>Isurus oxyrinchus<\/i>\n                    ) in temperate eastern Australia"],"prefix":"10.1111","author":[{"ORCID":"https:\/\/orcid.org\/0009-0007-2695-4880","authenticated-orcid":false,"given":"Ma\u00eblle","family":"Devillebichot","sequence":"first","affiliation":[{"name":"School of Natural Sciences Macquarie University, Wallumattagal Campus  Sydney New South Wales Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3627-4508","authenticated-orcid":false,"given":"Jane E.","family":"Williamson","sequence":"additional","affiliation":[{"name":"School of Natural Sciences Macquarie University, Wallumattagal Campus  Sydney New South Wales Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6911-272X","authenticated-orcid":false,"given":"Julian G.","family":"Pepperell","sequence":"additional","affiliation":[{"name":"Pepperell Research and Consulting Pty Ltd  Noosaville Queensland Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2590-0887","authenticated-orcid":false,"given":"Tristan A.","family":"Guillemin","sequence":"additional","affiliation":[{"name":"School of Natural Sciences Macquarie University, Wallumattagal Campus  Sydney New South Wales Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,9,27]]},"reference":[{"key":"e_1_2_11_2_1","doi-asserted-by":"publisher","DOI":"10.3354\/meps09395"},{"key":"e_1_2_11_3_1","first-page":"119","volume-title":"Quantifying diets of wildlife and fish: Practical and applied methods","author":"Abrantes K. 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