QUANTIFYING ERRORS ASSOCIATED WITH USING PREY SKELETAL STRUCTURES FROM FECAL SAMPLES TO DETERMINE THE DIET OF STELLER'S SEA LION (EUMETOPIAS JUBATUS)

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Stable isotope analysis reveals pelagic foraging by the Southern sea lion in central Chile (2007, methodology): “The most common method used to reconstruct diets of pinnipeds is the identification of prey remains collected from stomachs, intestines, scats and regurgitations (Tollit et al., 2003).”
DIETARY ANALYSIS FROM FECAL SAMPLES: HOW MANY SCATS ARE ENOUGH? (2005, background): “This has been demonstrated for some species through captive studies that have detected all experimentally fed prey in scats, despite varying widely in their susceptibility to digestion (e.g., Cottrell and Trites 2002; Tollit et al. 2003).”
Seasonal availability of abundant, energy-rich prey influences the abundance and diet of a marine predator, the Steller sea lion Eumetopias jubatus (2006, background): “In addition, captive studies have shown that pollock remains occur in significantly more sea lion scats than other prey species and recovery rates for pollock are 3-fold that of herring (Tollit et al. 2003).”
Evaluating quantitative fatty acid signature analysis (QFASA) using harbour seals Phoca vitulina richardsi in captive feeding studies (2008, background): “There is also debate as to how to enumerate recovered hard parts and subsequently reconstruct past diet (Laake et al. 2002, Tollit et al. 2003, Trites & Joy 2005).”