The dynamics of pyrethroid resistance in Anopheles arabiensis from Zanzibar and an assessment of the underlying genetic basis

Table 1 Species identification of a subset of An. gambiae s.l. collected between 2011 and 2013 on Zanzibar

Year	Island	Site	No. tested	*An. arabiensis*	*% An. arabiensis*	*An. merus*	*% An. merus*	*An. gambiae*	*% An. gambiae*	An. quad*	% An. quad*
2011	Unguja	Kilimani	78	13	16.7	12	15.4	53	67.9	0	0.0
	Pemba	Chwale	24	23	95.8	0	0.0	0	0.0	0	0.0
		Kiungoni	24	24	100.0	0	0.0	0	0.0	0	0.0
		Uwandani	24	24	100.0	0	0.0	0	0.0	0	0.0
2012	Unguja	Chuini	72	72	100.0	0	0.0	0	0.0	0	0.0
		Mwera	110	110	100.0	0	0.0	0	0.0	0	0.0
	Pemba	Tumbe	340	206	60.6	134	39.4	0	0.0	0	0.0
		Mangwena	286	284	99.3	4	1.4	0	0.0	0	0.0
2013	Unguja	Chuini	102	102	100.0	0	0.0	0	0.0	0	0.0
		Mwera	71	71	100.0	0	0.0	0	0.0	0	0.0
		Kilimani	66	66	100.0	0	0.0	0	0.0	0	0.0
		Cheju	28	16	57.1	0	0.0	6	21.4	6	21.4
	Pemba	Pujini	75	75	100.0	0	0.0	0	0.0	0	0.0
		Kiungoni	92	92	100.0	0	0.0	0	0.0	0	0.0
		Uwandani	69	69	100.0	0	0.0	0	0.0	0	0.0
		Tumbe	71	70	98.6	0	0.0	1	1.4	0	0.0

ISSN: 1756-3305