Table 2. Estimated proportional prey inputs from Bayesian isotope mixing model (MixSir) of trophic groups (TG) to diets of nine predator species and to diets of trophic groups as a whole (TG3-5). Values reported are for 1×10⁷ iterations and priors based on wasp-waist assumptions [1 3 1 1], as discussed in methods.

		Estimated proportional prey inputs
		Trophic Group 2		Trophic Group 3		Trophic Group 4		Trophic Group 5
Species	Code	Median	95% CI	Median	95% CI	Median	95% CI	Median	95% CI
S. japonicus	PM	89	83 – 95	7	3 – 14	1	0 – 4	0	0 – 4
P. glauca	BLSK	69	52 – 81	23	8 – 43	4	0 – 13	3	0 – 10
T. alalunga	ALB	75	70 – 79	12	5 – 23	12	4 – 18	1	0 – 4
T. orientalis	PB	43	36 – 49	32	21 – 42	17	6 – 27	9	2 – 17
T. albacares	YFT	52	46 – 57	5	2 – 16	41	10 – 45	2	0 – 8
S. chiliensis	BON	11	1 – 30	68	24 – 86	15	2 – 44	4	0 – 15
S. lalandi	YT	3	0 – 9	76	65 – 86	12	1 – 28	7	1 – 17
X. gladius	SWD	1	0 – 5	96	92 – 99	1	0 – 4	1	0 – 4
I. oxyrinchus	MAKO	4	0 – 14	85	73 – 94	5	0 – 15	4	0 – 12
Trophic Group (TG)
5	MAKO, YT, SWD, BON, YFT, PB, STM, LOL, DG	23	19 – 29	63	57 – 69	5	0 – 14	8	1 – 13
4	BLSK, ABRL, SLB, ALB, FM, OPA, PM, ONYC	79	74 – 84	16	8 – 24	3	0 – 9	1	0 – 5
3	SARD, EELPT, JM, SEB, ARGO, DBB, SAUR, SEN, MYCT, GON, RC	99	98 – 99	1	0 – 1	0	0 – 1	0	0 – 1