Low and seasonal malaria transmission in the middle Senegal River basin: identification and characteristics of Anopheles vectors

Table 1 Main characteristics of Anopheles sampled during the longitudinal study

	Mosquitoes collected	Indoor/Total Endophagous rate%		Infected/total Infection rate%		Human blood meal/Total Anthropophagic rate%		L1014F kdr allele/total frequency%
October 2008	784	132/331	39.88%	7/784	0.89%	164/181	90.61%	64/898	7.13%
January 2009	27	8/12	66.67%	0/27	0.00%	5/7	71.43%	0/38	0.00%
May 2009	161	30/40	75.00%	0/161	0.00%	31/43	72.09%	2/150	1.33%
October 2009	568	143/302	47.35%	6/568	1.06%	75/88	85.23%	77/608	12.66%
January 2010	73	14/26	53.85%	1/73	1.37%	16/21	76.19%	9/104	8.65%
		Chi2 = 21.5 p < .0001		Fisher exact p = 0.7		Fisher exact p < 0.01		Fisher exact p < 0.001
An. funestus	21	1/1	100.00%	0/21	0.00%	5/10	50.00%	-	-
An. arabiensis	1055	139/313	44.41%	10/1055	0.95%	247/285	86.67%	103/1486	6.93%
An. gambiae M	30	4/6	67.67%	1/30	3.33%	9/12	75.00%	3/60	5.00%
An. gambiae S	128	15/41	36.59%	3/128	2.34%	30/32	93.75%	46/252	18.25%
An. pharoensis	278	141/251	56.18%	0/278	0.00%	0/1	0.00%	-	-
An. wellcomei	1	0/1	0.00%	0/1	0.00%	-	-	-	-
An. ziemanni	100	27/98	27.55%	0/100	0.00%	-	-	-	-
		Fisher exact p < 0.001		Fisher exact p = 0.09		Fisher exact p = 0.02		Chi2 = 36.6 p < 0.001
Total	1613	327/711	45.99%	14/1613	0.87%	291/340	85.59%	152/1798	8.45%

Number, endophagous rate, infection rate, anthropophagic rate and L1014F kdr allele frequency according to season and species during the longitudinal study from October 2008 to January 2010. Global comparison by Pearson Chi² of Fisher exact test, p values are given.

ISSN: 1756-3305