Population dynamics of mosquito species in a West Nile virus endemic area in Madagascar

Open Access

Table 3.

Analysis of variance to examine the effect of trap types (B), months (C), localities (D), and biotope nature (E) on the heterogeneity of mosquito species (A) in Lake Kinkony.

	df	Sum Sq	Mean Sq	F value	Pr (>F)
a-Combined localities
A	20	0.0342	0.001709	2.612	0.00012^***
B	1	0.0000	0.000024	0.037	0.84746
C	5	0.0014	0.000277	0.423	0.83288
D	2	0.0058	0.002910	4.448	0.01180^*
E	2	0.0019	0.000948	1.449	0.23495
A × B	13	0.0011	0.000088	0.135	0.99989
A × C	45	0.0445	0.000988	1.510	0.01622^*
A × D	29	0.0514	0.001772	2.709	2.50e−06^***
A × E	29	0.1670	0.005759	8.804	<2.00e−16^***
R	2293	1.5000	0.000654
b-Morafeno
A	16	0.0894	0.005588	5.607	7.09e−12^***
C	5	0.0025	0.000490	0.492	0.78262
E	2	0.0033	0.001672	1.677	0.18723
A × C	22	0.0430	0.001956	1.962	0.00493^**
A × E	17	0.3031	0.017832	17.892	<2e−16^***
R	1505	1.5000	0.000997
c-Ankelimitondrotra
A	15	2.000e−29	1.600e−30	0.012	1.00000
C	4	4.920e−27	1.230e−27	8.796	6.34e−07^***
E	2	3.000e−28	1.515e−28	1.084	0.33893
A × C	10	3.350e−27	3.349e−28	2.395	0.00852^**
A × E	18	2.130e−27	1.185e−28	0.848	0.64330
R	670	9.367e−26	1.398e−28
d-Analalava
A	18	8.530e−30	4.739e−31	0.402	0.985
C	5	0.000e+00	1.000e−34	0.000	1.000
E	2	0.000e+00	0.000e+00	0.000	1.000
A × C	18	0.000e+00	0.000e+00	0.000	1.000
A × E	15	1.000e−32	6.000e−34	0.000	1.000
R	118	1.392e−28	1.179e−30

× shows the effect of interaction between cited factors.

p = 0.05;

^**

p = 0.01;

^***

p = 0.001.

df = Degrees of freedom; Sum Sq = sum of squares; Mean Sq = mean of squares; F value = value of the F test; Pr (>F) = probability of the F test.

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