Evaluating quantitative fatty acid signature analysis (QFASA) using harbour seals Phoca vitulina richardsi in captive feeding studies

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Harbor Seal Diet in Northern Puget Sound: Implications for the Recovery of Depressed Fish Stocks (2012, background): “…are increasingly being used to assess the diets of a variety of marine predators, including harbor seals, and can yield different answers than traditional techniques, such as scat and stomach content analyses (Smith et al. 1996, Tollit et al. 2006, Nordstrom et al. 2008, Deagle et al. 2009).”
Tracing aquatic food webs using fatty acids: from qualitative indicators to quantitative determination (2009, background): “Despite issues concerning its further advancement, QFASA has now been successfully validated for a variety of predators including pinnipeds, mink, and seabirds (Iverson et al. 2004, 2007 ; Cooper 2004 ; Cooper et al. 2005 ; Nordstrom et al. 2008 ) . Since most validation studies are performed withi”
Methods of estimating marine mammal diets: A review of validation experiments and sources of bias and uncertainty (2012, background): “With fatty acids or stable isotope ratios, each sample would represent more meals because the integration of prey fatty acids and isotope into tissues occurs over periods of perhaps several months (Iverson et al. 2004, Nordstrom et al. 2008).”