Stable isotope analyses of feather amino acids identify penguin migration strategies at ocean basin scales
Polito, Michael J.
Hinke, Jefferson T.
Houghton, Leah A.
Thorrold, Simon R.
MetadataShow full item record
Identifying the at-sea distribution of wide ranging 20 marine predators is critical to understanding their ecology. Advances in electronic tracking devices and intrinsic biogeochemical markers have greatly improved our ability to track animal movements on ocean-wide scales. Here we show that, in combination with direct tracking, stable carbon isotope analysis of essential amino acids in tail feathers provides the ability to track the movement patterns of two, wide-ranging penguin species over ocean basin scales. In addition, we use this isotopic approach across multiple breeding colonies in the Scotia Arc to evaluate migration trends at a regional scale that would be logistically challenging using direct tracking alone.
Author Posting. © The Author(s), 2017. This is the author's version of the work. It is posted here under a nonexclusive, irrevocable, paid-up, worldwide license granted to WHOI. It is made available for personal use, not for redistribution. The definitive version was published in Biology Letters 13 (2017): 20170241, doi:10.1098/rsbl.2017.0241.
Suggested CitationPreprint: Polito, Michael J., Hinke, Jefferson T., Hart, Tom, Santos, Mercedes, Houghton, Leah A., Thorrold, Simon R., "Stable isotope analyses of feather amino acids identify penguin migration strategies at ocean basin scales", 2017-07, https://doi.org/10.1098/rsbl.2017.0241, https://hdl.handle.net/1912/9186
Showing items related by title, author, creator and subject.
Spatial and isotopic niche partitioning during winter in chinstrap and Adélie penguins from the South Shetland Islands Hinke, Jefferson T.; Polito, Michael J.; Goebel, Michael E.; Jarvis, Sharon; Reiss, Christian S.; Thorrold, Simon R.; Trivelpiece, Wayne Z.; Watters, George M. (Ecological Society of America, 2015-07-29)Closely related species with similar ecological requirements should exhibit segregation along spatial, temporal, or trophic niche axes to limit the degree of competitive overlap. For migratory marine organisms like seabirds, ...
Experimental assessment of the macroalgae Ascophyllum nodosum and Fucus vesiculosus for monitoring N sources at different time-scales using stable isotope composition Viana, Ines G.; Bode, Antonio; Bartholomew, Megan; Valiela, Ivan (2015-01)Stable isotope composition of brown macroalgae has been widely used to monitor N loading during the last decades but some of the required assumptions when using them to detect anthropogenic inputs remain untested. In this ...
Identification of chemoautotrophic microorganisms from a diffuse flow hydrothermal vent at EPR 9° North using 13C DNA Stable Isotope Probing and Catalyzed Activated Reporter Deposition-Fluorescence in situ Hybridization Richberg, Kevin P. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2010-09)At deep‐sea hydrothermal vents chemolithoautotrophic microbes mediate the transfer of geothermal chemical energy to higher trophic levels. To better understand these underlying processes and the organisms catalyzing them, ...