Impact of environmental factors on Biomphalaria pfeifferi vector capacity leading to human infection by Schistosoma mansoni in two regions of western Côte d'Ivoire

Sokouri, Edwige A.; Ahouty Ahouty, Bernardin; N’Djetchi, Martial; Abé, Innocent A.; Yao, Ble Gbacla Flora Dominique; Konan, Thomas Konan; MacLeod, Annette; Noyes, Harry; Nyangiri, Oscar; Matovu, Enock; Koffi, Mathurin

doi:10.1186/s13071-024-06163-2

Table 3 Estimated effects of abiotic characteristics on biotic factors

From: Impact of environmental factors on Biomphalaria pfeifferi vector capacity leading to human infection by Schistosoma mansoni in two regions of western Côte d'Ivoire

Factors	Total Biomphalaria pfeifferi
	Abundance				Presence
	Estimate	Std. error	z value	P	Estimate	Std. error	z value	P
T °C	0.023	0.368	−0.064	0.949	0.307	0.063	4.871	< 0.001*
pH	−0.243	0.331	−0.735	0.462	−0.360	0.039	−9.104	< 0.001*
TDS	−0.038	0.109	−0.350	0.726	−0.175	0.015	−11.322	< 0.001*
EC	−0.017	0.055	−0.313	0.754	−0.086	0.007	−11.337	< 0.001*
LST_Min	0.360	0.426	0.845	0.398	0.659	0.056	11.80	< 0.001*
LST_Max	−0.332	0.358	−0.925	0.355	−0.830	0.069	−11.99	< 0.001*
LST	−4.050	2.177	−1.861	0.062	−6.092	0.478	−12.74	< 0.001*
RAH	0.055	0.063	0.866	0.386	0.116	0.010	11.48	< 0.001*
Pp	0.008	0.093	0.092	0.926	0.086	0.011	7.822	< 0.001*
Infected B. pfeifferi
T °C	0.408	1.237	0.33	0.74	−0.059	0.168	−0.349	0.727
pH	−1.33	104	−1.28	0.20	0.811	0.208	3.891	< 0.001*
TDS	0.054	0.256	0.21	0.83	0.142	0.047	3.077	0.002*
CE	0.032	0.134	0.24	0.81	0.065	0.023	0.827	0.005*
LST_Min	0.604	0.554	1.09	0.28	0.628	0.165	3.794	< 0.001*
LST_Max	−0.527	0.508	−1.04	0.301	−0.287	0.129	−2.214	0.029*
LST	−3.13	3.49	−0.90	0.37	3.304	0.705	4.686	< 0.001*
RAH	0.087	0.094	0.93	0.35	0.034	0.022	1.507	0.132
Pp	0.072	0.115	0.63	0.53	0.172	0.029	5.960	< 0.001*
Thermophilic coliforms
T °C	−0.051	0.075	−0.69	0.490	−0.014	0.034	−0.423	0.672
pH	1.287	0.213	6.04	< 0.001*	−0.319	0.229	−1.395	0.163
TDS	−0.035	0.034	−1.03	0.3	0.015	0.014	1.074	0.283
EC	−0.020	0.017	−1.16	0.25	0.007	0.007	1.037	0.3
LST_Min	0.130	0.168	0.78	0.44	−0.023	0.083	−0.280	0.779
LST_Max	−0.073	0.167	−0.44	0.66	0.014	0.079	0.182	0.855
LST	0.959	1.128	0.85	0.40	0.925	0.511	1.811	0.070
RAH	0.012	0.028	0.42	0.67	−0.005	0.013	−0.414	0.679
Pp	0.014	0.030	0.5	0.62	0.001	0.013	0.087	0.931
E. coli
T °C	−0.032	0.073	−0.44	0.66	0.014	0.034	0.423	0.672
pH	1.364	0.307	4.44	< 0.001*	0.319	0.229	1.395	0.163
TDS	−0.056	0.035	−1.56	0.117	−0.016	0.014	−1.074	0.283
EC	−0.030	0.018	−1.69	0.091	−0.007	0.007	−1.037	0.3
LST_Min	0.147	0.172	0.86	0.39	0.023	0.083	0.280	0.779
LST_Max	−0.084	0.170	−0.50	0.62	−0.014	0.079	−0.182	0.855
LST	0.030	1.143	0.03	0.98	−0.925	0.511	−1.811	0.070
RAH	0.016	0.028	0.57	0.57	0.006	0.013	0.41	0.679
Pp	0.0150	0.032	0.46	0.64	−0.001	0.014	−0.09	0.93

T °C: water temperature; pH: hydrogen potential; TDS: total dissolved solids; EC: electrical conductivity; LST_Min: minimum land surface temperature; LST_Max: maximum land surface temperature; LST: mean land surface temperature; RAH: relative air humidity; Pp: precipitation
*Indicates significant association at P < 0.05

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ISSN: 1756-3305

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