Table III.

Seasonal quantitative indices of individual intestinal helminth infection of Rattus norvegicus.

		Spring				Summer				Autumn				Winter
Helminth species		P %	I	MI	MA	P %	I	MI	MA	P %	I	MI	MA	P %	I	MI	MA
Heterakis	U	30.9	0.7811	8.2	2.5	41.5	1.4570	8.44	3.5	20.0	0.3733	9.3	1.7	36.4	1.1074	8.4	3.1
spumosa	R	24.3	0.4668	7.9	1.9	23.1	7.7692	7.7	7.8	27.3	0.6445	8.7	2.4	36.9	1.0412	7.6	2.8
Hymenolepis	U	41.8 #	0.9200	5.3	2.2	29.2	0.4587	5.37	1.6	40.0	0.8267	5.2	2.1	40.9	0.9298	5.6	2.3
diminuta	R	21.6	0.3623	7.7	1.7	23.1	0.4083	7.7	1.8	36.4	1.0579	8.0	2.9	23.8	0.4507	7.9	1.9
Rodentolepis	U	10.9 #	0.0615	5.2	0.6	23.1	0.2663	5.0	1.2	13.3	0.0978	5.5	0.7	22.7	0.2583	5.0	1.1
fraterna	R	2.7	0.0051	7.0	0.2	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	10.7	0.0893	7.8	0.8
Nippostrongylus	U	9.1	0.0975	11.8	1.1	16.9	0.3411	11.9	2.0	33.3 *	3.7333	11.2	3.7	9.1	0.1116	13.5	1.2
brasiliensis	R	8.1	0.1030	15.7	1.3	23.1	0.8343	15.7	3.6	45.5 *	3.1818	15.4	7.0	17.9	0.4953	15.5	2.8
Capillaria sp.	U	9.1	0.0830	10.0	0.9	13.8	0.1981	10.3	1.4	0.0	0.0	0.0	0.0	4.5	0.0227	11.0	0.5
	R	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	18.2 * °	0.3140	9.5	1.7	1.2	0.0125	8.0	0.1
Trichuris	U	9.1	0.0397	4.8	0.4	7.7	0.0296	5.0	0.4	20.0 °	0.2000	5.0	1.0	0.0	0.0	0.0	0.0
muris	R	2.7	0.0029	4.0	0.1	7.7	0.0296	5.0	0.4	9.1	0.0413	5.0	0.4	2.4	0.0023	4.0	0.1
Syphacia	U	5.5	0.0248	8.3	0.4	4.6	0.0178	8.3	0.4	20.0 **	0.3200	8.0	1.6	9.1 #	0.0702	8.5	0.8
muris	R	0.0	0.0	0.0	0.0	7.7	0.0115	2.0	0.2	9.1	0.0331	4.0	0.4	0.0	0.0	0.0	0.0

U: urban; R: suburban-rural; significantly different (p < 0.05) from:

^*spring,

^**summer,

^°winter,

^#suburban-rural.