https://nova.newcastle.edu.au/vital/access/ /manager/Index ${session.getAttribute("locale")} 5 Shifts in the incidence of shark bites and efficacy of beach-focussed mitigation in Australia https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:54208 Tue 13 Feb 2024 11:52:29 AEDT ]]> Integrating isotopic and nutritional niches reveals multiple dimensions of individual diet specialisation in a marine apex predator https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:50253 Tue 11 Jul 2023 16:29:13 AEST ]]> Overcoming multi-year impacts of maternal isotope signatures using multi-tracers and fast turnover tissues in juvenile sharks https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:39471 15N, δ¹³C and δ³⁴S) to stable isotope signatures in juvenile bull sharks (Carcharhinus leucas) up to 6.5 years post parturition. We found that maternal provisioning was detectable for up to 3.5 years after birth in muscle but only detectable in young-of-the-year for liver. Inclusion of sulphur revealed when maternal signatures disappeared from low-turnover tissue, while also identifying the spatial and trophic ecology patterns from fast-turnover tissue. These results reveal the importance of sampling fast turnover tissues to study the trophic ecology of juvenile elasmobranchs, and how the use of only δ¹⁵N and δ¹³C isotopes is likely to make maternal patterns more difficult to detect.]]> Thu 09 Jun 2022 09:43:28 AEST ]]> Trophic niche of Australian cownose rays (Rhinoptera neglecta) and whitespotted eagle rays (Aetobatus ocellatus) along the east coast of Australia https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:48196 Sat 11 Mar 2023 12:30:29 AEDT ]]> Localized zinc distribution in shark vertebrae suggests differential deposition during ontogeny and across vertebral structures https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:32832 intermedialis and was generally detected at levels an order of magnitude lower in the corpus calcareum,. In most species, zinc concentrations were higher pre-birth mark, indicating a high rate of pre-natal zinc deposition. These results suggest there are inter-specific differences in elemental deposition within vertebrae. Since the deposition of zinc is physiologically-driven, these differences suggest that the processes of growth and deposition are potentially different in the intermedialis and corpus calcareum, and that caution should be taken when extrapolating information such as annual growth bands from one structure to the other. Together these results suggest that the high inter-specific variation in vertebral zinc deposition and associated physiologies may explain the varying effectiveness of ageing methodologies applied to elasmobranch vertebrae.]]> Mon 23 Sep 2019 12:27:57 AEST ]]>