Table 1.

Geographic position of the sites in the southern Gulf of Mexico, where sediment, water, shoal flounders Syacium gunteri and cestodes Oncomegas wageneri were collected

Site	Latitude	Longitude	Number of fish collected	Mean standard length of S. gunteri ± SD	Infection parameters of O. wageneri
	DD	DD		cm	%	MA ± SD
1	-91.87749	19.063737	6	11.52 ± 0.32	100	97 ± 51
2	-92.924406	18.558687	10	10.41 ± 1.18	100	81 ± 35
3	-92.657425	18.691936	7	10.70 ± 1.42	43	19 ± 28
4	-92.460664	18.711013	4	8.05 ± 1.41	75	10 ± 9
5	-92.50014	19.187617	10	9.01 ± 0.89	80	29 ± 22
6	-91.500028	19.374545	1	23.30	100	13
7	-93.000353	18.753978	11	12.48 ± 1.23	89	73 ± 60
8	-95.501	19.001317	10	10.95 ± 1.17	80	8 ± 6
9	-92.500832	18.999193	9	12.47 ± 2.06	100	20 ± 22
10	-92.006873	18.999577	3	16.87 ± 4.59	67	62 ± 9
11	-91.501037	19.500352	4	23.38 ± 5.54	75	11 ± 13
12	-92.00304	18.937508	6	12.28 ± 0.47	100	94 ± 68
13	-92.375937	18.999565	6	11.18 ± 0.46	100	39 ± 14
14	-95.999833	19.501753	10	12.59 ± 1.31	60	61 ± 108
15	-94.25	18.233333	10	10.97 ± 1.15	80	13 ± 9
16	-92.15496	18.88098	9	11.00 ± 0.71	100	34 ± 15
17	-92.986852	18.483098	4	11.25 ± 0.26	100	110 ± 44
18	-93.00009	18.50345	11	11.35 ± 1.23	82	60 ± 40
19	-93.20285	18.62565	10	17.78 ± 5.62	80	22 ± 23
20	-92.81203	18.691928	11	9.81 ± 0.97	100	33 ± 27
21	-92.563643	19.126108	11	11.32 ± 1.88	90	37 ± 23
22	-92.50009	19.251617	6	13.37 ± 4.15	17	27
23	-92.18765	18.938898	4	10.74 ± 0.82	100	40 ± 46
24	-92.252252	18.772892	3	8.83 ± 2.48	100	25 ± 27
25	-92.12616	19.063458	5	14.16 ± 7.30	80	51 ± 53
26	-94.000493	18.375	6	15.13 ± 0.93	100	26 ± 30
27	-92.390441	18.68429	2	10.45 ± 5.65	100	43 ± 39
28	-92.063815	18.812852	4	10.90 ± 5.53	100	11 ± 7
29	-94.499377	18.753407	1	11.30	100	214

DD = decimal degrees, % = prevalence, MA ± SD = mean abundance ± standard deviation. See Additional file 1: Table S1 for a complete list of physicochemical parameters and contaminants from water and sediments