Table 1. Stomach content composition of G. cuvier caught in the KwaZulu-Natal shark nets and drumlines, 1983–2014.

Results are summarized for eight functional prey groups and presented by frequency of occurrence (%F), by mass (%M), by number (N%) and index of relative importance (%IRI). Totals represent number of non-empty stomachs (F), mass prey items (M, kg) and number of unique prey items recorded (N).

				Predator category
Prey category	All				Small (<150 cm)				Medium (150–220 cm)				Large (>220 cm)
	%F	%M	%N	% IRI	%F	%M	%N	% IRI	%F	%M	%N	% IRI	%F	%M	%N	% IRI
Elasmobranchs	54.74	54.35	14.72	3780.64	44.26	52.79	18.27	3144.97	60.70	55.77	16.07	4361.39	47.11	52.25	9.74	2920.35
Teleosts	51.31	7.44	19.89	1402.25	72.95	18.18	35.60	3923.22	47.15	7.97	14.12	1041.63	42.15	4.73	24.92	1249.52
Reptiles	6.21	1.65	1.60	20.20	1.64	0.21	0.62	1.36	5.69	1.68	1.54	18.32	11.57	1.84	2.08	45.33
Birds	26.96	6.38	6.48	346.64	15.57	3.51	3.72	112.59	27.91	4.40	6.85	313.92	35.54	10.16	7.03	610.97
Mammals	40.69	27.83	9.92	1536.23	29.51	20.99	10.22	920.98	43.36	28.02	10.76	1681.66	44.63	28.70	8.15	1644.40
Cephalopods	15.52	0.86	29.94	478.14	14.75	1.59	12.38	206.22	17.62	1.10	35.43	643.53	10.74	0.33	26.36	286.78
Crustaceans	12.75	0.64	7.86	108.39	9.02	0.50	4.33	43.55	14.36	0.56	7.27	112.44	11.57	0.80	11.02	136.76
Micellaneous items	37.91	0.84	9.59	395.32	54.10	2.23	14.86	924.51	33.88	0.49	7.97	286.41	33.88	1.19	10.70	402.95
Totals	612	1341.59	192		122	80.67	83		369	787.06	148		121	473.85	91