Environmental Factors Associated with Mosquito Vector Larvae in a Malaria-Endemic Area in Ratchaburi Province, Thailand

Table 4

Relationship between Anopheles larval abundance and environmental factors in the Lam Pachi River, Thailand.

Anopheles larvae	Means±SD of each environmental factor in river
	Turbidity (FTU)	Water depth (cm)	Width of river (cm)	WT (°C)	pH	DO (mg/L)
An. subpictus s.l.
r	-0.334	0.284	-0.444	-.012	-0.741	0.741
p	0.072	0.129	0.014	.950	< 0.001	< 0.001
An. barbirostris s.l..
r	-0.282	0.264	-0.407	.020	-0.640	0.652
p	0.131	0.159	0.026	.917	< 0.001	< 0.001
All species
r	-0.325	0.283	-0.441	-.004	-0.725	0.736
p	0.080	0.130	0.015	.985	< 0.001	< 0.001

FTU, formazin turbidity unit; WT, water temperature; DO, dissolved oxygen. < 0.05; < 0.01 (two-tailed Pearson correlation).