Probing dietary change of the Kwädąy Dän Ts'ìnchį individual, an ancient glacier body from British Columbia: I. Complementary use of marine lipid biomarker and carbon isotope signatures as novel indicators of a marine diet

Coprolites of Late Triassic carnivorous vertebrates from Poland: An integrative approach

“…They are most possibly degradation 747 products of chlorophyll (e.g. Rontani and Volkmann, 2003), but what is noteworthy, both these 748 compounds are constituents of marine and fresh-water fish oils (Corr et al, 2008). 749 Surprisingly, despite their old age, the coprolites contain sterols.…”

Probing dietary change of the Kwädąy Dän Ts'ìnchį individual, an ancient glacier body from British Columbia: II. Deconvoluting whole skin and bone collagen δ13C values via carbon isotope analysis of individual amino acids

“…The isotopic composition along a strand of preserved hair provided a less robust dietary signature due to its fragmentary nature, pointing towards a possible shift towards a more terrestrial/freshwater dietary profile in the last year of life (Richards et al, 2007). Both the molecular and carbon isotopic composition of individual lipids extracted from skin and bone samples indicated a diet dominated by marine foods (bone lipids) in the last year of life followed by a transition to a more terrestrial diet in the very latter period (skin lipids; Corr et al, 2008). In order to validate this conclusion, the objective here was to concentrate on protein amino acids in the bone and skin, as a further means of comparing long-term (bone: 10-30 years; Rucklidge et al, 1992) and short-term diet (skin: months; Gerber and Altman, 1960).…”

Compound‐specific Stable Isotopes in Organic Residue Analysis in Archaeology

“…This is mainly due to the apparently low survival rates of bone fatty acids in the archaeological record; fatty acids only seem to be preserved in significant abundances under exceptional burial environments, for example arid, waterlogged and frozen sites (Evershed and Connolly 1987;Mayer et al 1997;Copley et al 2004;Corr et al 2008). However, the analysis of fatty acids from archaeological bone has been much less explored .…”

“…This is mainly due to the apparently low survival rates of bone fatty acids in the archaeological record; fatty acids only seem to be preserved in significant abundances under exceptional burial environments, for example arid, waterlogged and frozen sites (Evershed and Connolly 1987;Mayer et al 1997;Copley et al 2004;Corr et al 2008). In a recent study (Corr et al 2008(Corr et al , 2009) the male remains of a preserved ice body recovered from a retreating glacier in the Tatshenshini-Alsek Park, British Columbia in August 1999 were investigated. Studies on rats and pigs raised on isotopically controlled diets have shown that bone fatty acid d 13 C values are 13 C-depleted by up to 3.4 % with respect to whole diet (Jim 2000;Jim et al 2001Jim et al , 2003bHowland et al 2003).…”

“…mono-, di-and triacylglycerols, which are rather non-specific biomakers and thus present considerable challenges to identifying their origins (Condamin et al 1975;Passi et al 1981;Rottländer and Schlichtherle 1983;Patrick et al 1985;Rottlander 1990;Evershed et al, 1991). Moreover, the co-occurring lipid constitutents of skeletal and soft tissues hold considerable untapped potential to enhance studies of ancient diet (Stott and Evershed 1996;Howland et al 2003;Jim et al 2004;Corr et al 2008). While collagen is widely exploited for its bulk stable isotope signature in the reconstruction of ancient human diet there is now considerable evidence that additional information exists in its constituent amino acids (Tuross et al 1998;Corr et al 2005Corr et al , 2009Fogel and Tuross 2003;Jim et al, 2006).…”