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Results of SIAR mixing models applied with different TEFs, showing the estimated proportions (with 50%, 75% and 95% confidence intervals) of each source/prey in the diet of meagre (size range = 36–130 cm TL) collected in 2010 in the Bay of Biscay and analysed for SIA. Data corrected from the effect of ethanol preservation were used (see text and Supplemental Material). (A) Models applied on all individuals analysed for SIA (N = 21); (B) Models applied on large individuals only (>60 cm; N = 14); Models applied on medium-sized individuals only (36–60 cm TL; N = 7). Prey groups (Spitz et al., 2013): 1 = Pelagic fish; 2 = Demersal and benthic fish; 3 = Coastal fish; 4 = Cephalopods; 5 = Crustaceans. TEFs: Model 1 = 1.7 ± 1.1‰ for δ13C and 3.2 ± 1.3‰ for δ15N (Sweeting et al., 2007a,b); Model 2 = 2.5 ± 0.1‰ for δ13C and 3.3 ± 0.2‰ for δ15N (Pinnegar and Polunin 1999).
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