Spatial and temporal distribution of the malaria mosquito Anopheles arabiensis in northern Sudan: influence of environmental factors and implications for vector control

Table 2 Types of aquatic habit sampled and number/proportion positive for larvae

Habitat type*	Dongola			Merowe			Combined
Habitat type*	No. sampled	No. positive	% positive	No. sampled	No. positive	% positive	No. sampled	No. positive	% positive
Container	138	0	0.0	536	5	0.9	674	5	0.7
Canal (flowing)	167	2	1.2	273	2	0.7	440	4	0.9
Canal (stagnant)	130	3	2.3	213	11	5.2	343	14	4.1
Flooded field	67	2	3.0	164	4	2.4	231	6	2.6
Domestic drain	69	2	2.9	146	8	5.5	215	10	4.7
Tap	137	2	1.5	65	5	7.7	202	7	3.5
Riverbank	119	35	29.4	82	42	51.2	201	77	38.3
Water tank	1	0	0.0	144	8	5.6	145	8	5.5
Underground pipe	64	23	35.9	77	16	20.8	141	39	27.7
Cistern	58	0	0.0	53	1	1.9	111	1	0.9
Brickworks	54	15	27.8	53	14	26.4	107	29	27.1
Canal seepage	79	19	24.1	27	6	22.2	106	25	23.6
Animal water pool	31	2	6.5	58	12	20.7	89	14	15.7
Surface pipe	24	5	20.8	58	7	12.1	82	12	14.6
Khor	7	3	42.9	67	15	22.4	74	18	24.3
Culvert	47	2	4.3	8	3	37.5	55	5	9.1
Grassy knoll	50	30	60.0	5	2	40.0	55	32	58.2
Underground pump	35	5	14.3	16	3	18.8	51	8	15.7
Flood pool	1	1	100.0	11	1	9.1	12	2	16.7
Well	3	3	100.0	8	0	0.0	11	3	27.3
All habitats	1,281	154	12.0	2,064	165	8.0	3,345	319	9.5

ISSN: 1475-2875