Electric nets and sticky materials for analysing oviposition behaviour of gravid malaria vectors

Dugassa, Sisay; Lindh, Jenny M; Torr, Steve J; Oyieke, Florence; Lindsay, Steven W; Fillinger, Ulrike

doi:10.1186/1475-2875-11-374

Malaria Journal

Table 3 The use of sticky materials and detergents to assess if and where An. gambiae s.s. land on aquatic habitats when laying eggs

From: Electric nets and sticky materials for analysing oviposition behaviour of gravid malaria vectors

Treatment	Mean no. of mosquitoes/eggs (95% CI)	OR (95% CI)	p
Experiment: Assessment of landing and egg-laying on the habitat surface
Mosquitoes
wire screen	11.9 (8.1 –17.6)	1^a
spray glue	35.2 (27.4 – 45.1)	3.0 (2.1 – 4.1) ^b	<0.001
detergent	41.7 (32.6 – 53.2)	3.5 (2.0 – 6.1) ^b	<0.001
transparency	14.6 (10.8 – 19.7)	1.2 (0.7 – 2.0) ^a	0.460
site 1	20.4 (14.3 – 29.2)	1^a
site 2	16.4 (12.5 – 21.6)	0.8 (0.6 – 1.0) ^a	0.070
site 3	37.5 (26.1 – 54.0)	1.8 (1.3 – 2.5)^b	<0.001
site 4	29.0 (21.0 – 40.0)	1.4 (1.2 – 1.7) ^b	<0.001
Eggs
wire screen	39 (23–65)	1^a
spray glue	464 (344 – 628)	11.9 (6.8 – 20.9) ^b	<0.001
detergent	12 (4 – 34)	0.3 (0.1 – 0.8) ^c	0.018
transparency	23 (10 – 52)	0.6 (0.3 – 1.1) ^ac	0.109
site 1	105 (42 – 259)	1^a
site 2	79 (29 – 219)	0.8 (0.4 – 1.6) ^a	0.546
site 3	173 (68 – 439)	1.8 (1.1 – 3.1) ^b	0.026
site 4	181 (79 – 419)	1.8 (1.3 – 2.5) ^b	0.001
Experiment: Assessment of landing on the habitat edge for egg-laying
Mosquitoes
spray glue	13 (9.4 – 18.0)	1^a
yellow sticky film	5.4 (3.0 – 10.0)	0.4 (0.2 – 0.8) ^b	0.012
transparent double-sided sticky film	5.3 (4.0 – 7.3)	0.4 (0.2 – 0.6) ^b	<0.001
site 1	4.9 (3.1 – 7.7)	1^a
site 2	10.8 (6.7 – 17.5)	2.5 (1.5 – 4.1) ^b	<0.001
site 3	9.0 (6.0 – 13.6)	1.9 (1.0 – 3.5)^b	0.036
site 4	7.1 (4.1 – 12.2)	1.7 (0.8 – 2.9) ^a	0.062
Eggs
spray glue	358 (232 – 552)	1^a
yellow sticky film	363 (240 – 549)	1.0 (0.6 – 1.7) ^a	0.930
transparent double-sided sticky film	297 (178 – 497)	0.8 (0.5 – 1.4) ^a	0.420
Experiment: Evaluation of sequence of landing on habitat during oviposition
surface catch (detergent)	42.5 (37.7 – 47.9)	1
edge catch (spray glue)	7.4 (5.1 – 10.8)	0.17 (0.12 – 0.25)	<0.001

Results from generalized linear models for individual experiments.
CI=confidence interval.
OR=odds ratio.
Multiple comparison of treatments: treatments denoted with same letter are not significantly different.

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ISSN: 1475-2875

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