Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry traces the geographical source of Biomphalaria pfeifferi and Bulinus forskalii, involved in schistosomiasis transmission

Table 2 Top ten discriminating MALDI–TOF MS peaks, selected with the ClinProTools software, for each group of snails

Index	Mass	DAve	Group A						Group B
Index	Mass	DAve	PTTA	PWKW	PAD	Index	Mass	DAve	PTTA	PWKW	PAD
29	4802.21	76.48	< 10^–5	< 10^–5	< 10^–5	36	5763.36^a	31.43	< 10^–6	< 10^–6	< 10^–6
30	4818	33.9	< 10^–4	< 10^–5	< 10^–3	50	6439.1	30.89	< 10–6	< 10^–6	< 10^–5
35	5161.25 #	11.23	< 10^–4	< 10^–5	0.005	27	5442.12^a	30.42	< 10^–6	< 10^–6	< 10^–5
44	5881.69	9.82	< 10^–5	< 10^–5	0.003	6	3399.35	13.31	< 10^–6	< 10^–5	< 10^–4
31	4832.72	9.81	0.002	0.007	0.006	21	4800.99	9.24	0.024	< 10^–6	< 10^–6
28	4776.29	9.67	< 10^–3	< 10^–5	< 10^–3	7	3416.56	8.55	< 10^–6	< 10^–6	< 10^–4
65	6650.44	7.99	< 10^–6	< 10^–5	0.012	1	3083.03	6.57	< 10^–4	< 10^–6	< 10^–6
38	5530.87 #	7.19	0.002	< 10^–3	< 10^–3	77	8946.56	5.14	< 10^–6	< 10^–6	< 10^–6
97	10,085.68 #	6.26	< 10^–5	< 10^–5	< 10^–3	30	5501.42^a	4.87	< 10^–6	< 10^–6	< 10^–6
57	6276.78	6.19	< 10^–6	< 10^–5	< 10^–3	76	8933.43	4.73	< 10^–6	< 10^–6	< 10^–6

Mass m/z value, DAve Difference between the maxima land the minimal average peak intensity of all snail colonies, PTTA t-/analysis of variance test P-value, PWKW Wilcoxon/Kruskal–Wallis test P-value, PAD Anderson–Darling test P-value
^aCharacteristic peaks found only in colonies from the Senegal River Delta (NW), Biomphalaria pfeifferi NW and Bulinus forskalii NW

ISSN: 2049-9957