Table 2:

The samples of seafood were collected in Shandong Province from 2010 to 2013

Years	Seasons	Supermarkets			Farmer’s markets
		Shrimp	Sashimi	Shellfish	Shrimp	Sashimi	Shellfish
2010	Summer	2	8	0	0	4	1
	Autumn	16	28	42	9	1	13
	Total	18	36	42	9	5	14
2011	Summer	18	33	25	8	6	7
	Autumn	21	45	18	5	5	3
	Total	39	78	43	13	11	10
2012	Summer	22	36	30	7	23	41
	Autumn	18	46	30	18	20	32
	Total	40	82	60	25	43	73
2013	Summer	13	40	27	5	6	8
	Autumn	8	26	6	29	18	22
	Total	21	66	33	34	24	30