USAP-DC

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A newer version exists for this dataset. Click here to go to its landing page. Weddell seal iron dynamics and oxygen stores across lactation Data DOI: https://doi.org/10.15784/601575 Cite as Shero, M. (2022) "Weddell seal iron dynamics and oxygen stores across lactation" U.S. Antarctic Program (USAP) Data Center. doi: https://doi.org/10.15784/601575. AMD - DIF Record(s) USAP-1246463_1 Abstract The profound impacts that maternal provisioning of finite energy resources has on offspring survival have been extensively studied across mammals. However, in addition to calories, we tested whether high hemoprotein concentrations in diving mammals necessitates exceptional female-to-pup iron transfer. To answer this question adult female Weddell seals (Leptonychotes weddellii) were handled across the austral summer. This included post-partum females during lactation and post-weaning. To demonstrate that any observed changes in iron dynamics were due to lactation, equivalent skip-breeding females (i.e., that did not produce a pup) were also handled. We measured numerous indices of iron mobilization (ferritin, serum iron, total-iron-binding-capacity, transferrin saturation, milk iron concentration), hemoprotein concentrations, and oxygen stores. Creator(s): Shero, Michelle Date Created: 2022-05-26 Repository: USAP-DC (current) License: Creative Commons Attribution Only v4.0 Generic [CC BY 4.0] Spatial Extent(s) West: 162, East: 168, South: -79, North: -75 Temporal Extent(s) Start: 2010-01-01 - End: 2017-02-28 Award(s) NSF 1246463 Version: 1 Related Project(s) The Cost of A New Fur Coat: Interactions between Molt and Reproduction in Weddell Seals Keywords Aerobic Antarctica Dive Capacity Iron McMurdo Sound Weddell Seal